. "C2797"^^ . . "Pharmacologic Substance"^^ . "Amino Acid, Peptide, or Protein"^^ . "Proteinase 3:PR1 Peptide"^^ . "See 'PR1 Leukemia Peptide Vaccine'"^^ . "Chemicals_and_Drugs_Kind"^^ . . "Proteinase 3:PR1 Peptide"^^ . "Retired_Concept"^^ . "Proteinase 3:PR1 PeptidePTNCI" . "A synthetic HLA-A2-restricted nonapeptide derived from proteinase 3 with potential use in cancer immunotherapy. Cytotoxic T lymphocytes (CTL) primed with proteinase 3 PR1 peptide attack leukemic cells that express proteinase 3 aberrantly. Proteinase 3 is a serine proteinase that activates progelatinase A and is involved in metastasis and angiogenesis. (NCI04)NCI" . .