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 111 full-time employees. The company went IPO on 2019-10-31. The firm is focused on discovering, developing and commercializing oral small molecule therapies for patients with unmet needs in inflammatory diseases and oncology. Utilizing its drug discovery and development engine, the Company develops selective small molecules that are designed to modulate the critical immune responses underlying these diseases. Its two lead drug candidates each target C-C motif chemokine receptor 4 (CCR4). Its inflammation drug candidate, RPT193, is designed to selectively inhibit the migration of type 2 T helper cells (Th2 cells) into inflamed tissues. Its lead oncology drug candidate, FLX475, is designed to selectively inhibit the migration of immunosuppressive regulatory T cells (Treg) into tumors. In addition, RPT193 has clinical translatability in a variety of inflammatory diseases beyond atopic dermatitis (AD), including allergic asthma and chronic rhinosinusitis.