Late toxicities with PARP inhibitor plus RT in inflammatory breast cancer

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Using the PARP inhibitor veliparib as a radiosensitizer for chest wall radiation in women with inflammatory or locally recurrent breast cancer was associated with a high rate of late grade 3 adverse events, results of a phase 1 study show.

Although the trial’s upper limit of dose-limiting toxicities during 6 weeks of treatment and 4 weeks of follow-up was not met, 46.7% of 30 patients treated with veliparib and radiation after complete surgical resection had at least one grade 3 adverse event by 3 years of follow-up, reported Reshma Jagsi, MD, of the University of Michigan, Ann Arbor.

“In this multicenter phase 1 trial, severe acute toxicity did not exceed the prespecified target of 30%, even at the highest tested dose of veliparib (200 mg twice a day), and we observed no grade 4 or 5 events. However, given observations of grade 3 late toxicity in nearly one-half of all patients evaluated at 3 years, we recommend a phase 2 dose of 50 mg twice a day if veliparib is investigated further for radiosensitization in patients with breast cancer at high risk of locoregional recurrence and in need of treatment intensification,” they wrote in the Journal of Clinical Oncology.

In preclinical studies, PARP (poly [ADP-ribose] polymerase) inhibitors have been shown to enhance radiosensitivty of breast malignancies when given concurrently with radiation.

In a phase 1 dosing and safety study, 30 women with inflammatory or locally recurrent breast cancer of the chest wall underwent complete surgical resection and were then assigned to radiation consisting of 50 Gy to the chest wall and regional lymph nodes, plus a 10 Gy boost. The patients also received oral veliparib at a dose of either 50, 100, 150, or 200 mg taken twice daily during the 6-week course of radiotherapy.

During the 6 weeks of therapy and 4 weeks of follow-up, there were five dose-limiting toxicities, including two cases each of confluent moist desquamation greater than 100 cm2 in the 100- and 150-mg dose groups, and one case of neutropenia in a patient at the 200-mg dose level.

The respective rates of any grade 3 toxicity, treatment related or otherwise, at 1, 2, and 3 years of follow-up were 10%, 16.7%, and 46.7%.

 

 


The investigators noted that, at year 3, severe fibrosis in the treatment field was seen in 6 of the 15 surviving patients. Of the six patients, two also had grade 3 skin induration, and two had grade 3 lymphedema.

“Although some of the late adverse events we observed might have occurred even in the absence of the investigational agent and with standard therapy, severe late toxicity is relatively uncommon with standard therapy alone, so we believe that a cautious approach is prudent,” Dr. Jagsi and associates wrote.

The study was supported by the Translational Breast Cancer Research Consortium, Breast Cancer Research Foundation, University of Michigan Comprehensive Cancer Center, and Michigan Institute for Clinical and Health Research. Dr. Jagsi reported institutional research support from AbbVie, which donated the veliparib used in the study.

SOURCE: Jagsi R et al. J Clin Oncol. 2018 Mar 20. doi: 10.1200/JCO.2017.77.2665

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Using the PARP inhibitor veliparib as a radiosensitizer for chest wall radiation in women with inflammatory or locally recurrent breast cancer was associated with a high rate of late grade 3 adverse events, results of a phase 1 study show.

Although the trial’s upper limit of dose-limiting toxicities during 6 weeks of treatment and 4 weeks of follow-up was not met, 46.7% of 30 patients treated with veliparib and radiation after complete surgical resection had at least one grade 3 adverse event by 3 years of follow-up, reported Reshma Jagsi, MD, of the University of Michigan, Ann Arbor.

“In this multicenter phase 1 trial, severe acute toxicity did not exceed the prespecified target of 30%, even at the highest tested dose of veliparib (200 mg twice a day), and we observed no grade 4 or 5 events. However, given observations of grade 3 late toxicity in nearly one-half of all patients evaluated at 3 years, we recommend a phase 2 dose of 50 mg twice a day if veliparib is investigated further for radiosensitization in patients with breast cancer at high risk of locoregional recurrence and in need of treatment intensification,” they wrote in the Journal of Clinical Oncology.

In preclinical studies, PARP (poly [ADP-ribose] polymerase) inhibitors have been shown to enhance radiosensitivty of breast malignancies when given concurrently with radiation.

In a phase 1 dosing and safety study, 30 women with inflammatory or locally recurrent breast cancer of the chest wall underwent complete surgical resection and were then assigned to radiation consisting of 50 Gy to the chest wall and regional lymph nodes, plus a 10 Gy boost. The patients also received oral veliparib at a dose of either 50, 100, 150, or 200 mg taken twice daily during the 6-week course of radiotherapy.

During the 6 weeks of therapy and 4 weeks of follow-up, there were five dose-limiting toxicities, including two cases each of confluent moist desquamation greater than 100 cm2 in the 100- and 150-mg dose groups, and one case of neutropenia in a patient at the 200-mg dose level.

The respective rates of any grade 3 toxicity, treatment related or otherwise, at 1, 2, and 3 years of follow-up were 10%, 16.7%, and 46.7%.

 

 


The investigators noted that, at year 3, severe fibrosis in the treatment field was seen in 6 of the 15 surviving patients. Of the six patients, two also had grade 3 skin induration, and two had grade 3 lymphedema.

“Although some of the late adverse events we observed might have occurred even in the absence of the investigational agent and with standard therapy, severe late toxicity is relatively uncommon with standard therapy alone, so we believe that a cautious approach is prudent,” Dr. Jagsi and associates wrote.

The study was supported by the Translational Breast Cancer Research Consortium, Breast Cancer Research Foundation, University of Michigan Comprehensive Cancer Center, and Michigan Institute for Clinical and Health Research. Dr. Jagsi reported institutional research support from AbbVie, which donated the veliparib used in the study.

SOURCE: Jagsi R et al. J Clin Oncol. 2018 Mar 20. doi: 10.1200/JCO.2017.77.2665

 

Using the PARP inhibitor veliparib as a radiosensitizer for chest wall radiation in women with inflammatory or locally recurrent breast cancer was associated with a high rate of late grade 3 adverse events, results of a phase 1 study show.

Although the trial’s upper limit of dose-limiting toxicities during 6 weeks of treatment and 4 weeks of follow-up was not met, 46.7% of 30 patients treated with veliparib and radiation after complete surgical resection had at least one grade 3 adverse event by 3 years of follow-up, reported Reshma Jagsi, MD, of the University of Michigan, Ann Arbor.

“In this multicenter phase 1 trial, severe acute toxicity did not exceed the prespecified target of 30%, even at the highest tested dose of veliparib (200 mg twice a day), and we observed no grade 4 or 5 events. However, given observations of grade 3 late toxicity in nearly one-half of all patients evaluated at 3 years, we recommend a phase 2 dose of 50 mg twice a day if veliparib is investigated further for radiosensitization in patients with breast cancer at high risk of locoregional recurrence and in need of treatment intensification,” they wrote in the Journal of Clinical Oncology.

In preclinical studies, PARP (poly [ADP-ribose] polymerase) inhibitors have been shown to enhance radiosensitivty of breast malignancies when given concurrently with radiation.

In a phase 1 dosing and safety study, 30 women with inflammatory or locally recurrent breast cancer of the chest wall underwent complete surgical resection and were then assigned to radiation consisting of 50 Gy to the chest wall and regional lymph nodes, plus a 10 Gy boost. The patients also received oral veliparib at a dose of either 50, 100, 150, or 200 mg taken twice daily during the 6-week course of radiotherapy.

During the 6 weeks of therapy and 4 weeks of follow-up, there were five dose-limiting toxicities, including two cases each of confluent moist desquamation greater than 100 cm2 in the 100- and 150-mg dose groups, and one case of neutropenia in a patient at the 200-mg dose level.

The respective rates of any grade 3 toxicity, treatment related or otherwise, at 1, 2, and 3 years of follow-up were 10%, 16.7%, and 46.7%.

 

 


The investigators noted that, at year 3, severe fibrosis in the treatment field was seen in 6 of the 15 surviving patients. Of the six patients, two also had grade 3 skin induration, and two had grade 3 lymphedema.

“Although some of the late adverse events we observed might have occurred even in the absence of the investigational agent and with standard therapy, severe late toxicity is relatively uncommon with standard therapy alone, so we believe that a cautious approach is prudent,” Dr. Jagsi and associates wrote.

The study was supported by the Translational Breast Cancer Research Consortium, Breast Cancer Research Foundation, University of Michigan Comprehensive Cancer Center, and Michigan Institute for Clinical and Health Research. Dr. Jagsi reported institutional research support from AbbVie, which donated the veliparib used in the study.

SOURCE: Jagsi R et al. J Clin Oncol. 2018 Mar 20. doi: 10.1200/JCO.2017.77.2665

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Key clinical point: PARP inhibitors have a radiosensitizing effect when used in treatment of inflammatory breast cancer but are associated with late grade 3 adverse events.

Major finding: At 3 years, 46.7% of patients had a grade 3 adverse event of any kind.

Study details: Phase 1 dose-finding and safety study in 30 women treated with radiation and veliparib after complete surgical resection of inflammatory or recurrent breast cancer of the chest wall and regional lymph nodes.

Disclosures: The study was supported by the Translational Breast Cancer Research Consortium, Breast Cancer Research Foundation, University of Michigan Comprehensive Cancer Center, and Michigan Institute for Clinical and Health Research. Dr. Jagsi reported institutional research support from AbbVie, which donated the veliparib used in the study.

Source: Jagsi R et al. J Clin Oncol. 2018 Mar 20. doi: 10.1200/JCO.2017.77.2665.

