Breast Cancer

CHICAGO – For the chief patient officer of the American Cancer Society, this year’s annual meeting of the American Society of Clinical Oncology was a gem. And it didn’t just sparkle because of the sequined Taylor Swift fans clogging the nearby streets during the meeting.

Arif Kamal, MD, MBA, MHS, who is also an oncologist at Duke University, Durham, N.C., said he was impressed by a pair of landmark studies released at the meeting that show hidden cancer can be targeted with “really remarkable outcomes.” He also highlighted sessions that examined the role of artificial intelligence (AI) in oncology, during an interview.

Below are lightly edited excerpts from a conversation with Dr. Kamal:



Question: What are some of most groundbreaking studies released at ASCO?

Answer: One is an interim analysis of the NATALEE trial, which involved patients with early-stage hormone receptor-positive, HER2-negative (HR+/HER2–) breast tumors. This phase 3 randomized trial compared maintenance therapy with the cyclin-dependent kinase 4/6 (CDK4/6) inhibitor ribociclib (Kisqali) plus endocrine therapy with an aromatase inhibitor to endocrine therapy alone in patients with node-positive or node-negative and stage II or III HR+/HER– breast cancer.

For a long time, the standard care in these patients has been to use endocrine therapy alone. This is the first big trial to show that upstream usage of additional therapy in early stages is also beneficial for disease-free survival. The 3-year invasive disease-free survival rate was 90.4% in the rebociclib-endocrine therapy group vs. 87.1% for patients who received only endocrine therapy (P = .0014).



Q: How do these findings add to current knowledge?

A: Typically, we let people get metastatic disease before we use CDK4/6 inhibitors. These findings show that systemic treatment beyond endocrine therapy will be helpful in cases where you’ve got smaller disease that has not spread yet.

Even in patients with node-negative breast cancer, micrometastatic disease is clearly there, because the medication killed the negative lymph nodes.



Q: What else struck you as especially important research?

A: The NATALEE findings match what we saw in another study – the ADAURA trial, which looked at adjuvant osimertinib in non–small-cell lung cancer patients with EGFR-mutated, stage IB to IIIA disease – cancer that has not spread to the lymph nodes.

This is another example where you have a treatment being used in earlier-stage disease that’s showing really remarkable outcomes. The study found that 5-year overall survival was 88% in an osimertinib group vs. 78% in a placebo group (P < .001). This is a disease where, in stage IB, we wouldn’t even necessarily give these patients treatment at all, other than surgical resection of the tumor and maybe give them a little bit of chemotherapy.

Even in these smaller, early tumors, osimertinib makes a difference.



Q: As a whole, what are these studies telling us about cancer cells that can’t be easily detected?

A: To find a disease-free survival benefit with adding ribociclib in a stage II, stage III setting, particularly in node-negative disease, is remarkable because it says that the cells in hiding are bad actors, and they are going to cause trouble. The study shows that medications can find these cells and reverse that risk of bad outcomes.

If you think about the paradigm of cancer, that’s pretty remarkable because the ADAURA trial does the same thing: You do surgery for [early-stage] lung cancers that have not spread to the lymph nodes and you figure, “Well, I’ve got it all, right? The margins are real big, healthy, clean.” And yet, people still have recurrences, and you ask the same question: “Can any medicine find those few cells, the hundreds of cells that are still left somewhere in hiding?” And the answer is again, yes. It’s changing the paradigm of our understanding of minimal residual disease.

That’s why there’s so much interest in liquid biopsies. Let’s say that after treatment we don’t see any cancer radiologically, but there’s a signal from a liquid biopsy [detecting residual cancer]. These two trials demonstrate that there’s something we can do about it.



Q: There were quite a few studies about artificial intelligence released at ASCO. Where do we stand on that front?

A: We’re just at the beginning of people thinking about the use of generative AI for clinical decision support, clinical trial matching, and pathology review. But AI, at least for now, still has the issue of making up things that aren’t true. That’s not something patients are going to be okay with.



Q: How can AI be helpful to medical providers considering its limitations?

A: AI is going to be very good at the data-to-information transition. You’ll start seeing people use AI to start clinical notes for them and to match patients to the best clinical trials for them. But fundamentally, the clinician’s role will continue to be to check facts and offer wisdom.



Q: Will AI threaten the careers of oncologists?

A: The body of knowledge about oncology is growing exponentially, and no one can actually keep up. There’s so much data that’s out there that needs to be turned into usable information amid a shortage of oncologists. At the same time, the prevalence of cancer is going up, even though mortality is going down.

Synthesis of data is what oncologists are waiting for from AI. They’ll welcome it as opposed to being worried. That’s the sentiment I heard from my colleagues.

Dr. Kamal has no disclosures.

CHICAGO – For the chief patient officer of the American Cancer Society, this year’s annual meeting of the American Society of Clinical Oncology was a gem. And it didn’t just sparkle because of the sequined Taylor Swift fans clogging the nearby streets during the meeting.

Arif Kamal, MD, MBA, MHS, who is also an oncologist at Duke University, Durham, N.C., said he was impressed by a pair of landmark studies released at the meeting that show hidden cancer can be targeted with “really remarkable outcomes.” He also highlighted sessions that examined the role of artificial intelligence (AI) in oncology, during an interview.

Below are lightly edited excerpts from a conversation with Dr. Kamal:



Question: What are some of most groundbreaking studies released at ASCO?

Answer: One is an interim analysis of the NATALEE trial, which involved patients with early-stage hormone receptor-positive, HER2-negative (HR+/HER2–) breast tumors. This phase 3 randomized trial compared maintenance therapy with the cyclin-dependent kinase 4/6 (CDK4/6) inhibitor ribociclib (Kisqali) plus endocrine therapy with an aromatase inhibitor to endocrine therapy alone in patients with node-positive or node-negative and stage II or III HR+/HER– breast cancer.

For a long time, the standard care in these patients has been to use endocrine therapy alone. This is the first big trial to show that upstream usage of additional therapy in early stages is also beneficial for disease-free survival. The 3-year invasive disease-free survival rate was 90.4% in the rebociclib-endocrine therapy group vs. 87.1% for patients who received only endocrine therapy (P = .0014).



Q: How do these findings add to current knowledge?

A: Typically, we let people get metastatic disease before we use CDK4/6 inhibitors. These findings show that systemic treatment beyond endocrine therapy will be helpful in cases where you’ve got smaller disease that has not spread yet.

Even in patients with node-negative breast cancer, micrometastatic disease is clearly there, because the medication killed the negative lymph nodes.



Q: What else struck you as especially important research?

A: The NATALEE findings match what we saw in another study – the ADAURA trial, which looked at adjuvant osimertinib in non–small-cell lung cancer patients with EGFR-mutated, stage IB to IIIA disease – cancer that has not spread to the lymph nodes.

This is another example where you have a treatment being used in earlier-stage disease that’s showing really remarkable outcomes. The study found that 5-year overall survival was 88% in an osimertinib group vs. 78% in a placebo group (P < .001). This is a disease where, in stage IB, we wouldn’t even necessarily give these patients treatment at all, other than surgical resection of the tumor and maybe give them a little bit of chemotherapy.

Even in these smaller, early tumors, osimertinib makes a difference.



Q: As a whole, what are these studies telling us about cancer cells that can’t be easily detected?

A: To find a disease-free survival benefit with adding ribociclib in a stage II, stage III setting, particularly in node-negative disease, is remarkable because it says that the cells in hiding are bad actors, and they are going to cause trouble. The study shows that medications can find these cells and reverse that risk of bad outcomes.

If you think about the paradigm of cancer, that’s pretty remarkable because the ADAURA trial does the same thing: You do surgery for [early-stage] lung cancers that have not spread to the lymph nodes and you figure, “Well, I’ve got it all, right? The margins are real big, healthy, clean.” And yet, people still have recurrences, and you ask the same question: “Can any medicine find those few cells, the hundreds of cells that are still left somewhere in hiding?” And the answer is again, yes. It’s changing the paradigm of our understanding of minimal residual disease.

That’s why there’s so much interest in liquid biopsies. Let’s say that after treatment we don’t see any cancer radiologically, but there’s a signal from a liquid biopsy [detecting residual cancer]. These two trials demonstrate that there’s something we can do about it.



Q: There were quite a few studies about artificial intelligence released at ASCO. Where do we stand on that front?

A: We’re just at the beginning of people thinking about the use of generative AI for clinical decision support, clinical trial matching, and pathology review. But AI, at least for now, still has the issue of making up things that aren’t true. That’s not something patients are going to be okay with.



Q: How can AI be helpful to medical providers considering its limitations?

A: AI is going to be very good at the data-to-information transition. You’ll start seeing people use AI to start clinical notes for them and to match patients to the best clinical trials for them. But fundamentally, the clinician’s role will continue to be to check facts and offer wisdom.



Q: Will AI threaten the careers of oncologists?

A: The body of knowledge about oncology is growing exponentially, and no one can actually keep up. There’s so much data that’s out there that needs to be turned into usable information amid a shortage of oncologists. At the same time, the prevalence of cancer is going up, even though mortality is going down.

Synthesis of data is what oncologists are waiting for from AI. They’ll welcome it as opposed to being worried. That’s the sentiment I heard from my colleagues.

Dr. Kamal has no disclosures.

CHICAGO – For the chief patient officer of the American Cancer Society, this year’s annual meeting of the American Society of Clinical Oncology was a gem. And it didn’t just sparkle because of the sequined Taylor Swift fans clogging the nearby streets during the meeting.

Arif Kamal, MD, MBA, MHS, who is also an oncologist at Duke University, Durham, N.C., said he was impressed by a pair of landmark studies released at the meeting that show hidden cancer can be targeted with “really remarkable outcomes.” He also highlighted sessions that examined the role of artificial intelligence (AI) in oncology, during an interview.

Below are lightly edited excerpts from a conversation with Dr. Kamal:



Question: What are some of most groundbreaking studies released at ASCO?

Answer: One is an interim analysis of the NATALEE trial, which involved patients with early-stage hormone receptor-positive, HER2-negative (HR+/HER2–) breast tumors. This phase 3 randomized trial compared maintenance therapy with the cyclin-dependent kinase 4/6 (CDK4/6) inhibitor ribociclib (Kisqali) plus endocrine therapy with an aromatase inhibitor to endocrine therapy alone in patients with node-positive or node-negative and stage II or III HR+/HER– breast cancer.

For a long time, the standard care in these patients has been to use endocrine therapy alone. This is the first big trial to show that upstream usage of additional therapy in early stages is also beneficial for disease-free survival. The 3-year invasive disease-free survival rate was 90.4% in the rebociclib-endocrine therapy group vs. 87.1% for patients who received only endocrine therapy (P = .0014).



Q: How do these findings add to current knowledge?

A: Typically, we let people get metastatic disease before we use CDK4/6 inhibitors. These findings show that systemic treatment beyond endocrine therapy will be helpful in cases where you’ve got smaller disease that has not spread yet.

Even in patients with node-negative breast cancer, micrometastatic disease is clearly there, because the medication killed the negative lymph nodes.



Q: What else struck you as especially important research?

A: The NATALEE findings match what we saw in another study – the ADAURA trial, which looked at adjuvant osimertinib in non–small-cell lung cancer patients with EGFR-mutated, stage IB to IIIA disease – cancer that has not spread to the lymph nodes.

This is another example where you have a treatment being used in earlier-stage disease that’s showing really remarkable outcomes. The study found that 5-year overall survival was 88% in an osimertinib group vs. 78% in a placebo group (P < .001). This is a disease where, in stage IB, we wouldn’t even necessarily give these patients treatment at all, other than surgical resection of the tumor and maybe give them a little bit of chemotherapy.

Even in these smaller, early tumors, osimertinib makes a difference.



Q: As a whole, what are these studies telling us about cancer cells that can’t be easily detected?

A: To find a disease-free survival benefit with adding ribociclib in a stage II, stage III setting, particularly in node-negative disease, is remarkable because it says that the cells in hiding are bad actors, and they are going to cause trouble. The study shows that medications can find these cells and reverse that risk of bad outcomes.

If you think about the paradigm of cancer, that’s pretty remarkable because the ADAURA trial does the same thing: You do surgery for [early-stage] lung cancers that have not spread to the lymph nodes and you figure, “Well, I’ve got it all, right? The margins are real big, healthy, clean.” And yet, people still have recurrences, and you ask the same question: “Can any medicine find those few cells, the hundreds of cells that are still left somewhere in hiding?” And the answer is again, yes. It’s changing the paradigm of our understanding of minimal residual disease.

That’s why there’s so much interest in liquid biopsies. Let’s say that after treatment we don’t see any cancer radiologically, but there’s a signal from a liquid biopsy [detecting residual cancer]. These two trials demonstrate that there’s something we can do about it.



Q: There were quite a few studies about artificial intelligence released at ASCO. Where do we stand on that front?

A: We’re just at the beginning of people thinking about the use of generative AI for clinical decision support, clinical trial matching, and pathology review. But AI, at least for now, still has the issue of making up things that aren’t true. That’s not something patients are going to be okay with.



Q: How can AI be helpful to medical providers considering its limitations?

A: AI is going to be very good at the data-to-information transition. You’ll start seeing people use AI to start clinical notes for them and to match patients to the best clinical trials for them. But fundamentally, the clinician’s role will continue to be to check facts and offer wisdom.



Q: Will AI threaten the careers of oncologists?

A: The body of knowledge about oncology is growing exponentially, and no one can actually keep up. There’s so much data that’s out there that needs to be turned into usable information amid a shortage of oncologists. At the same time, the prevalence of cancer is going up, even though mortality is going down.

Synthesis of data is what oncologists are waiting for from AI. They’ll welcome it as opposed to being worried. That’s the sentiment I heard from my colleagues.

Dr. Kamal has no disclosures.

The common side effect of hand-foot syndrome seen in patients taking capecitabine can be prevented with a cheap and safe topical gel containing 1% diclofenac, researchers reported in a study that has been hailed by experts as “practice changing.”

Hand-foot syndrome causes painful, bleeding blisters and ulcers on the palms and soles. It often leads to dose reductions and sometimes even discontinuations, both of which limit the effectiveness of capecitabine, a standard oral chemotherapy drug widely used for colorectal and breast  cancers.

In a new study presented at the annual meeting of the American Society of Clinical Oncology, Indian researchers reported that a cheap, safe, and widely available over-the-counter nonsteroidal anti-inflammatory gel containing 1% diclofenac reduced the incidence of hand-foot syndrome by 75% among patients with cancer being treated with capecitabine.

Up until now, the oral anti-inflammatory celecoxib (Celebrex) was the only agent proven to prevent the problem, but it’s rarely used because of the risk for strokes, gastric bleeding, and other issues, none of which are a concern with topical diclofenac, which osteoarthritis patients have used safely for years.

The Indian trial, dubbed D-Torch, establishes “1% topical diclofenac gel as the new standard of care to prevent capecitabine-associated hand-foot syndrome,” said investigator and study presenter Atul Batra, MD, a medical oncologist at the All India Institute of Medical Sciences, New Delhi.

Dr. Batra told ASCO Daily News that there is no need for a second trial. “We don’t feel there’s a need to replicate these results” in a larger study “because this was adequately powered, and the results speak for themselves. There’s no confusion about these results. Diclofenac is clearly effective.”

Dr. Batra also commented that his clinic now uses topical diclofenac routinely during capecitabine treatment and that he hopes oncology practices elsewhere will do the same.   

Diclofenac gel is sold under the brand name Voltaren and is also available as a generic; in the United States, a 150-gram tube costs about $18 at Walmart.
 

‘The most practice-changing study’ at ASCO 2023

Audience members at ASCO’s annual meeting immediately saw the importance of the study.

Tarah Ballinger, MD, a breast cancer specialist at Indiana University, Indianapolis, said on Twitter that “this might be the most practice changing study I heard at ASCO23.” Topical diclofenac is “widely available, affordable, [and] addresses [a] major” quality of life issue.

The study discussant at the meeting, gastrointestinal cancer specialist Pallavi Kumar, MD, of the University of Pennsylvania, Philadelphia, concurred: “For me as a GI oncologist, topical diclofenac for prevention of HFS for patients on capecitabine is practice changing,” she said.

The takeaway is “that topical diclofenac significantly reduces the incidence of grade 2 or higher HFS in patients receiving capecitabine.” The results are “very impressive,” Dr. Kumar said.

Study details

The idea for the new study came after Batra and colleagues realized that celecoxib, a COX-2 enzyme inhibitor, helps prevent capecitabine hand-foot syndrome (HFS) by blocking a key process that leads to it, the up-regulation of COX-2 and subsequent release of proinflammatory prostaglandins.

They turned to diclofenac gel hoping to get the same effect but more safely; diclofenac is also a COX-2 blocker, and its topical formulation has a strong safety record. 

To test the approach, the team randomly assigned 130 patients to topical diclofenac and 133 to placebo – the gel vehicle without the medication – while they were being treated with capecitabine for 12 weeks; 56% were being treated for breast cancer and the rest for gastrointestinal cancers.

Subjects rubbed one fingertip’s worth of gel – about half a gram – on each palm and the back of each hand twice a day. The dose was about 4 grams/day, which is well below maximal dosages for osteoarthritis (up to 32 g/day over all affected joints). Adherence to treatment was about 95% in both arms.

By the end of 12 weeks, the incidence of grade 2 or higher HFS was 3.8% in the diclofenac arm (5 patients) versus 15% (n = 20) with placebo (P = .003), a 75% risk reduction.

The incidence of any grade HFS was 6.1% in the treatment group versus 18.1% with placebo (P = .003).

Hand-foot syndrome led to dose reductions of capecitabine in 13.5% of placebo but only 3.8% of those in the diclofenac group (P = .002). 

The findings held regardless of whether patients were being treated for breast or GI cancer or if they were men or women. 

Other capecitabine-induced adverse events, including diarrhea, mucositis, and myelosuppression, were not significantly different between the groups.

The treatment arms were well balanced, with a median age of 47 years in both groups and women making up about 70% of each. About 40% of subjects in each group were on capecitabine monotherapy with the rest on combination treatments. The mean dose of capecitabine was just over 1,880 mg/m² in both groups.

At the meeting, Dr. Batra was asked if topical diclofenac would also work for another common problem in oncology: hand-food syndrome occurring as a side-effect with VEGF–tyrosine kinase inhibitors. He didn’t think so because it probably has a different cause than capecitabine HFS, one not strongly related to COX-2 up-regulation.

