Research Support, Non-U.S. Gov't Journal Article Case Reports 67763-96-6 B cell defect Cytokines FOXP3 FOXP3 protein, human Forkhead Transcription Factors IL2RA protein, human Immune-dysregulation Insulin-Like Growth Factor I Interleukin-2 Receptor alpha Subunit Letter NF-kappa B p52 Subunit NFKB2 protein, human NFkB2 RNA, Messenger Receptors, Interleukin-2 Regulatory T cells (Treg) STAT5 STAT5 Transcription Factor STAT5A STAT5A protein, human STAT5B protein, human T cell defect T cell development T cell receptor excision circles TREC Toxoplasmosis