Front‐line and second‐line treatment for mantle cell lymphoma in clinical practice: A multicenter retrospective analysis.

Background: There are few reports of clinical practice treatment patterns and efficacy in mantle cell lymphoma (MCL). Materials and Methods: We retrospectively studied a large, multicenter, cohort of patients with MCL diagnosed between 2000 and 2020 in eight institutions. Results: 536 patients were registered (73% male, median of 70 years). Front‐line treatment was based on high‐dose cytarabine, bendamustine, and anthracyclines in 42%, 12%, and 15%, respectively. The median PFS for all patients was 45 months; 68, 34, and 30 months for those who received high‐dose cytarabine‐based, bendamustine‐based and anthracycline‐based therapy. 204 patients received second‐line. Bendamustine‐based treatment was the most common second‐line regimen (36% of patients). The median second‐line PFS (sPFS) for the entire cohort was 14 months; 19, 24, and 31 for bendamustine‐, platinum‐, and high‐dose cytarabine‐based regimens, with broad confidence intervals for these latter estimates. Patients treated with cytarabine‐based therapies in the front‐line and those with front‐line PFS longer than 24 months had a substantially superior sPFS. Conclusion: Front‐line treatment in this cohort of MCL was as expected and with a median PFS of over 3.5 years. Second‐line treatment strategies were heterogeneous and the median second‐line PFS was little over 1 year. [ABSTRACT FROM AUTHOR]