AVAHO

“Therapeutic innovations like elranatamab achieve a lasting response in 61% of patients with multiple myeloma and complete remission in 30%,” said María Victoria Mateos, MD, PhD, a consultant physician in the Hematology Service at the University Clinical Hospital of Salamanca, Spain, and president of the Spanish Society of Haematology and Haemotherapy.

“The introduction of treatments such as elranatamab (Elrexfio) is allowing patients with multiple myeloma, which is still incurable for now, to have different options and achieve long periods of remission, thus improving their survival,” she added. “This therapeutic innovation is highly effective and well tolerated in patients with relapse or refractory multiple myeloma.” The overall response rate is “up to 61%, early, deep, and long-lasting.”

In an interview with El Médico Interactivo, Dr. Mateos explained the new approaches to multiple myeloma. She highlighted the effectiveness of new treatments and reviewed the latest data on this disease, which were presented at the recent European Hematology Association Congress.
 

What is the incidence rate of multiple myeloma in the Spanish population?

Multiple myeloma has an incidence of approximately 4-5 new cases per 100,000 inhabitants per year. This means that around 3000 new cases are diagnosed each year in Spain. As with most tumors, multiple myeloma is generally slightly more common in males than females. It is the third most frequent hematologic cancer in men (1757 new cases) and women (1325 new cases), behind lymphoma and leukemias.

At what age is it most often diagnosed?

It affects older people, with recent reports indicating around 68-69 years as the median age. Although more young people are being diagnosed with multiple myeloma, analyses of how this hematologic cancer affects the general population show that it generally impacts patients over age 65 years.

What is the typical survival prognosis?

Thanks to research and therapeutic innovation, the prognosis has changed significantly over the past 20-25 years. Today, if a patient with multiple myeloma receives a diagnosis and does not exhibit poor prognostic characteristics (and this description fits approximately 70%-80% of patients with multiple myeloma), it is realistic to expect a survival exceeding 10 years. A few years ago, this outcome was unimaginable, but a significant amount of therapeutic innovation has made it possible. That’s why I emphasize that it is realistic to provide these data with such a positive outlook.

Is multiple myeloma a refractory type of cancer?

It was a refractory type of cancer. Twenty years ago, there were no treatment options, and therefore survival was around 2-3 years, because treatment mainly consisted of using alkylating agents and corticosteroids. This is what made it refractory.

With the emergence of new therapeutic innovations, patients have been responding better and their responses are lasting longer. Although there is still a group of patients, about 10%-15%, with a poor prognosis and refractory disease, those with standard risk are responding better to different therapies.

Although most patients will eventually exhaust the treatments, which until now were primarily triple-drug regimens (such as proteasome inhibitors, immunomodulators, and antiCD38 antibodies), the introduction of new therapies is extending the duration of responses.
 

Is the risk for relapse high?

It is very high, in the sense that almost all patients with multiple myeloma eventually relapse. However, we hope that there soon will be some patients who do not relapse.

What are the typical pathologic manifestations of this cancer? Does it affect everyone equally, or in specific ways in each person?

In multiple myeloma, we often say there are multiple myelomas. Clinically, the disease presents in most patients, around 80%, with two clinical manifestations: anemia and bone lesions. Less frequently, patients may also have kidney failure, hypercalcemia, and a higher tendency toward infection. Behind this rather common symptomatology, from a molecular and genetic perspective, each myeloma is practically unique, adding complexity to its treatment. Therefore, ultimately, myelomas end up being refractory.

Elranatamab is a new therapeutic tool. For which patients is it recommended?

It is a bispecific monoclonal antibody that corresponds to the new monotherapy strategies we have for treating patients with multiple myeloma. On the one hand, it targets damaged plasma cells, which are the patient’s tumor cells, and on the other, it binds the patient’s T cells and redirects them to the tumor niche. When this happens, the T cell activates and destroys the tumor cell.

This medication has been approved for patients with relapsed myeloma who have received traditional drugs for their treatment. We know well that patients who have already received proteasome inhibitors, immunomodulators, and anti-CD38 antibodies typically need something new after treatment. Before, there were no other options, and we would reuse what had been previously used. Now we have elranatamab, a bispecific monoclonal antibody targeting a new receptor that has shown significant responses as monotherapy.

More than 60% of patients respond, and more than 30% achieve complete remission. The key is the response duration and progression-free survival of almost a year and a half. This is the longest progression-free survival we have seen to date in previous lines. Therefore, it fills the needs we had for these relapsed or refractory myeloma patients.
 

What advantages does this new treatment offer?

It represents a therapeutic innovation because, as mentioned, it achieves a response in more than 60% of patients, and around 35% achieve complete remission. The median response duration has not been reached yet. Progression-free survival is 17.2 months, almost a year and a half, and overall survival is almost two years. 

Furthermore, it is administered as subcutaneous monotherapy weekly for the first six cycles and then every 15 days. It has a good safety profile, although some adverse events are known, so we have strategies to combat or mitigate them, making the treatment generally well tolerated.
 

What side effects are being observed?

They are manageable. When the drug is first administered, patients may experience what we call a cytokine release syndrome, which is a result of the treatment’s mechanism. However, we can predict very well when it occurs, usually 2 days after the first doses, and we have strategies to mitigate it.

The second most common adverse event we need to be cautious about is infection. Nowadays, before starting treatment, patients update their vaccination schedule, receive antiviral prophylaxis, and receive prophylaxis against certain germs, resulting in reduced infections. However, infections are probably the adverse events we need to be most careful about when treating the patient.

We must ensure that prophylaxis is performed, and if fever occurs and an infection is suspected, cultures and all kinds of studies must be done to identify and treat it properly.
 

How does elranatamab change the treatment of an incurable disease? Does it bring us closer to a cure or to making multiple myeloma a manageable chronic disease?

With the already approved elranatamab, the most important aspect is that it adds another treatment option for patients with myeloma. With the progression-free survival data I indicated, life expectancy is increased, with a good quality of life and acceptable safety.

Obviously, elranatamab is still under study and development, even in early lines, including in patients with newly diagnosed myeloma. When we are choosing first-line therapy, we select the best patients by combining traditional drugs with these new immunotherapies, such as elranatamab, it is likely that we are much closer to offering a cure to specific subgroups.

Although it won’t happen in all cases, I believe it will be applicable to a significant subgroup of patients, making chronicity of the disease a reality we are already approaching. Each day, we encounter more patients receiving different lines of treatment and ultimately meeting their life expectancy with myeloma. Even though some may die, it is often due to causes not related to myeloma. This is the most important contribution of these innovations, such as elranatamab.
 

Dr. Mateos reported receiving honoraria from Janssen, Celgene, Takeda, Amgen, GSK, AbbVie, Pfizer, Regeneron, Roche, Sanofi, Stemline, Oncopeptides, and Kite for delivering lectures and for participating in advisory boards. 

This story was translated from El Médico Interactivo, which is part of the Medscape professional network, using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

“Therapeutic innovations like elranatamab achieve a lasting response in 61% of patients with multiple myeloma and complete remission in 30%,” said María Victoria Mateos, MD, PhD, a consultant physician in the Hematology Service at the University Clinical Hospital of Salamanca, Spain, and president of the Spanish Society of Haematology and Haemotherapy.