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Accelerated breast irradiation advocated by ASTRO guideline

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Hypofractionation is the preferred means of giving whole breast irradiation to women with invasive breast cancer, according to updated guidance from the American Society for Radiation Oncology.

A dose of 4,000 cGy given in 15 fractions or 4,250 cGy in 16 fractions is recommended, with or without inclusion of the low axilla, and regardless of a variety of factors such as tumor grade, prior chemotherapy, and patient age.

“Previously, accelerated treatment was recommended only for certain patients, including older patients and those with less advanced disease,” Benjamin Smith, MD, one of the cochairs of the guideline task force, said in an ASTRO news release.

Dr. Smith, of the University of Texas MD Anderson Cancer Center, Houston, added that recent long-term ­data from several large trials “strongly support the safety and efficacy of accelerated treatment for most breast cancer patients.”

Treatment decisions and plans still need to be individualized, but the updated ASTRO guidance notes that whole breast irradiation (WBI) can be offered to most women with invasive breast cancer independent of breast size and whether or not the cancer is in the left or right breast, provided that homogeneous dosing can be achieved. Hormone receptor, HER2 status, and postsurgical margin status also appear not to matter.

Historically, conventional fractionation (CF) with or without a tumor bed boost was used for WBI, Dr. Smith and associates wrote in the guidelines, which were published online in Practical Radiation Oncology. This consisted of daily doses of 180-200 cGy for a total dose of 4,500-5,000 cGy.

“Recognizing the limitations of CF for convenience and cost, randomized trials in the 1990s and 2000s investigated if moderate hypofractionation [HF], defined as daily doses of 265-330 cGy, could yield oncologic and functional/cosmetic outcomes similar to CF-WBI,” they said.

 

 


Initial results of these trials “supported the safety and effectiveness of HF-WBI” and were then used to form ASTRO’s 2011 guideline on dose fractionation for WBI. With longer term data from these trials now available, it was time to review the evidence again. A systematic literature review was thus conducted to identify all relevant studies published during 2009-2016, and 100 articles met the task force criteria and were used to create the updated guideline.

Aside from the delivery and dosing of WBI, other key recommendations look at the use of a radiation boost to the tumor bed, and preferred techniques for treatment planning.

With regards to a radiation boost, this needs to be considered on an individual basis but can be independent of any previous WBI. A radiation boost is recommended if patients have any grade invasive cancer and are aged 50 years or younger, have a high-grade tumor and are aged 51-70 years, or if there is a positive margin following surgery. A radiation boost also is recommended in women with ductal carcinoma in situ if they are aged 50 years or younger, have a high-grade tumor, and positive or close postsurgical margins.

As for treatment planning, 3-dimensional conformal treatment planning with a “field-in-field” technique is recommended as the initial approach. This is to minimize the volume of breast tissue that receives more than 105% of the radiation dose. The guideline also covers optimal patient positioning and how to avoid nearby tissues and organs, such as the heart, lungs and contralateral breast.

 

 

SOURCE: Smith BD et al. Pract Radiat Oncol. 2018 March 12. doi: 10.1016/j.prro.2018.01.012.

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Hypofractionation is the preferred means of giving whole breast irradiation to women with invasive breast cancer, according to updated guidance from the American Society for Radiation Oncology.

A dose of 4,000 cGy given in 15 fractions or 4,250 cGy in 16 fractions is recommended, with or without inclusion of the low axilla, and regardless of a variety of factors such as tumor grade, prior chemotherapy, and patient age.

“Previously, accelerated treatment was recommended only for certain patients, including older patients and those with less advanced disease,” Benjamin Smith, MD, one of the cochairs of the guideline task force, said in an ASTRO news release.

Dr. Smith, of the University of Texas MD Anderson Cancer Center, Houston, added that recent long-term ­data from several large trials “strongly support the safety and efficacy of accelerated treatment for most breast cancer patients.”

Treatment decisions and plans still need to be individualized, but the updated ASTRO guidance notes that whole breast irradiation (WBI) can be offered to most women with invasive breast cancer independent of breast size and whether or not the cancer is in the left or right breast, provided that homogeneous dosing can be achieved. Hormone receptor, HER2 status, and postsurgical margin status also appear not to matter.

Historically, conventional fractionation (CF) with or without a tumor bed boost was used for WBI, Dr. Smith and associates wrote in the guidelines, which were published online in Practical Radiation Oncology. This consisted of daily doses of 180-200 cGy for a total dose of 4,500-5,000 cGy.

“Recognizing the limitations of CF for convenience and cost, randomized trials in the 1990s and 2000s investigated if moderate hypofractionation [HF], defined as daily doses of 265-330 cGy, could yield oncologic and functional/cosmetic outcomes similar to CF-WBI,” they said.

 

 


Initial results of these trials “supported the safety and effectiveness of HF-WBI” and were then used to form ASTRO’s 2011 guideline on dose fractionation for WBI. With longer term data from these trials now available, it was time to review the evidence again. A systematic literature review was thus conducted to identify all relevant studies published during 2009-2016, and 100 articles met the task force criteria and were used to create the updated guideline.

Aside from the delivery and dosing of WBI, other key recommendations look at the use of a radiation boost to the tumor bed, and preferred techniques for treatment planning.

With regards to a radiation boost, this needs to be considered on an individual basis but can be independent of any previous WBI. A radiation boost is recommended if patients have any grade invasive cancer and are aged 50 years or younger, have a high-grade tumor and are aged 51-70 years, or if there is a positive margin following surgery. A radiation boost also is recommended in women with ductal carcinoma in situ if they are aged 50 years or younger, have a high-grade tumor, and positive or close postsurgical margins.

As for treatment planning, 3-dimensional conformal treatment planning with a “field-in-field” technique is recommended as the initial approach. This is to minimize the volume of breast tissue that receives more than 105% of the radiation dose. The guideline also covers optimal patient positioning and how to avoid nearby tissues and organs, such as the heart, lungs and contralateral breast.

 

 

SOURCE: Smith BD et al. Pract Radiat Oncol. 2018 March 12. doi: 10.1016/j.prro.2018.01.012.

 

Hypofractionation is the preferred means of giving whole breast irradiation to women with invasive breast cancer, according to updated guidance from the American Society for Radiation Oncology.

A dose of 4,000 cGy given in 15 fractions or 4,250 cGy in 16 fractions is recommended, with or without inclusion of the low axilla, and regardless of a variety of factors such as tumor grade, prior chemotherapy, and patient age.

“Previously, accelerated treatment was recommended only for certain patients, including older patients and those with less advanced disease,” Benjamin Smith, MD, one of the cochairs of the guideline task force, said in an ASTRO news release.

Dr. Smith, of the University of Texas MD Anderson Cancer Center, Houston, added that recent long-term ­data from several large trials “strongly support the safety and efficacy of accelerated treatment for most breast cancer patients.”

Treatment decisions and plans still need to be individualized, but the updated ASTRO guidance notes that whole breast irradiation (WBI) can be offered to most women with invasive breast cancer independent of breast size and whether or not the cancer is in the left or right breast, provided that homogeneous dosing can be achieved. Hormone receptor, HER2 status, and postsurgical margin status also appear not to matter.

Historically, conventional fractionation (CF) with or without a tumor bed boost was used for WBI, Dr. Smith and associates wrote in the guidelines, which were published online in Practical Radiation Oncology. This consisted of daily doses of 180-200 cGy for a total dose of 4,500-5,000 cGy.

“Recognizing the limitations of CF for convenience and cost, randomized trials in the 1990s and 2000s investigated if moderate hypofractionation [HF], defined as daily doses of 265-330 cGy, could yield oncologic and functional/cosmetic outcomes similar to CF-WBI,” they said.

 

 


Initial results of these trials “supported the safety and effectiveness of HF-WBI” and were then used to form ASTRO’s 2011 guideline on dose fractionation for WBI. With longer term data from these trials now available, it was time to review the evidence again. A systematic literature review was thus conducted to identify all relevant studies published during 2009-2016, and 100 articles met the task force criteria and were used to create the updated guideline.

Aside from the delivery and dosing of WBI, other key recommendations look at the use of a radiation boost to the tumor bed, and preferred techniques for treatment planning.

With regards to a radiation boost, this needs to be considered on an individual basis but can be independent of any previous WBI. A radiation boost is recommended if patients have any grade invasive cancer and are aged 50 years or younger, have a high-grade tumor and are aged 51-70 years, or if there is a positive margin following surgery. A radiation boost also is recommended in women with ductal carcinoma in situ if they are aged 50 years or younger, have a high-grade tumor, and positive or close postsurgical margins.

As for treatment planning, 3-dimensional conformal treatment planning with a “field-in-field” technique is recommended as the initial approach. This is to minimize the volume of breast tissue that receives more than 105% of the radiation dose. The guideline also covers optimal patient positioning and how to avoid nearby tissues and organs, such as the heart, lungs and contralateral breast.

 

 

SOURCE: Smith BD et al. Pract Radiat Oncol. 2018 March 12. doi: 10.1016/j.prro.2018.01.012.

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Key clinical point: For invasive cancer, the preferred scheme is hypofractionated whole breast irradiation (HF-WBI).

Major finding: HF-WBI should be given to a total dose of 4,000 cGy in 15 fractions or 4,250 cGy in 16 fractions.

Study details: A systematic literature review of all relevant studies published during 2009-2016.

Disclosures: The guidelines were sponsored by the American Society for Radiation Oncology.

Source: Smith BD et al. Pract Radiat Oncol. 2018 March 12. doi: 10.1016/j.prro.2018.01.012.

