4.5 Article

Zanubrutinib Monotherapy for Naive and Relapsed/Refractory Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma: A Pooled Analysis of Three Studies

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ADVANCES IN THERAPY
卷 39, 期 9, 页码 4250-4265

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SPRINGER
DOI: 10.1007/s12325-022-02238-7

关键词

CLL; SLL; Overall response rate; Post hoc analysis; Zanubrutinib

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  1. BeiGene - BeiGene

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This study demonstrates that Zanubrutinib has long-term benefits and a favorable safety profile in the treatment of patients with chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL). Early utilization of Zanubrutinib is associated with better clinical outcomes.
Introduction Zanubrutinib is a highly selective irreversible inhibitor of Bruton tyrosine kinase which has shown significant activity in lymphoid malignancies in early phase studies. We report here the long-term follow-up outcomes of zanubrutinib in various lines of therapy in patients with chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL). Methods This post hoc analysis pooled patients with treatment-naive (TN) or relapsed/refractory (R/R) CLL/SLL receiving zanubrutinib monotherapy from three phase 1/2 studies (BGB-3111-1002, BGB-3111-AU-003, BGB-3111-205). Results A total of 211 patients with CLL/SLL (TN 19, R/R 192) were included. After weighting (TN 19, R/R 24), the overall response rate (ORR) was 95.4% and significantly higher in the TN group than in the R/R group (100 vs. 91.0%, p < 0.0001). ORR was also significantly higher in the TN group than in the one prior line of therapy group (100 vs. 98.9%, p < 0.0001). Among those with R/R disease, the ORR was 97.8% in patients with one prior line of therapy (n = 79) and 90.7% in those with > 1 prior lines of therapy (n = 85; p = 0.080). The median follow-up times were 50.1, 35.7, and 45.9 months for TN, R/R and all cohorts, respectively. Progression-free survival and overall survival were significantly longer in the TN group and only one prior line of therapy group compared with the > 1 prior lines of therapy group (all p < 0.05) and were similar in the TN group compared with the one prior line therapy group. Efficacy was similar regardless of the presence of genomic aberrations. Most frequent grade >= 3 adverse events were infections (41.7%), neutropenia (34.1%), and thrombocytopenia (9.4%). Atrial fibrillation occurred in only 1.9% of patients. Conclusions With extended follow-up, zanubrutinib yielded long-term benefits and demonstrated a favorable safety profile for patients with TN or RR CLL/SLL. Earlier utilization of zanubrutinib was associated with better outcomes.

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