“The introduction of treatments such as elranatamab (Elrexfio) is allowing patients with multiple myeloma, which is still incurable for now, to have different options and achieve long periods of remission, thus improving their survival,” she added. “This therapeutic innovation is highly effective and well tolerated in patients with relapse or refractory multiple myeloma.” The overall response rate is “up to 61%, early, deep, and long-lasting.”

In an interview with El Médico Interactivo, Dr. Mateos explained the new approaches to multiple myeloma. She highlighted the effectiveness of new treatments and reviewed the latest data on this disease, which were presented at the recent European Hematology Association Congress.
 

What is the incidence rate of multiple myeloma in the Spanish population?

Multiple myeloma has an incidence of approximately 4-5 new cases per 100,000 inhabitants per year. This means that around 3000 new cases are diagnosed each year in Spain. As with most tumors, multiple myeloma is generally slightly more common in males than females. It is the third most frequent hematologic cancer in men (1757 new cases) and women (1325 new cases), behind lymphoma and leukemias.

At what age is it most often diagnosed?

It affects older people, with recent reports indicating around 68-69 years as the median age. Although more young people are being diagnosed with multiple myeloma, analyses of how this hematologic cancer affects the general population show that it generally impacts patients over age 65 years.

What is the typical survival prognosis?

Thanks to research and therapeutic innovation, the prognosis has changed significantly over the past 20-25 years. Today, if a patient with multiple myeloma receives a diagnosis and does not exhibit poor prognostic characteristics (and this description fits approximately 70%-80% of patients with multiple myeloma), it is realistic to expect a survival exceeding 10 years. A few years ago, this outcome was unimaginable, but a significant amount of therapeutic innovation has made it possible. That’s why I emphasize that it is realistic to provide these data with such a positive outlook.

Is multiple myeloma a refractory type of cancer?

It was a refractory type of cancer. Twenty years ago, there were no treatment options, and therefore survival was around 2-3 years, because treatment mainly consisted of using alkylating agents and corticosteroids. This is what made it refractory.

With the emergence of new therapeutic innovations, patients have been responding better and their responses are lasting longer. Although there is still a group of patients, about 10%-15%, with a poor prognosis and refractory disease, those with standard risk are responding better to different therapies.

Although most patients will eventually exhaust the treatments, which until now were primarily triple-drug regimens (such as proteasome inhibitors, immunomodulators, and antiCD38 antibodies), the introduction of new therapies is extending the duration of responses.
 

Is the risk for relapse high?

It is very high, in the sense that almost all patients with multiple myeloma eventually relapse. However, we hope that there soon will be some patients who do not relapse.

What are the typical pathologic manifestations of this cancer? Does it affect everyone equally, or in specific ways in each person?

In multiple myeloma, we often say there are multiple myelomas. Clinically, the disease presents in most patients, around 80%, with two clinical manifestations: anemia and bone lesions. Less frequently, patients may also have kidney failure, hypercalcemia, and a higher tendency toward infection. Behind this rather common symptomatology, from a molecular and genetic perspective, each myeloma is practically unique, adding complexity to its treatment. Therefore, ultimately, myelomas end up being refractory.

Elranatamab is a new therapeutic tool. For which patients is it recommended?

It is a bispecific monoclonal antibody that corresponds to the new monotherapy strategies we have for treating patients with multiple myeloma. On the one hand, it targets damaged plasma cells, which are the patient’s tumor cells, and on the other, it binds the patient’s T cells and redirects them to the tumor niche. When this happens, the T cell activates and destroys the tumor cell.

This medication has been approved for patients with relapsed myeloma who have received traditional drugs for their treatment. We know well that patients who have already received proteasome inhibitors, immunomodulators, and anti-CD38 antibodies typically need something new after treatment. Before, there were no other options, and we would reuse what had been previously used. Now we have elranatamab, a bispecific monoclonal antibody targeting a new receptor that has shown significant responses as monotherapy.

More than 60% of patients respond, and more than 30% achieve complete remission. The key is the response duration and progression-free survival of almost a year and a half. This is the longest progression-free survival we have seen to date in previous lines. Therefore, it fills the needs we had for these relapsed or refractory myeloma patients.
 

What advantages does this new treatment offer?

It represents a therapeutic innovation because, as mentioned, it achieves a response in more than 60% of patients, and around 35% achieve complete remission. The median response duration has not been reached yet. Progression-free survival is 17.2 months, almost a year and a half, and overall survival is almost two years. 

Furthermore, it is administered as subcutaneous monotherapy weekly for the first six cycles and then every 15 days. It has a good safety profile, although some adverse events are known, so we have strategies to combat or mitigate them, making the treatment generally well tolerated.
 

What side effects are being observed?

They are manageable. When the drug is first administered, patients may experience what we call a cytokine release syndrome, which is a result of the treatment’s mechanism. However, we can predict very well when it occurs, usually 2 days after the first doses, and we have strategies to mitigate it.

The second most common adverse event we need to be cautious about is infection. Nowadays, before starting treatment, patients update their vaccination schedule, receive antiviral prophylaxis, and receive prophylaxis against certain germs, resulting in reduced infections. However, infections are probably the adverse events we need to be most careful about when treating the patient.

We must ensure that prophylaxis is performed, and if fever occurs and an infection is suspected, cultures and all kinds of studies must be done to identify and treat it properly.
 

How does elranatamab change the treatment of an incurable disease? Does it bring us closer to a cure or to making multiple myeloma a manageable chronic disease?

With the already approved elranatamab, the most important aspect is that it adds another treatment option for patients with myeloma. With the progression-free survival data I indicated, life expectancy is increased, with a good quality of life and acceptable safety.

Obviously, elranatamab is still under study and development, even in early lines, including in patients with newly diagnosed myeloma. When we are choosing first-line therapy, we select the best patients by combining traditional drugs with these new immunotherapies, such as elranatamab, it is likely that we are much closer to offering a cure to specific subgroups.

Although it won’t happen in all cases, I believe it will be applicable to a significant subgroup of patients, making chronicity of the disease a reality we are already approaching. Each day, we encounter more patients receiving different lines of treatment and ultimately meeting their life expectancy with myeloma. Even though some may die, it is often due to causes not related to myeloma. This is the most important contribution of these innovations, such as elranatamab.
 

Dr. Mateos reported receiving honoraria from Janssen, Celgene, Takeda, Amgen, GSK, AbbVie, Pfizer, Regeneron, Roche, Sanofi, Stemline, Oncopeptides, and Kite for delivering lectures and for participating in advisory boards. 

This story was translated from El Médico Interactivo, which is part of the Medscape professional network, using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

“Therapeutic innovations like elranatamab achieve a lasting response in 61% of patients with multiple myeloma and complete remission in 30%,” said María Victoria Mateos, MD, PhD, a consultant physician in the Hematology Service at the University Clinical Hospital of Salamanca, Spain, and president of the Spanish Society of Haematology and Haemotherapy.

