Advances in therapy · 2022
Zanubrutinib Monotherapy for Naïve and Relapsed/Refractory Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma: A Pooled Analysis of Three Studies.
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Xu Wei, Yang Shenmiao, Tam Constantine S, Seymour John F, Zhou Keshu, Opat Stephen, Qiu Lugui, Sun Mingyuan, Wang Tingyu, Trotman Judith, Pan Ling, Gao Sujun, Zhou Jianfeng, Zhou Daobin, Zhu Jun, Song Yuqin, Hu Jianda, Feng Ru, Huang Haiwen, Su Dan, Shi Miao, Li Jianyong
Аннотация
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-naïve (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.
TRIAL REGISTRATION: Clinical Trials.gov identifiers, NCT03189524, NCT02343120 (retrospectively registered), and NCT03206918 (retrospectively registered).
METHODS: This post hoc analysis pooled patients with treatment-naïve (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.
TRIAL REGISTRATION: Clinical Trials.gov identifiers, NCT03189524, NCT02343120 (retrospectively registered), and NCT03206918 (retrospectively registered).