Clinical observation of lenalidomide in treatment of high-intermediate-risk B-cell non-Hodgkin lymphoma / 白血病·淋巴瘤

ABSTRACT

Objective To observe the clinical efficacy and safety of the lenalidomide-based therapy regimen in the treatment of high-intermediate-risk B-cell non-Hodgkin lymphoma (B-NHL). Methods A retrospective analysis of 23 high-intermediate-risk B-NHL patients who were admitted to Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine from June 2015 to February 2018 was conducted, of which 7 relapsed or refractory (R/R) patients received lenalidomide combined with rituximab (R2) and plus different salvage chemotherapy regimens (DHAP, GDP, ICE) of each 28-day cycle; 5 elderly patients were initially treated with R2 of each 28-day cycle; 11 patients were administered by maintenance monotherapy of lenalidomide of each 28-day cycle, or R2 therapy of 3-month cycle. The primary endpoint was overall response, and the secondary endpoints were progression-free survival (PFS) and safety. Results The median follow-up time was 4.5 months (1-20 months) in the R/R and elderly initial-treated patients. The median time to response in the R/R group was 3 months (2-7 months), of which 3 patients were complete remission (CR), overall response was 3 patients, and the median PFS was 7 months. The median time to response in the elderly initial treatment group was 4 months (2-5 months), 1 of 4 eligible patients was CR and 2 were partial remission (PR), overall response was 3 patients, and the median PFS time had not reached. The median follow-up time in the maintenance treatment group was 15 months (2-32 months), the median PFS time had not reached, and the 1-year PFS rate was 64％ (95％ CI 36％-92％). The most common grade 3-4 adverse events were leukopenia and thrombocytopenia, each accounting for 35％, and most patients were tolerable. Conclusion Lenalidomide as an immunomodulator is effective and safety for elderly initial treatment, R/R and maintenance treatment patients with high-intermediate-risk B-NHL, and it can prolong their survival.