The study was partly funded by the Indian Supportive Care of Cancer Association. The investigators reported no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

The common side effect of hand-foot syndrome seen in patients taking capecitabine can be prevented with a cheap and safe topical gel containing 1% diclofenac, researchers reported in a study that has been hailed by experts as “practice changing.”

Hand-foot syndrome causes painful, bleeding blisters and ulcers on the palms and soles. It often leads to dose reductions and sometimes even discontinuations, both of which limit the effectiveness of capecitabine, a standard oral chemotherapy drug widely used for colorectal and breast  cancers.

In a new study presented at the annual meeting of the American Society of Clinical Oncology, Indian researchers reported that a cheap, safe, and widely available over-the-counter nonsteroidal anti-inflammatory gel containing 1% diclofenac reduced the incidence of hand-foot syndrome by 75% among patients with cancer being treated with capecitabine.

Up until now, the oral anti-inflammatory celecoxib (Celebrex) was the only agent proven to prevent the problem, but it’s rarely used because of the risk for strokes, gastric bleeding, and other issues, none of which are a concern with topical diclofenac, which osteoarthritis patients have used safely for years.

The Indian trial, dubbed D-Torch, establishes “1% topical diclofenac gel as the new standard of care to prevent capecitabine-associated hand-foot syndrome,” said investigator and study presenter Atul Batra, MD, a medical oncologist at the All India Institute of Medical Sciences, New Delhi.

Dr. Batra told ASCO Daily News that there is no need for a second trial. “We don’t feel there’s a need to replicate these results” in a larger study “because this was adequately powered, and the results speak for themselves. There’s no confusion about these results. Diclofenac is clearly effective.”

Dr. Batra also commented that his clinic now uses topical diclofenac routinely during capecitabine treatment and that he hopes oncology practices elsewhere will do the same.   

Diclofenac gel is sold under the brand name Voltaren and is also available as a generic; in the United States, a 150-gram tube costs about $18 at Walmart.
 

‘The most practice-changing study’ at ASCO 2023

Audience members at ASCO’s annual meeting immediately saw the importance of the study.

Tarah Ballinger, MD, a breast cancer specialist at Indiana University, Indianapolis, said on Twitter that “this might be the most practice changing study I heard at ASCO23.” Topical diclofenac is “widely available, affordable, [and] addresses [a] major” quality of life issue.

The study discussant at the meeting, gastrointestinal cancer specialist Pallavi Kumar, MD, of the University of Pennsylvania, Philadelphia, concurred: “For me as a GI oncologist, topical diclofenac for prevention of HFS for patients on capecitabine is practice changing,” she said.

The takeaway is “that topical diclofenac significantly reduces the incidence of grade 2 or higher HFS in patients receiving capecitabine.” The results are “very impressive,” Dr. Kumar said.

Study details

The idea for the new study came after Batra and colleagues realized that celecoxib, a COX-2 enzyme inhibitor, helps prevent capecitabine hand-foot syndrome (HFS) by blocking a key process that leads to it, the up-regulation of COX-2 and subsequent release of proinflammatory prostaglandins.

They turned to diclofenac gel hoping to get the same effect but more safely; diclofenac is also a COX-2 blocker, and its topical formulation has a strong safety record. 

To test the approach, the team randomly assigned 130 patients to topical diclofenac and 133 to placebo – the gel vehicle without the medication – while they were being treated with capecitabine for 12 weeks; 56% were being treated for breast cancer and the rest for gastrointestinal cancers.

Subjects rubbed one fingertip’s worth of gel – about half a gram – on each palm and the back of each hand twice a day. The dose was about 4 grams/day, which is well below maximal dosages for osteoarthritis (up to 32 g/day over all affected joints). Adherence to treatment was about 95% in both arms.

By the end of 12 weeks, the incidence of grade 2 or higher HFS was 3.8% in the diclofenac arm (5 patients) versus 15% (n = 20) with placebo (P = .003), a 75% risk reduction.

The incidence of any grade HFS was 6.1% in the treatment group versus 18.1% with placebo (P = .003).

Hand-foot syndrome led to dose reductions of capecitabine in 13.5% of placebo but only 3.8% of those in the diclofenac group (P = .002). 

The findings held regardless of whether patients were being treated for breast or GI cancer or if they were men or women. 

Other capecitabine-induced adverse events, including diarrhea, mucositis, and myelosuppression, were not significantly different between the groups.

The treatment arms were well balanced, with a median age of 47 years in both groups and women making up about 70% of each. About 40% of subjects in each group were on capecitabine monotherapy with the rest on combination treatments. The mean dose of capecitabine was just over 1,880 mg/m² in both groups.

At the meeting, Dr. Batra was asked if topical diclofenac would also work for another common problem in oncology: hand-food syndrome occurring as a side-effect with VEGF–tyrosine kinase inhibitors. He didn’t think so because it probably has a different cause than capecitabine HFS, one not strongly related to COX-2 up-regulation.

The study was partly funded by the Indian Supportive Care of Cancer Association. The investigators reported no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

The common side effect of hand-foot syndrome seen in patients taking capecitabine can be prevented with a cheap and safe topical gel containing 1% diclofenac, researchers reported in a study that has been hailed by experts as “practice changing.”

Hand-foot syndrome causes painful, bleeding blisters and ulcers on the palms and soles. It often leads to dose reductions and sometimes even discontinuations, both of which limit the effectiveness of capecitabine, a standard oral chemotherapy drug widely used for colorectal and breast  cancers.

In a new study presented at the annual meeting of the American Society of Clinical Oncology, Indian researchers reported that a cheap, safe, and widely available over-the-counter nonsteroidal anti-inflammatory gel containing 1% diclofenac reduced the incidence of hand-foot syndrome by 75% among patients with cancer being treated with capecitabine.

Up until now, the oral anti-inflammatory celecoxib (Celebrex) was the only agent proven to prevent the problem, but it’s rarely used because of the risk for strokes, gastric bleeding, and other issues, none of which are a concern with topical diclofenac, which osteoarthritis patients have used safely for years.

The Indian trial, dubbed D-Torch, establishes “1% topical diclofenac gel as the new standard of care to prevent capecitabine-associated hand-foot syndrome,” said investigator and study presenter Atul Batra, MD, a medical oncologist at the All India Institute of Medical Sciences, New Delhi.

Dr. Batra told ASCO Daily News that there is no need for a second trial. “We don’t feel there’s a need to replicate these results” in a larger study “because this was adequately powered, and the results speak for themselves. There’s no confusion about these results. Diclofenac is clearly effective.”

Dr. Batra also commented that his clinic now uses topical diclofenac routinely during capecitabine treatment and that he hopes oncology practices elsewhere will do the same.   

Diclofenac gel is sold under the brand name Voltaren and is also available as a generic; in the United States, a 150-gram tube costs about $18 at Walmart.
 

‘The most practice-changing study’ at ASCO 2023

Audience members at ASCO’s annual meeting immediately saw the importance of the study.

Tarah Ballinger, MD, a breast cancer specialist at Indiana University, Indianapolis, said on Twitter that “this might be the most practice changing study I heard at ASCO23.” Topical diclofenac is “widely available, affordable, [and] addresses [a] major” quality of life issue.

The study discussant at the meeting, gastrointestinal cancer specialist Pallavi Kumar, MD, of the University of Pennsylvania, Philadelphia, concurred: “For me as a GI oncologist, topical diclofenac for prevention of HFS for patients on capecitabine is practice changing,” she said.

The takeaway is “that topical diclofenac significantly reduces the incidence of grade 2 or higher HFS in patients receiving capecitabine.” The results are “very impressive,” Dr. Kumar said.

Study details

The idea for the new study came after Batra and colleagues realized that celecoxib, a COX-2 enzyme inhibitor, helps prevent capecitabine hand-foot syndrome (HFS) by blocking a key process that leads to it, the up-regulation of COX-2 and subsequent release of proinflammatory prostaglandins.

They turned to diclofenac gel hoping to get the same effect but more safely; diclofenac is also a COX-2 blocker, and its topical formulation has a strong safety record. 

To test the approach, the team randomly assigned 130 patients to topical diclofenac and 133 to placebo – the gel vehicle without the medication – while they were being treated with capecitabine for 12 weeks; 56% were being treated for breast cancer and the rest for gastrointestinal cancers.

Subjects rubbed one fingertip’s worth of gel – about half a gram – on each palm and the back of each hand twice a day. The dose was about 4 grams/day, which is well below maximal dosages for osteoarthritis (up to 32 g/day over all affected joints). Adherence to treatment was about 95% in both arms.

By the end of 12 weeks, the incidence of grade 2 or higher HFS was 3.8% in the diclofenac arm (5 patients) versus 15% (n = 20) with placebo (P = .003), a 75% risk reduction.

The incidence of any grade HFS was 6.1% in the treatment group versus 18.1% with placebo (P = .003).

Hand-foot syndrome led to dose reductions of capecitabine in 13.5% of placebo but only 3.8% of those in the diclofenac group (P = .002). 

The findings held regardless of whether patients were being treated for breast or GI cancer or if they were men or women. 

Other capecitabine-induced adverse events, including diarrhea, mucositis, and myelosuppression, were not significantly different between the groups.

The treatment arms were well balanced, with a median age of 47 years in both groups and women making up about 70% of each. About 40% of subjects in each group were on capecitabine monotherapy with the rest on combination treatments. The mean dose of capecitabine was just over 1,880 mg/m² in both groups.

At the meeting, Dr. Batra was asked if topical diclofenac would also work for another common problem in oncology: hand-food syndrome occurring as a side-effect with VEGF–tyrosine kinase inhibitors. He didn’t think so because it probably has a different cause than capecitabine HFS, one not strongly related to COX-2 up-regulation.

The study was partly funded by the Indian Supportive Care of Cancer Association. The investigators reported no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

CHICAGO – By definition, all clinical care is – or should be – patient-centered care, and that is especially true for older women with early stage breast cancer.

“Older women need to be informed of the benefits and risks of their treatment options, including the option of omitting a treatment,” said Mara Schonberg, MD, MPH, of the division of general medicine and primary care at Beth Israel Deaconess Medical Center in Boston.

“High quality shared decision-making considers a woman’s risk of recurrence, her tumor characteristics, her overall prognosis based on her general health, the lag-time to benefit from the treatment – how long will it take for this treatment to likely have an effect or a real chance of having any benefit for her – and her values and preferences,” she explained. Dr. Schonberg was speaking at a session on the management of care for older women with breast cancer held during the recent American Society of Clinical Oncology (ASCO) annual meeting.

Care for older women with a new diagnosis of early stage breast cancer is not one-size-fits all, and patients are faced with many decisions that may depend as much on personal preference as on clinical necessity, Dr. Schonberg said.

For example, patients may need to choose between mastectomy or breast conserving surgery (BCS), whether to have radiotherapy after BCS, what type of radiotherapy (e.g., whole breast, partial breast, accelerated partial breast irradiation, boost dose) to have, whether to undergo a lymph node biopsy, and whether to opt for primary endocrine therapy instead of surgery or radiation.

“It is really important that we think about all these decisions that older women face in their preference-sensitive decisions and that we include them in the decision-making, probably even starting at the time of mammography,” Dr. Schonberg said.
 

Decision-making partnership

Doctor–patient shared decision making improves patient care by helping the patients understand the best available evidence on the risks and benefits of specific choices and their alternatives, Dr. Schonberg said. Discussing and considering all the available options allows the doctor and patient to arrive together at an informed decision based on the individual patient’s needs and preferences, she emphasized.

“It’s particularly useful when there are multiple treatment options, when there’s uncertainty regarding the evidence or uncertainty regarding which patients may benefit or on the outcome, when there are both treatment advantages and disadvantages that patients must weigh, and when the decision is high impact, like for breast cancer treatment,” she said.

Shared decision-making can be complicated by barriers of time, how care is organized, lack of clinician training in patient-centered communication, and mistaken assumptions on the part of clinicians about a particular patient’s preferences or willingness to participate in the process.

Dr. Schonberg and colleagues created the website ePrognosis to consolidate prognostic indices designed to aid clinical decision-making for older adults who do not have a dominant terminal diagnosis. The site contains links to prognostic calculators, information about time to benefit for various cancer screening programs based on life expectancy, and helpful information about communicating information about prognosis, risks, and benefits to patients.
 

De-escalating surgery

Also at the session, Jennifer Tseng, MD, medical director of breast surgery at City of Hope Orange County Cancer Center, Irvine, Calif., discussed de-escalation of locoregional therapy. For some patients, this may mean skipping surgery or radiation.

“How do we de-escalate the extent of surgery, the extent of morbidity that we are imparting on our patients with surgery but still maximizing and preserving oncological outcomes?” she asked.

Currently more than 30% of new breast cancer diagnoses are in women age 70 and older, and estrogen receptor positive, HER2-negative disease is the majority biomarker profile.

At present, more than 70% of women with breast cancer in this older population will receive axillary surgery and/or radiation.

But for many patients with early, node-negative breast cancers with favorable tumor characteristics, less extensive surgery may be an appropriate option, especially for patients who have other significant comorbidities, Dr. Tseng said.

“Just at baseline, we know that mastectomy is a harder operation, it’s a harder recovery. You may be incorporating additional surgery such as reconstructive surgery, so breast-conserving surgery is always considered less invasive, less morbid,” she said.

“Do we absolutely have to do a mastectomy for a patient who has a second episode of cancer in the same breast? The answer is no,” she said, adding that omitting axillary surgery in early-stage disease may also be safe for some older patients.
 

De-escalating radiotherapy

Options for de-escalating radiation therapy include shortening the course of treatment with hypofractionation or ultra hypofractionation, reduction of treatment volumes with partial breast radiation, reducing radiation dose to normal tissues, or even in appropriate cases eliminating radiation entirely, Dr. Tseng said.

“My radiation oncologist turned to me and said, ‘This patient is now eligible for 3 days [or radiation] based on the latest trial we have open at City of Hope.’ I was like, wow, we went from 6 weeks to 3 days of radiation, but that is in the appropriate patient population with those early stage, really more favorable tumor characteristics,” she said.

Moving forward, the debate in radiation oncology is likely to focus on the option of ultra hypofractionation vs no radiation, she added.

Regarding reducing radiation volume, Dr. Tseng noted that most in-breast tumor recurrences happen within 1 cm of the original tumor bed, and partial breast irradiation targets the tumor bed with a 1- to 2-cm margin and provides excellent clinical outcomes with minimal adverse events, allowing for rapid recovery.

Deep inspiration breath holds and prone-positioning of patients with left-side tumors during beam delivery can also significantly decrease the dose to normal tissues, an especially important consideration for patients with cardiopulmonary comorbidities, she said.

Radiation may also be deferred in many older patients who may benefit from endocrine therapy alone and in those who have a very early stage and less aggressive tumor type.
 

Systemic therapy in the older patient

Etienne GC Brain, PhD, of the department of medical oncology at the Curie Institute in Paris and Saint-Cloud, France, reviewed evidence regarding systemic therapy in older patients with high-risk breast cancers.

For patients with triple-negative breast cancer pathologic stage T1b or greater he usually advises adjuvant chemotherapy with the option of neoadjuvant chemotherapy if breast-conserving surgery is a goal; for patients with HER2-positive disease, he advises 1 year of therapy with an anti-HER2 agent.

Shorter HER2 regimens may be possible for older patients, and frail older adults may have good outcomes with HER2 therapy alone, as shown recently by Japanese investigators, Dr. Brain noted.

“For lumimal disease, endocrine therapy remains the standard of treatment for me, and chemo, of course can be considered in higher risk, but the problem is we don’t know how to define this high risk, given the poor guidance provided by gene expression profiles,” he said.

For older patients, longer follow-up is needed to assess treatment benefit vs. life expectancy, Dr. Brain said, warning that the standard of care established in younger patients cannot be easily extrapolated to the care of older patients.

Dr. Schonberg disclosed authorship of review pages on preventive health for older adults for UpToDate. Dr. Tseng disclosed that she is a breast surgeon and that her discussion of radiation therapy may reflect personal bias. Dr. Brain disclosed honoraria from Lilly, Pfizer, and Seagen, consulting/advising for Daiichi Sankyo, AstraZeneca, Pfizer, and Sandoz-Novartis, and travel expenses from Pfizer.

A version of this article first appeared on Medscape.com.

CHICAGO – By definition, all clinical care is – or should be – patient-centered care, and that is especially true for older women with early stage breast cancer.

“Older women need to be informed of the benefits and risks of their treatment options, including the option of omitting a treatment,” said Mara Schonberg, MD, MPH, of the division of general medicine and primary care at Beth Israel Deaconess Medical Center in Boston.

“High quality shared decision-making considers a woman’s risk of recurrence, her tumor characteristics, her overall prognosis based on her general health, the lag-time to benefit from the treatment – how long will it take for this treatment to likely have an effect or a real chance of having any benefit for her – and her values and preferences,” she explained. Dr. Schonberg was speaking at a session on the management of care for older women with breast cancer held during the recent American Society of Clinical Oncology (ASCO) annual meeting.

Care for older women with a new diagnosis of early stage breast cancer is not one-size-fits all, and patients are faced with many decisions that may depend as much on personal preference as on clinical necessity, Dr. Schonberg said.

For example, patients may need to choose between mastectomy or breast conserving surgery (BCS), whether to have radiotherapy after BCS, what type of radiotherapy (e.g., whole breast, partial breast, accelerated partial breast irradiation, boost dose) to have, whether to undergo a lymph node biopsy, and whether to opt for primary endocrine therapy instead of surgery or radiation.

“It is really important that we think about all these decisions that older women face in their preference-sensitive decisions and that we include them in the decision-making, probably even starting at the time of mammography,” Dr. Schonberg said.
 

Decision-making partnership

Doctor–patient shared decision making improves patient care by helping the patients understand the best available evidence on the risks and benefits of specific choices and their alternatives, Dr. Schonberg said. Discussing and considering all the available options allows the doctor and patient to arrive together at an informed decision based on the individual patient’s needs and preferences, she emphasized.

“It’s particularly useful when there are multiple treatment options, when there’s uncertainty regarding the evidence or uncertainty regarding which patients may benefit or on the outcome, when there are both treatment advantages and disadvantages that patients must weigh, and when the decision is high impact, like for breast cancer treatment,” she said.

Shared decision-making can be complicated by barriers of time, how care is organized, lack of clinician training in patient-centered communication, and mistaken assumptions on the part of clinicians about a particular patient’s preferences or willingness to participate in the process.

