NCI Drug Dictionary
The NCI Drug Dictionary contains technical definitions and synonyms for drugs/agents used to treat patients with cancer or conditions related to cancer. Each drug entry includes links to check for clinical trials listed in NCI's List of Cancer Clinical Trials.
- PR1 leukemia peptide vaccine
A cancer vaccine containing PR1, a 9 amino-acid human leukocyte antigen (HLA)-A2 restricted peptide derived from proteinase 3, with potential immunotherapeutic activity. Vaccination with PR1 leukemia peptide vaccine may stimulate the host immune system to mount a cytotoxic T lymphocyte (CTL) response against tumor cells expressing proteinase 3, resulting in tumor cell lysis. Often overexpressed in leukemic cells, proteinase 3 is a serine proteinase that activates progelatinase A and is involved in angiogenesis and metastasis. Check for active clinical trials using this agent. (NCI Thesaurus)
Synonym: proteinase 3 PR1 peptide Abbreviation: PR1 vac