Trubion Initiates Study Of SBI-087 For Rheumatoid Arthritis Treatment

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Wyeth Pharmaceuticals has initiated a Phase 1 clinical trial of SBI-087, a next-generation drug candidate for the treatment of rheumatoid arthritis (RA). In collaboration with Trubion, Wyeth Pharmaceuticals is developing SBI-087 and other CD20-directed products. SBI-087 for RA builds on Trubion and Wyeth's clinical experience with Trubion's lead compound, TRU-015, and is based on Trubion's Small Modular ImmunoPharmaceutical (SMIP) technology.

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The Phase 1 SBI-087 dose escalation clinical trial is designed to evaluate the safety, tolerability, pharmacokinetics and pharmacodynamics of a single dose of SBI-087 in patients with RA. Preclinical research suggests that SBI-087, a fully humanized CD20-directed SMIP, has enhanced potency in B-cell depletion in vivo compared with Rituxan. This Phase 1 trial is designed to enroll patients who meet the criteria for RA with Functional Class I, II or III, and who have been diagnosed with RA more than six months prior to the study with onset of RA after the age of 16.

With SBI-087, Trubion's pipeline now includes two differentiated compounds under development for the treatment of autoimmune and inflammatory diseases: TRU-015 and SBI-087. Trubion and Wyeth are leveraging Trubion's SMIP technology to create a portfolio of product candidates with customized mechanisms of action in an effort to optimize patient safety, efficacy and convenience.

"Initiation of the SBI-087 Phase 1 clinical trial marks an important milestone in advancing our pipeline through our collaboration with Wyeth," said Peter Thompson, M.D., FACP, president, CEO and chairman of Trubion. "We believe SBI-087 and TRU-015 together will play an important role in improving patient care and helping us establish category leadership in autoimmune and inflammatory disease markets."

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