Dr. Schonberg and colleagues created the website ePrognosis to consolidate prognostic indices designed to aid clinical decision-making for older adults who do not have a dominant terminal diagnosis. The site contains links to prognostic calculators, information about time to benefit for various cancer screening programs based on life expectancy, and helpful information about communicating information about prognosis, risks, and benefits to patients.
 

De-escalating surgery

Also at the session, Jennifer Tseng, MD, medical director of breast surgery at City of Hope Orange County Cancer Center, Irvine, Calif., discussed de-escalation of locoregional therapy. For some patients, this may mean skipping surgery or radiation.

“How do we de-escalate the extent of surgery, the extent of morbidity that we are imparting on our patients with surgery but still maximizing and preserving oncological outcomes?” she asked.

Currently more than 30% of new breast cancer diagnoses are in women age 70 and older, and estrogen receptor positive, HER2-negative disease is the majority biomarker profile.

At present, more than 70% of women with breast cancer in this older population will receive axillary surgery and/or radiation.

But for many patients with early, node-negative breast cancers with favorable tumor characteristics, less extensive surgery may be an appropriate option, especially for patients who have other significant comorbidities, Dr. Tseng said.

“Just at baseline, we know that mastectomy is a harder operation, it’s a harder recovery. You may be incorporating additional surgery such as reconstructive surgery, so breast-conserving surgery is always considered less invasive, less morbid,” she said.

“Do we absolutely have to do a mastectomy for a patient who has a second episode of cancer in the same breast? The answer is no,” she said, adding that omitting axillary surgery in early-stage disease may also be safe for some older patients.
 

De-escalating radiotherapy

Options for de-escalating radiation therapy include shortening the course of treatment with hypofractionation or ultra hypofractionation, reduction of treatment volumes with partial breast radiation, reducing radiation dose to normal tissues, or even in appropriate cases eliminating radiation entirely, Dr. Tseng said.

“My radiation oncologist turned to me and said, ‘This patient is now eligible for 3 days [or radiation] based on the latest trial we have open at City of Hope.’ I was like, wow, we went from 6 weeks to 3 days of radiation, but that is in the appropriate patient population with those early stage, really more favorable tumor characteristics,” she said.

Moving forward, the debate in radiation oncology is likely to focus on the option of ultra hypofractionation vs no radiation, she added.

Regarding reducing radiation volume, Dr. Tseng noted that most in-breast tumor recurrences happen within 1 cm of the original tumor bed, and partial breast irradiation targets the tumor bed with a 1- to 2-cm margin and provides excellent clinical outcomes with minimal adverse events, allowing for rapid recovery.

Deep inspiration breath holds and prone-positioning of patients with left-side tumors during beam delivery can also significantly decrease the dose to normal tissues, an especially important consideration for patients with cardiopulmonary comorbidities, she said.

Radiation may also be deferred in many older patients who may benefit from endocrine therapy alone and in those who have a very early stage and less aggressive tumor type.
 

Systemic therapy in the older patient

Etienne GC Brain, PhD, of the department of medical oncology at the Curie Institute in Paris and Saint-Cloud, France, reviewed evidence regarding systemic therapy in older patients with high-risk breast cancers.

For patients with triple-negative breast cancer pathologic stage T1b or greater he usually advises adjuvant chemotherapy with the option of neoadjuvant chemotherapy if breast-conserving surgery is a goal; for patients with HER2-positive disease, he advises 1 year of therapy with an anti-HER2 agent.

Shorter HER2 regimens may be possible for older patients, and frail older adults may have good outcomes with HER2 therapy alone, as shown recently by Japanese investigators, Dr. Brain noted.

“For lumimal disease, endocrine therapy remains the standard of treatment for me, and chemo, of course can be considered in higher risk, but the problem is we don’t know how to define this high risk, given the poor guidance provided by gene expression profiles,” he said.

For older patients, longer follow-up is needed to assess treatment benefit vs. life expectancy, Dr. Brain said, warning that the standard of care established in younger patients cannot be easily extrapolated to the care of older patients.

Dr. Schonberg disclosed authorship of review pages on preventive health for older adults for UpToDate. Dr. Tseng disclosed that she is a breast surgeon and that her discussion of radiation therapy may reflect personal bias. Dr. Brain disclosed honoraria from Lilly, Pfizer, and Seagen, consulting/advising for Daiichi Sankyo, AstraZeneca, Pfizer, and Sandoz-Novartis, and travel expenses from Pfizer.

A version of this article first appeared on Medscape.com.

CHICAGO – By definition, all clinical care is – or should be – patient-centered care, and that is especially true for older women with early stage breast cancer.

“Older women need to be informed of the benefits and risks of their treatment options, including the option of omitting a treatment,” said Mara Schonberg, MD, MPH, of the division of general medicine and primary care at Beth Israel Deaconess Medical Center in Boston.

“High quality shared decision-making considers a woman’s risk of recurrence, her tumor characteristics, her overall prognosis based on her general health, the lag-time to benefit from the treatment – how long will it take for this treatment to likely have an effect or a real chance of having any benefit for her – and her values and preferences,” she explained. Dr. Schonberg was speaking at a session on the management of care for older women with breast cancer held during the recent American Society of Clinical Oncology (ASCO) annual meeting.

Care for older women with a new diagnosis of early stage breast cancer is not one-size-fits all, and patients are faced with many decisions that may depend as much on personal preference as on clinical necessity, Dr. Schonberg said.

For example, patients may need to choose between mastectomy or breast conserving surgery (BCS), whether to have radiotherapy after BCS, what type of radiotherapy (e.g., whole breast, partial breast, accelerated partial breast irradiation, boost dose) to have, whether to undergo a lymph node biopsy, and whether to opt for primary endocrine therapy instead of surgery or radiation.

“It is really important that we think about all these decisions that older women face in their preference-sensitive decisions and that we include them in the decision-making, probably even starting at the time of mammography,” Dr. Schonberg said.
 

Decision-making partnership

Doctor–patient shared decision making improves patient care by helping the patients understand the best available evidence on the risks and benefits of specific choices and their alternatives, Dr. Schonberg said. Discussing and considering all the available options allows the doctor and patient to arrive together at an informed decision based on the individual patient’s needs and preferences, she emphasized.

“It’s particularly useful when there are multiple treatment options, when there’s uncertainty regarding the evidence or uncertainty regarding which patients may benefit or on the outcome, when there are both treatment advantages and disadvantages that patients must weigh, and when the decision is high impact, like for breast cancer treatment,” she said.

Shared decision-making can be complicated by barriers of time, how care is organized, lack of clinician training in patient-centered communication, and mistaken assumptions on the part of clinicians about a particular patient’s preferences or willingness to participate in the process.

Dr. Schonberg and colleagues created the website ePrognosis to consolidate prognostic indices designed to aid clinical decision-making for older adults who do not have a dominant terminal diagnosis. The site contains links to prognostic calculators, information about time to benefit for various cancer screening programs based on life expectancy, and helpful information about communicating information about prognosis, risks, and benefits to patients.
 

De-escalating surgery

Also at the session, Jennifer Tseng, MD, medical director of breast surgery at City of Hope Orange County Cancer Center, Irvine, Calif., discussed de-escalation of locoregional therapy. For some patients, this may mean skipping surgery or radiation.

“How do we de-escalate the extent of surgery, the extent of morbidity that we are imparting on our patients with surgery but still maximizing and preserving oncological outcomes?” she asked.

Currently more than 30% of new breast cancer diagnoses are in women age 70 and older, and estrogen receptor positive, HER2-negative disease is the majority biomarker profile.

At present, more than 70% of women with breast cancer in this older population will receive axillary surgery and/or radiation.

But for many patients with early, node-negative breast cancers with favorable tumor characteristics, less extensive surgery may be an appropriate option, especially for patients who have other significant comorbidities, Dr. Tseng said.

“Just at baseline, we know that mastectomy is a harder operation, it’s a harder recovery. You may be incorporating additional surgery such as reconstructive surgery, so breast-conserving surgery is always considered less invasive, less morbid,” she said.

“Do we absolutely have to do a mastectomy for a patient who has a second episode of cancer in the same breast? The answer is no,” she said, adding that omitting axillary surgery in early-stage disease may also be safe for some older patients.
 

De-escalating radiotherapy

Options for de-escalating radiation therapy include shortening the course of treatment with hypofractionation or ultra hypofractionation, reduction of treatment volumes with partial breast radiation, reducing radiation dose to normal tissues, or even in appropriate cases eliminating radiation entirely, Dr. Tseng said.

“My radiation oncologist turned to me and said, ‘This patient is now eligible for 3 days [or radiation] based on the latest trial we have open at City of Hope.’ I was like, wow, we went from 6 weeks to 3 days of radiation, but that is in the appropriate patient population with those early stage, really more favorable tumor characteristics,” she said.

Moving forward, the debate in radiation oncology is likely to focus on the option of ultra hypofractionation vs no radiation, she added.

Regarding reducing radiation volume, Dr. Tseng noted that most in-breast tumor recurrences happen within 1 cm of the original tumor bed, and partial breast irradiation targets the tumor bed with a 1- to 2-cm margin and provides excellent clinical outcomes with minimal adverse events, allowing for rapid recovery.

Deep inspiration breath holds and prone-positioning of patients with left-side tumors during beam delivery can also significantly decrease the dose to normal tissues, an especially important consideration for patients with cardiopulmonary comorbidities, she said.

Radiation may also be deferred in many older patients who may benefit from endocrine therapy alone and in those who have a very early stage and less aggressive tumor type.
 

Systemic therapy in the older patient

Etienne GC Brain, PhD, of the department of medical oncology at the Curie Institute in Paris and Saint-Cloud, France, reviewed evidence regarding systemic therapy in older patients with high-risk breast cancers.

For patients with triple-negative breast cancer pathologic stage T1b or greater he usually advises adjuvant chemotherapy with the option of neoadjuvant chemotherapy if breast-conserving surgery is a goal; for patients with HER2-positive disease, he advises 1 year of therapy with an anti-HER2 agent.

Shorter HER2 regimens may be possible for older patients, and frail older adults may have good outcomes with HER2 therapy alone, as shown recently by Japanese investigators, Dr. Brain noted.

“For lumimal disease, endocrine therapy remains the standard of treatment for me, and chemo, of course can be considered in higher risk, but the problem is we don’t know how to define this high risk, given the poor guidance provided by gene expression profiles,” he said.

For older patients, longer follow-up is needed to assess treatment benefit vs. life expectancy, Dr. Brain said, warning that the standard of care established in younger patients cannot be easily extrapolated to the care of older patients.

Dr. Schonberg disclosed authorship of review pages on preventive health for older adults for UpToDate. Dr. Tseng disclosed that she is a breast surgeon and that her discussion of radiation therapy may reflect personal bias. Dr. Brain disclosed honoraria from Lilly, Pfizer, and Seagen, consulting/advising for Daiichi Sankyo, AstraZeneca, Pfizer, and Sandoz-Novartis, and travel expenses from Pfizer.

A version of this article first appeared on Medscape.com.

In metastatic breast cancer, a fixed dose of capecitabine given on a 7-day-on, 7-day-off schedule had similar efficacy and reduced adverse events compared with the standard 14-day-on, 7-day-off schedule, in a new study.

Both progression-free survival (PFS) and overall survival (OS) were similar between the two groups, but patients on the alternative schedule experienced fewer cases of hand-foot syndrome (HFS), diarrhea, and stomatitis, and also had fewer discontinuations and dose modifications.

The Food and Drug Administration–approved dose of capecitabine is 1,250 mg/m², but 14 days of treatment can lead to significant toxicity, said Qamar Khan, MD, during a presentation of the study at the annual meeting of the American Society of Clinical Oncology. “Mathematical models applied to xenograft [animal model] data suggest that the maximum cytotoxic effect of capecitabine occurs after about 7 days of treatment, beyond which time only toxicity increases,” Dr. Khan said during his talk on the randomized control trial.

The researchers randomized 153 patients to receive a fixed 1,500-mg capecitabine dose twice per day on a 7-day-on, 7-day-off schedule (7/7), or the 1,250–mg/m² dose twice per day for 14 days followed by 7 days off (14/7). The median age was 60 years, and 85.6% were White, 8.5% were African American, 3.3% were Hispanic, 0.7% were American Indian or Alaskan Native, and 2.0% were other. With respect to disease characteristics, 44% had visceral metastasis, 78% were hormone receptor positive/HER2 negative, and 11% had triple-negative breast cancer. About two-thirds (65%) had received no prior chemotherapy.

Restricted mean survival time (RMST) at 36 months for PFS was 13.9 months in the 7/7 group and 14.6 months in the 14/7 group (difference, 0.7 months; 95.5% CI, –3.14 to 4.57 months). The objective response rate was 8.9% in the 7/7 group and 19.6% in the 14/7 group (P = .11). Median OS was 19.8 months in the 7/7 group and 17.5 months in the 14/7 group (hazard ratio, 0.76; P = .17). The RMST at 47 months for OS was 24.5 months in the 7/7 group and 20.9 months in the 14/7 group (difference, –3.6 months; 95% CI, –8.89 to 1.54 months).

The researchers found no differences in subgroup analyses by visceral metastasis, breast cancer subtype, or number of lines of previous therapy.

The toxicity profile of 7/7 was better with respect to grade 2-4 diarrhea (2.5% vs. 20.5%, P = .0008), grade 2-4 HFS (3.8% vs. 15.1%; P = .0019), and grade 2-4 mucositis (0% vs. 5.5%; P =.0001).
 

Findings back up clinical practice

“The fixed-dose capecitabine dosing is something that’s been done a lot in practice, because a lot of practitioners recognize that giving the drug for two weeks in a row with a week break is overly toxic, so it’s something we’ve been doing in the community for quite a while,” said Michael Danso, MD, who comoderated the session.

Still, the safety and efficacy data back up that general clinical practice. “There was a randomized trial and colon cancer that didn’t show [equivalent outcomes with the alternate dosing schedule]. So to see that it’s safe and effective in breast cancer is an important [finding],” said Dr. Danso, who is the Research Director at Virginia Oncology Associates, Norfolk.

During the question-and-answer following the talk, Jeffrey Kirshner, MD, a medical oncologist at Hematology-Oncology Associates of Central New York, East Syracuse, noted that his practice has used a similar schedule for years. “I really commend you for doing that study. It really supports what many of us in the real world have been doing for many years. We figured this out empirically, both upfront and when patients can’t tolerate [the 14/7 schedule].”
 

Fixed dose versus body surface area

Dr. Kirshner also said his practice uses a dose of 1 g/m² of body surface area on a 7/7 schedule rather than a fixed dose as was done in Dr. Khan’s study. “If you use the higher dose, you might have seen a higher response rate because many of our patients, as you know, have a body surface [BSA] area much greater than 1.5 g/m².”

Dr. Khan responded that there is little data available on BSA dosing. “We selected 1,500 mg because a lot of people are practicing that, and for convenience, and that most patients who started at a higher dose eventually wound up on a dose of 1,500 mg twice daily.”

Dr. Kirshner also pointed out that the study was conducted in a population with metastatic disease. “I think we need to emphasize that we do not use the 7/7 regimen in a potentially curative setting, such as the CREATE-X regimen for triple-negative [breast cancer].”

Dr. Khan agreed. “I would use the same dose as the CREATE-X trial in the adjuvant setting,” he responded.

Dr. Danso has received honoraria from Amgen and has consulted or advised Immunomedics, Novartis, Pfizer, and Seagen. Dr. Khan and Dr. Kirshner have no relevant financial disclosures.

In metastatic breast cancer, a fixed dose of capecitabine given on a 7-day-on, 7-day-off schedule had similar efficacy and reduced adverse events compared with the standard 14-day-on, 7-day-off schedule, in a new study.

Both progression-free survival (PFS) and overall survival (OS) were similar between the two groups, but patients on the alternative schedule experienced fewer cases of hand-foot syndrome (HFS), diarrhea, and stomatitis, and also had fewer discontinuations and dose modifications.

The Food and Drug Administration–approved dose of capecitabine is 1,250 mg/m², but 14 days of treatment can lead to significant toxicity, said Qamar Khan, MD, during a presentation of the study at the annual meeting of the American Society of Clinical Oncology. “Mathematical models applied to xenograft [animal model] data suggest that the maximum cytotoxic effect of capecitabine occurs after about 7 days of treatment, beyond which time only toxicity increases,” Dr. Khan said during his talk on the randomized control trial.

The researchers randomized 153 patients to receive a fixed 1,500-mg capecitabine dose twice per day on a 7-day-on, 7-day-off schedule (7/7), or the 1,250–mg/m² dose twice per day for 14 days followed by 7 days off (14/7). The median age was 60 years, and 85.6% were White, 8.5% were African American, 3.3% were Hispanic, 0.7% were American Indian or Alaskan Native, and 2.0% were other. With respect to disease characteristics, 44% had visceral metastasis, 78% were hormone receptor positive/HER2 negative, and 11% had triple-negative breast cancer. About two-thirds (65%) had received no prior chemotherapy.

Restricted mean survival time (RMST) at 36 months for PFS was 13.9 months in the 7/7 group and 14.6 months in the 14/7 group (difference, 0.7 months; 95.5% CI, –3.14 to 4.57 months). The objective response rate was 8.9% in the 7/7 group and 19.6% in the 14/7 group (P = .11). Median OS was 19.8 months in the 7/7 group and 17.5 months in the 14/7 group (hazard ratio, 0.76; P = .17). The RMST at 47 months for OS was 24.5 months in the 7/7 group and 20.9 months in the 14/7 group (difference, –3.6 months; 95% CI, –8.89 to 1.54 months).

The researchers found no differences in subgroup analyses by visceral metastasis, breast cancer subtype, or number of lines of previous therapy.

The toxicity profile of 7/7 was better with respect to grade 2-4 diarrhea (2.5% vs. 20.5%, P = .0008), grade 2-4 HFS (3.8% vs. 15.1%; P = .0019), and grade 2-4 mucositis (0% vs. 5.5%; P =.0001).
 

Findings back up clinical practice

“The fixed-dose capecitabine dosing is something that’s been done a lot in practice, because a lot of practitioners recognize that giving the drug for two weeks in a row with a week break is overly toxic, so it’s something we’ve been doing in the community for quite a while,” said Michael Danso, MD, who comoderated the session.

Still, the safety and efficacy data back up that general clinical practice. “There was a randomized trial and colon cancer that didn’t show [equivalent outcomes with the alternate dosing schedule]. So to see that it’s safe and effective in breast cancer is an important [finding],” said Dr. Danso, who is the Research Director at Virginia Oncology Associates, Norfolk.