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Fulvestrant plus neratinib reversed treatment-acquired HER2 mutations in metastatic ER+ breast cancer

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Dual therapy with fulvestrant and the irreversible HER2 kinase inhibitor neratinib reversed treatment-acquired hormone resistance in metastatic estrogen receptor (ER)–positive breast cancer cells.

Elaine Mardis, PhD, a spokesperson for the American Association of Cancer Research, hailed the research by Utthara Nayar, PhD, and colleagues as “groundbreaking and unexpected” during a briefing held in advance of the annual meeting of the American Association for Cancer Research. The lab experiments were part of a whole-exome sequencing study of metastatic ER-positive tumor biopsies from 168 patients, 12 of whom had acquired the HER2 mutations, said Dr. Nayar of the Dana-Farber Cancer Institute, Boston.

The findings have prompted a phase 2 trial of the combination, which is now recruiting patients, Dr. Nayar said. The 5-year study seeks 152 women with inoperable locally advanced or metastatic ER-positive breast cancer with a confirmed HER2-positive mutation. Patients will be randomized to the combination of neratinib and fulvestrant or to neratinib alone. The primary outcome is progression-free survival.

“We also hope to be able to develop upfront combinations to preempt the resistance and lead to more durable responses,” Dr. Nayar said.

 

 


All of the 168 patients who contributed metastatic tumor biopsy samples to the study had developed resistance to estrogen receptor treatments, including aromatase inhibitors, tamoxifen, and fulvestrant. Of these biopsies, 12 had HER2 mutations, 8 of which had been previously characterized as activating.

Dr. Nayar and colleagues examined the untreated primary tumors in five of these patients; there was no mutation in four, suggesting that the mutations were a response to treatment. “In these 80%, the mutations were acquired as tumors were exposed to treatment and not present in the original tumor,” Dr. Nayar said.

These acquired HER2 mutations were mutually exclusive with ER mutations, which suggested a different mechanism of resistance to ER-directed therapies, she noted in her abstract. The mutations conferred resistance to tamoxifen, fulvestrant, and palbociclib.

However, the combination of fulvestrant and neratinib, an irreversible HER2 kinase inhibitor, overcame resistance in these cells.
 

 


In addition to pioneering a potentially important therapy for treatment-resistant metastatic breast cancer, the study highlights the importance of gene sequencing metastatic tumors, said Nikhil Wagle, MD, Dr. Nayar’s colleague and deputy director of the Center for Cancer Precision Medicine at Dana-Farber.

“Our study highlights how important it is to profile resistant metastatic tumors since these tumors may harbor targetable mechanisms of resistance that were not present in the original tumor biopsy,” Dr. Wagle noted in a press statement. “Repeated sequencing of tumors can pinpoint new genetic changes that cause resistance to therapies. This in turn can enable physicians to personalize therapy depending on the specific genetic changes in a patient’s tumor over time.”

The study was supported by the Department of Defense, the National Cancer Institute, the Susan G. Komen Foundation, the Dana-Farber Cancer Center, and a number of other private funders. Dr. Wagle is a stockholder in Foundation Medicine. Dr. Nayar had no financial disclosure.

SOURCE: Nayer U et al. AACR 2018, Abstract 4952

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Dual therapy with fulvestrant and the irreversible HER2 kinase inhibitor neratinib reversed treatment-acquired hormone resistance in metastatic estrogen receptor (ER)–positive breast cancer cells.

Elaine Mardis, PhD, a spokesperson for the American Association of Cancer Research, hailed the research by Utthara Nayar, PhD, and colleagues as “groundbreaking and unexpected” during a briefing held in advance of the annual meeting of the American Association for Cancer Research. The lab experiments were part of a whole-exome sequencing study of metastatic ER-positive tumor biopsies from 168 patients, 12 of whom had acquired the HER2 mutations, said Dr. Nayar of the Dana-Farber Cancer Institute, Boston.

The findings have prompted a phase 2 trial of the combination, which is now recruiting patients, Dr. Nayar said. The 5-year study seeks 152 women with inoperable locally advanced or metastatic ER-positive breast cancer with a confirmed HER2-positive mutation. Patients will be randomized to the combination of neratinib and fulvestrant or to neratinib alone. The primary outcome is progression-free survival.

“We also hope to be able to develop upfront combinations to preempt the resistance and lead to more durable responses,” Dr. Nayar said.

 

 


All of the 168 patients who contributed metastatic tumor biopsy samples to the study had developed resistance to estrogen receptor treatments, including aromatase inhibitors, tamoxifen, and fulvestrant. Of these biopsies, 12 had HER2 mutations, 8 of which had been previously characterized as activating.

Dr. Nayar and colleagues examined the untreated primary tumors in five of these patients; there was no mutation in four, suggesting that the mutations were a response to treatment. “In these 80%, the mutations were acquired as tumors were exposed to treatment and not present in the original tumor,” Dr. Nayar said.

These acquired HER2 mutations were mutually exclusive with ER mutations, which suggested a different mechanism of resistance to ER-directed therapies, she noted in her abstract. The mutations conferred resistance to tamoxifen, fulvestrant, and palbociclib.

However, the combination of fulvestrant and neratinib, an irreversible HER2 kinase inhibitor, overcame resistance in these cells.
 

 


In addition to pioneering a potentially important therapy for treatment-resistant metastatic breast cancer, the study highlights the importance of gene sequencing metastatic tumors, said Nikhil Wagle, MD, Dr. Nayar’s colleague and deputy director of the Center for Cancer Precision Medicine at Dana-Farber.

“Our study highlights how important it is to profile resistant metastatic tumors since these tumors may harbor targetable mechanisms of resistance that were not present in the original tumor biopsy,” Dr. Wagle noted in a press statement. “Repeated sequencing of tumors can pinpoint new genetic changes that cause resistance to therapies. This in turn can enable physicians to personalize therapy depending on the specific genetic changes in a patient’s tumor over time.”

The study was supported by the Department of Defense, the National Cancer Institute, the Susan G. Komen Foundation, the Dana-Farber Cancer Center, and a number of other private funders. Dr. Wagle is a stockholder in Foundation Medicine. Dr. Nayar had no financial disclosure.

SOURCE: Nayer U et al. AACR 2018, Abstract 4952

 

Dual therapy with fulvestrant and the irreversible HER2 kinase inhibitor neratinib reversed treatment-acquired hormone resistance in metastatic estrogen receptor (ER)–positive breast cancer cells.

Elaine Mardis, PhD, a spokesperson for the American Association of Cancer Research, hailed the research by Utthara Nayar, PhD, and colleagues as “groundbreaking and unexpected” during a briefing held in advance of the annual meeting of the American Association for Cancer Research. The lab experiments were part of a whole-exome sequencing study of metastatic ER-positive tumor biopsies from 168 patients, 12 of whom had acquired the HER2 mutations, said Dr. Nayar of the Dana-Farber Cancer Institute, Boston.

The findings have prompted a phase 2 trial of the combination, which is now recruiting patients, Dr. Nayar said. The 5-year study seeks 152 women with inoperable locally advanced or metastatic ER-positive breast cancer with a confirmed HER2-positive mutation. Patients will be randomized to the combination of neratinib and fulvestrant or to neratinib alone. The primary outcome is progression-free survival.

“We also hope to be able to develop upfront combinations to preempt the resistance and lead to more durable responses,” Dr. Nayar said.

 

 


All of the 168 patients who contributed metastatic tumor biopsy samples to the study had developed resistance to estrogen receptor treatments, including aromatase inhibitors, tamoxifen, and fulvestrant. Of these biopsies, 12 had HER2 mutations, 8 of which had been previously characterized as activating.

Dr. Nayar and colleagues examined the untreated primary tumors in five of these patients; there was no mutation in four, suggesting that the mutations were a response to treatment. “In these 80%, the mutations were acquired as tumors were exposed to treatment and not present in the original tumor,” Dr. Nayar said.

These acquired HER2 mutations were mutually exclusive with ER mutations, which suggested a different mechanism of resistance to ER-directed therapies, she noted in her abstract. The mutations conferred resistance to tamoxifen, fulvestrant, and palbociclib.

However, the combination of fulvestrant and neratinib, an irreversible HER2 kinase inhibitor, overcame resistance in these cells.
 

 


In addition to pioneering a potentially important therapy for treatment-resistant metastatic breast cancer, the study highlights the importance of gene sequencing metastatic tumors, said Nikhil Wagle, MD, Dr. Nayar’s colleague and deputy director of the Center for Cancer Precision Medicine at Dana-Farber.

“Our study highlights how important it is to profile resistant metastatic tumors since these tumors may harbor targetable mechanisms of resistance that were not present in the original tumor biopsy,” Dr. Wagle noted in a press statement. “Repeated sequencing of tumors can pinpoint new genetic changes that cause resistance to therapies. This in turn can enable physicians to personalize therapy depending on the specific genetic changes in a patient’s tumor over time.”

The study was supported by the Department of Defense, the National Cancer Institute, the Susan G. Komen Foundation, the Dana-Farber Cancer Center, and a number of other private funders. Dr. Wagle is a stockholder in Foundation Medicine. Dr. Nayar had no financial disclosure.

SOURCE: Nayer U et al. AACR 2018, Abstract 4952

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Key clinical point: The combination of fulvestrant and neratinib reversed acquired HER2 mutations in ER+ metastatic breast cancer cells.

Major finding: Of 168 biopsies, 12 had acquired HER2 mutations after hormone treatment; these mutations were reversed with the dual therapy.

Study details: The exome sequencing study comprised 168 biopsies, and the in vitro study comprised 12.

