Oncogenic mutations of PIK3CA lead to increased membrane recruitment driven by reorientation of the ABD, p85 and C-terminus
[Paper-level Aggregated] PMCID: PMC9837058
Evidence Type(s): Oncogenic, Functional, Predictive
Justification: Oncogenic: The text discusses multiple mutations (e.g., H1047R, G1049R, M1043L, N1068fs) that are frequently observed in cancer and describes their role in activating the PI3K pathway, indicating their oncogenic potential. Functional: The evidence describes how specific mutations (H1047R, G1049R, M1043L) lead to increased ATPase activity and enhanced membrane binding, demonstrating their functional impact on the PI3K enzyme activity. Predictive: The identification of specific mutations associated with increased membrane binding and PI3K activity suggests that these mutations could be used to predict the behavior of tumors and their response to therapies targeting the PI3K pathway.
Gene→Variant (gene-first): PIK3CA(5290):D915N PIK3CA(5290):E726K PIK3CA(5290):G1049R PIK3CA(5290):H1047R PIK3CA(5290):H1047R/L PIK3CA(5290):M1043L PIK3CA(5290):M1043L/I PIK3CA(5290):N1044K PIK3CA(5290):N1068fs PIK3CA(5290):M1043I/L PIK3CA(5290):G106V PIK3CA(5290):G118D PIK3CA(5290):N345K PIK3CA(5290):His1047 PIK3CA(5290):Met1043
Genes: PIK3CA(5290)
Variants: D915N E726K G1049R H1047R H1047R/L M1043L M1043L/I N1044K N1068fs M1043I/L G106V G118D N345K His1047 Met1043