Abstract
Purpose of review
Immune checkpoint inhibitors (ICI) have modified the management of patients with cancer. Their administration is associated with an increased risk of toxicities that can affect every organ. Cardiovascular toxicities, particularly myocarditis, can occur with a low incidence (< 1%) in patients treated with ICI, but with a high fatality rate (30–50%). In this review, we discuss the mechanisms, diagnostic work-up, and management of cardiovascular toxicities associated with ICI.
Recent findings
The main mechanisms of ICI-related myocarditis were first described in 2016 and are due to an infiltrate comprised T cells positive for CD3+, CD4+, and CD8+ and macrophages positive for CD68. The diagnosis of ICI-associated myocarditis remains challenging and is made on the combination of a clinical syndrome, an electrocardiogram (ECG), biomarker data, and imaging criteria. In most clinical scenarios, endomyocardial biopsy now plays a pivotal role, and the limitation of CMR in this context should be recognized. Glucocorticoids (oral or intravenous) are the first-line treatment for myocarditis confirmed by CMR and/or endomyocardial biopsy. The management of steroid-refractory myocarditis relies on the initiation of immunosuppressive therapies (ATG, infliximab, mycophenolate mofetil, and/or abatacept). However, the potential role of these drugs should be confirmed in well-designed prospective trials, as none of these strategies has been thoroughly evaluated prospectively.
Summary
ICI-related myocarditis is an emerging toxicity in patients treated with immunotherapy. The diagnosis should be made promptly since it is associated with a high fatality rate. Corticosteroids are considered as the first-line treatment.
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References and Recommended Reading
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A.A.C. received a research grant from RESICARD (research nurses) and consultant and lecture fees from Amgen, AstraZeneca, Bayer Pharma, Alliance BMS-Pfizer, Novartis, and Sanofi-Aventis. Stéphane Champiat received Honoraria: Amgen, AstraZeneca, BMS, Janssen, MSD, Novartis, and Roche. As part of the Drug Development Department (DITEP) =.Principal/sub-Investigator of Clinical Trials for Abbvie, Adaptimmune, Aduro Biotech, Agios Pharmaceuticals, Amgen, Argen-X Bvba, Arno Therapeutics, Astex Pharmaceuticals, Astra Zeneca Ab, Aveo, Basilea Pharmaceutica International Ltd., Bayer Healthcare Ag, Bbb Technologies Bv, Beigene, Blueprint Medicines, Boehringer Ingelheim, Boston Pharmaceuticals, Bristol Myers Squibb, Ca, Celgene Corporation, Chugai Pharmaceutical Co, Clovis Oncology, Cullinan-Apollo, Daiichi Sankyo, Debiopharm, Eisai, Eisai Limited, Eli Lilly, Exelixis, Forma Therapeutics, Gamamabs, Genentech, GlaxoSmithKline, H3 Biomedicine, Hoffmann La Roche Ag, Imcheck Therapeutics, Innate Pharma, Institut De Recherche Pierre Fabre, Iris Servier, Janssen Cilag, Janssen Research Foundation, Kyowa Kirin Pharm. Dev, Lilly France, Loxo Oncology, Lytix Biopharma As, Medimmune, Menarini Ricerche, Merck Sharp & Dohme Chibret, Merrimack Pharmaceuticals, Merus, Millennium Pharmaceuticals, Molecular Partners Ag, Nanobiotix, Nektar Therapeutics, Novartis Pharma, Octimet Oncology Nv, Oncoethix, Oncopeptides, Orion Pharma, Ose Pharma, Pfizer, Pharma Mar, Pierre Fabre, Medicament, Roche, Sanofi Aventis, Sotio A.S, Syros Pharmaceuticals, Taiho Pharma, Tesaro, Xencor Research Grants from AstraZeneca, BMS, Boehringer Ingelheim, Janssen Cilag, Merck, Novartis, Pfizer, Roche, Sanofi Non-financial support (drug supplied) from AstraZeneca, Bayer, BMS, Boringher Ingelheim, Medimmune, Merck, NH TherAGuiX, Pfizer, and Roche.
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Ederhy, S., Benhamou-Tarallo, I., Chauvet-Droit, M. et al. Cardiotoxicity Related to Immune Checkpoint Inhibitors. Curr Treat Options Cardio Med 23, 4 (2021). https://doi.org/10.1007/s11936-020-00878-y
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DOI: https://doi.org/10.1007/s11936-020-00878-y