RuiYi, Inc. announced today a $15 million Series B financing by existing investors: 5AM Ventures, Versant Ventures, Apposite Capital, SR One, the independent corporate healthcare venture capital fund of GlaxoSmithKline, Merck Serono Ventures, the strategic corporate venture fund of Merck Serono, and Aravis SA. RuiYi has a pipeline of innovative monoclonal antibodies to previously untargeted G protein coupled receptors (GPCRs) for important global, therapeutic needs. The financing will support the continued development of RuiYi’s lead asset, RYI-008, a novel anti-IL-6 monoclonal antibody (mAb), and the discovery and development of new therapeutic mAbs targeting GPCRs, including a first-in-class mAb to cannabinoid receptor 1 (CB-1), a commercially validated but previously intractable drug target. In addition, RuiYi expanded the leadership team, appointing Erik Karrer, Ph.D. as chief scientific officer and Brian Campion, Ph.D. as vice president of business development.