AUTHOR=Wu Xiaoqi , Zhang Jingyuan , Shen Min TITLE=Case Report: de novo in-frame deletion in PLCG2 gene: a case report of B-cell lymphopenia, pulmonary bullae, and cutis laxa JOURNAL=Frontiers in Immunology VOLUME=16 YEAR=2025 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2025.1556372 DOI=10.3389/fimmu.2025.1556372 ISSN=1664-3224