Cited by 591Cancer Immunotherapy and BiomarkersImmunotherapy and Immune ResponsesCutaneous Melanoma Detection and Management

Antitumor Activity in Melanoma and Anti-Self Responses in a Phase I Trial With the Anti-Cytotoxic T Lymphocyte–Associated Antigen 4 Monoclonal Antibody CP-675,206

Ribas, Antoni, Camacho, Luis H., Lopez-Berestein, Gabriel, Pavlov, Dmitri, Bulanhagui, Cecile A., Millham, Robert, Comin-Anduix, Begoña, Reuben, James M. +5 more·2005·Journal of Clinical Oncology

Abstract

Purpose: Cytotoxic T lymphocyte–associated antigen 4 (CTLA4) blockade with CP-675,206, a fully human anti-CTLA4 monoclonal antibody, may break peripheral immunologic tolerance leading to effective immune responses to cancer in humans. A phase I trial was conducted to test the safety of CP-675,206. Patients and Methods: Thirty-nine patients with solid malignancies (melanoma, n = 34; renal cell, n = 4; colon, n = 1) received an intravenous (IV) infusion of CP-675,206 at seven dose levels. The primary objective was to determine the maximum-tolerated dose and the recommended phase II dose. Results: Dose-limiting toxicities and autoimmune phenomena included diarrhea, dermatitis, vitiligo, panhypopituitarism and hyperthyroidism. Two patients experienced complete responses (maintained for 34+ and 25+ months), and there were two partial responses (26+ and 25+ months) among 29 patients with measurable melanoma. There have been no relapses thus far after objective response to therapy. Four other patients had stable disease at end of study evaluation (16, 7, 7, and 4 months). Additionally, five patients had extended periods without disease progression (36+, 35+, 26+, 24+, and 23+ months) after local treatment of progressive metastases. Longer systemic exposure to CP-675,206 achieved in higher dose cohorts predicted for a higher probability of response. Conclusion: CP-675,206 can be administered safely to humans as a single IV dose up to 15 mg/kg, resulting in breaking of peripheral immune tolerance to self-tissues and antitumor activity in melanoma.

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Crossref · 10.1200/jco.2005.01.109

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Authors
Ribas, A., Camacho, L. H., Lopez-Berestein, G., Pavlov, D., Bulanhagui, C. A., Millham, R., Comin-Anduix, B., Reuben, J. M., Seja, E., Parker, C. A., Sharma, A., Glaspy, J. A., & Gomez-Navarro, J.
Affiliations
  • The University of Texas MD Anderson Cancer Center (US)
  • From the Departments of Medicine, Division of Hematology/Oncology; Surgery, Division of Surgical Oncology and UCLA Jonsson Comprehensive Cancer Center, University of California at Los Angeles, Los Angeles, CA; Departments of Experimental Therapeutics, Melanoma Medical Oncology and Hematopathology, The University of Texas M.D. Anderson Cancer Center, Houston, TX; and Pfizer Global Research and Development, Groton-New London, CT
Venue
Journal of Clinical Oncology
Published
2005-12-10
Volume
23
Issue
35
Pages
8968-8977
ISSN
  • 0732-183X (ISSN-L)
  • 1527-7755
OpenAlex
W2163184777
Cited by
591
References
31
Citations by year
2026: 4 · 2025: 1 · 2024: 11 · 2023: 18 · 2022: 19 · 2021: 21 · 2020: 24 · 2019: 29 · 2018: 24 · 2017: 32 · 2016: 33 · 2015: 29 · 2014: 25 · 2013: 38 · 2012: 27
FWCI
22.08
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Clinical Oncology (publishedVersion)
  • PubMed (publishedVersion)
Funders
American Society of Clinical Oncology
Topics
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
  • Health Sciences › Medicine › Oncology › Cutaneous Melanoma Detection and Management
Keywords
CTLA-4 blockade, melanoma, antitumor immunity, peripheral tolerance, autoimmune adverse events, maximum tolerated dose, dose-limiting toxicity, complete response, renal cell carcinoma, colon cancer, immunotherapy safety
MeSH terms
Adult, Aged, Antibodies, Monoclonal, Antibodies, Neoplasm, Antigens, Differentiation, Antigens, Neoplasm, Autoimmune Diseases, Colonic Neoplasms, Female, Humans, Immune Tolerance, Immunotherapy, Infusions, Intravenous, Kidney Neoplasms, Male, Melanoma, Middle Aged, Neoplasm Proteins, Neoplasms, Regression Analysis, Antigens, CD, T-Lymphocyte Subsets, Treatment Outcome, Antibodies, Blocking, Cancer Vaccines, MART-1 Antigen, CTLA-4 Antigen

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