alexa GA-101, a third-generation, humanized and glyco-engineered anti-CD20 mAb for the treatment of B-cell lymphoid malignancies.
Pharmaceutical Sciences

Pharmaceutical Sciences

Journal of Developing Drugs

Author(s): Robak T

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Abstract Glycart Biotechnology AG, Genentech Inc, F Hoffmann-La Roche Ltd, Biogen Idec Inc and Chugai Pharmaceutical Co Ltd are developing GA-101, a third-generation, humanized and glyco-engineered anti-CD20 IgG1 mAb, for the potential treatment of B-cell malignancies. Compared with classic type I CD20 antibodies (eg, rituximab), GA-101 binds with high affinity to the CD20 type II epitope, resulting in the induction of antibody-dependent cytotoxicity that is 5- to 100-fold greater than observed upon treatment with rituximab. GA-101 also exhibits superior direct cell killing properties than rituximab. In preclinical studies, GA-101 was significantly more potent and effective in depleting B-cells than rituximab, and induced dose-dependent antitumor activity, complete tumor regression and improved long-term survival in xenograft mouse models of B-cell malignancy. In a phase I/II clinical trial, GA-101 had a similar safety profile to rituximab, and exhibited promising efficacy in patients with relapsed/refractory CD20-positive lymphoid malignancies. At the time of publication, phase I/II trials for GA-101 were ongoing in B-cell malignancies. Based on preclinical and preliminary clinical data, GA-101 appears to be a promising therapeutic agent for CD20-positive B-cell lymphoid malignances, including non-Hodgkin lymphomas and chronic lymphocytic leukemia.
This article was published in Curr Opin Investig Drugs and referenced in Journal of Developing Drugs

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