BRIDGEWATER, N.J.--(BUSINESS WIRE)--Enzon Pharmaceuticals, Inc. (Nasdaq: ENZN) today announced the U.S. Food and Drug Administration (FDA) completed its review of the Company’s Investigational New Drug (IND) application for the use of recombinant human Mannose-Binding Lectin (rhMBL) for the prevention and treatment of severe infections in patients with low levels of MBL undergoing liver transplant treatment.