AACR, Author Interviews, Cancer Research / 19.12.2019
Neoantigens Can Stimulate Immunity in Relapsed Multiple Myeloma
MedicalResearch.com Interview with:
[caption id="attachment_52532" align="alignleft" width="130"]
Dr. Parekh[/caption]
Dr. Samir Parekh, MBBS
Associate Professor
Medicine, Hematology and Medical Oncology
Icahn School of Medicine at Mount Sinai
MedicalResearch.com: What is the background for this study? Would you briefly describe what is meant by 'neoantigens'? How might they be used to stimulate immunity in a multiple myeloma patients?
Response: Myeloma is considered a “cold” tumor for immunotherapy (as compared to some solid tumors such as melanoma) given the relatively fewer DNA mutations in an average myeloma patient. Our clinical experience suggests that this may not be totally correct. Our findings focus on mutations that can become antigens (neo-antigens) and challenges the stereotype. We can create vaccines based on peptides resulting from these mutations to stimulate immune responses.
Dr. Parekh[/caption]
Dr. Samir Parekh, MBBS
Associate Professor
Medicine, Hematology and Medical Oncology
Icahn School of Medicine at Mount Sinai
MedicalResearch.com: What is the background for this study? Would you briefly describe what is meant by 'neoantigens'? How might they be used to stimulate immunity in a multiple myeloma patients?
Response: Myeloma is considered a “cold” tumor for immunotherapy (as compared to some solid tumors such as melanoma) given the relatively fewer DNA mutations in an average myeloma patient. Our clinical experience suggests that this may not be totally correct. Our findings focus on mutations that can become antigens (neo-antigens) and challenges the stereotype. We can create vaccines based on peptides resulting from these mutations to stimulate immune responses.








Dr. Philip McCarthy[/caption]
Philip McCarthy, BA, MD
Professor of Oncology
Director, Blood and Marrow Transplant Program
Roswell Park Cancer Institute
Associate Professor of Medicine
Jacobs School of Medicine and Biomedical Sciences
State University of New York at Buffalo
Buffalo, NY 14263
MedicalResearch.com: What is the background for this study? What are the main findings?
Dr. McCarthy: There have been three Phase III studies that examined the role of maintenance lenalidomide after autologous stem cell transplant (ASCT) for newly diagnosed multiple myeloma patients. IFM 2005-02 (France), CALGB 100104 (Alliance, USA), GIMEMA-RVMM-PI-209 (Italy). All three studies had progression free survival (PFS) as their primary endpoint and all demonstrated a superior PFS when compared to placebo or no therapy after ASCT. However only the CALGB 100104 study demonstrated a statistically superior overall survival (OS). Thus, a meta-analysis was necessary to assess the effect of post-ASCT lenalidomide maintenance on overall survival. This study utilized a pooled analysis of updated primary-source patient data from all three studies after the primary efficacy analyses had been conducted. The meta-analysis demonstrated that there is a statistically superior OS (P value=0.001, HR=0.74 (0.62-0.89)), Median OS for no maintenance or placebo was 86 months and the median OS for lenalidomide had not been reached. The median OS for lenalidomide treatment arm was extrapolated to be 116 months based on median of the control arm and HR (median, 86 months; HR = 0.74). Thus, there is a 26% reduction in the risk of death which is an estimated 2.5 year increase in median OS. There is an increased incidence of second primary malignancies with lenalidomide maintenance when compared to placebo but this risk is less than the risk of dying when not receiving lenalidomide.
