Rapt Therapeutics, Inc. operates as a clinical stage immunology-based biopharmaceutical company, which engages in the discovery, development, and commercialization of oral small molecule therapies for patients in oncology and inflammatory diseases. The company is headquartered in South San Francisco, California and currently employs 60 full-time employees. The company went IPO on 2019-10-31. The firm is focused on discovering, developing and commercializing therapies for patients living with inflammatory and immunological diseases. Its lead drug candidate, RPT904, is a half-life extended monoclonal antibody (mAb) designed to bind free human immunoglobin E (IgE), which is being developing for the treatment of food allergy, chronic spontaneous urticaria (CSU) and potentially other inflammatory diseases. The Company’s oncology drug candidate, tivumecirnon, is an oral small-molecule C-C motif chemokine receptor 4 (CCR4) antagonist designed to selectively inhibit the migration of immunosuppressive regulatory T cells (Treg) into tumors.