NIDA/NIH intends to issue a non-competitive sole-source modification to an existing single-award contract with Virginia Commonwealth University for the Preclinical Medications Discovery and Abuse Liability Testing for NIDA program. The modification would extend the period of performance by 12 months through February 21, 2027, with all other terms and conditions unchanged. The extension is intended to continue ongoing research and prevent delays or disruption to development of therapeutics for ongoing and upcoming preclinical and clinical trials while a new contract is planned and competed. This is not a request for competitive proposals, but interested responsible parties may submit capability information for the Government’s consideration in determining whether to proceed non-competitively or conduct a competitive procurement.