X4 Pharmaceuticals, Inc., a clinical-stage biopharmaceutical company, focuses on the discovery, development, and commercialization of novel therapeutics for the treatment of primary immune-deficiencies and cancer. Its lead drug candidate is mavorixafor (X4P-001), an oral small molecule antagonist of chemokine receptor CXCR4, which is in Phase III clinical trial for the treatment of patients with warts, hypogammaglobulinemia, infections, and myelokathexis syndrome; Phase Ib clinical trial to treat severe congenital neutropenia and Waldenstrm macroglobulinemia; and Phase IIa clinical trial for the treatment of clear cell renal cell carcinoma. The company is also developing X4P-002 for the treatment of glioblastoma multiforme; and X4P-003 to treat primary immune-deficiencies. It has a license agreement with Abbisko Therapeutics Co., Ltd. to develop, manufacture, and commercialize mavorixafor in combination with checkpoint inhibitors or other agents in oncology indications. The company was