“The introduction of treatments such as elranatamab (Elrexfio) is allowing patients with multiple myeloma, which is still incurable for now, to have different options and achieve long periods of remission, thus improving their survival,” she added. “This therapeutic innovation is highly effective and well tolerated in patients with relapse or refractory multiple myeloma.” The overall response rate is “up to 61%, early, deep, and long-lasting.”

In an interview with El Médico Interactivo, Dr. Mateos explained the new approaches to multiple myeloma. She highlighted the effectiveness of new treatments and reviewed the latest data on this disease, which were presented at the recent European Hematology Association Congress.
 

What is the incidence rate of multiple myeloma in the Spanish population?

Multiple myeloma has an incidence of approximately 4-5 new cases per 100,000 inhabitants per year. This means that around 3000 new cases are diagnosed each year in Spain. As with most tumors, multiple myeloma is generally slightly more common in males than females. It is the third most frequent hematologic cancer in men (1757 new cases) and women (1325 new cases), behind lymphoma and leukemias.

At what age is it most often diagnosed?

It affects older people, with recent reports indicating around 68-69 years as the median age. Although more young people are being diagnosed with multiple myeloma, analyses of how this hematologic cancer affects the general population show that it generally impacts patients over age 65 years.

What is the typical survival prognosis?

Thanks to research and therapeutic innovation, the prognosis has changed significantly over the past 20-25 years. Today, if a patient with multiple myeloma receives a diagnosis and does not exhibit poor prognostic characteristics (and this description fits approximately 70%-80% of patients with multiple myeloma), it is realistic to expect a survival exceeding 10 years. A few years ago, this outcome was unimaginable, but a significant amount of therapeutic innovation has made it possible. That’s why I emphasize that it is realistic to provide these data with such a positive outlook.

Is multiple myeloma a refractory type of cancer?

It was a refractory type of cancer. Twenty years ago, there were no treatment options, and therefore survival was around 2-3 years, because treatment mainly consisted of using alkylating agents and corticosteroids. This is what made it refractory.

With the emergence of new therapeutic innovations, patients have been responding better and their responses are lasting longer. Although there is still a group of patients, about 10%-15%, with a poor prognosis and refractory disease, those with standard risk are responding better to different therapies.

Although most patients will eventually exhaust the treatments, which until now were primarily triple-drug regimens (such as proteasome inhibitors, immunomodulators, and antiCD38 antibodies), the introduction of new therapies is extending the duration of responses.
 

Is the risk for relapse high?

It is very high, in the sense that almost all patients with multiple myeloma eventually relapse. However, we hope that there soon will be some patients who do not relapse.

What are the typical pathologic manifestations of this cancer? Does it affect everyone equally, or in specific ways in each person?

In multiple myeloma, we often say there are multiple myelomas. Clinically, the disease presents in most patients, around 80%, with two clinical manifestations: anemia and bone lesions. Less frequently, patients may also have kidney failure, hypercalcemia, and a higher tendency toward infection. Behind this rather common symptomatology, from a molecular and genetic perspective, each myeloma is practically unique, adding complexity to its treatment. Therefore, ultimately, myelomas end up being refractory.

Elranatamab is a new therapeutic tool. For which patients is it recommended?

It is a bispecific monoclonal antibody that corresponds to the new monotherapy strategies we have for treating patients with multiple myeloma. On the one hand, it targets damaged plasma cells, which are the patient’s tumor cells, and on the other, it binds the patient’s T cells and redirects them to the tumor niche. When this happens, the T cell activates and destroys the tumor cell.

This medication has been approved for patients with relapsed myeloma who have received traditional drugs for their treatment. We know well that patients who have already received proteasome inhibitors, immunomodulators, and anti-CD38 antibodies typically need something new after treatment. Before, there were no other options, and we would reuse what had been previously used. Now we have elranatamab, a bispecific monoclonal antibody targeting a new receptor that has shown significant responses as monotherapy.

More than 60% of patients respond, and more than 30% achieve complete remission. The key is the response duration and progression-free survival of almost a year and a half. This is the longest progression-free survival we have seen to date in previous lines. Therefore, it fills the needs we had for these relapsed or refractory myeloma patients.
 

What advantages does this new treatment offer?

It represents a therapeutic innovation because, as mentioned, it achieves a response in more than 60% of patients, and around 35% achieve complete remission. The median response duration has not been reached yet. Progression-free survival is 17.2 months, almost a year and a half, and overall survival is almost two years. 

Furthermore, it is administered as subcutaneous monotherapy weekly for the first six cycles and then every 15 days. It has a good safety profile, although some adverse events are known, so we have strategies to combat or mitigate them, making the treatment generally well tolerated.
 

What side effects are being observed?

They are manageable. When the drug is first administered, patients may experience what we call a cytokine release syndrome, which is a result of the treatment’s mechanism. However, we can predict very well when it occurs, usually 2 days after the first doses, and we have strategies to mitigate it.

The second most common adverse event we need to be cautious about is infection. Nowadays, before starting treatment, patients update their vaccination schedule, receive antiviral prophylaxis, and receive prophylaxis against certain germs, resulting in reduced infections. However, infections are probably the adverse events we need to be most careful about when treating the patient.

We must ensure that prophylaxis is performed, and if fever occurs and an infection is suspected, cultures and all kinds of studies must be done to identify and treat it properly.
 

How does elranatamab change the treatment of an incurable disease? Does it bring us closer to a cure or to making multiple myeloma a manageable chronic disease?

With the already approved elranatamab, the most important aspect is that it adds another treatment option for patients with myeloma. With the progression-free survival data I indicated, life expectancy is increased, with a good quality of life and acceptable safety.

Obviously, elranatamab is still under study and development, even in early lines, including in patients with newly diagnosed myeloma. When we are choosing first-line therapy, we select the best patients by combining traditional drugs with these new immunotherapies, such as elranatamab, it is likely that we are much closer to offering a cure to specific subgroups.

Although it won’t happen in all cases, I believe it will be applicable to a significant subgroup of patients, making chronicity of the disease a reality we are already approaching. Each day, we encounter more patients receiving different lines of treatment and ultimately meeting their life expectancy with myeloma. Even though some may die, it is often due to causes not related to myeloma. This is the most important contribution of these innovations, such as elranatamab.
 

Dr. Mateos reported receiving honoraria from Janssen, Celgene, Takeda, Amgen, GSK, AbbVie, Pfizer, Regeneron, Roche, Sanofi, Stemline, Oncopeptides, and Kite for delivering lectures and for participating in advisory boards. 

This story was translated from El Médico Interactivo, which is part of the Medscape professional network, using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

The US Food and Drug Administration (FDA) has approved lazertinib (Lazcluze) in combination with amivantamab-vmjw (Rybrevant) for upfront treatment of adults with locally advanced or metastatic non–small-cell lung cancer (NSCLC) who have EGFR exon 19 deletions or exon 21 L858R substitution mutations as detected by an FDA-approved test. 

This marks the first approval for lazertinib. Amivantamab was initially approved by the FDA in 2021 and carries a few indications for locally advanced or metastatic NSCLC. Both drugs are manufactured by Janssen Biotech Inc.

“Patients will now have the option of a potential new first-line standard of care with significant clinical benefits over osimertinib,” study investigator Alexander Spira, MD, PhD, director, Virginia Cancer Specialists Research Institute, said in a news release from Johnson & Johnson . 

