AUTHOR=Drabko Katarzyna , Zarychta Julia , Kowalczyk Adrian , Cienkusz Magdalena TITLE=Case report: Pediatric patient with severe clinical course of CTLA-4 insufficiency treated with HSCT JOURNAL=Frontiers in Immunology VOLUME=15 YEAR=2024 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2024.1484467 DOI=10.3389/fimmu.2024.1484467 ISSN=1664-3224