PMID- 15378520 OWN - NLM STAT- MEDLINE DCOM- 20050412 LR - 20201215 IS - 0270-4137 (Print) IS - 0270-4137 (Linking) VI - 63 IP - 1 DP - 2005 Apr 1 TI - Immunological evaluation of individualized peptide vaccination with a low dose of estramustine for HLA-A24+ HRPC patients. PG - 1-12 AB - BACKGROUND: The safety, toxicity, and immunological response of individualized peptide vaccination or human leukocyte antigen (HLA)-A24+ hormone refractory prostate cancer (HRPC) patients in combination with a low dose of estramustine were evaluated. METHODS: Sixteen patients with HLA-A24+ HRPC were enrolled in the phase I/II study. Conducted immune monitorings for those patients were peptide-specific cytotoxic T lymphocyte (CTL) precursor analysis by interferon-gamma production and peptide-reactive immunoglobulin G (IgG) by an enzyme-linked immunosorbent assay. Clinical responses and quality of life (QOL) outcomes using a self-reported patient questionnaire were also evaluated. RESULTS: Vaccinations were well tolerated, but all patients developed grade 1 or 2 local redness and swelling at the injection site. There was no significant immunosuppression in most cases when the peptide and a half dose (280 mg/day) of estramustine were administrated. Augmentation of peptide-specific CTL precursors or peptide-specific IgG was observed in 10 of 14 or 7 of 14 patients at 12 weeks (peptide vaccination alone), and in 6 of 8 or 10 of 12 patients at 24 weeks (during the combination therapy), respectively. All 13 patients treated, with the combination therapy, showed a decrease of serum prostate-specific antigen (PSA) level from the baseline, including six patients with a serum PSA level decrease of >or=50%. QOL outcomes were not deteriorated during the treatment. CONCLUSION: These results might encourage the further evaluation of the combination of peptide vaccination and a low dose of estramustine phosphate for HLA-A24+ HRPC patients. CI - Copyright (c) 2004 Wiley-Liss, Inc. FAU - Noguchi, Masanori AU - Noguchi M AD - Department of Urology, Kurume University, Kurume, Japan. noguchi@med.kurume-u.ac.jp FAU - Itoh, Kyogo AU - Itoh K FAU - Yao, Akihisa AU - Yao A FAU - Mine, Takashi AU - Mine T FAU - Yamada, Akira AU - Yamada A FAU - Obata, Yayoi AU - Obata Y FAU - Furuta, Masatoshi AU - Furuta M FAU - Harada, Mamoru AU - Harada M FAU - Suekane, Shigetaka AU - Suekane S FAU - Matsuoka, Kei AU - Matsuoka K LA - eng PT - Clinical Trial PT - Clinical Trial, Phase I PT - Clinical Trial, Phase II PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Prostate JT - The Prostate JID - 8101368 RN - 0 (Antineoplastic Agents, Alkylating) RN - 0 (HLA-A Antigens) RN - 0 (HLA-A24 Antigen) RN - 0 (Vaccines, Subunit) RN - 35LT29625A (Estramustine) SB - IM MH - Aged MH - Antineoplastic Agents, Alkylating/*administration & dosage MH - Combined Modality Therapy MH - Estramustine/*administration & dosage MH - Follow-Up Studies MH - HLA-A Antigens/*immunology MH - HLA-A24 Antigen MH - Humans MH - Immunotherapy MH - Male MH - Middle Aged MH - Prostatic Neoplasms/*drug therapy/mortality MH - Quality of Life MH - Treatment Outcome MH - Vaccines, Subunit/*administration & dosage EDAT- 2004/09/21 05:00 MHDA- 2005/04/13 09:00 CRDT- 2004/09/21 05:00 PHST- 2004/09/21 05:00 [pubmed] PHST- 2005/04/13 09:00 [medline] PHST- 2004/09/21 05:00 [entrez] AID - 10.1002/pros.20157 [doi] PST - ppublish SO - Prostate. 2005 Apr 1;63(1):1-12. doi: 10.1002/pros.20157.