Lazertinib is an oral, highly selective, third-generation EGFR tyrosine kinase inhibitor that can penetrate the brain and amivantamab is a bispecific antibody targeting EGFR and MET.

The approval was based on results from the phase 3 MARIPOSA trial, which showed that the combination reduced the risk of disease progression or death by 30% compared with osimertinib.

The MARIPOSA trial randomly allocated 1074 patients with exon 19 deletion or exon 21 L858R substitution mutation-positive locally advanced or metastatic NSCLC and no prior systemic therapy for advanced disease to amivantamab plus lazertinib, osimertinib alone, or lazertinib alone.

Lazertinib plus amivantamab demonstrated a statistically significant improvement in progression-free survival compared with osimertinib (hazard ratio, 0.70; P < .001). Median progression-free survival was 23.7 months with the combination vs 16.6 months osimertinib alone and 18.5 months with lazertinib alone.

The median duration of response was 9 months longer with the combination compared with osimertinib (25.8 months vs 16.7 months).

The most common adverse reactions (≥ 20%) were rash, nail toxicity, infusion-related reactions (amivantamab), musculoskeletal pain, edema, stomatitis, venous thromboembolism, paresthesia, fatigue, diarrhea, constipation, COVID-19, hemorrhage, dry skin, decreased appetite, pruritus, nausea, and ocular toxicity. 

“A serious safety signal of venous thromboembolic events was observed with lazertinib in combination with amivantamab and prophylactic anticoagulation should be administered for the first four months of therapy,” the FDA noted in a statement announcing the approval.

Results from MARIPOSA were first presented at the European Society for Medical Oncology 2023 Congress and published in The New England Journal of Medicine in June. Longer-term follow-up data from MARIPOSA will be presented at the International Association for the Study of Lung Cancer 2024 World Congress on Lung Cancer in September.
 

A version of this article appeared on Medscape.com.

The US Food and Drug Administration (FDA) has approved lazertinib (Lazcluze) in combination with amivantamab-vmjw (Rybrevant) for upfront treatment of adults with locally advanced or metastatic non–small-cell lung cancer (NSCLC) who have EGFR exon 19 deletions or exon 21 L858R substitution mutations as detected by an FDA-approved test. 

This marks the first approval for lazertinib. Amivantamab was initially approved by the FDA in 2021 and carries a few indications for locally advanced or metastatic NSCLC. Both drugs are manufactured by Janssen Biotech Inc.

“Patients will now have the option of a potential new first-line standard of care with significant clinical benefits over osimertinib,” study investigator Alexander Spira, MD, PhD, director, Virginia Cancer Specialists Research Institute, said in a news release from Johnson & Johnson . 

Lazertinib is an oral, highly selective, third-generation EGFR tyrosine kinase inhibitor that can penetrate the brain and amivantamab is a bispecific antibody targeting EGFR and MET.

The approval was based on results from the phase 3 MARIPOSA trial, which showed that the combination reduced the risk of disease progression or death by 30% compared with osimertinib.

The MARIPOSA trial randomly allocated 1074 patients with exon 19 deletion or exon 21 L858R substitution mutation-positive locally advanced or metastatic NSCLC and no prior systemic therapy for advanced disease to amivantamab plus lazertinib, osimertinib alone, or lazertinib alone.

Lazertinib plus amivantamab demonstrated a statistically significant improvement in progression-free survival compared with osimertinib (hazard ratio, 0.70; P < .001). Median progression-free survival was 23.7 months with the combination vs 16.6 months osimertinib alone and 18.5 months with lazertinib alone.

The median duration of response was 9 months longer with the combination compared with osimertinib (25.8 months vs 16.7 months).

The most common adverse reactions (≥ 20%) were rash, nail toxicity, infusion-related reactions (amivantamab), musculoskeletal pain, edema, stomatitis, venous thromboembolism, paresthesia, fatigue, diarrhea, constipation, COVID-19, hemorrhage, dry skin, decreased appetite, pruritus, nausea, and ocular toxicity. 

“A serious safety signal of venous thromboembolic events was observed with lazertinib in combination with amivantamab and prophylactic anticoagulation should be administered for the first four months of therapy,” the FDA noted in a statement announcing the approval.

Results from MARIPOSA were first presented at the European Society for Medical Oncology 2023 Congress and published in The New England Journal of Medicine in June. Longer-term follow-up data from MARIPOSA will be presented at the International Association for the Study of Lung Cancer 2024 World Congress on Lung Cancer in September.
 

A version of this article appeared on Medscape.com.

The US Food and Drug Administration (FDA) has approved lazertinib (Lazcluze) in combination with amivantamab-vmjw (Rybrevant) for upfront treatment of adults with locally advanced or metastatic non–small-cell lung cancer (NSCLC) who have EGFR exon 19 deletions or exon 21 L858R substitution mutations as detected by an FDA-approved test. 

This marks the first approval for lazertinib. Amivantamab was initially approved by the FDA in 2021 and carries a few indications for locally advanced or metastatic NSCLC. Both drugs are manufactured by Janssen Biotech Inc.

“Patients will now have the option of a potential new first-line standard of care with significant clinical benefits over osimertinib,” study investigator Alexander Spira, MD, PhD, director, Virginia Cancer Specialists Research Institute, said in a news release from Johnson & Johnson . 

Lazertinib is an oral, highly selective, third-generation EGFR tyrosine kinase inhibitor that can penetrate the brain and amivantamab is a bispecific antibody targeting EGFR and MET.

The approval was based on results from the phase 3 MARIPOSA trial, which showed that the combination reduced the risk of disease progression or death by 30% compared with osimertinib.

The MARIPOSA trial randomly allocated 1074 patients with exon 19 deletion or exon 21 L858R substitution mutation-positive locally advanced or metastatic NSCLC and no prior systemic therapy for advanced disease to amivantamab plus lazertinib, osimertinib alone, or lazertinib alone.

Lazertinib plus amivantamab demonstrated a statistically significant improvement in progression-free survival compared with osimertinib (hazard ratio, 0.70; P < .001). Median progression-free survival was 23.7 months with the combination vs 16.6 months osimertinib alone and 18.5 months with lazertinib alone.

The median duration of response was 9 months longer with the combination compared with osimertinib (25.8 months vs 16.7 months).

The most common adverse reactions (≥ 20%) were rash, nail toxicity, infusion-related reactions (amivantamab), musculoskeletal pain, edema, stomatitis, venous thromboembolism, paresthesia, fatigue, diarrhea, constipation, COVID-19, hemorrhage, dry skin, decreased appetite, pruritus, nausea, and ocular toxicity. 

“A serious safety signal of venous thromboembolic events was observed with lazertinib in combination with amivantamab and prophylactic anticoagulation should be administered for the first four months of therapy,” the FDA noted in a statement announcing the approval.

Results from MARIPOSA were first presented at the European Society for Medical Oncology 2023 Congress and published in The New England Journal of Medicine in June. Longer-term follow-up data from MARIPOSA will be presented at the International Association for the Study of Lung Cancer 2024 World Congress on Lung Cancer in September.
 

A version of this article appeared on Medscape.com.