Disclosures: The study was supported by the Department of Defense, the National Cancer Institute, the Susan G. Komen Foundation, the Dana-Farber Cancer Institute, and other private funders. Dr. Wagle is a stockholder in Foundation Medicine. Dr. Nayar had no financial disclosure.

Source: Nayar U et al. AACR 2018, Abstract 4952

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Possible increased breast cancer risk found in women with schizophrenia

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A meta-analysis has found an increased risk of breast cancer in women with schizophrenia, but its authors noted significant diversity of results across the included studies.

In the meta-analysis, Chuanjun Zhuo, MD, PhD, and Patrick Todd Triplett, MD, presented the results of 12 cohort studies involving 125,760 women that showed the risk of breast cancer in women with schizophrenia, compared with the general population.

They found that women with schizophrenia had a 31% higher standardized incidence ratio of breast cancer (95% confidence interval, 1.14-1.50; P less than .001). However, significant heterogeneity was found between studies, with the prediction interval ranging from 0.81 to 2.10. The report was published in JAMA Psychiatry.

“Accordingly, it is possible that a future study will show a decreased breast cancer risk in women with schizophrenia compared with the general population,” said Dr. Zhuo of Tianjin Medical University, China, and Dr. Triplett, of Johns Hopkins University, Baltimore.

 

 


As it turns out, one of the subgroup analyses showed that the association between schizophrenia and breast cancer was significant only in studies that excluded women who were diagnosed with breast cancer before they were diagnosed with schizophrenia (standardized incidence ratio, 1.34; 95% CI, 1.20-1.51; P less than .001).

The same was seen in studies where there were more than 100 cases of breast cancer (SIR, 1.31; 95% CI, 1.18-1.46; P less than .001), while the association was not significant in studies with fewer than 100 cases.

The authors said their findings contradict a hypothesis that schizophrenia might be protective against cancer.

“These results, together with our recent meta-analysis results showing no association with lung cancer risk but a reduced hepatic cancer risk in schizophrenia, indicated that the association between schizophrenia and cancer risk may be complicated and depend on the cancer site,” wrote Dr. Zhuo and Dr. Triplett.
 

 


In terms of possible mechanisms underlying the increased risk of breast cancer seen in this study, the authors suggested that people with schizophrenia could experience other clinical conditions such as obesity that might increase their risk of breast cancer.

“As breast cancer may be a hormone-dependent cancer, a significant positive association between plasma prolactin levels and the risk of breast cancer has been observed; in addition, increased prolactin levels have been documented in women with schizophrenia, particularly for those receiving certain antipsychotics,” they wrote.

While the incidence of cancer in people with schizophrenia might not necessarily differ from that of the general population, the authors said studies have found that people with schizophrenia have higher cancer mortality. Because “breast cancer prevention and treatment options are less optimal in women with schizophrenia, our results highlight that women with schizophrenia deserve focused care for breast cancer screening and treatment,” they wrote.

The Tianjin Health Bureau Foundation and the Natural Science Foundation of Tianjin, China, supported the study. No conflicts of interest were declared.

SOURCE: Zhuo C et al. JAMA Psychiatry. 2018 Mar 7. doi: 10.1001/jamapsychiatry.2017.4748.

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A meta-analysis has found an increased risk of breast cancer in women with schizophrenia, but its authors noted significant diversity of results across the included studies.

In the meta-analysis, Chuanjun Zhuo, MD, PhD, and Patrick Todd Triplett, MD, presented the results of 12 cohort studies involving 125,760 women that showed the risk of breast cancer in women with schizophrenia, compared with the general population.

They found that women with schizophrenia had a 31% higher standardized incidence ratio of breast cancer (95% confidence interval, 1.14-1.50; P less than .001). However, significant heterogeneity was found between studies, with the prediction interval ranging from 0.81 to 2.10. The report was published in JAMA Psychiatry.

“Accordingly, it is possible that a future study will show a decreased breast cancer risk in women with schizophrenia compared with the general population,” said Dr. Zhuo of Tianjin Medical University, China, and Dr. Triplett, of Johns Hopkins University, Baltimore.

 

 


As it turns out, one of the subgroup analyses showed that the association between schizophrenia and breast cancer was significant only in studies that excluded women who were diagnosed with breast cancer before they were diagnosed with schizophrenia (standardized incidence ratio, 1.34; 95% CI, 1.20-1.51; P less than .001).

The same was seen in studies where there were more than 100 cases of breast cancer (SIR, 1.31; 95% CI, 1.18-1.46; P less than .001), while the association was not significant in studies with fewer than 100 cases.

The authors said their findings contradict a hypothesis that schizophrenia might be protective against cancer.

“These results, together with our recent meta-analysis results showing no association with lung cancer risk but a reduced hepatic cancer risk in schizophrenia, indicated that the association between schizophrenia and cancer risk may be complicated and depend on the cancer site,” wrote Dr. Zhuo and Dr. Triplett.
 

 


In terms of possible mechanisms underlying the increased risk of breast cancer seen in this study, the authors suggested that people with schizophrenia could experience other clinical conditions such as obesity that might increase their risk of breast cancer.

“As breast cancer may be a hormone-dependent cancer, a significant positive association between plasma prolactin levels and the risk of breast cancer has been observed; in addition, increased prolactin levels have been documented in women with schizophrenia, particularly for those receiving certain antipsychotics,” they wrote.

While the incidence of cancer in people with schizophrenia might not necessarily differ from that of the general population, the authors said studies have found that people with schizophrenia have higher cancer mortality. Because “breast cancer prevention and treatment options are less optimal in women with schizophrenia, our results highlight that women with schizophrenia deserve focused care for breast cancer screening and treatment,” they wrote.

The Tianjin Health Bureau Foundation and the Natural Science Foundation of Tianjin, China, supported the study. No conflicts of interest were declared.

SOURCE: Zhuo C et al. JAMA Psychiatry. 2018 Mar 7. doi: 10.1001/jamapsychiatry.2017.4748.

 

A meta-analysis has found an increased risk of breast cancer in women with schizophrenia, but its authors noted significant diversity of results across the included studies.

In the meta-analysis, Chuanjun Zhuo, MD, PhD, and Patrick Todd Triplett, MD, presented the results of 12 cohort studies involving 125,760 women that showed the risk of breast cancer in women with schizophrenia, compared with the general population.

They found that women with schizophrenia had a 31% higher standardized incidence ratio of breast cancer (95% confidence interval, 1.14-1.50; P less than .001). However, significant heterogeneity was found between studies, with the prediction interval ranging from 0.81 to 2.10. The report was published in JAMA Psychiatry.

“Accordingly, it is possible that a future study will show a decreased breast cancer risk in women with schizophrenia compared with the general population,” said Dr. Zhuo of Tianjin Medical University, China, and Dr. Triplett, of Johns Hopkins University, Baltimore.

 

 


As it turns out, one of the subgroup analyses showed that the association between schizophrenia and breast cancer was significant only in studies that excluded women who were diagnosed with breast cancer before they were diagnosed with schizophrenia (standardized incidence ratio, 1.34; 95% CI, 1.20-1.51; P less than .001).

The same was seen in studies where there were more than 100 cases of breast cancer (SIR, 1.31; 95% CI, 1.18-1.46; P less than .001), while the association was not significant in studies with fewer than 100 cases.

The authors said their findings contradict a hypothesis that schizophrenia might be protective against cancer.

“These results, together with our recent meta-analysis results showing no association with lung cancer risk but a reduced hepatic cancer risk in schizophrenia, indicated that the association between schizophrenia and cancer risk may be complicated and depend on the cancer site,” wrote Dr. Zhuo and Dr. Triplett.
 

 


In terms of possible mechanisms underlying the increased risk of breast cancer seen in this study, the authors suggested that people with schizophrenia could experience other clinical conditions such as obesity that might increase their risk of breast cancer.

“As breast cancer may be a hormone-dependent cancer, a significant positive association between plasma prolactin levels and the risk of breast cancer has been observed; in addition, increased prolactin levels have been documented in women with schizophrenia, particularly for those receiving certain antipsychotics,” they wrote.

While the incidence of cancer in people with schizophrenia might not necessarily differ from that of the general population, the authors said studies have found that people with schizophrenia have higher cancer mortality. Because “breast cancer prevention and treatment options are less optimal in women with schizophrenia, our results highlight that women with schizophrenia deserve focused care for breast cancer screening and treatment,” they wrote.

The Tianjin Health Bureau Foundation and the Natural Science Foundation of Tianjin, China, supported the study. No conflicts of interest were declared.

SOURCE: Zhuo C et al. JAMA Psychiatry. 2018 Mar 7. doi: 10.1001/jamapsychiatry.2017.4748.

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Key clinical point: Women diagnosed with schizophrenia should receive intensive screening and treatment for breast cancer.

Major finding: Women with schizophrenia showed a 31% higher standardized incidence ratio of breast cancer than that of the general population.

Data source: Meta-analysis of 12 cohort studies involving 125,760 women.

Disclosures: The Tianjin Health Bureau Foundation and the Natural Science Foundation of Tianjin, China, supported the work. No conflicts of interest were declared.

Source: Zhuo C et al. JAMA Psychiatry. 2018 Mar 7. doi: 10.1001/jamapsychiatry.2017.4748.

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Gaps exist in receipt of clinically indicated genetic counseling after breast cancer diagnosis

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A minority of patients (43.5%) with an indication for breast cancer genetic risk evaluation actually received formal genetic counseling in clinical practice, according to an analysis of NCI Surveillance, Epidemiology, and End Results (SEER) data published in Journal of Clinical Oncology.

