Peiwei Zhao, Juan Huang, Huicong Fu, Jiali Xu, Tianhong Li, Xiankai Zhang, Qingjie Meng, Lei Zhang, Li Tan, Wen Zhang, Hebin Chen, Xiaoxia Lu, Yan Ding, Xuelian He
BACKGROUND: Germline heterozygous gain-of-function (GOF) mutations in the PIK3CD gene lead to a rare primary immunodeficiency disease known as activated phosphoinositide 3-kinase (PI3K) δ syndrome type 1(APDS1). Affected patients present a spectrum of clinical manifestations, particularly recurrent respiratory infections and lymphoproliferation, increased levels of serum immunoglobulin (Ig) M, Epstein-Barr virus (EBV) and cytomegalovirus (CMV) viremia. Due to highly heterogeneous phenotypes of APDS1, it is very likely that suspected cases may be misdiagnosed...
January 29, 2024: Pediatric Rheumatology Online Journal