During the question-and-answer following the talk, Jeffrey Kirshner, MD, a medical oncologist at Hematology-Oncology Associates of Central New York, East Syracuse, noted that his practice has used a similar schedule for years. “I really commend you for doing that study. It really supports what many of us in the real world have been doing for many years. We figured this out empirically, both upfront and when patients can’t tolerate [the 14/7 schedule].”
 

Fixed dose versus body surface area

Dr. Kirshner also said his practice uses a dose of 1 g/m² of body surface area on a 7/7 schedule rather than a fixed dose as was done in Dr. Khan’s study. “If you use the higher dose, you might have seen a higher response rate because many of our patients, as you know, have a body surface [BSA] area much greater than 1.5 g/m².”

Dr. Khan responded that there is little data available on BSA dosing. “We selected 1,500 mg because a lot of people are practicing that, and for convenience, and that most patients who started at a higher dose eventually wound up on a dose of 1,500 mg twice daily.”

Dr. Kirshner also pointed out that the study was conducted in a population with metastatic disease. “I think we need to emphasize that we do not use the 7/7 regimen in a potentially curative setting, such as the CREATE-X regimen for triple-negative [breast cancer].”

Dr. Khan agreed. “I would use the same dose as the CREATE-X trial in the adjuvant setting,” he responded.

Dr. Danso has received honoraria from Amgen and has consulted or advised Immunomedics, Novartis, Pfizer, and Seagen. Dr. Khan and Dr. Kirshner have no relevant financial disclosures.

In metastatic breast cancer, a fixed dose of capecitabine given on a 7-day-on, 7-day-off schedule had similar efficacy and reduced adverse events compared with the standard 14-day-on, 7-day-off schedule, in a new study.

Both progression-free survival (PFS) and overall survival (OS) were similar between the two groups, but patients on the alternative schedule experienced fewer cases of hand-foot syndrome (HFS), diarrhea, and stomatitis, and also had fewer discontinuations and dose modifications.

The Food and Drug Administration–approved dose of capecitabine is 1,250 mg/m², but 14 days of treatment can lead to significant toxicity, said Qamar Khan, MD, during a presentation of the study at the annual meeting of the American Society of Clinical Oncology. “Mathematical models applied to xenograft [animal model] data suggest that the maximum cytotoxic effect of capecitabine occurs after about 7 days of treatment, beyond which time only toxicity increases,” Dr. Khan said during his talk on the randomized control trial.

The researchers randomized 153 patients to receive a fixed 1,500-mg capecitabine dose twice per day on a 7-day-on, 7-day-off schedule (7/7), or the 1,250–mg/m² dose twice per day for 14 days followed by 7 days off (14/7). The median age was 60 years, and 85.6% were White, 8.5% were African American, 3.3% were Hispanic, 0.7% were American Indian or Alaskan Native, and 2.0% were other. With respect to disease characteristics, 44% had visceral metastasis, 78% were hormone receptor positive/HER2 negative, and 11% had triple-negative breast cancer. About two-thirds (65%) had received no prior chemotherapy.

Restricted mean survival time (RMST) at 36 months for PFS was 13.9 months in the 7/7 group and 14.6 months in the 14/7 group (difference, 0.7 months; 95.5% CI, –3.14 to 4.57 months). The objective response rate was 8.9% in the 7/7 group and 19.6% in the 14/7 group (P = .11). Median OS was 19.8 months in the 7/7 group and 17.5 months in the 14/7 group (hazard ratio, 0.76; P = .17). The RMST at 47 months for OS was 24.5 months in the 7/7 group and 20.9 months in the 14/7 group (difference, –3.6 months; 95% CI, –8.89 to 1.54 months).

The researchers found no differences in subgroup analyses by visceral metastasis, breast cancer subtype, or number of lines of previous therapy.

The toxicity profile of 7/7 was better with respect to grade 2-4 diarrhea (2.5% vs. 20.5%, P = .0008), grade 2-4 HFS (3.8% vs. 15.1%; P = .0019), and grade 2-4 mucositis (0% vs. 5.5%; P =.0001).
 

Findings back up clinical practice

“The fixed-dose capecitabine dosing is something that’s been done a lot in practice, because a lot of practitioners recognize that giving the drug for two weeks in a row with a week break is overly toxic, so it’s something we’ve been doing in the community for quite a while,” said Michael Danso, MD, who comoderated the session.

Still, the safety and efficacy data back up that general clinical practice. “There was a randomized trial and colon cancer that didn’t show [equivalent outcomes with the alternate dosing schedule]. So to see that it’s safe and effective in breast cancer is an important [finding],” said Dr. Danso, who is the Research Director at Virginia Oncology Associates, Norfolk.

During the question-and-answer following the talk, Jeffrey Kirshner, MD, a medical oncologist at Hematology-Oncology Associates of Central New York, East Syracuse, noted that his practice has used a similar schedule for years. “I really commend you for doing that study. It really supports what many of us in the real world have been doing for many years. We figured this out empirically, both upfront and when patients can’t tolerate [the 14/7 schedule].”
 

Fixed dose versus body surface area

Dr. Kirshner also said his practice uses a dose of 1 g/m² of body surface area on a 7/7 schedule rather than a fixed dose as was done in Dr. Khan’s study. “If you use the higher dose, you might have seen a higher response rate because many of our patients, as you know, have a body surface [BSA] area much greater than 1.5 g/m².”

Dr. Khan responded that there is little data available on BSA dosing. “We selected 1,500 mg because a lot of people are practicing that, and for convenience, and that most patients who started at a higher dose eventually wound up on a dose of 1,500 mg twice daily.”

Dr. Kirshner also pointed out that the study was conducted in a population with metastatic disease. “I think we need to emphasize that we do not use the 7/7 regimen in a potentially curative setting, such as the CREATE-X regimen for triple-negative [breast cancer].”

Dr. Khan agreed. “I would use the same dose as the CREATE-X trial in the adjuvant setting,” he responded.

Dr. Danso has received honoraria from Amgen and has consulted or advised Immunomedics, Novartis, Pfizer, and Seagen. Dr. Khan and Dr. Kirshner have no relevant financial disclosures.

Triple-negative breast cancer (TNBC) is characterized by the absence of hormonal receptors and human epidermal growth factor receptor 2 (HER2) expression. Historically, treatments targeting HER2 were found to be ineffective in patients with TNBC and known HER2-zero status. Researchers more recently identified a new type of TNBC involving patients with low expression of HER2. Patients with this type of breast cancer, now referred to as HER2-low, have immunohistochemical (IHC) analysis scores of 1+ or 2+ and negative in situ hybridization (ISH) stain.

In a new study, patients with TNBC who initially tested as having HER2-zero status were later found to have HER2-low status following repeated biopsies. These HER2-low results were of great clinical significance for this patient population, said Yael Bar, MD, PhD, during her presentation of the research, at the annual meeting of the American Society of Clinical Oncology (ASCO).

Previously, the DESTINY-Breast04 trial demonstrated that the antibody-drug conjugate (ADC) trastuzumab deruxtecan (T-DXd) improved progression-free survival (PFS) and overall survival (OS) for patients with HER2-low metastatic breast cancer. “As a result [of the DESTINY-Breast04 findings], T-DXd is now approved for HER2-low but not HER2-zero triple-negative metastatic breast cancer."

“While HER2-low is detected in about 30%-50% of patients with triple-negative breast cancer, several studies have shown that HER2 status is heterogeneous and also dynamic over time, said Dr. Bar, who is an international research fellow in the breast cancer group at Mass General Cancer Center, Boston.

In the new study, Dr. Bar and her co-authors retrospectively identified 512 TNBC patients from 2000 to 2022 from an institutional database. They included core, surgical, or metastatic biopsies. Participants had a mean age of 52 years, with 54% over age 50. They were 83% White, 7% African American, 5% Asian, 3% Hispanic, and 2% other. Stage II was most common at diagnosis at 48%, followed by stage 1 (28%), stage 3 (14%), and stage IV (8%).

Most patients had undergone one (38%) or two (45%) biopsies, while 9% underwent three biopsies, 6% underwent four biopsies, and 2% underwent five or more.

Among all 512 patients in the study, 60% had a HER2-low result on their first biopsy. As of the second biopsy, 73% had at least one HER2-low result, with 13% of the first HER2-low results occurring at the second biopsy. As of the third biopsy, 81% had a HER2-low result, with 9% occurring for the first time. At the fourth biopsy, 86% had a positive result, with 8% occurring for the first time. All patients with five or more biopsies had at least one HER2-low result and none were first-time results.

At the second biopsy, a HER2-low result was detected for 32% of patients for the first time. At the third biopsy, a new HER2-low result was detected in 33%, and at the fourth biopsy, a new HER-2 result was detected in 38%.

The researchers matched early and metastatic biopsies in 71 patients, and 44% had changed status: 68% of those with a status change went HER2-low to HER2-zero, 26% from HER2-zero to HER2-low, and 6% from HER2-low to HER2-positive. Among 50 patients with matched metastatic biopsies, 33% had a change in status, with 63% going from HER2-zero to HER2-low, 31% from HER2-low to HER2-zero, and 6% from HER2-low to HER2-positive.

“We showed here that repeat biopsies can identify new HER2-low results for patients who were previously ineligible for T-DXd; and therefore, we think that a repeat biopsy could be considered if feasible and safe. Also, if a repeat biopsy is performed for any reason, but mainly upon metastatic recurrence, receptors should be retested,” said Dr. Bar.

After Dr. Bar’s presentation, Barbara Pistilli, MD served as a discussant. She noted the increased HER2-low results over successive biopsies. “However, here the question is, are these results related to the changes in the analytical methods over the past 20 years or the changes in the guidelines in terms of definition of HER2 status, or are they more related to a true evolution of HER2 status with the evolution of the disease?” she said during her presentation. Dr. Pistilli is chair of the breast disease committee at Gustave Roussy in Villejuif, France.

She also said that HER2 expression can vary even between different parts of the same tumor and called for alternative methods to following HER2 expression. “I don’t think that we can follow our patients with multiple biopsies over the disease evolution, so we have to find other tools, such as target-positive [circulating tumor cells], or antibody-radiolabeled PET scan in order to better follow the intermetastasis target heterogeneity over time, and finally define what is the optimal ADC sequential strategy for each patient,” said Dr. Pistilli.

Comoderator Michael Danso, MD, also weighed in when asked for comment. 

“It was an important trial to show that serial biopsies potentially allow more patients to receive trastuzumab deruxtecan,” said Dr. Danso, who is the research director at Virginia Oncology Associates, Norfolk. However, he pointed out the concerns of a statistician who had spoken up during the question-and-answer session who said that the positive results could simply be the consequence of repeated testing. “If you do a test often enough, statistically you’re going to get a difference in outcome. That was an important point made. Also, if you’re going to get 100% of patients who are eventually going to [develop HER2-low status], the question is, can you just treat everybody with trastuzumab deruxtecan and not do these sequential biopsies? Obviously that is subject to cost; it’s subject to toxicity as well, so you probably want documentation that there is a HER2-low result,” said Dr. Danso.

Dr. Bar has no relevant financial disclosures. Dr. Pistilli has consulted for or advised AstraZeneca, Daiichi Sankyo/UCB Japan, Myriad Genetics, Novartis, PIERRE FABRE, and Puma Biotechnology. She has received research funding through her institution from AstraZeneca, Daiichi Sankyo, Gilead Sciences, Merus, Pfizer, and Puma Biotechnology. She has received travel or accommodation expenses from AstraZeneca, Daiichi Sankyo Europe, MSD Oncology, Novartis, Pfizer, and Pierre Fabre. Dr. Danso has received honoraria from Amgen and has consulted or advised Immunomedics, Novartis, Pfizer, and Seagen.

*This story was updated on 6/13/2023.

Triple-negative breast cancer (TNBC) is characterized by the absence of hormonal receptors and human epidermal growth factor receptor 2 (HER2) expression. Historically, treatments targeting HER2 were found to be ineffective in patients with TNBC and known HER2-zero status. Researchers more recently identified a new type of TNBC involving patients with low expression of HER2. Patients with this type of breast cancer, now referred to as HER2-low, have immunohistochemical (IHC) analysis scores of 1+ or 2+ and negative in situ hybridization (ISH) stain.

In a new study, patients with TNBC who initially tested as having HER2-zero status were later found to have HER2-low status following repeated biopsies. These HER2-low results were of great clinical significance for this patient population, said Yael Bar, MD, PhD, during her presentation of the research, at the annual meeting of the American Society of Clinical Oncology (ASCO).

Previously, the DESTINY-Breast04 trial demonstrated that the antibody-drug conjugate (ADC) trastuzumab deruxtecan (T-DXd) improved progression-free survival (PFS) and overall survival (OS) for patients with HER2-low metastatic breast cancer. “As a result [of the DESTINY-Breast04 findings], T-DXd is now approved for HER2-low but not HER2-zero triple-negative metastatic breast cancer."

“While HER2-low is detected in about 30%-50% of patients with triple-negative breast cancer, several studies have shown that HER2 status is heterogeneous and also dynamic over time, said Dr. Bar, who is an international research fellow in the breast cancer group at Mass General Cancer Center, Boston.

In the new study, Dr. Bar and her co-authors retrospectively identified 512 TNBC patients from 2000 to 2022 from an institutional database. They included core, surgical, or metastatic biopsies. Participants had a mean age of 52 years, with 54% over age 50. They were 83% White, 7% African American, 5% Asian, 3% Hispanic, and 2% other. Stage II was most common at diagnosis at 48%, followed by stage 1 (28%), stage 3 (14%), and stage IV (8%).

Most patients had undergone one (38%) or two (45%) biopsies, while 9% underwent three biopsies, 6% underwent four biopsies, and 2% underwent five or more.

Among all 512 patients in the study, 60% had a HER2-low result on their first biopsy. As of the second biopsy, 73% had at least one HER2-low result, with 13% of the first HER2-low results occurring at the second biopsy. As of the third biopsy, 81% had a HER2-low result, with 9% occurring for the first time. At the fourth biopsy, 86% had a positive result, with 8% occurring for the first time. All patients with five or more biopsies had at least one HER2-low result and none were first-time results.

At the second biopsy, a HER2-low result was detected for 32% of patients for the first time. At the third biopsy, a new HER2-low result was detected in 33%, and at the fourth biopsy, a new HER-2 result was detected in 38%.

The researchers matched early and metastatic biopsies in 71 patients, and 44% had changed status: 68% of those with a status change went HER2-low to HER2-zero, 26% from HER2-zero to HER2-low, and 6% from HER2-low to HER2-positive. Among 50 patients with matched metastatic biopsies, 33% had a change in status, with 63% going from HER2-zero to HER2-low, 31% from HER2-low to HER2-zero, and 6% from HER2-low to HER2-positive.

“We showed here that repeat biopsies can identify new HER2-low results for patients who were previously ineligible for T-DXd; and therefore, we think that a repeat biopsy could be considered if feasible and safe. Also, if a repeat biopsy is performed for any reason, but mainly upon metastatic recurrence, receptors should be retested,” said Dr. Bar.

After Dr. Bar’s presentation, Barbara Pistilli, MD served as a discussant. She noted the increased HER2-low results over successive biopsies. “However, here the question is, are these results related to the changes in the analytical methods over the past 20 years or the changes in the guidelines in terms of definition of HER2 status, or are they more related to a true evolution of HER2 status with the evolution of the disease?” she said during her presentation. Dr. Pistilli is chair of the breast disease committee at Gustave Roussy in Villejuif, France.

She also said that HER2 expression can vary even between different parts of the same tumor and called for alternative methods to following HER2 expression. “I don’t think that we can follow our patients with multiple biopsies over the disease evolution, so we have to find other tools, such as target-positive [circulating tumor cells], or antibody-radiolabeled PET scan in order to better follow the intermetastasis target heterogeneity over time, and finally define what is the optimal ADC sequential strategy for each patient,” said Dr. Pistilli.

Comoderator Michael Danso, MD, also weighed in when asked for comment. 

“It was an important trial to show that serial biopsies potentially allow more patients to receive trastuzumab deruxtecan,” said Dr. Danso, who is the research director at Virginia Oncology Associates, Norfolk. However, he pointed out the concerns of a statistician who had spoken up during the question-and-answer session who said that the positive results could simply be the consequence of repeated testing. “If you do a test often enough, statistically you’re going to get a difference in outcome. That was an important point made. Also, if you’re going to get 100% of patients who are eventually going to [develop HER2-low status], the question is, can you just treat everybody with trastuzumab deruxtecan and not do these sequential biopsies? Obviously that is subject to cost; it’s subject to toxicity as well, so you probably want documentation that there is a HER2-low result,” said Dr. Danso.

Dr. Bar has no relevant financial disclosures. Dr. Pistilli has consulted for or advised AstraZeneca, Daiichi Sankyo/UCB Japan, Myriad Genetics, Novartis, PIERRE FABRE, and Puma Biotechnology. She has received research funding through her institution from AstraZeneca, Daiichi Sankyo, Gilead Sciences, Merus, Pfizer, and Puma Biotechnology. She has received travel or accommodation expenses from AstraZeneca, Daiichi Sankyo Europe, MSD Oncology, Novartis, Pfizer, and Pierre Fabre. Dr. Danso has received honoraria from Amgen and has consulted or advised Immunomedics, Novartis, Pfizer, and Seagen.

*This story was updated on 6/13/2023.

Triple-negative breast cancer (TNBC) is characterized by the absence of hormonal receptors and human epidermal growth factor receptor 2 (HER2) expression. Historically, treatments targeting HER2 were found to be ineffective in patients with TNBC and known HER2-zero status. Researchers more recently identified a new type of TNBC involving patients with low expression of HER2. Patients with this type of breast cancer, now referred to as HER2-low, have immunohistochemical (IHC) analysis scores of 1+ or 2+ and negative in situ hybridization (ISH) stain.

In a new study, patients with TNBC who initially tested as having HER2-zero status were later found to have HER2-low status following repeated biopsies. These HER2-low results were of great clinical significance for this patient population, said Yael Bar, MD, PhD, during her presentation of the research, at the annual meeting of the American Society of Clinical Oncology (ASCO).

Previously, the DESTINY-Breast04 trial demonstrated that the antibody-drug conjugate (ADC) trastuzumab deruxtecan (T-DXd) improved progression-free survival (PFS) and overall survival (OS) for patients with HER2-low metastatic breast cancer. “As a result [of the DESTINY-Breast04 findings], T-DXd is now approved for HER2-low but not HER2-zero triple-negative metastatic breast cancer."

