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Activating PIK3CD mutations impair human cytotoxic lymphocyte differentiation and function, and EBV immunity

Abstract

Germline gain-of function (GOF) mutations in PIK3CD, encoding the catalytic p110δ subunit of phosphatidylinositol-3 kinase, result in hyperactivation of the PI3K-AKT-mTOR pathway and underlie a novel inborn error of immunity. Affected individuals exhibit perturbed humoral and cellular immunity, manifesting as recurrent infections, autoimmunity, hepatosplenomegaly, uncontrolled EBV and/or CMV infection, and an increased incidence of B-cell lymphoproliferation and/or lymphoma. Mechanisms underlying disease pathogenesis remain unknown.

Type Journal
Authors Edwards ESJ, Bier J, Cole TS, Wong M, Hsu P, Berglund LJ, Boztug K, Lau A, Gostick E, Price DA, O'Sullivan M, Meyts I, Choo S, Gray P, Holland SM, Deenick EK, Uzel G, Tangye SG
Responsible Garvan Author Professor Stuart Tangye
Publisher Name JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY
Published Date 2019-01-01
Published Volume 143
Published Issue 1
Published Pages 276-291
Status Published in-print
DOI https://doi.org/10.1016/j.jaci.2018.04.030
URL link to publisher's version https://www.ncbi.nlm.nih.gov/pubmed/29800648