PMID- 19789309 OWN - NLM STAT- MEDLINE DCOM- 20091222 LR - 20211020 IS - 1557-3265 (Electronic) IS - 1078-0432 (Print) IS - 1078-0432 (Linking) VI - 15 IP - 19 DP - 2009 Oct 1 TI - Dendritic cell vaccination combined with CTLA4 blockade in patients with metastatic melanoma. PG - 6267-76 LID - 10.1158/1078-0432.CCR-09-1254 [doi] AB - PURPOSE: Tumor antigen-loaded dendritic cells (DC) are believed to activate antitumor immunity by stimulating T cells, and CTL-associated antigen 4 (CTLA4)-blocking antibodies should release a key negative regulatory pathway on T cells. The combination was tested in a phase I clinical trial in patients with advanced melanoma. EXPERIMENTAL DESIGN: Autologous DC were pulsed with MART-1(26-35) peptide and administered with a dose escalation of the CTLA4-blocking antibody tremelimumab. Sixteen patients were accrued to five dose levels. Primary end points were safety and immune effects; clinical efficacy was a secondary end point. RESULTS: Dose-limiting toxicities of grade 3 diarrhea and grade 2 hypophysitis developed in two of three patients receiving tremelimumab at 10 mg/kg monthly. Four patients had an objective tumor response, two partial responses and two complete responses, all melanoma free between 2 and 4 years after study initiation. There was no difference in immune monitoring results between patients with an objective tumor response and those without a response. Exploratory gene expression analysis suggested that immune-related gene signatures, in particular for B-cell function, may be important in predicting response. CONCLUSION: The combination of MART-1 peptide-pulsed DC and tremelimumab results in objective and durable tumor responses at the higher range of the expected response rate with either agent alone. FAU - Ribas, Antoni AU - Ribas A AD - Department of Medicine, Division of Hematology/Oncology, University of California at Los Angeles, Los Angeles, California 90095-1782, USA. aribas@mednet.ucla.edu FAU - Comin-Anduix, Begona AU - Comin-Anduix B FAU - Chmielowski, Bartosz AU - Chmielowski B FAU - Jalil, Jason AU - Jalil J FAU - de la Rocha, Pilar AU - de la Rocha P FAU - McCannel, Tara A AU - McCannel TA FAU - Ochoa, Maria Teresa AU - Ochoa MT FAU - Seja, Elizabeth AU - Seja E FAU - Villanueva, Arturo AU - Villanueva A FAU - Oseguera, Denise K AU - Oseguera DK FAU - Straatsma, Bradley R AU - Straatsma BR FAU - Cochran, Alistair J AU - Cochran AJ FAU - Glaspy, John A AU - Glaspy JA FAU - Hui, Liu AU - Hui L FAU - Marincola, Francesco M AU - Marincola FM FAU - Wang, Ena AU - Wang E FAU - Economou, James S AU - Economou JS FAU - Gomez-Navarro, Jesus AU - Gomez-Navarro J LA - eng GR - CA-16042/CA/NCI NIH HHS/United States GR - R01 CA129816/CA/NCI NIH HHS/United States GR - M01 RR000865/RR/NCRR NIH HHS/United States GR - P50 CA086306/CA/NCI NIH HHS/United States GR - P50 CA086306-100006/CA/NCI NIH HHS/United States GR - M01 RR000865-338786/RR/NCRR NIH HHS/United States GR - M01-RR-0865/RR/NCRR NIH HHS/United States GR - AI-28697/AI/NIAID NIH HHS/United States GR - U54 CA119347/CA/NCI NIH HHS/United States GR - P30 CA016042/CA/NCI NIH HHS/United States GR - P30 AI028697/AI/NIAID NIH HHS/United States PT - Clinical Trial, Phase I PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20090929 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 (Antibodies, Blocking) RN - 0 (Antibodies, Monoclonal) RN - 0 (Antibodies, Monoclonal, Humanized) RN - 0 (Antigens, CD) RN - 0 (Antigens, Neoplasm) RN - 0 (CTLA-4 Antigen) RN - 0 (CTLA4 protein, human) RN - 0 (Cancer Vaccines) RN - 0 (MART-1 Antigen) RN - 0 (MLANA protein, human) RN - 0 (Neoplasm Proteins) RN - 0 (Peptide Fragments) RN - QEN1X95CIX (tremelimumab) SB - IM MH - Adult MH - Aged MH - Antibodies, Blocking/*administration & dosage/adverse effects MH - Antibodies, Monoclonal/administration & dosage/adverse effects MH - Antibodies, Monoclonal, Humanized MH - Antigens, CD/*immunology MH - Antigens, Neoplasm/administration & dosage/chemistry/metabolism MH - Antineoplastic Combined Chemotherapy Protocols/administration & dosage MH - CTLA-4 Antigen MH - Cancer Vaccines/*administration & dosage/adverse effects MH - Combined Modality Therapy MH - Dendritic Cells/immunology/metabolism/*transplantation MH - Dose-Response Relationship, Drug MH - Female MH - Humans MH - Immunotherapy, Adoptive/*methods MH - K562 Cells MH - MART-1 Antigen MH - Male MH - Melanoma/pathology/*therapy MH - Middle Aged MH - Neoplasm Metastasis MH - Neoplasm Proteins/administration & dosage/chemistry/metabolism MH - Peptide Fragments/administration & dosage/metabolism PMC - PMC2765061 MID - NIHMS134485 COIS- Conflict of interest disclosure. Dr. Antoni Ribas has received commercial research grants and honoraria from Pfizer Inc.; Dr. John A. Glaspy has received speaker's bureau/honoraria from Pfizer Inc.; Dr. Jesus Gomez-Navarro is employed by Pfizer Inc. The remaining authors have no conflicts of interest to report. EDAT- 2009/10/01 06:00 MHDA- 2009/12/23 06:00 PMCR- 2010/10/01 CRDT- 2009/10/01 06:00 PHST- 2009/10/01 06:00 [entrez] PHST- 2009/10/01 06:00 [pubmed] PHST- 2009/12/23 06:00 [medline] PHST- 2010/10/01 00:00 [pmc-release] AID - 1078-0432.CCR-09-1254 [pii] AID - 10.1158/1078-0432.CCR-09-1254 [doi] PST - ppublish SO - Clin Cancer Res. 2009 Oct 1;15(19):6267-76. doi: 10.1158/1078-0432.CCR-09-1254. Epub 2009 Sep 29.