Simcere, AbbVie Partner on Antibody

SIM0 500 is currently in Phase I clinical trials in patients with relapsed or refractory multiple myeloma (MM), in both China and the U.S.

SIM 0500 is a humanized trispecific antibody that targets GPRC5D, BCMA, and CD3, developed independently by Simcere Zaiming using their T-cell engager polyspecific antibody technology platform. This molecule features a low affinity/high target-activating CD3 engaging arm and binding sites for the two tumor antigens: G-Protein-coupled receptor class 5 member D (GPRC5D) and B-cell maturation antigen (BCMA). SIM0500 has shown strong T cell cytotoxicity against multiple myeloma (MM) cells by leveraging a combination of various antitumor effects.

"As a leader in hematologic malignancies, AbbVie is committed to advancing innovative treatments for complex cancers like multiple myeloma through our relentless R&D efforts and collaborations," said Mariana Cota Stirner, M.D., Ph.D., vice president, therapeutic area head for hematology, AbbVie. "We look forward to partnering with Simcere Zaiming, to advance this novel trispecific antibody, which has the potential to help address significant unmet medical needs for people living with multiple myeloma"

"SIM 0500 is developed via Simcere Zaiming's proprietary T-cell engager platform," said Renhong Tang, PhD, CEO of Simcere Zaiming. "We are excited to partner with AbbVie on this novel drug candidate and look forward to working together to advance the clinical development of SIM0500. "

Simcere Zaiming will receive an upfront payment from AbbVie and is eligible to receive option fees and milestone payments of up to $1.055B, as well as tiered royalties on net sales outside of the Greater China territory. AbbVie is eligible to receive tiered royalties on net sales in the Greater China territory.

Simcere Zaiming is an oncology-focused biopharmaceutical company and a subsidiary of Simcere Pharmaceutical Group Limited ). Founded in 2023, Simcere is committed to developing disruptive therapies that have the potential to address unmet clinical needs for cancer patients around the world. Simcere Zaiming has built an innovative R&D pipeline, with differentiated clinical assets. Several products of Simcere Zaiming are commercially available in China, which include Cosela, Endostar, and Envafolimab. Simcere Zaiming strives to bring potentially breakthrough treatment options to cancer patients worldwide through in-house R&D, manufacturing, and commercialization, as well as collaborations with global partners of innovative cancer therapeutics.