• Garcia BorregaJorgeJKlinik I für Innere Medizin, Hämatologie-Onkologie und Internistische Intensivmedizin, Klinikum der Universität Köln, Kerpener Str. 62, 50937, Köln, Deutschland.Klinik I für Innere Medizin, Centrum für Integrierte Onkologie Aachen Bonn, Katrin Heindel, Yasemin Göreci, Clemens Warnke, Oezguer A Onur, Matthias Kochanek, Natalie Schub, Francis Ayuk, Dominic Wichmann, and Boris Böll.
• Klinik I für Innere Medizin, Hämatologie-Onkologie und Internistische Intensivmedizin, Klinikum der Universität Köln, Kerpener Str. 62, 50937, Köln, Deutschland.
• Internist (Berl). 2021 Jun 1; 62 (6): 611-619.

BackgroundThe transfusion of chimeric antigen receptor (CAR) T‑cells has become established as a new treatment option in oncology; however, this is regularly associated with immune-mediated side effects, which can also run a severe course and necessitate a specific treatment and intensive medical treatment.Material And MethodsA literature review was carried out on CAR T-cell therapy, toxicities and the management of side effects.ResultsThe cytokine release syndrome (CRS) and the immune effector cell-associated neurotoxicity syndrome (ICANS) regularly occur shortly after CAR T-cell treatment. The symptoms of CRS can range from mild flu-like symptoms to multiorgan failure. In addition to mild symptoms, such as disorientation and aphasia, ICANS can also lead to convulsive seizures and brain edema. The management of CRS and ICANS is based on the severity according to the grading of the American Society for Transplantation and Cellular Therapy (ASTCT). Tocilizumab and corticosteroids are recommended for CRS and corticosteroids are used for ICANS. In the further course persisting hypogammaglobulinemia and cytopenia are frequent even months after the initial treatment and promote infections even months after CAR T‑cell therapy.DiscussionPotentially severe complications regularly occur after CAR T-cell therapy. An interdisciplinary cooperation between intensive care physicians, hematologists, neurologists and specialists in other disciplines is of decisive importance for the optimal care of patients after CAR T‑cell therapy.

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