SAN DIEGO--(BUSINESS WIRE)--Receptos, Inc. announced today that Sheila Gujrathi, M.D. has joined the executive management team as Chief Medical Officer. Dr. Gujrathi will assume leadership of the RPC1063 clinical program, and will also lead expansion of development activities for both the S1P1 agonist portfolio as well as additional assets in the immunology therapeutic area that the company will in-license in accordance with its strategic plan. Receptos is developing RPC1063 as a potential treatment for multiple sclerosis and other immunology indications. RPC1063 is a highly selective sphingosine-1-phosphate receptor 1 (S1P1) agonist that entered a single-ascending and multiple-ascending dose design Phase 1 clinical safety study under a US Investigational New Drug (IND) application in 2011. The Phase 1 study is anticipated to conclude in early 2012, paving the way for a Phase 2 Proof of Concept (PoC) study.