NEW YORK – according to evidence presented at the 2023 Lymphoma, Leukemia, and Myeloma Congress.
DLBCL is characterized by the National Institutes of Health as an aggressive malignancy and the most common lymphoma. Research presented at the conference indicated that 60%70% of patients were cured with six to eight cycles of rituximab, cyclophosphamide, doxorubicin, vincristine and prednisolone (R-CHOP).
courtesy MD Anderson Cancer Center
Dr. Jason Westin
“In the past, if a relapsed of refractory DLBCL patient couldn’t get a transplant, they were likely headed for palliative care. CAR T-cell therapy is no longer experimental. Not only can we offer it to patients who are ineligible for transplant (and manage the side effects), the treatment has proven to offer better overall survival and cure rates, even in patients who eligible for ASCT,” said presenter Jason Westin, MD, director of the lymphoma clinical research program at the University of Texas MD Anderson Cancer Center, Houston.
The ZUMA-7 phase 3trial among patients with early r/r DLBCL demonstrated the superiority of CAR T-cell therapy with the agent, axicabtagene ciloleucel (YESCARTA, Kita Pharma) versus standard of care (chemoimmunotherapy followed by high-dose chemotherapy and ASCT). Those in the axicabtagene ciloleucel (axi-cel) group had a median progression free survival (PFS) of 14.7 months and an estimated 4-year overall survival (OS) rate of 54.6% compared to 3.7 months and 46% in the control group.
Patients treated with axi-cel experienced a higher rate of adverse events (AE) grade 3 of higher, compared with the ACST group (91% vs. 83%) Furthermore, patients who received axi-cel had cytokine release syndrome (6%) and neurologic events in (21%) grade 3 or higher, compared with 0% and less than 1% in the ASCT group.
At the conference, Dr. Westin’s copanelist Jennifer Amengual, MD, of Columbia University Irving Medical Center, New York, interpreted the data on adverse events (AEs) from ZUMA-7 to mean that if a patient is especially susceptible to CAR T side effects, then ASCT could be preferred. She also outlined a second strategy that shows promise when a patient has either failed CAR T and ASCT or whose frailty demands an approach that avoids AEs.
Dr. Amengual cited a study in which patients with r/r DLBCL were treated with the bispecific antibody glofitamab (Columvi/Roche), which induced a complete response in 39% of patients at a median follow-up of 12.6 months and a 12-month PFS rate of 37%. Those treated with the agent experienced cytokine release syndrome and neurologic events grade 3 or higher, at a rate of 4% and 3% respectively.
“Efforts to make off-the-shelf CAR T therapy are ongoing. With some fine-tuning the PFS and OS with bispecific antibodies will likely approach or exceed both CAR T and ACST. The fact that they could come right off the shelf, rather than having to be tailor made for each patient, gives them a huge advantage in terms of cost and availability, while maintaining what appears to be an excellent safety profile” said Morton Colman, MD, professor of medicine at Weill Cornell Medicine, New York, and chair of the 2023 Lymphoma, Leukemia, and Myeloma Congress.
Dr. Amengual disclosed ties with Astra Zeneca and Incyte. Dr. Westin reported ties with Abbie, ADC therapeutics, AstraZeneca, Bristol-Myers Squibb, Genentech, GenMad, Hanssen, Kite/Gilead, Morphosys/Incyte, Novartis, Nurix, Regeneron, and SeaGen. Dr. Coleman had no disclosures.