Molecular and Functional Characterization of Three Different Postzygotic Mutations in PIK3CA-Related Overgrowth Spectrum (PROS) Patients: Effects on PI3K/AKT/mTOR Signaling and Sensitivity to PIK3 Inhibitors
[Paper-level Aggregated] PMCID: PMC4411002
Evidence Type(s): Oncogenic
Summary: Mutation: c.241 G>A; p.E81K | Summary: The mutation c.241 G>A [p.E81K] in PIK3CA is identified as a somatic variant contributing to tumor development or progression, as it was detected in various tissues of the proband but not in the blood or parents. Its presence in tumor biopsies further suggests it contributes to tumor development or progression.
Evidence Type: Oncogenic Mutation: c.3140 A>G [p.H1047R] | Summary: The c.3140 A>G [p.H1047R] mutation was identified in primary fibroblasts and is associated with tumor development in patients with FAO.
Evidence Type: Oncogenic Mutation: c.3140 A>T [p.H1047L] | Summary: The c.3140 A>T [p.H1047L] mutation was detected in a tissue biopsy and is implicated in tumor progression in the context of FAO.
Gene→Variant (gene-first): PIK3CA(5290):c.241 G>A PIK3CA(5290):p.E81K NA:c.3140 A>G [p.H1047R] NA:c.3140 A>T [p.H1047L]
Genes: PIK3CA(5290) NA
Variants: c.241 G>A p.E81K c.3140 A>G [p.H1047R] c.3140 A>T [p.H1047L]