Adverse drug events of immune checkpoint inhibitors - a retrospective, descriptive real-world data analysis

Abstract Aims The objective of this study was to analyze immune-related adverse events (irAEs) in a real-world data sample and examine the differences in incidence between affected organ systems, irAE severity, therapeutic agent, and gender. Methods We retrospectively analyzed all consecutive patien...

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Main Authors: Lauris Annatha Mariam Auch, Chloé Sieber, Dirk Lehnick, Balthasar L. Hug
Format: Article
Language:English
Published: BMC 2025-08-01
Series:BMC Cancer
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Online Access:https://doi.org/10.1186/s12885-025-14733-5
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author Lauris Annatha Mariam Auch
Chloé Sieber
Dirk Lehnick
Balthasar L. Hug
author_facet Lauris Annatha Mariam Auch
Chloé Sieber
Dirk Lehnick
Balthasar L. Hug
author_sort Lauris Annatha Mariam Auch
collection DOAJ
description Abstract Aims The objective of this study was to analyze immune-related adverse events (irAEs) in a real-world data sample and examine the differences in incidence between affected organ systems, irAE severity, therapeutic agent, and gender. Methods We retrospectively analyzed all consecutive patients treated with anti-cytotoxic T-lymphocyte associated protein 4 (CTLA-4) antibodies, anti-programmed death 1 (PD-1) inhibitors, and programmed death-ligand 1 (PD-L1) inhibitors between January 2020 and May 2023 in a tertiary referral center in Switzerland. IrAEs documented in the electronic health records (EHR) were graded according to the Common Terminology Criteria for Adverse Events (CTCAE) and analyzed descriptively. Results Among the 500 patients, 196 (39.2%) were female. Treatments included pembrolizumab (51.2%), atezolizumab (20.2%), nivolumab (14.4%), durvalumab (6.4%), ipilimumab in combination with nivolumab (4.8%), cemiplimab (1.4%), avelumab (1.2%), and ipilimumab (0.4%). N = 216 (43.2%) patients had ≥ 1 irAEs (females: 47.4%; males: 40.5%). Severe (≥ grade 3) irAEs were reported in 13.6% of patients. The following irAE incidences were found: dermatological (15.2%), gastrointestinal (13.0%), endocrine (10.8%), musculoskeletal (4.8%), pulmonary (3.8%), systemic (3.6%), neurological (2.6%), cardiac (1.4%), renal (1.4%), hematological (0.6%), and ocular (0.2%). Conclusion Nearly half of the patients experienced ≥ 1 irAEs, of which one-third severe. Females experienced more irAEs than males, above all due to a higher incidence of grade 1 irAEs. Only about half of the irAEs were reported as coded diagnosis. Further prospective studies on irAEs are warranted using structured documentation.
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spelling doaj-art-e78fa567610e4b1bb7774da015dcc18b2025-08-20T03:46:09ZengBMCBMC Cancer1471-24072025-08-0125111110.1186/s12885-025-14733-5Adverse drug events of immune checkpoint inhibitors - a retrospective, descriptive real-world data analysisLauris Annatha Mariam Auch0Chloé Sieber1Dirk Lehnick2Balthasar L. Hug3Faculty of Health Sciences and Medicine, University of LucerneFaculty of Health Sciences and Medicine, University of LucerneFaculty of Health Sciences and Medicine, University of LucerneFaculty of Health Sciences and Medicine, University of LucerneAbstract Aims The objective of this study was to analyze immune-related adverse events (irAEs) in a real-world data sample and examine the differences in incidence between affected organ systems, irAE severity, therapeutic agent, and gender. Methods We retrospectively analyzed all consecutive patients treated with anti-cytotoxic T-lymphocyte associated protein 4 (CTLA-4) antibodies, anti-programmed death 1 (PD-1) inhibitors, and programmed death-ligand 1 (PD-L1) inhibitors between January 2020 and May 2023 in a tertiary referral center in Switzerland. IrAEs documented in the electronic health records (EHR) were graded according to the Common Terminology Criteria for Adverse Events (CTCAE) and analyzed descriptively. Results Among the 500 patients, 196 (39.2%) were female. Treatments included pembrolizumab (51.2%), atezolizumab (20.2%), nivolumab (14.4%), durvalumab (6.4%), ipilimumab in combination with nivolumab (4.8%), cemiplimab (1.4%), avelumab (1.2%), and ipilimumab (0.4%). N = 216 (43.2%) patients had ≥ 1 irAEs (females: 47.4%; males: 40.5%). Severe (≥ grade 3) irAEs were reported in 13.6% of patients. The following irAE incidences were found: dermatological (15.2%), gastrointestinal (13.0%), endocrine (10.8%), musculoskeletal (4.8%), pulmonary (3.8%), systemic (3.6%), neurological (2.6%), cardiac (1.4%), renal (1.4%), hematological (0.6%), and ocular (0.2%). Conclusion Nearly half of the patients experienced ≥ 1 irAEs, of which one-third severe. Females experienced more irAEs than males, above all due to a higher incidence of grade 1 irAEs. Only about half of the irAEs were reported as coded diagnosis. Further prospective studies on irAEs are warranted using structured documentation.https://doi.org/10.1186/s12885-025-14733-5Immune checkpoint inhibitorsImmune-related adverse eventsAnti-CTLA-4Anti-PD-1Anti-PD-L1Real-world data
spellingShingle Lauris Annatha Mariam Auch
Chloé Sieber
Dirk Lehnick
Balthasar L. Hug
Adverse drug events of immune checkpoint inhibitors - a retrospective, descriptive real-world data analysis
BMC Cancer
Immune checkpoint inhibitors
Immune-related adverse events
Anti-CTLA-4
Anti-PD-1
Anti-PD-L1
Real-world data
title Adverse drug events of immune checkpoint inhibitors - a retrospective, descriptive real-world data analysis
title_full Adverse drug events of immune checkpoint inhibitors - a retrospective, descriptive real-world data analysis
title_fullStr Adverse drug events of immune checkpoint inhibitors - a retrospective, descriptive real-world data analysis
title_full_unstemmed Adverse drug events of immune checkpoint inhibitors - a retrospective, descriptive real-world data analysis
title_short Adverse drug events of immune checkpoint inhibitors - a retrospective, descriptive real-world data analysis
title_sort adverse drug events of immune checkpoint inhibitors a retrospective descriptive real world data analysis
topic Immune checkpoint inhibitors
Immune-related adverse events
Anti-CTLA-4
Anti-PD-1
Anti-PD-L1
Real-world data
url https://doi.org/10.1186/s12885-025-14733-5
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