PMID- 16551861 OWN - NLM STAT- MEDLINE DCOM- 20061127 LR - 20161124 IS - 1078-0432 (Print) IS - 1078-0432 (Linking) VI - 12 IP - 6 DP - 2006 Mar 15 TI - A phase I trial of vaccination of CA9-derived peptides for HLA-A24-positive patients with cytokine-refractory metastatic renal cell carcinoma. PG - 1768-75 AB - PURPOSE: A phase I peptide vaccination trial was done in patients with progressive cytokine-refractory metastatic renal cell carcinoma (RCC) to assess both the toxicity and capability to induce immune responses of three peptides (CA9p219-227, p288-296, and p323-331) derived from CA9, a tumor-associated antigen ubiquitously expressed in RCC. EXPERIMENTAL DESIGN: Twenty-three patients positive for human leukocyte antigen (HLA)-A24 with histologically confirmed RCC were enrolled. Eligibility included progressive disease after standard cytokine therapy with interleukin-2 and/or IFN-alpha. Patients were vaccinated s.c. with the three peptides emulsified in incomplete Freund's adjuvant at 2-week intervals. Pre- and post-vaccination blood samples were obtained for toxicity assessment and immunologic studies. Patients were monitored for clinical responses on a 3-monthly basis. RESULTS: Vaccinations were well tolerated without any major adverse event. Most of the patients developed peptide-specific CTLs and/or immunoglobulin G reactive to the peptides after the 6th or 9th vaccination, followed by a gradual increase in both CTL frequency and levels of peptide-reactive serum IgG. Three patients with multiple lung metastases showed partial responses with disappearance and shrinking of metastatic lesions. Additionally, stable disease for >6 months was observed in six patients (median duration, 12.2 months). Moreover, the median survival time of all patients who were progressive at trial enrollment after failing immunotherapy was 21.0 months (5-35 months). CONCLUSIONS: These results suggest that vaccination of these peptides is safe and recommended for further trials for HLA-A24-positive metastatic RCC patients. FAU - Uemura, Hirotsugu AU - Uemura H AD - Department of Urology, Kinki University School of Medicine, Osaka, Japan. huemura@med.kindai.ac.jp FAU - Fujimoto, Kiyohide AU - Fujimoto K FAU - Tanaka, Motoyoshi AU - Tanaka M FAU - Yoshikawa, Motoyoshi AU - Yoshikawa M FAU - Hirao, Yoshihiko AU - Hirao Y FAU - Uejima, Shigeya AU - Uejima S FAU - Yoshikawa, Kazuhiro AU - Yoshikawa K FAU - Itoh, Kyogo AU - Itoh K LA - eng PT - Clinical Trial, Phase I PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Clin Cancer Res JT - Clinical cancer research : an official journal of the American Association for Cancer Research JID - 9502500 RN - 0 (Antigens, Neoplasm) RN - 0 (Cancer Vaccines) RN - 0 (Cytokines) RN - 0 (HLA-A Antigens) RN - 0 (HLA-A24 Antigen) RN - 0 (Immunoglobulin G) RN - 0 (Vaccines, Subunit) RN - EC 4.2.1.1 (CA9 protein, human) RN - EC 4.2.1.1 (Carbonic Anhydrase IX) RN - EC 4.2.1.1 (Carbonic Anhydrases) SB - IM MH - Adult MH - Aged MH - Antigens, Neoplasm/*immunology MH - Cancer Vaccines/adverse effects/immunology/*therapeutic use MH - Carbonic Anhydrase IX MH - Carbonic Anhydrases/*immunology MH - Carcinoma, Renal Cell/*drug therapy/immunology/mortality MH - Cytokines/therapeutic use MH - Drug Resistance, Neoplasm MH - Fatigue/chemically induced MH - Female MH - Fever/chemically induced MH - HLA-A Antigens/*immunology MH - HLA-A24 Antigen MH - Humans MH - Immunity, Cellular/drug effects MH - Immunoglobulin G/blood MH - Kidney Neoplasms/*drug therapy/immunology/mortality MH - Male MH - Middle Aged MH - Neoplasm Metastasis MH - Survival Rate MH - T-Lymphocytes, Cytotoxic/drug effects/immunology MH - Treatment Outcome MH - Vaccines, Subunit/adverse effects/immunology/therapeutic use EDAT- 2006/03/23 09:00 MHDA- 2006/12/09 09:00 CRDT- 2006/03/23 09:00 PHST- 2006/03/23 09:00 [pubmed] PHST- 2006/12/09 09:00 [medline] PHST- 2006/03/23 09:00 [entrez] AID - 12/6/1768 [pii] AID - 10.1158/1078-0432.CCR-05-2253 [doi] PST - ppublish SO - Clin Cancer Res. 2006 Mar 15;12(6):1768-75. doi: 10.1158/1078-0432.CCR-05-2253.