More expertise is required in genetic counseling, either formal counseling given by an expert, or by a cancer physician (physician-directed), wrote Steven J. Katz and his colleagues at the University of Michigan, Ann Arbor. With BRCA1/2-only testing, being replaced by multi-gene panel testing, further consideration and/or discussion of results and formulation of a management plan is required, they said.

Dr. Steven J. Katz
Of 5,080 women with favorable breast cancer prognosis identified in the SEER registries between 2013 and 2015 in Georgia and Los Angeles County, 1,171 were identified as having clinical indications for formal genetic risk evaluation according to NCCN guidelines.

Of those, 47.4% did not get tested, 40.7% tested negative, 7.4% had a variant of uncertain significance only, and 4.5% had a pathogenic mutation. Three quarters (74.6%) received some form of genetic counseling (43.5%, formal counseling and 31.1%, physician-directed discussion). Almost all tested patients (96.1%) reported some form of genetic discussion. One half (50.6%) of those not tested received any discussion about genetics, reported the authors.

 

 

SOURCE: Katz SJ et al. J Clin Oncol. 2018 Mar 12. doi: 10.1200/JCO.2017.76.2369.

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A minority of patients (43.5%) with an indication for breast cancer genetic risk evaluation actually received formal genetic counseling in clinical practice, according to an analysis of NCI Surveillance, Epidemiology, and End Results (SEER) data published in Journal of Clinical Oncology.

More expertise is required in genetic counseling, either formal counseling given by an expert, or by a cancer physician (physician-directed), wrote Steven J. Katz and his colleagues at the University of Michigan, Ann Arbor. With BRCA1/2-only testing, being replaced by multi-gene panel testing, further consideration and/or discussion of results and formulation of a management plan is required, they said.

Dr. Steven J. Katz
Of 5,080 women with favorable breast cancer prognosis identified in the SEER registries between 2013 and 2015 in Georgia and Los Angeles County, 1,171 were identified as having clinical indications for formal genetic risk evaluation according to NCCN guidelines.

Of those, 47.4% did not get tested, 40.7% tested negative, 7.4% had a variant of uncertain significance only, and 4.5% had a pathogenic mutation. Three quarters (74.6%) received some form of genetic counseling (43.5%, formal counseling and 31.1%, physician-directed discussion). Almost all tested patients (96.1%) reported some form of genetic discussion. One half (50.6%) of those not tested received any discussion about genetics, reported the authors.

 

 

SOURCE: Katz SJ et al. J Clin Oncol. 2018 Mar 12. doi: 10.1200/JCO.2017.76.2369.

 

A minority of patients (43.5%) with an indication for breast cancer genetic risk evaluation actually received formal genetic counseling in clinical practice, according to an analysis of NCI Surveillance, Epidemiology, and End Results (SEER) data published in Journal of Clinical Oncology.

More expertise is required in genetic counseling, either formal counseling given by an expert, or by a cancer physician (physician-directed), wrote Steven J. Katz and his colleagues at the University of Michigan, Ann Arbor. With BRCA1/2-only testing, being replaced by multi-gene panel testing, further consideration and/or discussion of results and formulation of a management plan is required, they said.

Dr. Steven J. Katz
Of 5,080 women with favorable breast cancer prognosis identified in the SEER registries between 2013 and 2015 in Georgia and Los Angeles County, 1,171 were identified as having clinical indications for formal genetic risk evaluation according to NCCN guidelines.

Of those, 47.4% did not get tested, 40.7% tested negative, 7.4% had a variant of uncertain significance only, and 4.5% had a pathogenic mutation. Three quarters (74.6%) received some form of genetic counseling (43.5%, formal counseling and 31.1%, physician-directed discussion). Almost all tested patients (96.1%) reported some form of genetic discussion. One half (50.6%) of those not tested received any discussion about genetics, reported the authors.

 

 

SOURCE: Katz SJ et al. J Clin Oncol. 2018 Mar 12. doi: 10.1200/JCO.2017.76.2369.

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Key clinical point: There exists a large gap between mandates for timely pretest formal genetic counseling of higher-risk, breast cancer patients and its implementation in clinical practice.

Major finding: Almost half (47.4%) of patients diagnosed with early breast cancer with an indication for genetic risk evaluation did not get genetic tests. Of those who got genetic testing, 43.5% received formal counseling and 31.1% received physician-directed discussion.

Study details: Data on 5,080 women aged 20-79 years diagnosed with early stage breast during 2013-2015, reported to National Cancer Institute Surveillance, Epidemiology, and End Results (SEER) registries of Georgia and Los Angeles County.

Disclosures: Potential conflict of interests were reported by Lauren P. Wallner, PhD (GlaxoSmithKline); Monica Morrow, MD (Genomic Health); Reshma Jagsi, MD (Amgen and AbbVie); and Allison W. Kurian, MD (Myriad Genetics, Invitae, Ambry Genetics, Genomic Health, GeneDx/BioReference, Genentech (a member of the Roche Group).

Source: Katz SJ et al. J Clin Oncol. 2018 Mar 12. doi: 10.1200/JCO.2017.76.2369.

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CECCY: Carvedilol didn’t curb cardiotoxicity in breast cancer patients

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– Anthracycline chemotherapy was associated with a cardiotoxicity incidence of roughly 14% of breast cancer patients regardless of treatment with carvedilol, based on data from a randomized trial of 200 patients.

“Cardio-oncology has been neglected,” Monica Samuel Avila, MD, of Hospital das Clínicas da Faculdade de Medicina da Universidade in São Paulo, Brazil, said in a video interview at the annual meeting of the American College of Cardiology. “We have seen improvement of survival in patients with cancer, but with that comes complications related to treatment. I think that the interactions between cardiologists and oncologists are increasing in a more important way,” she said.

In the Carvedilol for Prevention of Chemotherapy-Induced Cardiotoxicity (CECCY) Trial, Dr. Avila and colleagues evaluated primary prevention of cardiotoxicity in women with normal hearts who were undergoing chemotherapy for breast cancer.

 

 


Patients in the treatment group received a median carvedilol dose of 18.4 mg/day. The primary endpoint of cardiotoxicity, defined as a decrease in left ventricular ejection fraction (LVEF) of at least 10% at 6 months, occurred in 15% of carvedilol patients and 14% placebo patients, a nonsignificant difference. No significant differences occurred in diastolic dysfunction or in B-type natriuretic peptide (BNP) levels at 6 weeks, 12 weeks, or 24 weeks between the groups.

However, carvedilol patients showed significantly reduced troponin 1 levels compared with placebo, which suggests protection against myocardial injury, Dr. Avila said.


“In short follow up, we can see cardiotoxicity appearing, and we know we have to treat it promptly to prevent cardiac events,” she said.

Dr. Avila and colleagues identified 200 women older than 18 years with HER2-negative breast cancer tumor status and normal left ventricular ejection fraction. The patients were undergoing chemotherapy with 240 mg/m2 of anthracycline and were randomized to treatment with carvedilol or a placebo. Baseline characteristics were similar between the two groups.
 

 


Adverse effects were not significantly different between the groups, and the most common events in each group included dizziness, dry mouth, symptomatic hypertension, stomachache, and nausea. Although the results suggest that carvedilol can reduce the risk of myocardial injury, more research is needed to address the question of the increase in troponin without change in the LVEF, Dr. Avila noted. The study is ongoing and the research team intends to follow the low-risk patient population for a total of 2 years. “For high-risk patients, I am already giving carvedilol,” she said. “We believe if we find a difference in LVEF or clinical events, we could encourage cardiologists to give carvedilol in a low-risk population,” she said.

“This study highlights that there is no safe dose of anthracycline,” commented Bonnie Ky, MD of the University of Pennsylvania, Philadelphia, at a press briefing. She emphasized the value of carvedilol for a high-risk population, and stressed the importance of following long-term changes in heart injury markers after 1-2 years for low-risk patients.

Dr. Avila had no financial conflicts to disclose. Dr. Ky disclosed relationships with multiple companies including Bioinvent and Bristol Myers.

The findings were published simultaneously in the Journal of the American College of Cardiology.
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– Anthracycline chemotherapy was associated with a cardiotoxicity incidence of roughly 14% of breast cancer patients regardless of treatment with carvedilol, based on data from a randomized trial of 200 patients.

“Cardio-oncology has been neglected,” Monica Samuel Avila, MD, of Hospital das Clínicas da Faculdade de Medicina da Universidade in São Paulo, Brazil, said in a video interview at the annual meeting of the American College of Cardiology. “We have seen improvement of survival in patients with cancer, but with that comes complications related to treatment. I think that the interactions between cardiologists and oncologists are increasing in a more important way,” she said.

In the Carvedilol for Prevention of Chemotherapy-Induced Cardiotoxicity (CECCY) Trial, Dr. Avila and colleagues evaluated primary prevention of cardiotoxicity in women with normal hearts who were undergoing chemotherapy for breast cancer.

 

 


Patients in the treatment group received a median carvedilol dose of 18.4 mg/day. The primary endpoint of cardiotoxicity, defined as a decrease in left ventricular ejection fraction (LVEF) of at least 10% at 6 months, occurred in 15% of carvedilol patients and 14% placebo patients, a nonsignificant difference. No significant differences occurred in diastolic dysfunction or in B-type natriuretic peptide (BNP) levels at 6 weeks, 12 weeks, or 24 weeks between the groups.

However, carvedilol patients showed significantly reduced troponin 1 levels compared with placebo, which suggests protection against myocardial injury, Dr. Avila said.


