AUTHOR=Nishikawa Takuro , Tomomasa Dan , Hijikata Atsushi , Kasabata Hiroshi , Okamoto Yasuhiro , Ochs Hans D. , Kanegane Hirokazu TITLE=Case Report: CD40LG Arg203Ile variant underlies atypical phenotype of X-linked hyper IgM syndrome JOURNAL=Frontiers in Immunology VOLUME=Volume 16 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2025.1572791 DOI=10.3389/fimmu.2025.1572791 ISSN=1664-3224