Increased cyclin-dependent kinase 5 (CDK5) activity has recently emerged as a contributor to cancer progression. Researchers at the National Cancer Institute (NCI) and at the National Institute of Neurological Disorders and Stroke (NINDS) have shown that TP5, a small peptide inhibitor of CDK5 modified to facilitate passage through the blood brain barrier (BBB), has potential therapeutic benefit in glioblastoma (GBM) and colorectal carcinoma (CRC). NCI is seeking parties interested in co-developing and/or licensing TP5 for its use in the treatment of cancers with aberrant CDK5 expression as a mono-therapy or in an adjuvant setting with current standard-of-care.