Biotech startups worldwide are rushing to market screening tests that they claim can detect various cancers in early stages with just a few drops of blood. The tests allegedly will simplify cancer care by eliminating tedious scans, scopes, and swabs at the doctor’s office. 

The promise of these early detection tests is truly “enticing,” Hilary A. Robbins, PhD, from the International Agency for Research on Cancer of the World Health Organization in Lyon, France, said in an interview.

In an opinion article in The New England Journal of Medicine, she emphasized that the new cancer tests are much less cumbersome than traditional screening strategies for individual cancers. Moreover, they could enable the early detection of dozens of cancer types for which no screening has been available so far.
 

Meeting the Criteria

The problem is that these tests have not met the strict criteria typically required for traditional cancer screening tests. To be considered for introduction as a screening procedure, a test usually needs to meet the following four minimum requirements:

• The disease that the test screens for must have a presymptomatic form.
• The screening test must be able to identify this presymptomatic disease.
• Treating the disease in the presymptomatic phase improves prognosis (specifically, it affects cancer-specific mortality in a randomized controlled trial).
• The screening test is feasible, and the benefits outweigh potential risks.

“The new blood tests for multiple cancers have so far only met the second criteria, showing they can detect presymptomatic cancer,” Dr. Robbins wrote.

The next step would be to demonstrate that they affect cancer-specific mortality. “But currently, commercial interests seem to be influencing the evidence standards for these cancer tests,” said Dr. Robbins.
 

Inappropriate Endpoints?

Some proponents of such tests argue that, unlike for previous cancer screening procedures, initial approval should not depend on the endpoint of cancer-specific mortality. It would take too long to gather sufficient outcome data, and in the meantime, people would die, they argue.

Eric A. Klein, MD, from the Glickman Urological and Kidney Institute in Cleveland, Ohio, and colleagues advocate for alternative endpoints such as the incidence of late-stage cancer in an article published in Cancer Epidemiology, Biomarkers & Prevention.

“The concept would be,” they wrote, “that a negative signal would not indicate a mortality benefit, leading to the study being stopped. A positive signal, on the other hand, could result in provisional approval until mortality data and real-world evidence of effectiveness are available. This would resemble the accelerated approval of new cancer drugs, which often is based on progression-free survival until there postmarketing data on overall survival emerge.”

Dr. Klein is also employed at the US biotech start-up Grail, which developed the Galleri test, which is one of the best-known and most advanced cancer screening tests. The Galleri test uses cell-free DNA and machine learning to detect a common cancer signal in more than 50 cancer types and predict the origin of the cancer signal. Consumers in the United States can already order and perform the test.
 

An NHS Study

Arguments for different endpoints apparently resonated with the United Kingdom’s National Health Service (NHS). Three years ago, they initiated the Galleri study, a large randomized controlled trial to assess the effectiveness of Grail’s cancer test. The primary endpoint was not cancer-specific mortality, but the incidence of stage III or IV cancer.

The results are expected in 2026. But recruitment was stopped after 140,000 participants were enrolled. The NHS reported that the initial results were not convincing enough to continue the trial. Exact numbers were not disclosed.

The Galleri study deviates from the standard randomized controlled trial design for cancer screening procedures not only in terms of the primary endpoint, but also in blinding. The only participants who were unblinded and informed of their test results are those in the intervention group with a positive cancer test.
 

False Security

This trial design encourages participants to undergo blood tests once per year. But according to Dr. Robbins, it prevents the exploration of the phenomenon of “false security,” which is a potential drawback of the new cancer tests.

“Women with a negative mammogram can reasonably assume that they probably do not have breast cancer. But individuals with a negative cancer blood test could mistakenly believe they cannot have any cancer at all. As a result, they may not undergo standard early detection screenings or seek medical help early enough for potential cancer symptoms,” said Dr. Robbins.

To assess the actual risk-benefit ratio of the Galleri test, participants must receive their test results, she said. “Under real-world conditions, benefits and risks can come from positive and negative results.” 
 

Upcoming Trial

More illuminating results may come from a large trial planned by the National Cancer Institute in the United States. Several new cancer tests will be evaluated for their ability to reduce cancer-specific mortality. A pilot phase will start later in 2024. “This study may be the only one with sufficient statistical power to determine whether an approach based on these cancer tests can reduce cancer-specific mortality,” said Dr. Robbins.

For the new blood tests for multiple cancers, it is crucial that health authorities “set a high bar for a benefit,” she said. This, according to her, also means that they must show an effect on cancer-specific mortality before being introduced. “This evidence must come from studies in which commercial interests do not influence the design, execution, data management, or data analysis.”

This story was translated from the Medscape German edition using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version appeared on Medscape.com.

Biotech startups worldwide are rushing to market screening tests that they claim can detect various cancers in early stages with just a few drops of blood. The tests allegedly will simplify cancer care by eliminating tedious scans, scopes, and swabs at the doctor’s office. 

The promise of these early detection tests is truly “enticing,” Hilary A. Robbins, PhD, from the International Agency for Research on Cancer of the World Health Organization in Lyon, France, said in an interview.

In an opinion article in The New England Journal of Medicine, she emphasized that the new cancer tests are much less cumbersome than traditional screening strategies for individual cancers. Moreover, they could enable the early detection of dozens of cancer types for which no screening has been available so far.
 

Meeting the Criteria

The problem is that these tests have not met the strict criteria typically required for traditional cancer screening tests. To be considered for introduction as a screening procedure, a test usually needs to meet the following four minimum requirements:

• The disease that the test screens for must have a presymptomatic form.
• The screening test must be able to identify this presymptomatic disease.
• Treating the disease in the presymptomatic phase improves prognosis (specifically, it affects cancer-specific mortality in a randomized controlled trial).
• The screening test is feasible, and the benefits outweigh potential risks.

“The new blood tests for multiple cancers have so far only met the second criteria, showing they can detect presymptomatic cancer,” Dr. Robbins wrote.

The next step would be to demonstrate that they affect cancer-specific mortality. “But currently, commercial interests seem to be influencing the evidence standards for these cancer tests,” said Dr. Robbins.
 

Inappropriate Endpoints?

Some proponents of such tests argue that, unlike for previous cancer screening procedures, initial approval should not depend on the endpoint of cancer-specific mortality. It would take too long to gather sufficient outcome data, and in the meantime, people would die, they argue.

Eric A. Klein, MD, from the Glickman Urological and Kidney Institute in Cleveland, Ohio, and colleagues advocate for alternative endpoints such as the incidence of late-stage cancer in an article published in Cancer Epidemiology, Biomarkers & Prevention.

“The concept would be,” they wrote, “that a negative signal would not indicate a mortality benefit, leading to the study being stopped. A positive signal, on the other hand, could result in provisional approval until mortality data and real-world evidence of effectiveness are available. This would resemble the accelerated approval of new cancer drugs, which often is based on progression-free survival until there postmarketing data on overall survival emerge.”

Dr. Klein is also employed at the US biotech start-up Grail, which developed the Galleri test, which is one of the best-known and most advanced cancer screening tests. The Galleri test uses cell-free DNA and machine learning to detect a common cancer signal in more than 50 cancer types and predict the origin of the cancer signal. Consumers in the United States can already order and perform the test.
 