“In short follow up, we can see cardiotoxicity appearing, and we know we have to treat it promptly to prevent cardiac events,” she said.

Dr. Avila and colleagues identified 200 women older than 18 years with HER2-negative breast cancer tumor status and normal left ventricular ejection fraction. The patients were undergoing chemotherapy with 240 mg/m2 of anthracycline and were randomized to treatment with carvedilol or a placebo. Baseline characteristics were similar between the two groups.
 

 


Adverse effects were not significantly different between the groups, and the most common events in each group included dizziness, dry mouth, symptomatic hypertension, stomachache, and nausea. Although the results suggest that carvedilol can reduce the risk of myocardial injury, more research is needed to address the question of the increase in troponin without change in the LVEF, Dr. Avila noted. The study is ongoing and the research team intends to follow the low-risk patient population for a total of 2 years. “For high-risk patients, I am already giving carvedilol,” she said. “We believe if we find a difference in LVEF or clinical events, we could encourage cardiologists to give carvedilol in a low-risk population,” she said.

“This study highlights that there is no safe dose of anthracycline,” commented Bonnie Ky, MD of the University of Pennsylvania, Philadelphia, at a press briefing. She emphasized the value of carvedilol for a high-risk population, and stressed the importance of following long-term changes in heart injury markers after 1-2 years for low-risk patients.

Dr. Avila had no financial conflicts to disclose. Dr. Ky disclosed relationships with multiple companies including Bioinvent and Bristol Myers.

The findings were published simultaneously in the Journal of the American College of Cardiology.

– Anthracycline chemotherapy was associated with a cardiotoxicity incidence of roughly 14% of breast cancer patients regardless of treatment with carvedilol, based on data from a randomized trial of 200 patients.

“Cardio-oncology has been neglected,” Monica Samuel Avila, MD, of Hospital das Clínicas da Faculdade de Medicina da Universidade in São Paulo, Brazil, said in a video interview at the annual meeting of the American College of Cardiology. “We have seen improvement of survival in patients with cancer, but with that comes complications related to treatment. I think that the interactions between cardiologists and oncologists are increasing in a more important way,” she said.

In the Carvedilol for Prevention of Chemotherapy-Induced Cardiotoxicity (CECCY) Trial, Dr. Avila and colleagues evaluated primary prevention of cardiotoxicity in women with normal hearts who were undergoing chemotherapy for breast cancer.

 

 


Patients in the treatment group received a median carvedilol dose of 18.4 mg/day. The primary endpoint of cardiotoxicity, defined as a decrease in left ventricular ejection fraction (LVEF) of at least 10% at 6 months, occurred in 15% of carvedilol patients and 14% placebo patients, a nonsignificant difference. No significant differences occurred in diastolic dysfunction or in B-type natriuretic peptide (BNP) levels at 6 weeks, 12 weeks, or 24 weeks between the groups.

However, carvedilol patients showed significantly reduced troponin 1 levels compared with placebo, which suggests protection against myocardial injury, Dr. Avila said.


“In short follow up, we can see cardiotoxicity appearing, and we know we have to treat it promptly to prevent cardiac events,” she said.

Dr. Avila and colleagues identified 200 women older than 18 years with HER2-negative breast cancer tumor status and normal left ventricular ejection fraction. The patients were undergoing chemotherapy with 240 mg/m2 of anthracycline and were randomized to treatment with carvedilol or a placebo. Baseline characteristics were similar between the two groups.
 

 


Adverse effects were not significantly different between the groups, and the most common events in each group included dizziness, dry mouth, symptomatic hypertension, stomachache, and nausea. Although the results suggest that carvedilol can reduce the risk of myocardial injury, more research is needed to address the question of the increase in troponin without change in the LVEF, Dr. Avila noted. The study is ongoing and the research team intends to follow the low-risk patient population for a total of 2 years. “For high-risk patients, I am already giving carvedilol,” she said. “We believe if we find a difference in LVEF or clinical events, we could encourage cardiologists to give carvedilol in a low-risk population,” she said.

“This study highlights that there is no safe dose of anthracycline,” commented Bonnie Ky, MD of the University of Pennsylvania, Philadelphia, at a press briefing. She emphasized the value of carvedilol for a high-risk population, and stressed the importance of following long-term changes in heart injury markers after 1-2 years for low-risk patients.

Dr. Avila had no financial conflicts to disclose. Dr. Ky disclosed relationships with multiple companies including Bioinvent and Bristol Myers.

The findings were published simultaneously in the Journal of the American College of Cardiology.
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REPORTING FROM ACC 18

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Key clinical point: Carvedilol was associated with a significant improvement in troponin 1 levels compared with placebo, but had no impact on left ventricular ejection fraction.

Major finding: Cardiotoxicity was roughly 14% in breast cancer patients treated with anthracycline whether they received carvedilol or placebo.

Study details: CECCY was a randomized, placebo-controlled trial of 200 patients with HER2-negative breast cancer tumor status.

Disclosures: Dr. Avila had no financial conflicts to disclose.

Source: Avila M. ACC 2018.

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Age at time of breast cancer diagnosis differs by race/ethnicity

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Nonwhite women are significantly more likely than white women to be diagnosed with breast cancer before age 50 years, according to an analysis of Surveillance, Epidemiology, and End Results (SEER) Program data for almost 750,000 women.

“Our finding challenges established norms with regard to screening practices and provides empirical evidence that race-based screening should be considered,” Sahael M. Stapleton, MD, and his associates at Massachusetts General Hospital, Boston, wrote in a research letter published online March 7 by JAMA Surgery.

Early breast cancer diagnosis was most common in Hispanic women, with 34.9% of diagnoses occurring before the age of 50 years. The corresponding proportions were 32.8% for Asian women, 31.0% for black women, and 23.6% for white women, they reported.

The researchers charted age at diagnosis and race/ethnicity for the 747,763 women in the SEER database from Jan. 1, 1973, through Dec. 31, 2010; this revealed “two distinct distribution patterns of age at diagnosis for female breast cancers: White patients peak in their 60s, whereas nonwhite patients peak in their 40s,” the investigators wrote.

Their calculations show that “screening ages would need to decrease to 47 years for black, 46 years for Hispanic, and 47 years for Asian patients ... to achieve a similar capture rate for nonwhite patients as current guidelines do for white patients” at 50 years of age.

Dr. Stapleton reported receiving support from two Massachusetts General Hospital fellowships. No other disclosures were reported.

SOURCE: Stapleton SM et al. JAMA Surg. 2018 Mar 7. doi: 10.1001/jamasurg.2018.003.

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Nonwhite women are significantly more likely than white women to be diagnosed with breast cancer before age 50 years, according to an analysis of Surveillance, Epidemiology, and End Results (SEER) Program data for almost 750,000 women.

“Our finding challenges established norms with regard to screening practices and provides empirical evidence that race-based screening should be considered,” Sahael M. Stapleton, MD, and his associates at Massachusetts General Hospital, Boston, wrote in a research letter published online March 7 by JAMA Surgery.

Early breast cancer diagnosis was most common in Hispanic women, with 34.9% of diagnoses occurring before the age of 50 years. The corresponding proportions were 32.8% for Asian women, 31.0% for black women, and 23.6% for white women, they reported.

The researchers charted age at diagnosis and race/ethnicity for the 747,763 women in the SEER database from Jan. 1, 1973, through Dec. 31, 2010; this revealed “two distinct distribution patterns of age at diagnosis for female breast cancers: White patients peak in their 60s, whereas nonwhite patients peak in their 40s,” the investigators wrote.

Their calculations show that “screening ages would need to decrease to 47 years for black, 46 years for Hispanic, and 47 years for Asian patients ... to achieve a similar capture rate for nonwhite patients as current guidelines do for white patients” at 50 years of age.

Dr. Stapleton reported receiving support from two Massachusetts General Hospital fellowships. No other disclosures were reported.

SOURCE: Stapleton SM et al. JAMA Surg. 2018 Mar 7. doi: 10.1001/jamasurg.2018.003.

 

Nonwhite women are significantly more likely than white women to be diagnosed with breast cancer before age 50 years, according to an analysis of Surveillance, Epidemiology, and End Results (SEER) Program data for almost 750,000 women.

“Our finding challenges established norms with regard to screening practices and provides empirical evidence that race-based screening should be considered,” Sahael M. Stapleton, MD, and his associates at Massachusetts General Hospital, Boston, wrote in a research letter published online March 7 by JAMA Surgery.

Early breast cancer diagnosis was most common in Hispanic women, with 34.9% of diagnoses occurring before the age of 50 years. The corresponding proportions were 32.8% for Asian women, 31.0% for black women, and 23.6% for white women, they reported.

The researchers charted age at diagnosis and race/ethnicity for the 747,763 women in the SEER database from Jan. 1, 1973, through Dec. 31, 2010; this revealed “two distinct distribution patterns of age at diagnosis for female breast cancers: White patients peak in their 60s, whereas nonwhite patients peak in their 40s,” the investigators wrote.

Their calculations show that “screening ages would need to decrease to 47 years for black, 46 years for Hispanic, and 47 years for Asian patients ... to achieve a similar capture rate for nonwhite patients as current guidelines do for white patients” at 50 years of age.

Dr. Stapleton reported receiving support from two Massachusetts General Hospital fellowships. No other disclosures were reported.

SOURCE: Stapleton SM et al. JAMA Surg. 2018 Mar 7. doi: 10.1001/jamasurg.2018.003.

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Breast cancer care delayed when patients have high deductibles

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High-deductible health insurance plans may be bad for women’s health, suggest results of a new study.

