RAPT Therapeutics, Inc. is a clinical-stage immunology-based biopharmaceutical company. The Company 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.