The National Institutes of Health (NIH), specifically the National Institute of Allergy and Infectious Diseases (NIAID), intends to award a sole source contract for the procurement of Good Manufacturing Practice (GMP)-manufactured Monoclonal Antibody UB-421, with a requirement of 100 liters. This procurement is critical for an ongoing clinical trial aimed at treating patients with multidrug-resistant HIV-1 infection, utilizing UB-421, which is exclusively manufactured by United BioPharma, Inc., the sole patent holder and provider of the necessary cell line for production. Interested parties who believe they can meet the specifications must submit a capability statement to the primary contact, Hershea Vance, by 3:00 PM EST on September 20, 2024, as the contract is expected to be awarded within 19 days of this notice, with a performance period from September 23, 2024, to September 24, 2025.