Moraleda, CintaLudwikowska, KamilaGastesi, IratiOkarska-Napierała, MagdalenaEpalza, CristinaParedes Carmona, FernandoRamírez Varela, AndreaKulboka, NataliaKursa, MironTagarro García, AlfredoEt. al.2025-11-182025-11-182025Moraleda, C., Ludwikowska, K., Gastesi, I., Okarska-Napierała, M., Epalza, C., Paredes-Carmona, F., Ramírez Varela, A., Kulboka, N., Kursa, M., Fumadó, V., Martínez-Mejías, A., Domínguez-Rodríguez, S., Mesa-Rubio, M. L., Kuchar, E., Grasa, C., Soriano-Arandes, A., Szenborn, L., Iglesias-Bouzas, M. I., Roche-Gómez, A., … on behalf of the International Working Group on Aneurysms in MIS-C. (2025). Both corticosteroids and intravenous immunoglobulin protect from aneurysms in children with multisystem inflammatory syndrome: A multicenter ambispective study. Pediatric Infectious Disease Journal, 44(12), 1173-1180. https://doi.org/10.1097/INF.00000000000049221532-0987https://hdl.handle.net/11268/16483Multisystem inflammatory syndrome in children (MIS-C) is a post-COVID-19 condition resembling Kawasaki disease, including developing coronary aneurysms. Optimal treatment remains uncertain. This study aims to identify effective therapies for preventing aneurysms in MIS-C and associated risk factors. This multicenter, ambispective study included hospitalized patients 0–18 years old with MIS-C between March 2020 and June 2023 from cohorts in Poland, Spain, Catalonia and Colombia. Logistic regression analyzed aneurysm risk factors. Treatment efficacy was assessed using Kaplan–Meier and Cox proportional hazards models, with post hoc Tukey’s tests for pairwise comparisons.engPediatríaEstudio MulticéntricoCondiciones Patológicas, Signos y Síntomasjournal article10.1097/INF.0000000000004922embargoed accessNiñoMedicina preventivaInvestigación médicaGoal 3: Ensure healthy lives and promote well-being for all at all ages