“While HER2-low is detected in about 30%-50% of patients with triple-negative breast cancer, several studies have shown that HER2 status is heterogeneous and also dynamic over time, said Dr. Bar, who is an international research fellow in the breast cancer group at Mass General Cancer Center, Boston.

In the new study, Dr. Bar and her co-authors retrospectively identified 512 TNBC patients from 2000 to 2022 from an institutional database. They included core, surgical, or metastatic biopsies. Participants had a mean age of 52 years, with 54% over age 50. They were 83% White, 7% African American, 5% Asian, 3% Hispanic, and 2% other. Stage II was most common at diagnosis at 48%, followed by stage 1 (28%), stage 3 (14%), and stage IV (8%).

Most patients had undergone one (38%) or two (45%) biopsies, while 9% underwent three biopsies, 6% underwent four biopsies, and 2% underwent five or more.

Among all 512 patients in the study, 60% had a HER2-low result on their first biopsy. As of the second biopsy, 73% had at least one HER2-low result, with 13% of the first HER2-low results occurring at the second biopsy. As of the third biopsy, 81% had a HER2-low result, with 9% occurring for the first time. At the fourth biopsy, 86% had a positive result, with 8% occurring for the first time. All patients with five or more biopsies had at least one HER2-low result and none were first-time results.

At the second biopsy, a HER2-low result was detected for 32% of patients for the first time. At the third biopsy, a new HER2-low result was detected in 33%, and at the fourth biopsy, a new HER-2 result was detected in 38%.

The researchers matched early and metastatic biopsies in 71 patients, and 44% had changed status: 68% of those with a status change went HER2-low to HER2-zero, 26% from HER2-zero to HER2-low, and 6% from HER2-low to HER2-positive. Among 50 patients with matched metastatic biopsies, 33% had a change in status, with 63% going from HER2-zero to HER2-low, 31% from HER2-low to HER2-zero, and 6% from HER2-low to HER2-positive.

“We showed here that repeat biopsies can identify new HER2-low results for patients who were previously ineligible for T-DXd; and therefore, we think that a repeat biopsy could be considered if feasible and safe. Also, if a repeat biopsy is performed for any reason, but mainly upon metastatic recurrence, receptors should be retested,” said Dr. Bar.

After Dr. Bar’s presentation, Barbara Pistilli, MD served as a discussant. She noted the increased HER2-low results over successive biopsies. “However, here the question is, are these results related to the changes in the analytical methods over the past 20 years or the changes in the guidelines in terms of definition of HER2 status, or are they more related to a true evolution of HER2 status with the evolution of the disease?” she said during her presentation. Dr. Pistilli is chair of the breast disease committee at Gustave Roussy in Villejuif, France.

She also said that HER2 expression can vary even between different parts of the same tumor and called for alternative methods to following HER2 expression. “I don’t think that we can follow our patients with multiple biopsies over the disease evolution, so we have to find other tools, such as target-positive [circulating tumor cells], or antibody-radiolabeled PET scan in order to better follow the intermetastasis target heterogeneity over time, and finally define what is the optimal ADC sequential strategy for each patient,” said Dr. Pistilli.

Comoderator Michael Danso, MD, also weighed in when asked for comment. 

“It was an important trial to show that serial biopsies potentially allow more patients to receive trastuzumab deruxtecan,” said Dr. Danso, who is the research director at Virginia Oncology Associates, Norfolk. However, he pointed out the concerns of a statistician who had spoken up during the question-and-answer session who said that the positive results could simply be the consequence of repeated testing. “If you do a test often enough, statistically you’re going to get a difference in outcome. That was an important point made. Also, if you’re going to get 100% of patients who are eventually going to [develop HER2-low status], the question is, can you just treat everybody with trastuzumab deruxtecan and not do these sequential biopsies? Obviously that is subject to cost; it’s subject to toxicity as well, so you probably want documentation that there is a HER2-low result,” said Dr. Danso.

Dr. Bar has no relevant financial disclosures. Dr. Pistilli has consulted for or advised AstraZeneca, Daiichi Sankyo/UCB Japan, Myriad Genetics, Novartis, PIERRE FABRE, and Puma Biotechnology. She has received research funding through her institution from AstraZeneca, Daiichi Sankyo, Gilead Sciences, Merus, Pfizer, and Puma Biotechnology. She has received travel or accommodation expenses from AstraZeneca, Daiichi Sankyo Europe, MSD Oncology, Novartis, Pfizer, and Pierre Fabre. Dr. Danso has received honoraria from Amgen and has consulted or advised Immunomedics, Novartis, Pfizer, and Seagen.

*This story was updated on 6/13/2023.

CHICAGO – Nearly 60% of health care providers surveyed failed to choose the same treatment strategies for HER2– early breast cancer as a panel of five oncologists with expertise in breast cancer, a new study finds.

The discrepancy suggests that many providers aren’t aware of the findings of recent landmark trials that formed the basis of the panel’s opinions, said study coauthor Denise A. Yardley, MD, of Tennessee Oncology and Sarah Cannon Research Institute in Nashville, in an interview. The findings, based on responses to a treatment decision tool, were presented in a poster at the annual meeting of the American Society of Clinical Oncology.

Study methods and results

For the new study, researchers analyzed how 547 providers – and the panel – responded to 10 case scenarios in high-risk HER2– early breast cancer between June 2022 and January 2023.

Among the providers surveyed, 72% identified as physicians, including oncologists, hematologists/oncologists, surgery oncologists, radiation oncologists, and pathologists. One percent said they were nurse practitioners or physician assistants, 7% said they were pharmacists, 1% were nurses, and the specific roles of the remaining 19% were unknown, but included medical students, according to Dr. Yardley, who is a breast cancer oncologist.

The study authors developed the free decision tool – available via the medical education company Clinical Care Options – to help oncologists navigate new treatment options for high-risk HER2– early breast cancer. The Food and Drug Administration has recently approved drugs such as abemaciclib, olaparib, and pembrolizumab for the condition.

Health care providers enter details into the tool about their patients along with their intended treatment plans. The tool then shows them recommendations for treatment from a panel of five oncologists with expertise in oncology. The members of the panel based their perspectives on the findings of the KEYNOTE-522 (pembrolizumab), OlympiA (olaparib), and monarchE (abemaciclib) trials.

The oncologists with expertise in breast cancer, who provided recommendations in March 2022, generally agreed about the best treatments, Dr. Yardley said.

The other health care providers surveyed didn’t agree with the breast cancer experts about the best treatment 58.8% of the time.

For example, one scenario describes a HR+, HER2– patient with no deleterious BRCA mutation – or unknown status – who fits the monarchE high-risk criteria. All the breast cancer experts on the panel recommended abemaciclib and endocrine therapy. But 203 providers supported a variety of strategies: endocrine therapy alone (9%), chemotherapy followed by endocrine therapy (49%), and olaparib and endocrine therapy (2%). Only 37% opted for abemaciclib and endocrine therapy, and 4% were uncertain.

Another scenario describes a patient with triple-negative breast cancer with no residual disease after neoadjuvant chemotherapy. All the experts agreed on a strategy of no adjuvant therapy plus observation. Forty percent of 25 providers agreed with this approach, but 24% were uncertain, 12% chose pembrolizumab, and 24% chose capecitabine.

In many cases, providers chose more intensive treatment options than the experts did, Dr. Yardley said.

Overtreatment in cancer is often a reflex for oncologists, she said, although “we’re learning to deescalate these treatment algorithms where there is really no benefit [to extra treatment].”

“It’s a challenge for some of these oncologists who are busy and dealing with multiple solid tumor types to keep up with the nuances of a rapidly changing field,” Dr. Yardley noted.

Many community oncologists aren’t specialists in one type of cancer and must try to keep up with treatment recommendations regarding multiple types, she continued.
 

Decision tool’s value explained

According to the study, 32% of providers changed their treatment choices in clinical practice after they learned about the expert perspectives via the decision tool; 46% said the expert opinions confirmed that their choices were best practice.

The value of the tool is its ability to help providers make better decisions about patient care, Dr. Yardley said. “There seems to be a need for this kind of support.”

In an interview, University of Pittsburgh Medical Center oncologist Adam M. Brufsky, MD, PhD – who wasn’t involved with the study – said he was surprised by the amount of disagreement between the expert and provider perspectives on treatment. However, he noted that community oncologists – unlike the breast cancer experts – often don’t see just one type of cancer.

“You just have to know so much now as an oncologist,” Dr. Brufsky said. He recommended that colleagues take advantage of decision support tools, such as cancer treatment pathways.

The study was funded by AstraZeneca, Lilly, and Merck Sharp & Dohme. Dr. Yardley has no disclosures, and disclosure information from other authors was not available. Dr. Brufsky discloses consulting support from AstraZeneca, Lilly, and Merck and grants from AstraZeneca.

CHICAGO – Nearly 60% of health care providers surveyed failed to choose the same treatment strategies for HER2– early breast cancer as a panel of five oncologists with expertise in breast cancer, a new study finds.

The discrepancy suggests that many providers aren’t aware of the findings of recent landmark trials that formed the basis of the panel’s opinions, said study coauthor Denise A. Yardley, MD, of Tennessee Oncology and Sarah Cannon Research Institute in Nashville, in an interview. The findings, based on responses to a treatment decision tool, were presented in a poster at the annual meeting of the American Society of Clinical Oncology.

Study methods and results

For the new study, researchers analyzed how 547 providers – and the panel – responded to 10 case scenarios in high-risk HER2– early breast cancer between June 2022 and January 2023.

Among the providers surveyed, 72% identified as physicians, including oncologists, hematologists/oncologists, surgery oncologists, radiation oncologists, and pathologists. One percent said they were nurse practitioners or physician assistants, 7% said they were pharmacists, 1% were nurses, and the specific roles of the remaining 19% were unknown, but included medical students, according to Dr. Yardley, who is a breast cancer oncologist.

The study authors developed the free decision tool – available via the medical education company Clinical Care Options – to help oncologists navigate new treatment options for high-risk HER2– early breast cancer. The Food and Drug Administration has recently approved drugs such as abemaciclib, olaparib, and pembrolizumab for the condition.

Health care providers enter details into the tool about their patients along with their intended treatment plans. The tool then shows them recommendations for treatment from a panel of five oncologists with expertise in oncology. The members of the panel based their perspectives on the findings of the KEYNOTE-522 (pembrolizumab), OlympiA (olaparib), and monarchE (abemaciclib) trials.

The oncologists with expertise in breast cancer, who provided recommendations in March 2022, generally agreed about the best treatments, Dr. Yardley said.

The other health care providers surveyed didn’t agree with the breast cancer experts about the best treatment 58.8% of the time.

For example, one scenario describes a HR+, HER2– patient with no deleterious BRCA mutation – or unknown status – who fits the monarchE high-risk criteria. All the breast cancer experts on the panel recommended abemaciclib and endocrine therapy. But 203 providers supported a variety of strategies: endocrine therapy alone (9%), chemotherapy followed by endocrine therapy (49%), and olaparib and endocrine therapy (2%). Only 37% opted for abemaciclib and endocrine therapy, and 4% were uncertain.

Another scenario describes a patient with triple-negative breast cancer with no residual disease after neoadjuvant chemotherapy. All the experts agreed on a strategy of no adjuvant therapy plus observation. Forty percent of 25 providers agreed with this approach, but 24% were uncertain, 12% chose pembrolizumab, and 24% chose capecitabine.

In many cases, providers chose more intensive treatment options than the experts did, Dr. Yardley said.

Overtreatment in cancer is often a reflex for oncologists, she said, although “we’re learning to deescalate these treatment algorithms where there is really no benefit [to extra treatment].”

“It’s a challenge for some of these oncologists who are busy and dealing with multiple solid tumor types to keep up with the nuances of a rapidly changing field,” Dr. Yardley noted.

Many community oncologists aren’t specialists in one type of cancer and must try to keep up with treatment recommendations regarding multiple types, she continued.
 

Decision tool’s value explained

According to the study, 32% of providers changed their treatment choices in clinical practice after they learned about the expert perspectives via the decision tool; 46% said the expert opinions confirmed that their choices were best practice.

The value of the tool is its ability to help providers make better decisions about patient care, Dr. Yardley said. “There seems to be a need for this kind of support.”

In an interview, University of Pittsburgh Medical Center oncologist Adam M. Brufsky, MD, PhD – who wasn’t involved with the study – said he was surprised by the amount of disagreement between the expert and provider perspectives on treatment. However, he noted that community oncologists – unlike the breast cancer experts – often don’t see just one type of cancer.

“You just have to know so much now as an oncologist,” Dr. Brufsky said. He recommended that colleagues take advantage of decision support tools, such as cancer treatment pathways.

The study was funded by AstraZeneca, Lilly, and Merck Sharp & Dohme. Dr. Yardley has no disclosures, and disclosure information from other authors was not available. Dr. Brufsky discloses consulting support from AstraZeneca, Lilly, and Merck and grants from AstraZeneca.

CHICAGO – Nearly 60% of health care providers surveyed failed to choose the same treatment strategies for HER2– early breast cancer as a panel of five oncologists with expertise in breast cancer, a new study finds.

The discrepancy suggests that many providers aren’t aware of the findings of recent landmark trials that formed the basis of the panel’s opinions, said study coauthor Denise A. Yardley, MD, of Tennessee Oncology and Sarah Cannon Research Institute in Nashville, in an interview. The findings, based on responses to a treatment decision tool, were presented in a poster at the annual meeting of the American Society of Clinical Oncology.

Study methods and results

For the new study, researchers analyzed how 547 providers – and the panel – responded to 10 case scenarios in high-risk HER2– early breast cancer between June 2022 and January 2023.

Among the providers surveyed, 72% identified as physicians, including oncologists, hematologists/oncologists, surgery oncologists, radiation oncologists, and pathologists. One percent said they were nurse practitioners or physician assistants, 7% said they were pharmacists, 1% were nurses, and the specific roles of the remaining 19% were unknown, but included medical students, according to Dr. Yardley, who is a breast cancer oncologist.

The study authors developed the free decision tool – available via the medical education company Clinical Care Options – to help oncologists navigate new treatment options for high-risk HER2– early breast cancer. The Food and Drug Administration has recently approved drugs such as abemaciclib, olaparib, and pembrolizumab for the condition.

Health care providers enter details into the tool about their patients along with their intended treatment plans. The tool then shows them recommendations for treatment from a panel of five oncologists with expertise in oncology. The members of the panel based their perspectives on the findings of the KEYNOTE-522 (pembrolizumab), OlympiA (olaparib), and monarchE (abemaciclib) trials.

The oncologists with expertise in breast cancer, who provided recommendations in March 2022, generally agreed about the best treatments, Dr. Yardley said.

The other health care providers surveyed didn’t agree with the breast cancer experts about the best treatment 58.8% of the time.

For example, one scenario describes a HR+, HER2– patient with no deleterious BRCA mutation – or unknown status – who fits the monarchE high-risk criteria. All the breast cancer experts on the panel recommended abemaciclib and endocrine therapy. But 203 providers supported a variety of strategies: endocrine therapy alone (9%), chemotherapy followed by endocrine therapy (49%), and olaparib and endocrine therapy (2%). Only 37% opted for abemaciclib and endocrine therapy, and 4% were uncertain.

Another scenario describes a patient with triple-negative breast cancer with no residual disease after neoadjuvant chemotherapy. All the experts agreed on a strategy of no adjuvant therapy plus observation. Forty percent of 25 providers agreed with this approach, but 24% were uncertain, 12% chose pembrolizumab, and 24% chose capecitabine.

In many cases, providers chose more intensive treatment options than the experts did, Dr. Yardley said.

Overtreatment in cancer is often a reflex for oncologists, she said, although “we’re learning to deescalate these treatment algorithms where there is really no benefit [to extra treatment].”

“It’s a challenge for some of these oncologists who are busy and dealing with multiple solid tumor types to keep up with the nuances of a rapidly changing field,” Dr. Yardley noted.

Many community oncologists aren’t specialists in one type of cancer and must try to keep up with treatment recommendations regarding multiple types, she continued.
 

Decision tool’s value explained

According to the study, 32% of providers changed their treatment choices in clinical practice after they learned about the expert perspectives via the decision tool; 46% said the expert opinions confirmed that their choices were best practice.

The value of the tool is its ability to help providers make better decisions about patient care, Dr. Yardley said. “There seems to be a need for this kind of support.”

In an interview, University of Pittsburgh Medical Center oncologist Adam M. Brufsky, MD, PhD – who wasn’t involved with the study – said he was surprised by the amount of disagreement between the expert and provider perspectives on treatment. However, he noted that community oncologists – unlike the breast cancer experts – often don’t see just one type of cancer.

“You just have to know so much now as an oncologist,” Dr. Brufsky said. He recommended that colleagues take advantage of decision support tools, such as cancer treatment pathways.

The study was funded by AstraZeneca, Lilly, and Merck Sharp & Dohme. Dr. Yardley has no disclosures, and disclosure information from other authors was not available. Dr. Brufsky discloses consulting support from AstraZeneca, Lilly, and Merck and grants from AstraZeneca.

Shortages of carboplatin and cisplatin have become widespread among major cancer centers, according to a survey released this week from the National Comprehensive Cancer Network.

The survey, which included responses from 27 NCCN member institutions, revealed that 93% are experiencing a shortage of carboplatin and that 70% have reported a shortage of cisplatin.

“This is an unacceptable situation,” Robert W. Carlson, MD, NCCN’s chief executive offer, said in the statement released by the network.

“We are hearing from oncologists and pharmacists across the country who have to scramble to find appropriate alternatives for treating their patients with cancer right now,” Dr. Carlson said. And while the survey results show patients are still able to get lifesaving care, “it comes at a burden to our overtaxed medical facilities.”

The NCCN called on the federal government, the pharmaceutical industry, providers, and payers to take steps to “help mitigate any impacts” from this cancer drug shortage.

“We need to work together to improve the current situation and prevent it from happening again in the future,” Dr. Carlson stressed.

Carboplatin and cisplatin, which are frequently used together for systemic treatment, are highly effective therapies prescribed to treat many cancer types, including lung, breast, and prostate cancers, as well as leukemias and lymphomas. An estimated 500,000 new patients with cancer receive these agents each year.

The current survey, conducted over the last week of May, found that 100% of responding centers are able to continue to treat patients who need cisplatin without delays.

