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Br J Haematol ; 182(3): 404-411, 2018 08.
Article in English | MEDLINE | ID: mdl-29785709

ABSTRACT

Ibrutinib has shown significant activity in patients with relapsed or refractory mantle cell lymphoma (RR-MCL). We report the long-term outcome and safety profile of a single-centre, single arm, open-label, phase 2 study of RR-MCL treated with IR. Overall, the median follow-up time was 47 months (range 1-52 months), median duration on treatment was 16 months (range 1-53 months) and median number of treatment cycles was 17 (range 1-56). Twenty-nine patients (58%) achieved complete remission and of these, 12 patients continue on study. Thirty-eight patients discontinued treatment, 14 due to disease progression (2 transformed). Patients with blastoid morphology, high risk MCL International Prognostic Index score and high Ki67% had inferior survival. The commonest grade 1-2 toxicities were fatigue, diarrhoea, nausea, arthralgias and myalgias. None had long term toxicities. Median progression-free survival was 43 months. Eighteen patients (36%) died (14 deaths were MCL-related). The median overall survival has not been reached. Treatment with IR can provide durable remissions in a subset of patients with RR-MCL, especially those with low Ki67%. The possible benefit of adding other therapies in combination with IR in RR-MCL is under exploration.


Subject(s)
Lymphoma, Mantle-Cell/drug therapy , Pyrazoles/therapeutic use , Pyrimidines/therapeutic use , Rituximab/therapeutic use , Salvage Therapy/methods , Adenine/analogs & derivatives , Agammaglobulinaemia Tyrosine Kinase/analysis , Follow-Up Studies , Humans , Ki-67 Antigen/analysis , Lymphoma, Mantle-Cell/mortality , Piperidines , Prognosis , Recurrence , Remission Induction , Salvage Therapy/adverse effects , Survival Analysis
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