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Di Giacomo AM, Lahn M, Eggermont AM, Fox B, Ibrahim R, Sharma P, Allison JP, Maio M. The future of targeting cytotoxic T-lymphocyte-associated protein-4: Is there a role? Eur J Cancer 2024; 198:113501. [PMID: 38169219 DOI: 10.1016/j.ejca.2023.113501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 12/13/2023] [Indexed: 01/05/2024]
Abstract
The 2022 yearly Think Tank Meeting in Siena, Tuscany (Italy), organized by the Italian Network for Tumor Biotherapy (NIBIT) Foundation, the Parker Institute for Cancer Immunotherapy and the World Immunotherapy Council, included a focus on the future of integrating and expanding the use of targeting cytotoxic T-lymphocyte-associated protein 4 (CTLA-4). The conference members exchanged their views on the lessons from targeting CTLA-4 and compared the effect to the impact of blocking Programmed cell death protein 1 (PD1) or its ligand (PDL1). The increasing experience with both therapeutic approaches and their combination suggests that targeting CTLA-4 may lead to more durable responses for a sizeable proportion of patients, though the specific mechanism is not entirely understood. Overcoming toxicity of blocking CTLA-4 is currently being addressed with different doses and dose regimens, especially when combined with PD1/PDL1 blocking antibodies. Novel therapeutics targeting CTLA-4 hold the promise to reduce toxicities and thus allow different combination strategies in the future. On the whole, the consent was that targeting CTLA-4 remains an important strategy to improve the efficacy of cancer immunotherapies.
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Affiliation(s)
- Anna Maria Di Giacomo
- University of Siena, Siena, Italy; Center for Immuno-Oncology. University Hospital of Siena, Viale Bracci, 16, Siena, Italy; NIBIT Foundation Onlus, Italy
| | - Michael Lahn
- IOnctura SA, Avenue Secheron 15, Geneva, Switzerland
| | - Alexander Mm Eggermont
- Princess Máxima Center and the University Medical Center Utrecht, Heidelberglaan 25, 3584 Utrecht, the Netherlands; Comprehensive Cancer Center Munich of the Technical University Munich and the Ludwig Maximiliaan University, Munich, Germany
| | - Bernard Fox
- Earle A. Chiles Research Institute at the Robert W. Franz Cancer Center, 4805 NE Glisan St. Suite 2N35 Portland, OR 97213, USA
| | - Ramy Ibrahim
- Parker Institute for Cancer Immunotherapy, 1 Letterman Drive, D3500, San Francisco, CA, USA
| | - Padmanee Sharma
- Department of Genitourinary Medical Oncology, Division of Cancer Medicine, MD Anderson, 1515 Holcombe Blvd, Houston, Texas 77030, USA
| | - James P Allison
- James P Allison Institute, MD Anderson, 1515 Holcombe Blvd, Texas 77030, USA
| | - Michele Maio
- University of Siena, Siena, Italy; Center for Immuno-Oncology. University Hospital of Siena, Viale Bracci, 16, Siena, Italy; NIBIT Foundation Onlus, Italy.
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