X4 Pharmaceuticals
X4 Pharmaceuticals, Inc. is a clinical-stage biopharmaceutical company based in Cambridge, Massachusetts, dedicated to developing innovative therapies for primary immune deficiencies and cancer. The company's lead candidate, mavorixafor, is an oral small molecule antagonist of the chemokine receptor CXCR4, currently undergoing multiple clinical trials. It is in Phase III for the treatment of patients with warts, hypogammaglobulinemia, infections, and myelokathexis syndrome, and in Phase Ib for severe congenital neutropenia and Waldenström macroglobulinemia. Additionally, mavorixafor is being explored in Phase IIa trials for clear cell renal cell carcinoma. X4 Pharmaceuticals is also advancing X4P-002, targeting glioblastoma multiforme, and X4P-003 for primary immune deficiencies. The company has partnered with Abbisko Therapeutics Co., Ltd. to develop mavorixafor in combination with checkpoint inhibitors for oncology applications. Founded in 2014, X4 Pharmaceuticals was previously known as Arsanis, Inc. and rebranded in March 2019.
Arsanis
Acquisition in 2019
Arsanis, Inc. is a clinical-stage biopharmaceutical company based in Waltham, Massachusetts, specializing in monoclonal antibody (mAb) immunotherapies for serious infectious diseases. Founded in 2010, Arsanis develops mAbs targeting various bacterial and viral pathogens, including its lead program ASN100, which is focused on preventing Staphylococcus aureus pneumonia in high-risk, mechanically ventilated patients and is currently in Phase 2 clinical trials. The company's pipeline also includes ASN500, targeting respiratory syncytial virus (RSV), as well as preclinical candidates ASN300 for Klebsiella pneumoniae and ASN200 for Escherichia coli. Additionally, Arsanis operates research and preclinical development efforts in Vienna, Austria, through its subsidiary, Arsanis Biosciences GmbH. The company's advanced understanding of infection pathogenesis and mAb discovery techniques underpins its efforts to tackle significant health challenges posed by infectious diseases.
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