While the introduction of proteasome inhibitors, immunomodulators and monoclonal antibodies targeting CD38 have revolutionized the treatment of multiple myeloma, many patients become refractory to these agents. The B-cell maturation agent (BCMA) is expressed on 100% of plasma cells but not on immature hematopoietic cells or other normal tissue and has emerged as a novel target for immunotherapy in multiple myeloma. Agents targeting BCMA have been shown to significantly improve outcomes in triple-refractory patients. These agents include two CAR-T therapies, idecabtagene vicleucel (ide-cel) and ciltacabtagene autoleucel (cilta-cel), currently under regulatory review with the FDA for triple-refractory multiple myeloma and the antibody-drug conjugate belantamab mafodotin, approved in 2020 for patients who have received at least four prior therapies.
What factors will you consider when selecting a BCMA-directed therapy for triple-refractory patients? Are there certain groups of patients better suited for either an antibody-drug conjugate or a CAR-T therapy? Do you think anti-BCMA agents will eventually be used in earlier lines of therapy?
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BCMA targeted immunotherapy for multiple myeloma
2. Early to say if we can differentiate patient candidacy for BCMA ADC vs BCMA CAR-T, So far, the BCMA CAR-T seems to have more durable response
3. it is very likely that these agents will get tested in various combinations in earlier lines of therapy, and you may start seeing them being used for high risk patients, where it might be beneficial to add agents with different MOA, and improving synergy of treatment
2. Early to say if we can differentiate patient candidacy for BCMA ADC vs BCMA CAR-T, So far, the BCMA CAR-T seems to have more durable response
3. it is very likely that these agents will get tested in various combinations in earlier lines of therapy, and you may start seeing them being used for high risk patients, where it might be beneficial to add agents with different MOA, and improving synergy of treatment
2. Early to say if we can differentiate patient candidacy for BCMA ADC vs BCMA CAR-T, So far, the BCMA CAR-T seems to have more durable response
3. it is very likely that these agents will get tested in various combinations in earlier lines of therapy, and you may start seeing them being used for high risk patients, where it might be beneficial to add agents with different MOA, and improving synergy of treatment
2. Early to say if we can differentiate patient candidacy for BCMA ADC vs BCMA CAR-T, So far, the BCMA CAR-T seems to have more durable response
3. it is very likely that these agents will get tested in various combinations in earlier lines of therapy, and you may start seeing them being used for high risk patients, where it might be beneficial to add agents with different MOA, and improving synergy of treatment
2. Early to say if we can differentiate patient candidacy for BCMA ADC vs BCMA CAR-T, So far, the BCMA CAR-T seems to have more durable response
3. it is very likely that these agents will get tested in various combinations in earlier lines of therapy, and you may start seeing them being used for high risk patients, where it might be beneficial to add agents with different MOA, and improving synergy of treatment
2. Early to say if we can differentiate patient candidacy for BCMA ADC vs BCMA CAR-T, So far, the BCMA CAR-T seems to have more durable response
3. it is very likely that these agents will get tested in various combinations in earlier lines of therapy, and you may start seeing them being used for high risk patients, where it might be beneficial to add agents with different MOA, and improving synergy of treatment
Myeloma is lagging behind its sister B cell malignancies of non-Hodgkin's lymphoma and B cell ALL. However, hopefully, we will have an FDA approved product in bb2121 by the March 27, 2021 PDUFA date. Outside of Janssen's CARTITUDE program, most of the other companies are far behind in the clinical trial queue. There are over 20 other companies developing CAR T cells for myeloma-the VAST majority are directed against BCMA although other targets are also being pursued (e.g. Slam-F7). Also, there are a smaller number of companies utilizing allogeneic CAR T cell products. Response rates to CAR T cells have been reported in a range from 60-100% with complete remissions of 50-85%. Progression-free survival has varied substantially between trials from 10+ months to over 24 months. Most of the data is still relatively immature and median follow up is short. CRS and neurotoxicity are significantly lower incidence and severity as compared to those reported for NHL and ALL. Highly manageable. This allows consideration of the elderly and frail, even more so than a stem cell transplant. Car T cells ARE being moved up to 1-3 lines of therapy and even in the upfront setting in high risk disease.
