PIK3R1 (Phosphoinositide-3-Kinase Regulatory Subunit 1) is a Protein Coding gene. Diseases associated with PIK3R1 include?Short Syndrome?and?Agammaglobulinemia 7, Autosomal Recessive. Among its related pathways are?4-1BB Pathway?and?E-cadherin signaling in keratinocytes.?