Jun Matsumoto, Tatsuaki Takeda, Shiho Sugimoto, Tomonori Sakai, Beatrix Bermudo Loyao, Tsukasa Higashionna, Hirofumi Hamano, Gerard Lee Lo See, Noritaka Ariyoshi, Yoshito Zamami
No head-to-head studies have directly compared differences in adverse events (AEs) associated with carfilzomib, elotuzumab, and ixazomib plus lenalidomide and dexamethasone therapies (KRd, EloRd, and IxaRd, respectively) in patients with multiple myeloma. Here, we comprehensively compare the AE profiles of KRd, EloRd, and IxaRd using data from the World Health Organization global pharmacovigilance database, VigiBase. AE reports related to KRd, EloRd, and IxaRd up to December 2024 were extracted from VigiBase. Disproportionality analyses were performed using reporting odds ratios (RORs) with 95% confidence intervals (CIs) for both the system organ class (SOC) and preferred term (PT) levels. Overall, 3950, 1210, and 3948 reports were extracted for KRd, EloRd, and IxaRd, respectively. KRd showed significant disproportionality signals in four SOCs, including Blood and lymphatic system (ROR [95% CI]: 1.74 [1.44–2.10] vs EloRd and 1.60 [1.42–1.81] vs IxaRd) and Cardiac (1.71 [1.32–2.22] and 2.14 [1.79–2.56]) disorders. Representative PTs included neutropenia and cardiac failure. IxaRd exhibited the broadest AE profile, with significant signals in seven SOCs, notably Gastrointestinal (2.47 [2.18–2.80] vs KRd and 3.05 [2.46–3.77] vs EloRd) and Nervous system (1.52 [1.33–1.74] and 2.82 [2.19–3.62]) disorders. Representative PTs encompassed nausea and peripheral neuropathy. In contrast, EloRd exhibited no SOC with significant signals in comparison with both the other therapies. Distinct AEs were identified with KRd and IxaRd, while EloRd exhibited a relatively narrower AE profile. These findings highlight the importance of considering therapy-specific toxicities when selecting appropriate treatments for patients with multiple myeloma. © 2026 The Authors.
Department of Personalised Medicine and Preventive Healthcare Sciences, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata, Kita-ku, Okayama, 700-8558, Japan; Department of Pharmacy, Okayama University Hospital, 2-5-1 Shikata, Kita-ku, Okayama, 700-8558, Japan; Department of Education and Research Centre for Clinical Pharmacy, Faculty of Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata, Kita-ku, Okayama, 700-8558, Japan; Department of Clinical Pharmacology, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata, Kita-ku, Okayama, 700-8558, Japan; Department of Pharmacy, School of Health Care Professions, University of San Carlos, Talamban, Cebu, Cebu City, 6000, Philippines; Department of Pharmacy, Medical Development Field, Okayama University, 2-5-1 Shikata, Kita-ku, Okayama, 700-8558, Japan
