part of common variable immune deficiency (CVID). However, next-generation sequencing
defined APDS as a distinct disease in which the mechanism of hyperactive signaling and
disturbed immunological response was first described in 2013. 2 The PI3K that is
responsible for the clinical syndrome of APDS is a lipid kinase heterodimer that is a
combination of a catalytic subunit p110 and a regulatory subunit p85. These 2 subunits …