An NHS Study

Arguments for different endpoints apparently resonated with the United Kingdom’s National Health Service (NHS). Three years ago, they initiated the Galleri study, a large randomized controlled trial to assess the effectiveness of Grail’s cancer test. The primary endpoint was not cancer-specific mortality, but the incidence of stage III or IV cancer.

The results are expected in 2026. But recruitment was stopped after 140,000 participants were enrolled. The NHS reported that the initial results were not convincing enough to continue the trial. Exact numbers were not disclosed.

The Galleri study deviates from the standard randomized controlled trial design for cancer screening procedures not only in terms of the primary endpoint, but also in blinding. The only participants who were unblinded and informed of their test results are those in the intervention group with a positive cancer test.
 

False Security

This trial design encourages participants to undergo blood tests once per year. But according to Dr. Robbins, it prevents the exploration of the phenomenon of “false security,” which is a potential drawback of the new cancer tests.

“Women with a negative mammogram can reasonably assume that they probably do not have breast cancer. But individuals with a negative cancer blood test could mistakenly believe they cannot have any cancer at all. As a result, they may not undergo standard early detection screenings or seek medical help early enough for potential cancer symptoms,” said Dr. Robbins.

To assess the actual risk-benefit ratio of the Galleri test, participants must receive their test results, she said. “Under real-world conditions, benefits and risks can come from positive and negative results.” 
 

Upcoming Trial

More illuminating results may come from a large trial planned by the National Cancer Institute in the United States. Several new cancer tests will be evaluated for their ability to reduce cancer-specific mortality. A pilot phase will start later in 2024. “This study may be the only one with sufficient statistical power to determine whether an approach based on these cancer tests can reduce cancer-specific mortality,” said Dr. Robbins.

For the new blood tests for multiple cancers, it is crucial that health authorities “set a high bar for a benefit,” she said. This, according to her, also means that they must show an effect on cancer-specific mortality before being introduced. “This evidence must come from studies in which commercial interests do not influence the design, execution, data management, or data analysis.”

This story was translated from the Medscape German edition using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version appeared on Medscape.com.

Biotech startups worldwide are rushing to market screening tests that they claim can detect various cancers in early stages with just a few drops of blood. The tests allegedly will simplify cancer care by eliminating tedious scans, scopes, and swabs at the doctor’s office. 

The promise of these early detection tests is truly “enticing,” Hilary A. Robbins, PhD, from the International Agency for Research on Cancer of the World Health Organization in Lyon, France, said in an interview.

In an opinion article in The New England Journal of Medicine, she emphasized that the new cancer tests are much less cumbersome than traditional screening strategies for individual cancers. Moreover, they could enable the early detection of dozens of cancer types for which no screening has been available so far.
 

Meeting the Criteria

The problem is that these tests have not met the strict criteria typically required for traditional cancer screening tests. To be considered for introduction as a screening procedure, a test usually needs to meet the following four minimum requirements:

• The disease that the test screens for must have a presymptomatic form.
• The screening test must be able to identify this presymptomatic disease.
• Treating the disease in the presymptomatic phase improves prognosis (specifically, it affects cancer-specific mortality in a randomized controlled trial).
• The screening test is feasible, and the benefits outweigh potential risks.

“The new blood tests for multiple cancers have so far only met the second criteria, showing they can detect presymptomatic cancer,” Dr. Robbins wrote.

The next step would be to demonstrate that they affect cancer-specific mortality. “But currently, commercial interests seem to be influencing the evidence standards for these cancer tests,” said Dr. Robbins.
 

Inappropriate Endpoints?

Some proponents of such tests argue that, unlike for previous cancer screening procedures, initial approval should not depend on the endpoint of cancer-specific mortality. It would take too long to gather sufficient outcome data, and in the meantime, people would die, they argue.

Eric A. Klein, MD, from the Glickman Urological and Kidney Institute in Cleveland, Ohio, and colleagues advocate for alternative endpoints such as the incidence of late-stage cancer in an article published in Cancer Epidemiology, Biomarkers & Prevention.

“The concept would be,” they wrote, “that a negative signal would not indicate a mortality benefit, leading to the study being stopped. A positive signal, on the other hand, could result in provisional approval until mortality data and real-world evidence of effectiveness are available. This would resemble the accelerated approval of new cancer drugs, which often is based on progression-free survival until there postmarketing data on overall survival emerge.”

Dr. Klein is also employed at the US biotech start-up Grail, which developed the Galleri test, which is one of the best-known and most advanced cancer screening tests. The Galleri test uses cell-free DNA and machine learning to detect a common cancer signal in more than 50 cancer types and predict the origin of the cancer signal. Consumers in the United States can already order and perform the test.
 

An NHS Study

Arguments for different endpoints apparently resonated with the United Kingdom’s National Health Service (NHS). Three years ago, they initiated the Galleri study, a large randomized controlled trial to assess the effectiveness of Grail’s cancer test. The primary endpoint was not cancer-specific mortality, but the incidence of stage III or IV cancer.

The results are expected in 2026. But recruitment was stopped after 140,000 participants were enrolled. The NHS reported that the initial results were not convincing enough to continue the trial. Exact numbers were not disclosed.

The Galleri study deviates from the standard randomized controlled trial design for cancer screening procedures not only in terms of the primary endpoint, but also in blinding. The only participants who were unblinded and informed of their test results are those in the intervention group with a positive cancer test.
 

False Security

This trial design encourages participants to undergo blood tests once per year. But according to Dr. Robbins, it prevents the exploration of the phenomenon of “false security,” which is a potential drawback of the new cancer tests.

“Women with a negative mammogram can reasonably assume that they probably do not have breast cancer. But individuals with a negative cancer blood test could mistakenly believe they cannot have any cancer at all. As a result, they may not undergo standard early detection screenings or seek medical help early enough for potential cancer symptoms,” said Dr. Robbins.

To assess the actual risk-benefit ratio of the Galleri test, participants must receive their test results, she said. “Under real-world conditions, benefits and risks can come from positive and negative results.” 
 

Upcoming Trial

More illuminating results may come from a large trial planned by the National Cancer Institute in the United States. Several new cancer tests will be evaluated for their ability to reduce cancer-specific mortality. A pilot phase will start later in 2024. “This study may be the only one with sufficient statistical power to determine whether an approach based on these cancer tests can reduce cancer-specific mortality,” said Dr. Robbins.

For the new blood tests for multiple cancers, it is crucial that health authorities “set a high bar for a benefit,” she said. This, according to her, also means that they must show an effect on cancer-specific mortality before being introduced. “This evidence must come from studies in which commercial interests do not influence the design, execution, data management, or data analysis.”

This story was translated from the Medscape German edition using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version appeared on Medscape.com.

Having an ostomy is a dreaded prospect for many patients with rectal cancer.

To defer, and potentially avoid, this life-altering surgery, the watch-and-wait approach has become increasingly common among patients with locally advanced disease who have a complete response to neoadjuvant chemoradiation.

About 80% of these patients who have a complete clinical response — a perfectly healed scar where the tumor used to be and other favorable features — can forgo total mesorectal excision and preserve their rectum.

