RAPT Therapeutics, Inc. is a clinical-stage immunology-based biopharmaceutical company. The Company is focused on discovering, developing and commercializing oral small molecule therapies for patients with significant unmet needs in inflammatory diseases and oncology. Utilizing its drug discovery and development engine, it develops selective small molecules designed to modulate the critical immune responses underlying these diseases. Its lead inflammation drug candidate, zelnecirnon (RPT193), and its lead oncology drug candidate, tivumecirnon (FLX475), each target C-C motif chemokine receptor 4 (CCR4), a drug target that potentially has broad applicability in inflammatory diseases and oncology. Its inflammation drug candidate, zelnecirnon, is designed to selectively inhibit the migration of type 2 T helper cells into inflamed tissues. Its oncology drug candidate, tivumecirnon, is designed to selectively inhibit the migration of immunosuppressive regulatory T cells into tumors.