An analysis of data on women without evidence of breast cancer who were covered for at least 1 year in a low annual deductible plan and then switched by their employers to high annual deductible plans showed that when women were forced to shell out substantially more money before their insurance kicked in, they were significantly more likely to have delays in diagnostic breast imaging, breast biopsy, and initiation of chemotherapy.

“Such delays might lead to adverse long-term breast cancer outcomes. Policymakers, health insurers, and employers should consider designing or incentivizing health insurance benefits that facilitate transitions through key steps along the cancer care pathway,” wrote J. Frank Wharam, MB, and colleagues at Harvard Medical School and Harvard Pilgrim Health Care Institute in Boston. The report was published in Journal of Clinical Oncology.

 

 


The investigators conducted a controlled pre-post study to measure the occurrence of outcomes both before and after women were switched from a low-deductible health plan, defined as a maximum annual deductible of $500 or less, to a high-deductible plan, defined as an annual deductible of $1,000 or more.

The study population comprised 273,499 women aged 25-64 years who had no evidence of breast cancer before they were included in the study. The women had all been enrolled in a low-deductible plan for at least 1 year, and were then switched by employer mandate to a high-deductible plan and followed for up to 4 additional years.

Controls included 2.4 million women matched by time of inclusion whose employers continued to offer only low-deductible health plans.

Although at baseline there were no differences between the study sample and the controls in time to first diagnostic breast imaging, breast biopsy, diagnosis of early stage breast cancer, or initiation of breast cancer chemotherapy, at follow-up the women who had been switched to the high-deductible plans had significant delays in all categories.
 

 


Compared with controls, the hazard ratios (HR) for each parameter were as follows:

Time to first diagnostic breast imaging: HR = 0.96 (95% confidence interval 0.94-0.96)

Time to first breast biopsy: HR = 0.92 (0.89-0.95)

Time to early stage breast cancer diagnosis: HR = 0.83 (0.78-0.90)

Time to breast cancer chemotherapy: HR = 0.79 (0.72-0.86)

“The findings imply that the high out-of-pocket obligations under HDHPs [high-deductible health plans] might be a barrier to timely receipt of essential breast cancer services. Women in HDHPs might either delay presenting for concerning symptoms or, if proceeding along the pathway from breast cancer screening to diagnostic testing to treatment, be hesitant to undergo subsequent (and generally more expensive) care,” the authors wrote.

They noted that initially modest delays in diagnostic imaging appeared to snowball into longer delays as women proceeded through stages of care.

They recommend a strategy whereby insurers carve out exemptions to high deductibles for services such as diagnostic imaging and breast biopsy.

SOURCE: Wharam et al. J Clin Oncol. 2018 Feb 28. doi: 10.1200/JCO.2017.75.2501.

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High-deductible health insurance plans may be bad for women’s health, suggest results of a new study.

An analysis of data on women without evidence of breast cancer who were covered for at least 1 year in a low annual deductible plan and then switched by their employers to high annual deductible plans showed that when women were forced to shell out substantially more money before their insurance kicked in, they were significantly more likely to have delays in diagnostic breast imaging, breast biopsy, and initiation of chemotherapy.

“Such delays might lead to adverse long-term breast cancer outcomes. Policymakers, health insurers, and employers should consider designing or incentivizing health insurance benefits that facilitate transitions through key steps along the cancer care pathway,” wrote J. Frank Wharam, MB, and colleagues at Harvard Medical School and Harvard Pilgrim Health Care Institute in Boston. The report was published in Journal of Clinical Oncology.

 

 


The investigators conducted a controlled pre-post study to measure the occurrence of outcomes both before and after women were switched from a low-deductible health plan, defined as a maximum annual deductible of $500 or less, to a high-deductible plan, defined as an annual deductible of $1,000 or more.

The study population comprised 273,499 women aged 25-64 years who had no evidence of breast cancer before they were included in the study. The women had all been enrolled in a low-deductible plan for at least 1 year, and were then switched by employer mandate to a high-deductible plan and followed for up to 4 additional years.

Controls included 2.4 million women matched by time of inclusion whose employers continued to offer only low-deductible health plans.

Although at baseline there were no differences between the study sample and the controls in time to first diagnostic breast imaging, breast biopsy, diagnosis of early stage breast cancer, or initiation of breast cancer chemotherapy, at follow-up the women who had been switched to the high-deductible plans had significant delays in all categories.
 

 


Compared with controls, the hazard ratios (HR) for each parameter were as follows:

Time to first diagnostic breast imaging: HR = 0.96 (95% confidence interval 0.94-0.96)

Time to first breast biopsy: HR = 0.92 (0.89-0.95)

Time to early stage breast cancer diagnosis: HR = 0.83 (0.78-0.90)

Time to breast cancer chemotherapy: HR = 0.79 (0.72-0.86)

“The findings imply that the high out-of-pocket obligations under HDHPs [high-deductible health plans] might be a barrier to timely receipt of essential breast cancer services. Women in HDHPs might either delay presenting for concerning symptoms or, if proceeding along the pathway from breast cancer screening to diagnostic testing to treatment, be hesitant to undergo subsequent (and generally more expensive) care,” the authors wrote.

They noted that initially modest delays in diagnostic imaging appeared to snowball into longer delays as women proceeded through stages of care.

They recommend a strategy whereby insurers carve out exemptions to high deductibles for services such as diagnostic imaging and breast biopsy.

SOURCE: Wharam et al. J Clin Oncol. 2018 Feb 28. doi: 10.1200/JCO.2017.75.2501.

 

High-deductible health insurance plans may be bad for women’s health, suggest results of a new study.

An analysis of data on women without evidence of breast cancer who were covered for at least 1 year in a low annual deductible plan and then switched by their employers to high annual deductible plans showed that when women were forced to shell out substantially more money before their insurance kicked in, they were significantly more likely to have delays in diagnostic breast imaging, breast biopsy, and initiation of chemotherapy.

“Such delays might lead to adverse long-term breast cancer outcomes. Policymakers, health insurers, and employers should consider designing or incentivizing health insurance benefits that facilitate transitions through key steps along the cancer care pathway,” wrote J. Frank Wharam, MB, and colleagues at Harvard Medical School and Harvard Pilgrim Health Care Institute in Boston. The report was published in Journal of Clinical Oncology.

 

 


The investigators conducted a controlled pre-post study to measure the occurrence of outcomes both before and after women were switched from a low-deductible health plan, defined as a maximum annual deductible of $500 or less, to a high-deductible plan, defined as an annual deductible of $1,000 or more.

The study population comprised 273,499 women aged 25-64 years who had no evidence of breast cancer before they were included in the study. The women had all been enrolled in a low-deductible plan for at least 1 year, and were then switched by employer mandate to a high-deductible plan and followed for up to 4 additional years.

Controls included 2.4 million women matched by time of inclusion whose employers continued to offer only low-deductible health plans.

Although at baseline there were no differences between the study sample and the controls in time to first diagnostic breast imaging, breast biopsy, diagnosis of early stage breast cancer, or initiation of breast cancer chemotherapy, at follow-up the women who had been switched to the high-deductible plans had significant delays in all categories.
 

 


Compared with controls, the hazard ratios (HR) for each parameter were as follows:

Time to first diagnostic breast imaging: HR = 0.96 (95% confidence interval 0.94-0.96)

Time to first breast biopsy: HR = 0.92 (0.89-0.95)

Time to early stage breast cancer diagnosis: HR = 0.83 (0.78-0.90)

Time to breast cancer chemotherapy: HR = 0.79 (0.72-0.86)

“The findings imply that the high out-of-pocket obligations under HDHPs [high-deductible health plans] might be a barrier to timely receipt of essential breast cancer services. Women in HDHPs might either delay presenting for concerning symptoms or, if proceeding along the pathway from breast cancer screening to diagnostic testing to treatment, be hesitant to undergo subsequent (and generally more expensive) care,” the authors wrote.

They noted that initially modest delays in diagnostic imaging appeared to snowball into longer delays as women proceeded through stages of care.

They recommend a strategy whereby insurers carve out exemptions to high deductibles for services such as diagnostic imaging and breast biopsy.

SOURCE: Wharam et al. J Clin Oncol. 2018 Feb 28. doi: 10.1200/JCO.2017.75.2501.

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Key clinical point: Many women have high-deductible health plans that may discourage them from seeking essential care when needed.

Major finding: Women with an employer-mandated switch from a low- to high-deductible health plan had significant delays in diagnostic imaging, biopsy, diagnosis, and cancer care.

Study details: Controlled pre-post study of data on 273,499 women and 2.4 million controls.

Disclosures: The study was supported by National Cancer Institute and National Institute of Health grants. Dr. Wharam and three coauthors reported no conflicts of interest. Three coauthors reported honoraria and/or consulting/advisory roles with various companies.

Source: Wharam et al. J Clin Oncol. 2018 Feb 28. doi: 10.1200/JCO.2017.75.2501.

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FDA authorizes first direct-to-consumer BRCA1/2 test

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The Food and Drug Administration has authorized the first direct-to-consumer (DTC) test to report on three specific BRCA1/BRCA2 breast cancer gene mutations. 

Personal Genome Service Genetic Health Risk (GHR) Report for BRCA1/BRCA2 (Selected Variants) does not identify the most common BRCA1/2 mutations but rather the three most common in people of Ashkenazi (Eastern European) Jewish descent, the FDA said in a press statement. 


The test, marketed by 23andMe, analyzes DNA from a self-collected saliva sample.

The three mutations identified by the test are present in about 2% of Ashkenazi Jewish women, but rarely in other ethnic populations. Any individual who takes the test may have other mutations in BRCA1 or BRCA2 genes, or other cancer-related gene mutations that are not detected by this test. 