The same cannot be said for carboplatin: only 64% of centers said they are still able to continue treating all current patients receiving the platinum-based therapy. Among 19 responding centers, 20% reported that they were continuing carboplatin regimens for some but not all patients. And 16% reported treatment delays from having to obtain prior authorization for modified treatment plans, though none reported denials.

“Carboplatin has been in short supply for months but in the last 4 weeks has reached a critical stage,” according to one survey comment. “Without additional inventory many of our sites will be out of drug by early next week.”

In response to the survey question, “Is your center experiencing a shortage of carboplatin,” others made similar comments:

• “Current shipments from established manufacturers have been paused.”
• “The supply of carboplatin available is not meeting our demands.”
• “Without additional supply in early June, we will have to implement several shortage mitigation strategies.”

Survey respondents also addressed whether manufacturers or suppliers have provided any indication of when these drugs will become readily available again. For both drugs, about 60% of respondents said no. And for those who do receive updates, many noted that the “information is tentative and variable.”

Respondents indicated that other cancer agents, including methotrexate (67%) and 5FU (26%), are also in short supply at their centers.

The shortage and the uncertainty as to when it will end are forcing some centers to develop conservation and mitigation strategies.

The NCCN has broadly outlined how the federal government, the pharmaceutical industry, providers, and payers can help with prevention and mitigation. The NCCN has called on the federal government and the pharmaceutical industry to work to secure a steady supply of core anticancer drugs and has asked payers to “put patients first and provide flexible and efficient systems of providing coverage for alternative therapies replacing anti-cancer drugs that are unavailable or in shortage.”

Overall, the survey results “demonstrate the widespread impact of the chemotherapy shortage,” said Alyssa Schatz, MSW, senior director of policy and advocacy for NCCN. “We hope that by sharing this survey and calling for united action across the oncology community, we can come together to prevent future drug shortages and ensure quality, effective, equitable, and accessible cancer care for all.”

A version of this article first appeared on Medscape.com.

Shortages of carboplatin and cisplatin have become widespread among major cancer centers, according to a survey released this week from the National Comprehensive Cancer Network.

The survey, which included responses from 27 NCCN member institutions, revealed that 93% are experiencing a shortage of carboplatin and that 70% have reported a shortage of cisplatin.

“This is an unacceptable situation,” Robert W. Carlson, MD, NCCN’s chief executive offer, said in the statement released by the network.

“We are hearing from oncologists and pharmacists across the country who have to scramble to find appropriate alternatives for treating their patients with cancer right now,” Dr. Carlson said. And while the survey results show patients are still able to get lifesaving care, “it comes at a burden to our overtaxed medical facilities.”

The NCCN called on the federal government, the pharmaceutical industry, providers, and payers to take steps to “help mitigate any impacts” from this cancer drug shortage.

“We need to work together to improve the current situation and prevent it from happening again in the future,” Dr. Carlson stressed.

Carboplatin and cisplatin, which are frequently used together for systemic treatment, are highly effective therapies prescribed to treat many cancer types, including lung, breast, and prostate cancers, as well as leukemias and lymphomas. An estimated 500,000 new patients with cancer receive these agents each year.

The current survey, conducted over the last week of May, found that 100% of responding centers are able to continue to treat patients who need cisplatin without delays.

The same cannot be said for carboplatin: only 64% of centers said they are still able to continue treating all current patients receiving the platinum-based therapy. Among 19 responding centers, 20% reported that they were continuing carboplatin regimens for some but not all patients. And 16% reported treatment delays from having to obtain prior authorization for modified treatment plans, though none reported denials.

“Carboplatin has been in short supply for months but in the last 4 weeks has reached a critical stage,” according to one survey comment. “Without additional inventory many of our sites will be out of drug by early next week.”

In response to the survey question, “Is your center experiencing a shortage of carboplatin,” others made similar comments:

• “Current shipments from established manufacturers have been paused.”
• “The supply of carboplatin available is not meeting our demands.”
• “Without additional supply in early June, we will have to implement several shortage mitigation strategies.”

Survey respondents also addressed whether manufacturers or suppliers have provided any indication of when these drugs will become readily available again. For both drugs, about 60% of respondents said no. And for those who do receive updates, many noted that the “information is tentative and variable.”

Respondents indicated that other cancer agents, including methotrexate (67%) and 5FU (26%), are also in short supply at their centers.

The shortage and the uncertainty as to when it will end are forcing some centers to develop conservation and mitigation strategies.

The NCCN has broadly outlined how the federal government, the pharmaceutical industry, providers, and payers can help with prevention and mitigation. The NCCN has called on the federal government and the pharmaceutical industry to work to secure a steady supply of core anticancer drugs and has asked payers to “put patients first and provide flexible and efficient systems of providing coverage for alternative therapies replacing anti-cancer drugs that are unavailable or in shortage.”

Overall, the survey results “demonstrate the widespread impact of the chemotherapy shortage,” said Alyssa Schatz, MSW, senior director of policy and advocacy for NCCN. “We hope that by sharing this survey and calling for united action across the oncology community, we can come together to prevent future drug shortages and ensure quality, effective, equitable, and accessible cancer care for all.”

A version of this article first appeared on Medscape.com.

Shortages of carboplatin and cisplatin have become widespread among major cancer centers, according to a survey released this week from the National Comprehensive Cancer Network.

The survey, which included responses from 27 NCCN member institutions, revealed that 93% are experiencing a shortage of carboplatin and that 70% have reported a shortage of cisplatin.

“This is an unacceptable situation,” Robert W. Carlson, MD, NCCN’s chief executive offer, said in the statement released by the network.

“We are hearing from oncologists and pharmacists across the country who have to scramble to find appropriate alternatives for treating their patients with cancer right now,” Dr. Carlson said. And while the survey results show patients are still able to get lifesaving care, “it comes at a burden to our overtaxed medical facilities.”

The NCCN called on the federal government, the pharmaceutical industry, providers, and payers to take steps to “help mitigate any impacts” from this cancer drug shortage.

“We need to work together to improve the current situation and prevent it from happening again in the future,” Dr. Carlson stressed.

Carboplatin and cisplatin, which are frequently used together for systemic treatment, are highly effective therapies prescribed to treat many cancer types, including lung, breast, and prostate cancers, as well as leukemias and lymphomas. An estimated 500,000 new patients with cancer receive these agents each year.

The current survey, conducted over the last week of May, found that 100% of responding centers are able to continue to treat patients who need cisplatin without delays.

The same cannot be said for carboplatin: only 64% of centers said they are still able to continue treating all current patients receiving the platinum-based therapy. Among 19 responding centers, 20% reported that they were continuing carboplatin regimens for some but not all patients. And 16% reported treatment delays from having to obtain prior authorization for modified treatment plans, though none reported denials.

“Carboplatin has been in short supply for months but in the last 4 weeks has reached a critical stage,” according to one survey comment. “Without additional inventory many of our sites will be out of drug by early next week.”

In response to the survey question, “Is your center experiencing a shortage of carboplatin,” others made similar comments:

• “Current shipments from established manufacturers have been paused.”
• “The supply of carboplatin available is not meeting our demands.”
• “Without additional supply in early June, we will have to implement several shortage mitigation strategies.”

Survey respondents also addressed whether manufacturers or suppliers have provided any indication of when these drugs will become readily available again. For both drugs, about 60% of respondents said no. And for those who do receive updates, many noted that the “information is tentative and variable.”

Respondents indicated that other cancer agents, including methotrexate (67%) and 5FU (26%), are also in short supply at their centers.

The shortage and the uncertainty as to when it will end are forcing some centers to develop conservation and mitigation strategies.

The NCCN has broadly outlined how the federal government, the pharmaceutical industry, providers, and payers can help with prevention and mitigation. The NCCN has called on the federal government and the pharmaceutical industry to work to secure a steady supply of core anticancer drugs and has asked payers to “put patients first and provide flexible and efficient systems of providing coverage for alternative therapies replacing anti-cancer drugs that are unavailable or in shortage.”

Overall, the survey results “demonstrate the widespread impact of the chemotherapy shortage,” said Alyssa Schatz, MSW, senior director of policy and advocacy for NCCN. “We hope that by sharing this survey and calling for united action across the oncology community, we can come together to prevent future drug shortages and ensure quality, effective, equitable, and accessible cancer care for all.”

A version of this article first appeared on Medscape.com.

CHICAGO – Patients with advanced estrogen receptor–positive, HER-negative breast cancer receiving first line treatment with CDK4/6 inhibitors (CDK4/6i) experienced no progression-free survival (PFS) or overall survival (OS) advantages over those who received the same therapy as second line treatment.

That was the conclusion of the phase 3 SONIA study, which was presented at the annual meeting of the American Society of Clinical Oncology.

The benefit from first line therapy is not maintained and almost completely disappears when patients in the control arm cross over to receive CDK4/6 inhibition in second line,” said Gabe Sonke, MD, PhD, during his presentation at the meeting.

CDK4/6 inhibitors have shown benefit in both the first-and second-line setting, according to Dr. Sonke, who is a medical oncologist at the Netherlands Cancer Institute, Amsterdam. He added that most guidelines suggest use of CDK4/6 inhibitors in the first line, but there hasn’t been a direct comparison between use in the first and second line.

“Many patients do very well on endocrine therapy alone [in the first line]. Combination treatment leads to a higher risk of the emergence of resistant patterns such as ESR1 mutations, and CDK4/6 inhibitors also come with added costs and toxicities. Given the absence of comparative data between first line and second line, we designed the SONIA trial,” said Dr. Sonke.
 

Study methods and results

The researchers recruited 1,050 pre- and postmenopausal women who were randomized to a nonsteroidal AI in the first line followed by second-line CDK4/6i plus the estrogen receptor antagonist fulvestrant, or a nonsteroidal AI plus a CDK4/6i in the first line and fulvestrant in the second line. The most commonly used CDK4/6i was palbociclib at 91%, followed by ribociclib at 8%, and abemaciclib at 1%.

After a median follow-up of 37.3 months, the median duration of CDK4/6i exposure was 24.6 months in the first-line CDK4/6i group and 8.1 months in the second-line CDK4/6i group.

The median PFS during first-line therapy was 24.7 months in the first-line CDK4/6i group and 16.1 months in the second-line CDK4/6i group (hazard ratio, 0.59; P < .0001), which was consistent with the results seen in CDK4/6i pivotal trials in the first-line setting, according to Dr. Sonke. However, PFS after two lines of therapy was not significantly different between the groups (31.0 months vs. 26.8 months, respectively; HR, 0.87; P =.10).

The safety profile was similar to what had been seen in previous trials with respect to adverse events like bone marrow and liver function abnormalities and fatigue, but there were 42% more grade 3 or higher adverse events in the first-line CDK4/6i group than in the second-line CDK4/6i group. Dr. Sonke estimated that the increase in costs related to adverse events amounted to about $200,000 per patient receiving CDK4/6i as first line.

There were no significant differences between the two groups in quality of life measurement.

Subgroup analyses of patient categories including prior adjuvant or neoadjuvant chemotherapy or endocrine therapy, de novo metastatic disease, visceral disease, bone-only disease, and treatment with palbociclib or ribociclib showed no difference in outcome for first- versus second-line CDK4/6i treatment.
 

Are CDK4/6i costs and side effects worth it?

The findings challenge the need for using CDK4/6 inhibitors as first-line treatment in this population, according to Dr. Sonke, who also raised the following related questions.

“If you were a patient, would you consider a treatment that offers no improvement in quality of life and does not improve overall survival? As a doctor or nurse, would you recommend such a treatment to your patient that nearly doubles the incidence of side effects? And if you were responsible for covering the costs of this treatment, whether as an individual or health care insurance, would you consider it worth $200,000?”

For many patients, particularly in the first line setting where resistance mechanisms are less prevalent, endocrine therapy alone remains an excellent option,” said Dr. Sonke during his presentation.

During the discussion portion of the session, Daniel Stover, MD, who is an associate professor of translational therapeutics at Ohio State University Comprehensive Cancer Center, Columbus, pointed out that the lack of differences in the subanalyses leaves little guidance for physicians.

“We really have a limited signal on who can delay CDK4/6 inhibitors. I think one of the most important outcomes of this study is the focus on the patient, as there were substantially fewer adverse events and of course we need to think about financial toxicity as well,” he said. “I think one of the things that is perhaps most exciting to think about is who are the very good risk patients who can delay CDK4/6 inhibitor [therapy]? I think for the majority of patients, endocrine therapy plus CDK4/6 inhibitor is still the appropriate treatment, but I would argue we need additional biomarkers, be it RNA-based biomarkers, novel PET imaging, or perhaps [circulating tumor] DNA dynamics.”
 

Do cost savings and reduced side effects outweigh first-line PFS benefit?

During the question-and-answer session, William Sikov, MD, spoke up from the audience in support of Dr. Sonke’s conclusions.

“Clearly there are still patients who benefit from that approach, but I think that we have reached an inflection point: I posit that the question has now changed. [We should not ask] why a certain patient should not receive a CDK4/6 inhibitor, but why a certain patient should receive a CDK4/6 inhibitor in the first-line setting,” said Dr. Sikov, who is professor of medicine at Brown University, Providence, R.I.

Dr. Sonke agreed that first-line CDK4/6i is appropriate for some patients, and later echoed the need for biomarkers, but he said that researchers have so far had little luck in identifying any.

“Of course, it’s a shared decision-making between the patient and a doctor, but I think the baseline would be for all of us to consider first line single-agent endocrine therapy,” he said.

Session comoderator Michael Danso, MD, praised the trial but questioned whether the strategy would be adopted in places like the United States, where cost savings is not a major emphasis.

“Progression-free survival is so significant in the first line setting that I can’t imagine that many oncologists in the U.S. will adopt this approach. The other thing is that this was [almost] all palbociclib, so the question remains, would having a different cyclin dependent kinase inhibitor result in the same results? I think the jury’s still out,” said Dr. Danso, who is the research director at Virginia Oncology Associates, Norfolk.

The study was funded by the Dutch government and Dutch Health Insurers. Dr. Sonke has consulted for or advised Biovica, Novartis, and Seagen. He has received research support through his institution from Agendia, AstraZeneca/Merck, Merck Sharp & Dohme, Novartis, Roche, and Seagen. Dr. Sikov has been a speaker for Lilly. Dr. Danso has received honoraria from Amgen and has consulted or advised Immunomedics, Novartis, Pfizer, and Seagen.

CHICAGO – Patients with advanced estrogen receptor–positive, HER-negative breast cancer receiving first line treatment with CDK4/6 inhibitors (CDK4/6i) experienced no progression-free survival (PFS) or overall survival (OS) advantages over those who received the same therapy as second line treatment.

That was the conclusion of the phase 3 SONIA study, which was presented at the annual meeting of the American Society of Clinical Oncology.

The benefit from first line therapy is not maintained and almost completely disappears when patients in the control arm cross over to receive CDK4/6 inhibition in second line,” said Gabe Sonke, MD, PhD, during his presentation at the meeting.

CDK4/6 inhibitors have shown benefit in both the first-and second-line setting, according to Dr. Sonke, who is a medical oncologist at the Netherlands Cancer Institute, Amsterdam. He added that most guidelines suggest use of CDK4/6 inhibitors in the first line, but there hasn’t been a direct comparison between use in the first and second line.

“Many patients do very well on endocrine therapy alone [in the first line]. Combination treatment leads to a higher risk of the emergence of resistant patterns such as ESR1 mutations, and CDK4/6 inhibitors also come with added costs and toxicities. Given the absence of comparative data between first line and second line, we designed the SONIA trial,” said Dr. Sonke.
 

Study methods and results

The researchers recruited 1,050 pre- and postmenopausal women who were randomized to a nonsteroidal AI in the first line followed by second-line CDK4/6i plus the estrogen receptor antagonist fulvestrant, or a nonsteroidal AI plus a CDK4/6i in the first line and fulvestrant in the second line. The most commonly used CDK4/6i was palbociclib at 91%, followed by ribociclib at 8%, and abemaciclib at 1%.

After a median follow-up of 37.3 months, the median duration of CDK4/6i exposure was 24.6 months in the first-line CDK4/6i group and 8.1 months in the second-line CDK4/6i group.

The median PFS during first-line therapy was 24.7 months in the first-line CDK4/6i group and 16.1 months in the second-line CDK4/6i group (hazard ratio, 0.59; P < .0001), which was consistent with the results seen in CDK4/6i pivotal trials in the first-line setting, according to Dr. Sonke. However, PFS after two lines of therapy was not significantly different between the groups (31.0 months vs. 26.8 months, respectively; HR, 0.87; P =.10).

The safety profile was similar to what had been seen in previous trials with respect to adverse events like bone marrow and liver function abnormalities and fatigue, but there were 42% more grade 3 or higher adverse events in the first-line CDK4/6i group than in the second-line CDK4/6i group. Dr. Sonke estimated that the increase in costs related to adverse events amounted to about $200,000 per patient receiving CDK4/6i as first line.

There were no significant differences between the two groups in quality of life measurement.

Subgroup analyses of patient categories including prior adjuvant or neoadjuvant chemotherapy or endocrine therapy, de novo metastatic disease, visceral disease, bone-only disease, and treatment with palbociclib or ribociclib showed no difference in outcome for first- versus second-line CDK4/6i treatment.
 

Are CDK4/6i costs and side effects worth it?

The findings challenge the need for using CDK4/6 inhibitors as first-line treatment in this population, according to Dr. Sonke, who also raised the following related questions.

“If you were a patient, would you consider a treatment that offers no improvement in quality of life and does not improve overall survival? As a doctor or nurse, would you recommend such a treatment to your patient that nearly doubles the incidence of side effects? And if you were responsible for covering the costs of this treatment, whether as an individual or health care insurance, would you consider it worth $200,000?”

For many patients, particularly in the first line setting where resistance mechanisms are less prevalent, endocrine therapy alone remains an excellent option,” said Dr. Sonke during his presentation.

During the discussion portion of the session, Daniel Stover, MD, who is an associate professor of translational therapeutics at Ohio State University Comprehensive Cancer Center, Columbus, pointed out that the lack of differences in the subanalyses leaves little guidance for physicians.

“We really have a limited signal on who can delay CDK4/6 inhibitors. I think one of the most important outcomes of this study is the focus on the patient, as there were substantially fewer adverse events and of course we need to think about financial toxicity as well,” he said. “I think one of the things that is perhaps most exciting to think about is who are the very good risk patients who can delay CDK4/6 inhibitor [therapy]? I think for the majority of patients, endocrine therapy plus CDK4/6 inhibitor is still the appropriate treatment, but I would argue we need additional biomarkers, be it RNA-based biomarkers, novel PET imaging, or perhaps [circulating tumor] DNA dynamics.”
 

