Ibrutinib for the treatment of relapsed/refractory mantle cell lymphoma: extended 3.5-year follow up from a pooled analysis

Long-Term Outcomes with Ibrutinib Versus the Prior Regimen: A Pooled Analysis in Relapsed/Refractory (R/R) Mantle Cell Lymphoma (MCL) with up to 7.5 Years of Extended Follow-up

Introduction In MCL, progression-free survival (PFS) generally declines with each successive line of chemoimmunotherapy (CIT). We have previously published that with ibrutinib, a first-in-class oral inhibitor of Bruton's tyrosine kinase and a standard of care treatment (tx) for R/R MCL, median PFS exceeded 2 years (yrs) when used at first relapse (Rule S, et al. Haematologica. 2018;104:e211-e214). Here we present an updated pooled analysis with 15 months (mos) of additional follow-up, and for the first time, a comparison of outcomes with ibrutinib versus the prior regimen. Methods Patients (pts) enrolled in SPARK (MCL2001; NCT01599949), RAY (MCL3001; NCT01646021), and PCYC-1104 (NCT01236391…

Outcomes in 370 patients with mantle cell lymphoma treated with ibrutinib: a pooled analysis from three open-label studies

Ibrutinib is highly active in treating mantle cell lymphoma (MCL), an aggressive B-cell lymphoma. We pooled data from three ibrutinib studies to explore the impact of baseline patient characteristics on treatment response. Patients with relapsed/refractory MCL (n = 370) treated with ibrutinib had an objective response rate (ORR) of 66% (20% complete response; 46% partial response); median duration of response (DOR), progression-free survival (PFS) and overall survival (OS) were 18.6, 12.8 and 25.0 months, respectively. Univariate analyses showed patients with one versus >one prior line of therapy had longer OS. Multivariate analyses identified that one prior line of therapy affected PFS; Ea…