The success of watch-and-wait among complete responders has led some centers to offer the approach in patients with near-complete responses to neoadjuvant chemoradiation.

But watch-and-wait for near-complete clinical responders “is very controversial,” Alan P. Venook, MD, a gastrointestinal oncologist at the University of California, San Francisco (UCSF), told this news organization.

“You sure as hell don’t want to miss a chance to cure a patient,” Dr. Venook said.

A near-complete clinical response essentially means there is no sign of the tumor 8 weeks after total neoadjuvant therapy, but the tumor bed hasn’t completely healed.

The goal of watch-and-wait in this scenario is to give near-complete response lesions time to become complete responses.

But there’s no clear way to predict which tumors will evolve into a clinical complete response.

Recent studies evaluating the conversion rate have reported that anywhere from 39% to about 90% of near-complete responders became complete responders. Some of the variation likely comes down to differences in the clinical stage of patients evaluated in each study as well as the limited number of patients who achieve a near-complete response overall.

Other concerns have emerged that waiting for near-complete responses to become complete leaves extra time for some tumors to metastasize and that tumor regrowth is much higher compared with complete responders.

A recent study found that 13% of near-complete responders who preserved their rectum on watch-and-wait developed distant metastases vs about 5% of long-term complete responders. The study also found that just over half of near-complete responders have tumor regrowth compared with about one in five complete responders.

But even with regrowth, “surgery is still curative,” explained Julio Garcia-Aguilar, MD, PhD, a pioneer of watch-and-wait for rectal cancer.

And overall, around 50%-60% of patients with a near-complete response can avoid surgery and preserve their rectum.
 

Selecting Patients for Watch-and-Wait

The key to deciding which patients are right for watch-and-wait is to understand how a near-complete clinical response was defined in the OPRA trial, a landmark randomized trial led by Dr. Garcia-Aguilar that helped establish watch-and-wait as an option in rectal cancer.

OPRA defined a near-complete response as no visible tumor but, in the tumor bed, mild erythema, superficial ulceration, minor mucosal abnormality or small nodules, and an irregular mucosa. The criteria also included no palpable tumor with smooth induration or a minor mucosal abnormality on the digital rectal exam.

The National Comprehensive Cancer Network mirrored the definition when, for the first time, it recommended watch-and-wait as an option for near-complete response in its 2023 rectal cancer guidelines. The group also added a few MRI requirements.

UCSF offers the watch-and-wait option to some patients with near-complete responses, but each decision is made on a case-by-case basis by a tumor board considering numerous measures of tumor aggressiveness.

Even then, “we have, in many cases, struggled to figure out what the right choices are,” Dr. Venook said.

For those chosen for watch-and-wait, Dr. Venook noted that UCSF has top-notch surgeons, radiation oncologists, medical oncologists, and pathologists who have the resources to follow patients closely.

For community practices without the resources of a major cancer center, watch-and-wait for near-complete response to rectal cancer “is really asking a lot,” Dr. Venook said.

Dr. Garcia-Aguilar, a colorectal surgeon at Memorial Sloan Kettering Cancer Center in New York City, explained that after years of studying the issue, he is comfortable with watch-and-wait in near-complete responders as long as it’s done carefully and in patients who will comply with ongoing surveillance.

Dr. Garcia-Aguilar explained that, after diagnosing a near-complete response 8 weeks following total neoadjuvant therapy, the patient needs to come back 6 weeks later. At that point, it’s time to assess whether that near-complete response is evolving into a complete response or not evolving into a complete response.

If it’s evolving into a complete response, surveillance continues about every 8 weeks, but if the tumor has stopped responding, “you take [the patient] to the operating room,” Dr. Garcia-Aguilar said.

As for the bigger safety concern — that near clinical complete response tumors will metastasize — Dr. Garcia-Aguilar’s opinion is that micrometastases are probably already there when the rectal cancer is first diagnosed and will manifest themselves “no matter what happens to the primary tumor.”

Because of that, he noted, “I don’t think the risk is very high” when surgery is delayed a few months to give near-complete response patients a chance to keep their rectum.

The way to answer the metastasis question is to do a randomized trial pitting surgery against watch-and-wait in patients with near-clinical complete response rectal cancer.

However, Dr. Garcia-Aguilar doesn’t think that trial will ever happen. Patients won’t allow themselves to be randomized to surgery once they find out they might be able to avoid a permanent ostomy, he said.

Dr. Venook had no disclosures. Dr. Garcia-Aguilar reported personal fees from Medtronic, Johnson & Johnson, and Intuitive Surgical.
 

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

Having an ostomy is a dreaded prospect for many patients with rectal cancer.

To defer, and potentially avoid, this life-altering surgery, the watch-and-wait approach has become increasingly common among patients with locally advanced disease who have a complete response to neoadjuvant chemoradiation.

About 80% of these patients who have a complete clinical response — a perfectly healed scar where the tumor used to be and other favorable features — can forgo total mesorectal excision and preserve their rectum.

The success of watch-and-wait among complete responders has led some centers to offer the approach in patients with near-complete responses to neoadjuvant chemoradiation.

But watch-and-wait for near-complete clinical responders “is very controversial,” Alan P. Venook, MD, a gastrointestinal oncologist at the University of California, San Francisco (UCSF), told this news organization.

“You sure as hell don’t want to miss a chance to cure a patient,” Dr. Venook said.

A near-complete clinical response essentially means there is no sign of the tumor 8 weeks after total neoadjuvant therapy, but the tumor bed hasn’t completely healed.

The goal of watch-and-wait in this scenario is to give near-complete response lesions time to become complete responses.

But there’s no clear way to predict which tumors will evolve into a clinical complete response.

Recent studies evaluating the conversion rate have reported that anywhere from 39% to about 90% of near-complete responders became complete responders. Some of the variation likely comes down to differences in the clinical stage of patients evaluated in each study as well as the limited number of patients who achieve a near-complete response overall.

Other concerns have emerged that waiting for near-complete responses to become complete leaves extra time for some tumors to metastasize and that tumor regrowth is much higher compared with complete responders.

A recent study found that 13% of near-complete responders who preserved their rectum on watch-and-wait developed distant metastases vs about 5% of long-term complete responders. The study also found that just over half of near-complete responders have tumor regrowth compared with about one in five complete responders.

But even with regrowth, “surgery is still curative,” explained Julio Garcia-Aguilar, MD, PhD, a pioneer of watch-and-wait for rectal cancer.

And overall, around 50%-60% of patients with a near-complete response can avoid surgery and preserve their rectum.
 

Selecting Patients for Watch-and-Wait

The key to deciding which patients are right for watch-and-wait is to understand how a near-complete clinical response was defined in the OPRA trial, a landmark randomized trial led by Dr. Garcia-Aguilar that helped establish watch-and-wait as an option in rectal cancer.

OPRA defined a near-complete response as no visible tumor but, in the tumor bed, mild erythema, superficial ulceration, minor mucosal abnormality or small nodules, and an irregular mucosa. The criteria also included no palpable tumor with smooth induration or a minor mucosal abnormality on the digital rectal exam.

The National Comprehensive Cancer Network mirrored the definition when, for the first time, it recommended watch-and-wait as an option for near-complete response in its 2023 rectal cancer guidelines. The group also added a few MRI requirements.