Do cost savings and reduced side effects outweigh first-line PFS benefit?

During the question-and-answer session, William Sikov, MD, spoke up from the audience in support of Dr. Sonke’s conclusions.

“Clearly there are still patients who benefit from that approach, but I think that we have reached an inflection point: I posit that the question has now changed. [We should not ask] why a certain patient should not receive a CDK4/6 inhibitor, but why a certain patient should receive a CDK4/6 inhibitor in the first-line setting,” said Dr. Sikov, who is professor of medicine at Brown University, Providence, R.I.

Dr. Sonke agreed that first-line CDK4/6i is appropriate for some patients, and later echoed the need for biomarkers, but he said that researchers have so far had little luck in identifying any.

“Of course, it’s a shared decision-making between the patient and a doctor, but I think the baseline would be for all of us to consider first line single-agent endocrine therapy,” he said.

Session comoderator Michael Danso, MD, praised the trial but questioned whether the strategy would be adopted in places like the United States, where cost savings is not a major emphasis.

“Progression-free survival is so significant in the first line setting that I can’t imagine that many oncologists in the U.S. will adopt this approach. The other thing is that this was [almost] all palbociclib, so the question remains, would having a different cyclin dependent kinase inhibitor result in the same results? I think the jury’s still out,” said Dr. Danso, who is the research director at Virginia Oncology Associates, Norfolk.

The study was funded by the Dutch government and Dutch Health Insurers. Dr. Sonke has consulted for or advised Biovica, Novartis, and Seagen. He has received research support through his institution from Agendia, AstraZeneca/Merck, Merck Sharp & Dohme, Novartis, Roche, and Seagen. Dr. Sikov has been a speaker for Lilly. Dr. Danso has received honoraria from Amgen and has consulted or advised Immunomedics, Novartis, Pfizer, and Seagen.

CHICAGO – Patients with advanced estrogen receptor–positive, HER-negative breast cancer receiving first line treatment with CDK4/6 inhibitors (CDK4/6i) experienced no progression-free survival (PFS) or overall survival (OS) advantages over those who received the same therapy as second line treatment.

That was the conclusion of the phase 3 SONIA study, which was presented at the annual meeting of the American Society of Clinical Oncology.

The benefit from first line therapy is not maintained and almost completely disappears when patients in the control arm cross over to receive CDK4/6 inhibition in second line,” said Gabe Sonke, MD, PhD, during his presentation at the meeting.

CDK4/6 inhibitors have shown benefit in both the first-and second-line setting, according to Dr. Sonke, who is a medical oncologist at the Netherlands Cancer Institute, Amsterdam. He added that most guidelines suggest use of CDK4/6 inhibitors in the first line, but there hasn’t been a direct comparison between use in the first and second line.

“Many patients do very well on endocrine therapy alone [in the first line]. Combination treatment leads to a higher risk of the emergence of resistant patterns such as ESR1 mutations, and CDK4/6 inhibitors also come with added costs and toxicities. Given the absence of comparative data between first line and second line, we designed the SONIA trial,” said Dr. Sonke.
 

Study methods and results

The researchers recruited 1,050 pre- and postmenopausal women who were randomized to a nonsteroidal AI in the first line followed by second-line CDK4/6i plus the estrogen receptor antagonist fulvestrant, or a nonsteroidal AI plus a CDK4/6i in the first line and fulvestrant in the second line. The most commonly used CDK4/6i was palbociclib at 91%, followed by ribociclib at 8%, and abemaciclib at 1%.

After a median follow-up of 37.3 months, the median duration of CDK4/6i exposure was 24.6 months in the first-line CDK4/6i group and 8.1 months in the second-line CDK4/6i group.

The median PFS during first-line therapy was 24.7 months in the first-line CDK4/6i group and 16.1 months in the second-line CDK4/6i group (hazard ratio, 0.59; P < .0001), which was consistent with the results seen in CDK4/6i pivotal trials in the first-line setting, according to Dr. Sonke. However, PFS after two lines of therapy was not significantly different between the groups (31.0 months vs. 26.8 months, respectively; HR, 0.87; P =.10).

The safety profile was similar to what had been seen in previous trials with respect to adverse events like bone marrow and liver function abnormalities and fatigue, but there were 42% more grade 3 or higher adverse events in the first-line CDK4/6i group than in the second-line CDK4/6i group. Dr. Sonke estimated that the increase in costs related to adverse events amounted to about $200,000 per patient receiving CDK4/6i as first line.

There were no significant differences between the two groups in quality of life measurement.

Subgroup analyses of patient categories including prior adjuvant or neoadjuvant chemotherapy or endocrine therapy, de novo metastatic disease, visceral disease, bone-only disease, and treatment with palbociclib or ribociclib showed no difference in outcome for first- versus second-line CDK4/6i treatment.
 

Are CDK4/6i costs and side effects worth it?

The findings challenge the need for using CDK4/6 inhibitors as first-line treatment in this population, according to Dr. Sonke, who also raised the following related questions.

“If you were a patient, would you consider a treatment that offers no improvement in quality of life and does not improve overall survival? As a doctor or nurse, would you recommend such a treatment to your patient that nearly doubles the incidence of side effects? And if you were responsible for covering the costs of this treatment, whether as an individual or health care insurance, would you consider it worth $200,000?”

For many patients, particularly in the first line setting where resistance mechanisms are less prevalent, endocrine therapy alone remains an excellent option,” said Dr. Sonke during his presentation.

During the discussion portion of the session, Daniel Stover, MD, who is an associate professor of translational therapeutics at Ohio State University Comprehensive Cancer Center, Columbus, pointed out that the lack of differences in the subanalyses leaves little guidance for physicians.

“We really have a limited signal on who can delay CDK4/6 inhibitors. I think one of the most important outcomes of this study is the focus on the patient, as there were substantially fewer adverse events and of course we need to think about financial toxicity as well,” he said. “I think one of the things that is perhaps most exciting to think about is who are the very good risk patients who can delay CDK4/6 inhibitor [therapy]? I think for the majority of patients, endocrine therapy plus CDK4/6 inhibitor is still the appropriate treatment, but I would argue we need additional biomarkers, be it RNA-based biomarkers, novel PET imaging, or perhaps [circulating tumor] DNA dynamics.”
 

Do cost savings and reduced side effects outweigh first-line PFS benefit?

During the question-and-answer session, William Sikov, MD, spoke up from the audience in support of Dr. Sonke’s conclusions.

“Clearly there are still patients who benefit from that approach, but I think that we have reached an inflection point: I posit that the question has now changed. [We should not ask] why a certain patient should not receive a CDK4/6 inhibitor, but why a certain patient should receive a CDK4/6 inhibitor in the first-line setting,” said Dr. Sikov, who is professor of medicine at Brown University, Providence, R.I.

Dr. Sonke agreed that first-line CDK4/6i is appropriate for some patients, and later echoed the need for biomarkers, but he said that researchers have so far had little luck in identifying any.

“Of course, it’s a shared decision-making between the patient and a doctor, but I think the baseline would be for all of us to consider first line single-agent endocrine therapy,” he said.

Session comoderator Michael Danso, MD, praised the trial but questioned whether the strategy would be adopted in places like the United States, where cost savings is not a major emphasis.

“Progression-free survival is so significant in the first line setting that I can’t imagine that many oncologists in the U.S. will adopt this approach. The other thing is that this was [almost] all palbociclib, so the question remains, would having a different cyclin dependent kinase inhibitor result in the same results? I think the jury’s still out,” said Dr. Danso, who is the research director at Virginia Oncology Associates, Norfolk.

The study was funded by the Dutch government and Dutch Health Insurers. Dr. Sonke has consulted for or advised Biovica, Novartis, and Seagen. He has received research support through his institution from Agendia, AstraZeneca/Merck, Merck Sharp & Dohme, Novartis, Roche, and Seagen. Dr. Sikov has been a speaker for Lilly. Dr. Danso has received honoraria from Amgen and has consulted or advised Immunomedics, Novartis, Pfizer, and Seagen.

The combination of ribociclib (Kisqali) and endocrine therapy has already been shown to yield a significant survival advantage for women with metastatic, hormone receptor–positive, HER2-negative (HR+/HER2–) breast cancer. Now the same combination has also shown benefit in early-stage HR+/HER2– breast tumors.

The new results come from an interim analysis of the phase 3, randomized NATALEE trial, which is comparing maintenance therapy with the (CDK4/6 inhibitor ribociclib plus endocrine therapy with an aromatase inhibitor to endocrine therapy alone.

At a median follow-up of 27.7 months, the 3-year invasive disease–free survival (IDFS) rate was 90.4% for patients who received the combination, compared with 87.1% for patients who received endocrine therapy alone.

This difference translates into a 25% relative reduction in risk for recurrence with the addition of ribociclib, said principal investigator Dennis J. Slamon, MD, PhD, from the UCLA Jonsson Comprehensive Cancer Center, Los Angeles.

“The NATALEE results, in summary, do support this as a new treatment of choice available to physicians and patients for this broad population of patients with stage II or stage III hormone receptor–positive, HER2-negative disease in early breast cancer,” he said.

Dr. Slamon was speaking at a media briefing held prior to the annual meeting of the American Society of Clinical Oncology, where the results were presented
 

‘Early but impressive’

“Today, Dr. Slamon has shown us early but impressive data demonstrating a significant reduction in the risk of recurrence as defined by an improvement of invasive disease–free survival for patients with high-risk, node-positive and node-negative hormone receptor–positive, HER2-negative early breast cancer,” commented ASCO expert Rita Nanda, MD, director of the breast oncology program at the University of Chicago.

“We know that a substantial proportion of patients with early-stage hormone receptor–positive breast [cancer] can go on to recur,” Dr. Nanda continued. “These recurrences can be quite delayed, and for our patients with node-negative disease, to this point, we haven’t seen any improvements with the addition of a CDK4/6 inhibitor to endocrine therapy for early-stage breast cancer. Dr Slamon has also shown us that ribociclib in the context of the NATALEE trial is effective, it was well tolerated, and I do expect that these trial results will change practice.”

In a comment, Sylvia Adams, MD, a medical oncologist who specializes in breast cancer at the NYU Langone Perlmutter Cancer Center, New York, said she is comfortable with using a CDK4/6 inhibitor such as ribociclib or abemaciclib (Verzenio) in the adjuvant setting for patients with early, localized breast cancer.

She noted, however, that to date the absolute benefit of the combination over endocrine therapy alone has been modest, at 3.3%, but that the difference may be important to many patients who feel that they need to do everything they can to prevent disease recurrence.

“I’m really looking forward to the quality of life data, because it’s certainly known that any of these CDK4/6 inhibitors may add a bit of fatigue, and while there were no unexpected safety signals [in NATALEE], we know that there are some GI [gastrointestinal] effects with this therapy, as well as joint pain,” she said. “Joint pain is a little tricky, because the patients are also getting aromatase inhibitors, which can cause joint pain.”

In addition, premenopausal women in the study also received goserelin, an ovarian suppressor that triggers menopause, which is also associated with arthralgias, Dr. Adams said.

Dr. Adams and Dr. Nanda both noted that the addition of ribociclib to endocrine therapy increases the treatment burden for patients because it requires a commitment of at least 3 years and more frequent monitoring, especially in the first few months of therapy, compared with endocrine therapy alone.
 

Study details

The combination of ribociclib and standard of care endocrine therapy was the first to show an improvement in overall survival among women with metastatic HR+/HER2– breast cancer.

To see whether the combination could also benefit patients with early breast cancer, the investigators conducted NATALEE. They enrolled premenopausal and postmenopausal women and also men with HR+/HER2– breast cancer. Cases ranged from stage IIA (with either no nodal involvement with additional risk factors or with one to three involved axillary lymph nodes) to stage IIB-III disease, based on American Joint Committee on Cancer staging.

Patients who had previously received neoadjuvant or adjuvant endocrine therapy were accepted into the trial if the therapy had been started within 1 year of randomization.

The patients were stratified by age, menopausal status, disease stage, prior chemotherapy status, and geographic region. They were randomly assigned to receive either ribociclib 400 mg per day for 3 weeks, then were given 1 week off each cycle for 3 years plus endocrine therapy with either letrozole 2.5 mg/day or anastrozole 1 mg/day for at least 5 years, or to endocrine therapy alone. Men and premenopausal women also received goserelin.

Dr. Slamon noted that the 400-mg dose of ribociclib is lower than the recommended starting dose of 600 mg for metastatic disease. They chose the lower dose to allow longer duration of therapy, with a goal of achieving optimal disease suppression by driving tumor cells into irreversible senescence with less side effects.

A total of 2,549 patients were randomly assigned to receive the combination; 2,552 patients received endocrine therapy alone.

At the data cutoff on Jan. 11, 2023, after the prespecified minimum number of IDFS events had occurred, 189 patients in the ribociclib arm experienced recurrence, compared with 237 patients in the endocrine therapy–only arm.

As noted, 3-year IDFS rates were 90.4% with ribociclib and 87.1% with endocrine therapy alone, which translates to a hazard ratio of 0.748 in favor of the combination (P = .0014).

The benefit of ribociclib was generally consistent across subgroups, including node-negative patients, but there were too few patients in this subgroup for the differences to reach statistical significance, Dr. Slamon said.
 

Safety

The most commonly reported adverse event in the endocrine therapy–alone arm were joint pain and hot flashes

The most common adverse events with ribociclib included neutropenia and joint pain. Rates of gastrointestinal adverse events and fatigue, typical of CDK4/6 inhibitors, were relatively low in this study.

Dr. Slamon compared the rates of neutropenia with ribociclib in this trial to those in pooled data from the MONALEESA series of trials, in which ribociclib was delivered at a 600-mg dose. Grade 3 or 4 neutropenia occurred in 44% of patients in NATALEE, compared with 60% of patients in the MONALEESA trials.

In the ribociclib arm, 5.2% of patients experienced prolongation of the QT interval, compared with 1.2% of patients in the endocrine therapy–alone arm. No cases of torsades des pointes or problematic rhythm disturbances were observed, Dr. Slamon said.

“As frequently happens when we have these lovely, large, phase 3 registration trials but with some restriction in eligibility, when you get out to real-world practice, we don’t know what will happen in women who are on antiarrhythmics and if they’ll have a higher incidence of the QT elongation; they just weren’t included in the study. So it sounds like we’ll have to be paying attention to that,” commented briefing moderator Julie R. Gralow, MD, FACP, FASCO, chief medical officer and executive vice president of ASCO.

The study was funded by Novartis. Dr. Slamon has a leadership position with 1200 Pharma, Biomarin, and Torl Biotherapeutics, a consulting/advisory role for Novartis, and has received honoraria, research funding, and travel expenses from Novartis and others. Multiple coauthors reported financial relationships with Novartis and others. Dr. Nanda has had consulting/advisory roles with and has received institutional research funding from several companies, not including Novartis. Dr. Adams has participated on an advisory board for Cogent Biosciences and her institution has received research funding from various companies.

A version of this article first appeared on Medscape.com.

The combination of ribociclib (Kisqali) and endocrine therapy has already been shown to yield a significant survival advantage for women with metastatic, hormone receptor–positive, HER2-negative (HR+/HER2–) breast cancer. Now the same combination has also shown benefit in early-stage HR+/HER2– breast tumors.

The new results come from an interim analysis of the phase 3, randomized NATALEE trial, which is comparing maintenance therapy with the (CDK4/6 inhibitor ribociclib plus endocrine therapy with an aromatase inhibitor to endocrine therapy alone.

At a median follow-up of 27.7 months, the 3-year invasive disease–free survival (IDFS) rate was 90.4% for patients who received the combination, compared with 87.1% for patients who received endocrine therapy alone.

This difference translates into a 25% relative reduction in risk for recurrence with the addition of ribociclib, said principal investigator Dennis J. Slamon, MD, PhD, from the UCLA Jonsson Comprehensive Cancer Center, Los Angeles.

“The NATALEE results, in summary, do support this as a new treatment of choice available to physicians and patients for this broad population of patients with stage II or stage III hormone receptor–positive, HER2-negative disease in early breast cancer,” he said.

Dr. Slamon was speaking at a media briefing held prior to the annual meeting of the American Society of Clinical Oncology, where the results were presented
 

‘Early but impressive’

“Today, Dr. Slamon has shown us early but impressive data demonstrating a significant reduction in the risk of recurrence as defined by an improvement of invasive disease–free survival for patients with high-risk, node-positive and node-negative hormone receptor–positive, HER2-negative early breast cancer,” commented ASCO expert Rita Nanda, MD, director of the breast oncology program at the University of Chicago.

“We know that a substantial proportion of patients with early-stage hormone receptor–positive breast [cancer] can go on to recur,” Dr. Nanda continued. “These recurrences can be quite delayed, and for our patients with node-negative disease, to this point, we haven’t seen any improvements with the addition of a CDK4/6 inhibitor to endocrine therapy for early-stage breast cancer. Dr Slamon has also shown us that ribociclib in the context of the NATALEE trial is effective, it was well tolerated, and I do expect that these trial results will change practice.”

In a comment, Sylvia Adams, MD, a medical oncologist who specializes in breast cancer at the NYU Langone Perlmutter Cancer Center, New York, said she is comfortable with using a CDK4/6 inhibitor such as ribociclib or abemaciclib (Verzenio) in the adjuvant setting for patients with early, localized breast cancer.

She noted, however, that to date the absolute benefit of the combination over endocrine therapy alone has been modest, at 3.3%, but that the difference may be important to many patients who feel that they need to do everything they can to prevent disease recurrence.

“I’m really looking forward to the quality of life data, because it’s certainly known that any of these CDK4/6 inhibitors may add a bit of fatigue, and while there were no unexpected safety signals [in NATALEE], we know that there are some GI [gastrointestinal] effects with this therapy, as well as joint pain,” she said. “Joint pain is a little tricky, because the patients are also getting aromatase inhibitors, which can cause joint pain.”

In addition, premenopausal women in the study also received goserelin, an ovarian suppressor that triggers menopause, which is also associated with arthralgias, Dr. Adams said.

Dr. Adams and Dr. Nanda both noted that the addition of ribociclib to endocrine therapy increases the treatment burden for patients because it requires a commitment of at least 3 years and more frequent monitoring, especially in the first few months of therapy, compared with endocrine therapy alone.
 

Study details

The combination of ribociclib and standard of care endocrine therapy was the first to show an improvement in overall survival among women with metastatic HR+/HER2– breast cancer.

