GSK to acquire CMG1A46 from Chimagen Biosciences
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GSK (GSK) plc and Chimagen Biosciences, a privately held biotechnology company, announced an agreement for GSK to acquire CMG1A46, a clinical-stage dual CD19 and CD20-targeted T cell-engager, from Chimagen for $300M upfront. GSK plans to develop and commercialize CMG1A46 with a focus on B cell-driven autoimmune diseases, such as systemic lupus erythematosus, or SLE, and lupus nephritis, or LN, with potential to expand into related autoimmune diseases. CMG1A46 is currently in phase I clinical trials in leukemia and lymphoma in both the U.S. and China. GSK aims to begin a Phase 1 trial in lupus in 2025. “For over a decade, GSK has been a pioneer in the treatment of lupus. This agreement underscores the importance of novel therapeutic approaches to address the heterogeneity of lupus manifestations and the continued burden, particularly in patients who suffer from severe disease and are refractory to current standard of care,” the company stated. Tony Wood, Chief Scientific Officer, GSK, said: “Through our work in systemic lupus erythematosus and lupus nephritis, we increasingly understand the underlying drivers of B cell-driven diseases. As a novel therapeutic option directed at deep B cell depletion, CMG1A46 offers exciting potential which we are pleased to take forward to address unmet need in lupus and related autoimmune conditions.” Under the terms of this agreement, GSK will pay $300M upfront to acquire full global rights to CMG1A46. In addition, Chimagen will be eligible to receive success-based development and commercial milestone payments for CMG1A46 totalling $550M. This agreement is subject to customary conditions, including applicable regulatory agency clearances under the Hart-Scott-Rodino Act in the U.S.
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