UCSF offers the watch-and-wait option to some patients with near-complete responses, but each decision is made on a case-by-case basis by a tumor board considering numerous measures of tumor aggressiveness.

Even then, “we have, in many cases, struggled to figure out what the right choices are,” Dr. Venook said.

For those chosen for watch-and-wait, Dr. Venook noted that UCSF has top-notch surgeons, radiation oncologists, medical oncologists, and pathologists who have the resources to follow patients closely.

For community practices without the resources of a major cancer center, watch-and-wait for near-complete response to rectal cancer “is really asking a lot,” Dr. Venook said.

Dr. Garcia-Aguilar, a colorectal surgeon at Memorial Sloan Kettering Cancer Center in New York City, explained that after years of studying the issue, he is comfortable with watch-and-wait in near-complete responders as long as it’s done carefully and in patients who will comply with ongoing surveillance.

Dr. Garcia-Aguilar explained that, after diagnosing a near-complete response 8 weeks following total neoadjuvant therapy, the patient needs to come back 6 weeks later. At that point, it’s time to assess whether that near-complete response is evolving into a complete response or not evolving into a complete response.

If it’s evolving into a complete response, surveillance continues about every 8 weeks, but if the tumor has stopped responding, “you take [the patient] to the operating room,” Dr. Garcia-Aguilar said.

As for the bigger safety concern — that near clinical complete response tumors will metastasize — Dr. Garcia-Aguilar’s opinion is that micrometastases are probably already there when the rectal cancer is first diagnosed and will manifest themselves “no matter what happens to the primary tumor.”

Because of that, he noted, “I don’t think the risk is very high” when surgery is delayed a few months to give near-complete response patients a chance to keep their rectum.

The way to answer the metastasis question is to do a randomized trial pitting surgery against watch-and-wait in patients with near-clinical complete response rectal cancer.

However, Dr. Garcia-Aguilar doesn’t think that trial will ever happen. Patients won’t allow themselves to be randomized to surgery once they find out they might be able to avoid a permanent ostomy, he said.

Dr. Venook had no disclosures. Dr. Garcia-Aguilar reported personal fees from Medtronic, Johnson & Johnson, and Intuitive Surgical.
 

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

Having an ostomy is a dreaded prospect for many patients with rectal cancer.

To defer, and potentially avoid, this life-altering surgery, the watch-and-wait approach has become increasingly common among patients with locally advanced disease who have a complete response to neoadjuvant chemoradiation.

About 80% of these patients who have a complete clinical response — a perfectly healed scar where the tumor used to be and other favorable features — can forgo total mesorectal excision and preserve their rectum.

The success of watch-and-wait among complete responders has led some centers to offer the approach in patients with near-complete responses to neoadjuvant chemoradiation.

But watch-and-wait for near-complete clinical responders “is very controversial,” Alan P. Venook, MD, a gastrointestinal oncologist at the University of California, San Francisco (UCSF), told this news organization.

“You sure as hell don’t want to miss a chance to cure a patient,” Dr. Venook said.

A near-complete clinical response essentially means there is no sign of the tumor 8 weeks after total neoadjuvant therapy, but the tumor bed hasn’t completely healed.

The goal of watch-and-wait in this scenario is to give near-complete response lesions time to become complete responses.

But there’s no clear way to predict which tumors will evolve into a clinical complete response.

Recent studies evaluating the conversion rate have reported that anywhere from 39% to about 90% of near-complete responders became complete responders. Some of the variation likely comes down to differences in the clinical stage of patients evaluated in each study as well as the limited number of patients who achieve a near-complete response overall.

Other concerns have emerged that waiting for near-complete responses to become complete leaves extra time for some tumors to metastasize and that tumor regrowth is much higher compared with complete responders.

A recent study found that 13% of near-complete responders who preserved their rectum on watch-and-wait developed distant metastases vs about 5% of long-term complete responders. The study also found that just over half of near-complete responders have tumor regrowth compared with about one in five complete responders.

But even with regrowth, “surgery is still curative,” explained Julio Garcia-Aguilar, MD, PhD, a pioneer of watch-and-wait for rectal cancer.

And overall, around 50%-60% of patients with a near-complete response can avoid surgery and preserve their rectum.
 

Selecting Patients for Watch-and-Wait

The key to deciding which patients are right for watch-and-wait is to understand how a near-complete clinical response was defined in the OPRA trial, a landmark randomized trial led by Dr. Garcia-Aguilar that helped establish watch-and-wait as an option in rectal cancer.

OPRA defined a near-complete response as no visible tumor but, in the tumor bed, mild erythema, superficial ulceration, minor mucosal abnormality or small nodules, and an irregular mucosa. The criteria also included no palpable tumor with smooth induration or a minor mucosal abnormality on the digital rectal exam.

The National Comprehensive Cancer Network mirrored the definition when, for the first time, it recommended watch-and-wait as an option for near-complete response in its 2023 rectal cancer guidelines. The group also added a few MRI requirements.

UCSF offers the watch-and-wait option to some patients with near-complete responses, but each decision is made on a case-by-case basis by a tumor board considering numerous measures of tumor aggressiveness.

Even then, “we have, in many cases, struggled to figure out what the right choices are,” Dr. Venook said.

For those chosen for watch-and-wait, Dr. Venook noted that UCSF has top-notch surgeons, radiation oncologists, medical oncologists, and pathologists who have the resources to follow patients closely.

For community practices without the resources of a major cancer center, watch-and-wait for near-complete response to rectal cancer “is really asking a lot,” Dr. Venook said.

Dr. Garcia-Aguilar, a colorectal surgeon at Memorial Sloan Kettering Cancer Center in New York City, explained that after years of studying the issue, he is comfortable with watch-and-wait in near-complete responders as long as it’s done carefully and in patients who will comply with ongoing surveillance.

Dr. Garcia-Aguilar explained that, after diagnosing a near-complete response 8 weeks following total neoadjuvant therapy, the patient needs to come back 6 weeks later. At that point, it’s time to assess whether that near-complete response is evolving into a complete response or not evolving into a complete response.

If it’s evolving into a complete response, surveillance continues about every 8 weeks, but if the tumor has stopped responding, “you take [the patient] to the operating room,” Dr. Garcia-Aguilar said.

As for the bigger safety concern — that near clinical complete response tumors will metastasize — Dr. Garcia-Aguilar’s opinion is that micrometastases are probably already there when the rectal cancer is first diagnosed and will manifest themselves “no matter what happens to the primary tumor.”

Because of that, he noted, “I don’t think the risk is very high” when surgery is delayed a few months to give near-complete response patients a chance to keep their rectum.

The way to answer the metastasis question is to do a randomized trial pitting surgery against watch-and-wait in patients with near-clinical complete response rectal cancer.

However, Dr. Garcia-Aguilar doesn’t think that trial will ever happen. Patients won’t allow themselves to be randomized to surgery once they find out they might be able to avoid a permanent ostomy, he said.

Dr. Venook had no disclosures. Dr. Garcia-Aguilar reported personal fees from Medtronic, Johnson & Johnson, and Intuitive Surgical.
 

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