label: X-linked Lymphoproliferative Syndrome 1
label_lc: x-linked lymphoproliferative syndrome 1
description: "An X-linked recessive condition caused by mutation(s) in the SH2D1A gene, encoding SH2 domain-containing protein 1A. It is characterized by a susceptibility to severe EBV infection, acquired hypogammaglobulinemia, hemophagocytic lymphohistiocytosis, and/or lymphoma."