To see whether the combination could also benefit patients with early breast cancer, the investigators conducted NATALEE. They enrolled premenopausal and postmenopausal women and also men with HR+/HER2– breast cancer. Cases ranged from stage IIA (with either no nodal involvement with additional risk factors or with one to three involved axillary lymph nodes) to stage IIB-III disease, based on American Joint Committee on Cancer staging.

Patients who had previously received neoadjuvant or adjuvant endocrine therapy were accepted into the trial if the therapy had been started within 1 year of randomization.

The patients were stratified by age, menopausal status, disease stage, prior chemotherapy status, and geographic region. They were randomly assigned to receive either ribociclib 400 mg per day for 3 weeks, then were given 1 week off each cycle for 3 years plus endocrine therapy with either letrozole 2.5 mg/day or anastrozole 1 mg/day for at least 5 years, or to endocrine therapy alone. Men and premenopausal women also received goserelin.

Dr. Slamon noted that the 400-mg dose of ribociclib is lower than the recommended starting dose of 600 mg for metastatic disease. They chose the lower dose to allow longer duration of therapy, with a goal of achieving optimal disease suppression by driving tumor cells into irreversible senescence with less side effects.

A total of 2,549 patients were randomly assigned to receive the combination; 2,552 patients received endocrine therapy alone.

At the data cutoff on Jan. 11, 2023, after the prespecified minimum number of IDFS events had occurred, 189 patients in the ribociclib arm experienced recurrence, compared with 237 patients in the endocrine therapy–only arm.

As noted, 3-year IDFS rates were 90.4% with ribociclib and 87.1% with endocrine therapy alone, which translates to a hazard ratio of 0.748 in favor of the combination (P = .0014).

The benefit of ribociclib was generally consistent across subgroups, including node-negative patients, but there were too few patients in this subgroup for the differences to reach statistical significance, Dr. Slamon said.
 

Safety

The most commonly reported adverse event in the endocrine therapy–alone arm were joint pain and hot flashes

The most common adverse events with ribociclib included neutropenia and joint pain. Rates of gastrointestinal adverse events and fatigue, typical of CDK4/6 inhibitors, were relatively low in this study.

Dr. Slamon compared the rates of neutropenia with ribociclib in this trial to those in pooled data from the MONALEESA series of trials, in which ribociclib was delivered at a 600-mg dose. Grade 3 or 4 neutropenia occurred in 44% of patients in NATALEE, compared with 60% of patients in the MONALEESA trials.

In the ribociclib arm, 5.2% of patients experienced prolongation of the QT interval, compared with 1.2% of patients in the endocrine therapy–alone arm. No cases of torsades des pointes or problematic rhythm disturbances were observed, Dr. Slamon said.

“As frequently happens when we have these lovely, large, phase 3 registration trials but with some restriction in eligibility, when you get out to real-world practice, we don’t know what will happen in women who are on antiarrhythmics and if they’ll have a higher incidence of the QT elongation; they just weren’t included in the study. So it sounds like we’ll have to be paying attention to that,” commented briefing moderator Julie R. Gralow, MD, FACP, FASCO, chief medical officer and executive vice president of ASCO.

The study was funded by Novartis. Dr. Slamon has a leadership position with 1200 Pharma, Biomarin, and Torl Biotherapeutics, a consulting/advisory role for Novartis, and has received honoraria, research funding, and travel expenses from Novartis and others. Multiple coauthors reported financial relationships with Novartis and others. Dr. Nanda has had consulting/advisory roles with and has received institutional research funding from several companies, not including Novartis. Dr. Adams has participated on an advisory board for Cogent Biosciences and her institution has received research funding from various companies.

A version of this article first appeared on Medscape.com.

The combination of ribociclib (Kisqali) and endocrine therapy has already been shown to yield a significant survival advantage for women with metastatic, hormone receptor–positive, HER2-negative (HR+/HER2–) breast cancer. Now the same combination has also shown benefit in early-stage HR+/HER2– breast tumors.

The new results come from an interim analysis of the phase 3, randomized NATALEE trial, which is comparing maintenance therapy with the (CDK4/6 inhibitor ribociclib plus endocrine therapy with an aromatase inhibitor to endocrine therapy alone.

At a median follow-up of 27.7 months, the 3-year invasive disease–free survival (IDFS) rate was 90.4% for patients who received the combination, compared with 87.1% for patients who received endocrine therapy alone.

This difference translates into a 25% relative reduction in risk for recurrence with the addition of ribociclib, said principal investigator Dennis J. Slamon, MD, PhD, from the UCLA Jonsson Comprehensive Cancer Center, Los Angeles.

“The NATALEE results, in summary, do support this as a new treatment of choice available to physicians and patients for this broad population of patients with stage II or stage III hormone receptor–positive, HER2-negative disease in early breast cancer,” he said.

Dr. Slamon was speaking at a media briefing held prior to the annual meeting of the American Society of Clinical Oncology, where the results were presented
 

‘Early but impressive’

“Today, Dr. Slamon has shown us early but impressive data demonstrating a significant reduction in the risk of recurrence as defined by an improvement of invasive disease–free survival for patients with high-risk, node-positive and node-negative hormone receptor–positive, HER2-negative early breast cancer,” commented ASCO expert Rita Nanda, MD, director of the breast oncology program at the University of Chicago.

“We know that a substantial proportion of patients with early-stage hormone receptor–positive breast [cancer] can go on to recur,” Dr. Nanda continued. “These recurrences can be quite delayed, and for our patients with node-negative disease, to this point, we haven’t seen any improvements with the addition of a CDK4/6 inhibitor to endocrine therapy for early-stage breast cancer. Dr Slamon has also shown us that ribociclib in the context of the NATALEE trial is effective, it was well tolerated, and I do expect that these trial results will change practice.”

In a comment, Sylvia Adams, MD, a medical oncologist who specializes in breast cancer at the NYU Langone Perlmutter Cancer Center, New York, said she is comfortable with using a CDK4/6 inhibitor such as ribociclib or abemaciclib (Verzenio) in the adjuvant setting for patients with early, localized breast cancer.

She noted, however, that to date the absolute benefit of the combination over endocrine therapy alone has been modest, at 3.3%, but that the difference may be important to many patients who feel that they need to do everything they can to prevent disease recurrence.

“I’m really looking forward to the quality of life data, because it’s certainly known that any of these CDK4/6 inhibitors may add a bit of fatigue, and while there were no unexpected safety signals [in NATALEE], we know that there are some GI [gastrointestinal] effects with this therapy, as well as joint pain,” she said. “Joint pain is a little tricky, because the patients are also getting aromatase inhibitors, which can cause joint pain.”

In addition, premenopausal women in the study also received goserelin, an ovarian suppressor that triggers menopause, which is also associated with arthralgias, Dr. Adams said.

Dr. Adams and Dr. Nanda both noted that the addition of ribociclib to endocrine therapy increases the treatment burden for patients because it requires a commitment of at least 3 years and more frequent monitoring, especially in the first few months of therapy, compared with endocrine therapy alone.
 

Study details

The combination of ribociclib and standard of care endocrine therapy was the first to show an improvement in overall survival among women with metastatic HR+/HER2– breast cancer.

To see whether the combination could also benefit patients with early breast cancer, the investigators conducted NATALEE. They enrolled premenopausal and postmenopausal women and also men with HR+/HER2– breast cancer. Cases ranged from stage IIA (with either no nodal involvement with additional risk factors or with one to three involved axillary lymph nodes) to stage IIB-III disease, based on American Joint Committee on Cancer staging.

Patients who had previously received neoadjuvant or adjuvant endocrine therapy were accepted into the trial if the therapy had been started within 1 year of randomization.

The patients were stratified by age, menopausal status, disease stage, prior chemotherapy status, and geographic region. They were randomly assigned to receive either ribociclib 400 mg per day for 3 weeks, then were given 1 week off each cycle for 3 years plus endocrine therapy with either letrozole 2.5 mg/day or anastrozole 1 mg/day for at least 5 years, or to endocrine therapy alone. Men and premenopausal women also received goserelin.

Dr. Slamon noted that the 400-mg dose of ribociclib is lower than the recommended starting dose of 600 mg for metastatic disease. They chose the lower dose to allow longer duration of therapy, with a goal of achieving optimal disease suppression by driving tumor cells into irreversible senescence with less side effects.

A total of 2,549 patients were randomly assigned to receive the combination; 2,552 patients received endocrine therapy alone.

At the data cutoff on Jan. 11, 2023, after the prespecified minimum number of IDFS events had occurred, 189 patients in the ribociclib arm experienced recurrence, compared with 237 patients in the endocrine therapy–only arm.

As noted, 3-year IDFS rates were 90.4% with ribociclib and 87.1% with endocrine therapy alone, which translates to a hazard ratio of 0.748 in favor of the combination (P = .0014).

The benefit of ribociclib was generally consistent across subgroups, including node-negative patients, but there were too few patients in this subgroup for the differences to reach statistical significance, Dr. Slamon said.
 

Safety

The most commonly reported adverse event in the endocrine therapy–alone arm were joint pain and hot flashes

The most common adverse events with ribociclib included neutropenia and joint pain. Rates of gastrointestinal adverse events and fatigue, typical of CDK4/6 inhibitors, were relatively low in this study.

Dr. Slamon compared the rates of neutropenia with ribociclib in this trial to those in pooled data from the MONALEESA series of trials, in which ribociclib was delivered at a 600-mg dose. Grade 3 or 4 neutropenia occurred in 44% of patients in NATALEE, compared with 60% of patients in the MONALEESA trials.

In the ribociclib arm, 5.2% of patients experienced prolongation of the QT interval, compared with 1.2% of patients in the endocrine therapy–alone arm. No cases of torsades des pointes or problematic rhythm disturbances were observed, Dr. Slamon said.

“As frequently happens when we have these lovely, large, phase 3 registration trials but with some restriction in eligibility, when you get out to real-world practice, we don’t know what will happen in women who are on antiarrhythmics and if they’ll have a higher incidence of the QT elongation; they just weren’t included in the study. So it sounds like we’ll have to be paying attention to that,” commented briefing moderator Julie R. Gralow, MD, FACP, FASCO, chief medical officer and executive vice president of ASCO.

The study was funded by Novartis. Dr. Slamon has a leadership position with 1200 Pharma, Biomarin, and Torl Biotherapeutics, a consulting/advisory role for Novartis, and has received honoraria, research funding, and travel expenses from Novartis and others. Multiple coauthors reported financial relationships with Novartis and others. Dr. Nanda has had consulting/advisory roles with and has received institutional research funding from several companies, not including Novartis. Dr. Adams has participated on an advisory board for Cogent Biosciences and her institution has received research funding from various companies.

A version of this article first appeared on Medscape.com.

A telephone-based weight loss intervention resulted in clinically meaningful weight loss in patients with breast cancer who were overweight and obese.

The finding comes from a case-control study of 3,136 women who had been diagnosed with stage II or III breast cancer. The average body mass index of participants was 34.5 kg/m², and mean age was 53.4 years.

After 6 months, patients who received telephone coaching as well as health education lost 4.4 kg (9.7 lb), which was 4.8% of their baseline body weight.

In contrast, patients in the control group, who received only health education, gained 0.2 kg (0.3% of their baseline body weight) over the same period.

At the 1-year mark, the telephone weight loss intervention group had maintained the weight they lost at 6 months, whereas the control group gained even more weight and ended with a 0.9% weight gain.

“This equated to a 5.56% weight differential in the two arms demonstrating significant weight loss, which was also clinically significant given that a 3% weight loss is sufficient to improve diabetes and other chronic diseases,” commented lead author Jennifer Ligibel, MD, associate professor of medicine at the Dana-Farber Cancer Institute in Boston. 

She spoke at a press briefing ahead of the annual meeting of the American Society of Clinical Oncology, where the study was presented.

“Our study provides compelling evidence that weight loss interventions can successfully reduce weight in a diverse population of patients with breast cancer,” she said in a statement. At the time of diagnosis, 57% of patients were postmenopausal, 80.3% were White, 12.8% were Black, and 7.3% were Hispanic. 

Patients in the intervention group received a health education program plus a 2-year telephone-based weight loss program that focused on lowering calorie intake and increasing physical activity.

Those in the control group only received the health education program that included nontailored diet and exercise materials, a quarterly newsletter, twice-yearly webinars, and a subscription to a health magazine of the participant’s choosing

“This study was delivered completely remotely and it was done so purposefully because we wanted to develop a program that could work for somebody who lived in a rural area in the middle of the country, as well as it could for somebody who lived close to a cancer center,” Dr. Ligibel commented.

“The next step will be to determine whether this weight loss translates into lower rates of cancer recurrence and mortality. If our trial is successful in improving cancer outcomes, it will have far-reaching implications, demonstrating that weight loss should be incorporated into the standard of care for survivors of breast cancer,” she added.

Commenting on the new findings, ASCO expert Elizabeth Anne Comen, MD, Memorial Sloan Kettering Cancer Center, New York, said: “This study demonstrates that consistent health coaching by telephone – a more accessible, cost-effective approach compared to in-person programs – can significantly help patients with breast cancer lose weight over 1 year and is effective across diverse groups of patients.

“We anxiously await longer-term follow-up to see whether this weight reduction will ultimately improve outcomes for these patients,” she added.

A version of this article first appeared on Medscape.com.

A telephone-based weight loss intervention resulted in clinically meaningful weight loss in patients with breast cancer who were overweight and obese.

The finding comes from a case-control study of 3,136 women who had been diagnosed with stage II or III breast cancer. The average body mass index of participants was 34.5 kg/m², and mean age was 53.4 years.

After 6 months, patients who received telephone coaching as well as health education lost 4.4 kg (9.7 lb), which was 4.8% of their baseline body weight.

In contrast, patients in the control group, who received only health education, gained 0.2 kg (0.3% of their baseline body weight) over the same period.

At the 1-year mark, the telephone weight loss intervention group had maintained the weight they lost at 6 months, whereas the control group gained even more weight and ended with a 0.9% weight gain.

“This equated to a 5.56% weight differential in the two arms demonstrating significant weight loss, which was also clinically significant given that a 3% weight loss is sufficient to improve diabetes and other chronic diseases,” commented lead author Jennifer Ligibel, MD, associate professor of medicine at the Dana-Farber Cancer Institute in Boston. 

She spoke at a press briefing ahead of the annual meeting of the American Society of Clinical Oncology, where the study was presented.

“Our study provides compelling evidence that weight loss interventions can successfully reduce weight in a diverse population of patients with breast cancer,” she said in a statement. At the time of diagnosis, 57% of patients were postmenopausal, 80.3% were White, 12.8% were Black, and 7.3% were Hispanic. 

Patients in the intervention group received a health education program plus a 2-year telephone-based weight loss program that focused on lowering calorie intake and increasing physical activity.

Those in the control group only received the health education program that included nontailored diet and exercise materials, a quarterly newsletter, twice-yearly webinars, and a subscription to a health magazine of the participant’s choosing

“This study was delivered completely remotely and it was done so purposefully because we wanted to develop a program that could work for somebody who lived in a rural area in the middle of the country, as well as it could for somebody who lived close to a cancer center,” Dr. Ligibel commented.

“The next step will be to determine whether this weight loss translates into lower rates of cancer recurrence and mortality. If our trial is successful in improving cancer outcomes, it will have far-reaching implications, demonstrating that weight loss should be incorporated into the standard of care for survivors of breast cancer,” she added.

Commenting on the new findings, ASCO expert Elizabeth Anne Comen, MD, Memorial Sloan Kettering Cancer Center, New York, said: “This study demonstrates that consistent health coaching by telephone – a more accessible, cost-effective approach compared to in-person programs – can significantly help patients with breast cancer lose weight over 1 year and is effective across diverse groups of patients.

“We anxiously await longer-term follow-up to see whether this weight reduction will ultimately improve outcomes for these patients,” she added.

A version of this article first appeared on Medscape.com.

A telephone-based weight loss intervention resulted in clinically meaningful weight loss in patients with breast cancer who were overweight and obese.

The finding comes from a case-control study of 3,136 women who had been diagnosed with stage II or III breast cancer. The average body mass index of participants was 34.5 kg/m², and mean age was 53.4 years.

After 6 months, patients who received telephone coaching as well as health education lost 4.4 kg (9.7 lb), which was 4.8% of their baseline body weight.

In contrast, patients in the control group, who received only health education, gained 0.2 kg (0.3% of their baseline body weight) over the same period.

At the 1-year mark, the telephone weight loss intervention group had maintained the weight they lost at 6 months, whereas the control group gained even more weight and ended with a 0.9% weight gain.

“This equated to a 5.56% weight differential in the two arms demonstrating significant weight loss, which was also clinically significant given that a 3% weight loss is sufficient to improve diabetes and other chronic diseases,” commented lead author Jennifer Ligibel, MD, associate professor of medicine at the Dana-Farber Cancer Institute in Boston. 

She spoke at a press briefing ahead of the annual meeting of the American Society of Clinical Oncology, where the study was presented.

“Our study provides compelling evidence that weight loss interventions can successfully reduce weight in a diverse population of patients with breast cancer,” she said in a statement. At the time of diagnosis, 57% of patients were postmenopausal, 80.3% were White, 12.8% were Black, and 7.3% were Hispanic. 

Patients in the intervention group received a health education program plus a 2-year telephone-based weight loss program that focused on lowering calorie intake and increasing physical activity.

Those in the control group only received the health education program that included nontailored diet and exercise materials, a quarterly newsletter, twice-yearly webinars, and a subscription to a health magazine of the participant’s choosing

“This study was delivered completely remotely and it was done so purposefully because we wanted to develop a program that could work for somebody who lived in a rural area in the middle of the country, as well as it could for somebody who lived close to a cancer center,” Dr. Ligibel commented.

“The next step will be to determine whether this weight loss translates into lower rates of cancer recurrence and mortality. If our trial is successful in improving cancer outcomes, it will have far-reaching implications, demonstrating that weight loss should be incorporated into the standard of care for survivors of breast cancer,” she added.

Commenting on the new findings, ASCO expert Elizabeth Anne Comen, MD, Memorial Sloan Kettering Cancer Center, New York, said: “This study demonstrates that consistent health coaching by telephone – a more accessible, cost-effective approach compared to in-person programs – can significantly help patients with breast cancer lose weight over 1 year and is effective across diverse groups of patients.

“We anxiously await longer-term follow-up to see whether this weight reduction will ultimately improve outcomes for these patients,” she added.

A version of this article first appeared on Medscape.com.