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A phase 1/2 trial of ublituximab, a novel anti-CD20 monoclonal antibody, in patients with B-cell non-Hodgkin lymphoma or chronic lymphocytic leukaemia previously exposed to rituximab
Journal article   Open access   Peer reviewed

A phase 1/2 trial of ublituximab, a novel anti-CD20 monoclonal antibody, in patients with B-cell non-Hodgkin lymphoma or chronic lymphocytic leukaemia previously exposed to rituximab

Ahmed Sawas, Charles M. Farber, Marshall T. Schreeder, Mazen Y. Khalil, Daruka Mahadevan, Changchun Deng, Jennifer E. Amengual, Petros G. Nikolinakos, Jill M. Kolesar, John G. Kuhn, …
British journal of haematology, Vol.177(2), pp.243-253
04/2017
DOI: 10.1111/bjh.14534
PMCID: PMC5412890
PMID: 28220479
url
https://doi.org/10.1111/bjh.14534View
Published (Version of record) Open Access

Abstract

This phase 1/2 study evaluated the safety, pharmacokinetic behavior and anti-tumour activity of ublituximab, a unique type I, chimeric, glycoengineered anti-CD20 monoclonal antibody, in rituximab-relapsed or -refractory patients with B-cell non-Hodgkin lymphoma (B-NHL) or chronic lymphocytic leukaemia (CLL). Induction therapy (doses of 450-1200mg) consisted of 4 weekly infusions in cycle 1 for NHL and 3 weekly infusions in cycles 1 and 2 for CLL. Patients received ublituximab maintenance monthly during cycles 3-5, then once every 3months for up to 2years. Enrolled patients with B-NHL (n=27) and CLL (n=8) had a median of 3 prior therapies. No dose-limiting toxicities or unexpected adverse events (AEs) occurred. The most common AEs were infusion-related reactions (40%; grade 3/4, 0%); fatigue (37%; grade 3/4, 3%); pyrexia (29%; grade 3/4, 0%); and diarrhoea (26%; grade 3/4, 0%). Common haematological AEs were neutropenia (14%; grade 3/4, 14%) and anaemia (11%; grade 3/4, 6%). The overall response rate for evaluable patients (n=31) was 45% (13% complete responses, 32% partial responses). Median duration of response and progression-free survival were 92months and 77months, respectively. Ublituximab was well-tolerated and efficacious in a heterogeneous and highly rituximab-pre-treated patient population.
Hematology Life Sciences & Biomedicine Science & Technology

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