The other avenue for BCMA directed therapies are bi-specific antibodies (CD3/BCMA) of which there are over 5 reported companies at the recent ASH December 2020. Bispecifics do not have the ocular toxicity as shown with belantamab but may cause cytokine release syndrome although relatively rare neurotoxicity. Response rates for single agent bispecific antibodies have ranged from 50-80%.
My preference would be for CAR T cells-rather a 'one and done' approach until disease progression. High response rates, manageable CRS and neurotoxicity. In contrast the antibody-drug conjugates and bispecifics are repeated cycles of therapy until disease progression.
Myeloma is lagging behind its sister B cell malignancies of non-Hodgkin's lymphoma and B cell ALL. However, hopefully, we will have an FDA approved product in bb2121 by the March 27, 2021 PDUFA date. Outside of Janssen's CARTITUDE program, most of the other companies are far behind in the clinical trial queue. There are over 20 other companies developing CAR T cells for myeloma-the VAST majority are directed against BCMA although other targets are also being pursued (e.g. Slam-F7). Also, there are a smaller number of companies utilizing allogeneic CAR T cell products. Response rates to CAR T cells have been reported in a range from 60-100% with complete remissions of 50-85%. Progression-free survival has varied substantially between trials from 10+ months to over 24 months. Most of the data is still relatively immature and median follow up is short. CRS and neurotoxicity are significantly lower incidence and severity as compared to those reported for NHL and ALL. Highly manageable. This allows consideration of the elderly and frail, even more so than a stem cell transplant. Car T cells ARE being moved up to 1-3 lines of therapy and even in the upfront setting in high risk disease.
The other avenue for BCMA directed therapies are bi-specific antibodies (CD3/BCMA) of which there are over 5 reported companies at the recent ASH December 2020. Bispecifics do not have the ocular toxicity as shown with belantamab but may cause cytokine release syndrome although relatively rare neurotoxicity. Response rates for single agent bispecific antibodies have ranged from 50-80%.
My preference would be for CAR T cells-rather a 'one and done' approach until disease progression. High response rates, manageable CRS and neurotoxicity. In contrast the antibody-drug conjugates and bispecifics are repeated cycles of therapy until disease progression.
Myeloma is lagging behind its sister B cell malignancies of non-Hodgkin's lymphoma and B cell ALL. However, hopefully, we will have an FDA approved product in bb2121 by the March 27, 2021 PDUFA date. Outside of Janssen's CARTITUDE program, most of the other companies are far behind in the clinical trial queue. There are over 20 other companies developing CAR T cells for myeloma-the VAST majority are directed against BCMA although other targets are also being pursued (e.g. Slam-F7). Also, there are a smaller number of companies utilizing allogeneic CAR T cell products. Response rates to CAR T cells have been reported in a range from 60-100% with complete remissions of 50-85%. Progression-free survival has varied substantially between trials from 10+ months to over 24 months. Most of the data is still relatively immature and median follow up is short. CRS and neurotoxicity are significantly lower incidence and severity as compared to those reported for NHL and ALL. Highly manageable. This allows consideration of the elderly and frail, even more so than a stem cell transplant. Car T cells ARE being moved up to 1-3 lines of therapy and even in the upfront setting in high risk disease.
The other avenue for BCMA directed therapies are bi-specific antibodies (CD3/BCMA) of which there are over 5 reported companies at the recent ASH December 2020. Bispecifics do not have the ocular toxicity as shown with belantamab but may cause cytokine release syndrome although relatively rare neurotoxicity. Response rates for single agent bispecific antibodies have ranged from 50-80%.
My preference would be for CAR T cells-rather a 'one and done' approach until disease progression. High response rates, manageable CRS and neurotoxicity. In contrast the antibody-drug conjugates and bispecifics are repeated cycles of therapy until disease progression.