 

 

“This test provides information to certain individuals who may be at increased breast, ovarian, or prostate cancer risk and who might not otherwise get genetic screening and is a step forward in the availability of DTC genetic tests. But it has a lot of caveats,” Donald St. Pierre, acting director of the Office of In Vitro Diagnostics and Radiological Health in the FDA’s Center for Devices and Radiological Health, said in the press statement. “While the detection of a BRCA mutation on this test does indicate an increased risk, only a small percentage of Americans carry one of these three mutations and most BRCA mutations that increase an individual’s risk are not detected by this test. The test should not be used as a substitute for seeing your doctor for cancer screenings or counseling on genetic and lifestyle factors that can increase or decrease cancer risk.”

The authorization was based on data provided by the company to indicate the test correctly identifies the three genetic variants in saliva samples and is reproducible. In addition, the company submitted data to demonstrate that the instructions are comprehensible and easy to follow. 

The FDA cautions that consumers and health care professionals “should not use the test results to determine any treatments, including antihormone therapies and prophylactic removal of the breasts or ovaries.” Decisions should be made only after confirmatory testing and genetic counseling, they said. 

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The Food and Drug Administration has authorized the first direct-to-consumer (DTC) test to report on three specific BRCA1/BRCA2 breast cancer gene mutations. 

Personal Genome Service Genetic Health Risk (GHR) Report for BRCA1/BRCA2 (Selected Variants) does not identify the most common BRCA1/2 mutations but rather the three most common in people of Ashkenazi (Eastern European) Jewish descent, the FDA said in a press statement. 


The test, marketed by 23andMe, analyzes DNA from a self-collected saliva sample.

The three mutations identified by the test are present in about 2% of Ashkenazi Jewish women, but rarely in other ethnic populations. Any individual who takes the test may have other mutations in BRCA1 or BRCA2 genes, or other cancer-related gene mutations that are not detected by this test. 

 

 

“This test provides information to certain individuals who may be at increased breast, ovarian, or prostate cancer risk and who might not otherwise get genetic screening and is a step forward in the availability of DTC genetic tests. But it has a lot of caveats,” Donald St. Pierre, acting director of the Office of In Vitro Diagnostics and Radiological Health in the FDA’s Center for Devices and Radiological Health, said in the press statement. “While the detection of a BRCA mutation on this test does indicate an increased risk, only a small percentage of Americans carry one of these three mutations and most BRCA mutations that increase an individual’s risk are not detected by this test. The test should not be used as a substitute for seeing your doctor for cancer screenings or counseling on genetic and lifestyle factors that can increase or decrease cancer risk.”

The authorization was based on data provided by the company to indicate the test correctly identifies the three genetic variants in saliva samples and is reproducible. In addition, the company submitted data to demonstrate that the instructions are comprehensible and easy to follow. 

The FDA cautions that consumers and health care professionals “should not use the test results to determine any treatments, including antihormone therapies and prophylactic removal of the breasts or ovaries.” Decisions should be made only after confirmatory testing and genetic counseling, they said. 

The Food and Drug Administration has authorized the first direct-to-consumer (DTC) test to report on three specific BRCA1/BRCA2 breast cancer gene mutations. 

Personal Genome Service Genetic Health Risk (GHR) Report for BRCA1/BRCA2 (Selected Variants) does not identify the most common BRCA1/2 mutations but rather the three most common in people of Ashkenazi (Eastern European) Jewish descent, the FDA said in a press statement. 


The test, marketed by 23andMe, analyzes DNA from a self-collected saliva sample.

The three mutations identified by the test are present in about 2% of Ashkenazi Jewish women, but rarely in other ethnic populations. Any individual who takes the test may have other mutations in BRCA1 or BRCA2 genes, or other cancer-related gene mutations that are not detected by this test. 

 

 

“This test provides information to certain individuals who may be at increased breast, ovarian, or prostate cancer risk and who might not otherwise get genetic screening and is a step forward in the availability of DTC genetic tests. But it has a lot of caveats,” Donald St. Pierre, acting director of the Office of In Vitro Diagnostics and Radiological Health in the FDA’s Center for Devices and Radiological Health, said in the press statement. “While the detection of a BRCA mutation on this test does indicate an increased risk, only a small percentage of Americans carry one of these three mutations and most BRCA mutations that increase an individual’s risk are not detected by this test. The test should not be used as a substitute for seeing your doctor for cancer screenings or counseling on genetic and lifestyle factors that can increase or decrease cancer risk.”

The authorization was based on data provided by the company to indicate the test correctly identifies the three genetic variants in saliva samples and is reproducible. In addition, the company submitted data to demonstrate that the instructions are comprehensible and easy to follow. 

The FDA cautions that consumers and health care professionals “should not use the test results to determine any treatments, including antihormone therapies and prophylactic removal of the breasts or ovaries.” Decisions should be made only after confirmatory testing and genetic counseling, they said. 

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FDA approves abemaciclib plus aromatase inhibitor as initial therapy

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Abemaciclib (Verzenio) in combination with an aromatase inhibitor has been approved as initial endocrine-based therapy for postmenopausal women with hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative advanced or metastatic breast cancer, the US Food and Drug Administration announced in a press release.

Approval was based on the results of the MONARCH 3 study, a randomized, double-blind, placebo-controlled, multicenter clinical trial in postmenopausal women with HR-positive, HER2-negative advanced or metastatic breast cancer. A total of 493 patients were randomized to receive either abemaciclib 150 mg or placebo orally twice daily, plus the treating physician’s choice of letrozole or anastrozole. The estimated median progression-free survival (PFS) (RECIST 1.1) was 28.2 months (95% CI: 23.5, not reached) for patients receiving abemaciclib and 14.8 months (95% CI: 11.2, 19.2) for those receiving placebo (HR 0.540; 95% CI: 0.418, 0.698; p<0.0001).

The most common adverse reactions that were seen in at least 20% of patients receiving abemaciclib in MONARCH 3 and were reported at a rate more than 2% higher than the rates seen in the placebo arm were diarrhea, neutropenia, fatigue, infections, nausea, abdominal pain, anemia, vomiting, alopecia, decreased appetite, and leukopenia.

The recommended starting dose of abemaciclib in combination with an aromatase inhibitor is 150 mg twice daily orally with or without food.

Abemaciclib (Verzenio) is manufactured by Eli Lilly.

Full prescribing information is available at: https://www.accessdata.fda.gov/drugsatfda_docs/label/2018/208855s000lbl.pdf.

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Abemaciclib (Verzenio) in combination with an aromatase inhibitor has been approved as initial endocrine-based therapy for postmenopausal women with hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative advanced or metastatic breast cancer, the US Food and Drug Administration announced in a press release.

Approval was based on the results of the MONARCH 3 study, a randomized, double-blind, placebo-controlled, multicenter clinical trial in postmenopausal women with HR-positive, HER2-negative advanced or metastatic breast cancer. A total of 493 patients were randomized to receive either abemaciclib 150 mg or placebo orally twice daily, plus the treating physician’s choice of letrozole or anastrozole. The estimated median progression-free survival (PFS) (RECIST 1.1) was 28.2 months (95% CI: 23.5, not reached) for patients receiving abemaciclib and 14.8 months (95% CI: 11.2, 19.2) for those receiving placebo (HR 0.540; 95% CI: 0.418, 0.698; p<0.0001).

The most common adverse reactions that were seen in at least 20% of patients receiving abemaciclib in MONARCH 3 and were reported at a rate more than 2% higher than the rates seen in the placebo arm were diarrhea, neutropenia, fatigue, infections, nausea, abdominal pain, anemia, vomiting, alopecia, decreased appetite, and leukopenia.

The recommended starting dose of abemaciclib in combination with an aromatase inhibitor is 150 mg twice daily orally with or without food.

Abemaciclib (Verzenio) is manufactured by Eli Lilly.

Full prescribing information is available at: https://www.accessdata.fda.gov/drugsatfda_docs/label/2018/208855s000lbl.pdf.

Abemaciclib (Verzenio) in combination with an aromatase inhibitor has been approved as initial endocrine-based therapy for postmenopausal women with hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative advanced or metastatic breast cancer, the US Food and Drug Administration announced in a press release.

Approval was based on the results of the MONARCH 3 study, a randomized, double-blind, placebo-controlled, multicenter clinical trial in postmenopausal women with HR-positive, HER2-negative advanced or metastatic breast cancer. A total of 493 patients were randomized to receive either abemaciclib 150 mg or placebo orally twice daily, plus the treating physician’s choice of letrozole or anastrozole. The estimated median progression-free survival (PFS) (RECIST 1.1) was 28.2 months (95% CI: 23.5, not reached) for patients receiving abemaciclib and 14.8 months (95% CI: 11.2, 19.2) for those receiving placebo (HR 0.540; 95% CI: 0.418, 0.698; p<0.0001).

The most common adverse reactions that were seen in at least 20% of patients receiving abemaciclib in MONARCH 3 and were reported at a rate more than 2% higher than the rates seen in the placebo arm were diarrhea, neutropenia, fatigue, infections, nausea, abdominal pain, anemia, vomiting, alopecia, decreased appetite, and leukopenia.

The recommended starting dose of abemaciclib in combination with an aromatase inhibitor is 150 mg twice daily orally with or without food.

Abemaciclib (Verzenio) is manufactured by Eli Lilly.

Full prescribing information is available at: https://www.accessdata.fda.gov/drugsatfda_docs/label/2018/208855s000lbl.pdf.

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