Breast cancer xenografts in mice, incl. ER-positive PIK3CA-mutant models and PDX
“These data were confirmed when alpelisib was administered to mice bearing a diverse range of breast cancer tumor xenografts, including the ER-positive breast cancer mouse models with PIK3CA mutations as well as additional breast cancer patient-derived xenograft (PDX) models (Fritsch et al 2014).”
✓ VerifiedFDA multi-discipline review, p. 41Source ↗
Why that model
Not stated in public reviews
Not reported in the public reviews. Reviewers summarise selectively, so this usually means it wasn't discussed publicly, not that it wasn't studied.
Reviewer's view of the efficacy data
FDA: in vitro and in vivo pharmacology provided a scientific basis for alpelisib plus fulvestrant in PIK3CA-mutated HR+/HER2- breast cancer
“Overall, the available in vitro and in vivo pharmacology data provided a scientific basis and mechanism of action of using alpelisib in combination with fulvestrant in HR-positive, HER2-negative advanced breast cancer with a PIK3CA mutation.”
✓ VerifiedFDA multi-discipline review, p. 37Source ↗