Annotation Detail

Information
Associated Genes
PIK3CA
Associated Variants
PIK3CA MUTATION
PIK3CA MUTATION
Associated Disease
breast cancer
Source Database
CIViC Evidence
Description
In a phase 3 trial, patients with hormone receptor positive, HER2 receptor negative breast were allocated to alpelisib plus fulvestrant or placebo plus fulvestrant. Patients were enrolled into two cohorts on the basis of tumor-tissue PIK3CA mutation status. In the cohort of patients with PIK3CA-mutated cancer, PFS was 11 months in the alpelisib-fulvestrant group, as compared with 5.7 months in the placebo-fulvestrant group (HR 0.65, p<0.001). In the cohort without PIK3CA-mutated cancer, the HR was 0.85.
Variant Origin
somatic
Variant Origin
Somatic
Evidence URL
https://civic.genome.wustl.edu/links/evidence_items/7313
Gene URL
https://civic.genome.wustl.edu/links/genes/37
Variant URL
https://civic.genome.wustl.edu/links/variants/311
Rating
5
Evidence Type
Predictive
Disease
Breast Cancer
Evidence Direction
Supports
Drug
Alpelisib,Fulvestrant
Evidence Level
A
Clinical Significance
Sensitivity/Response
Pubmed
31091374
Drugs
Drug NameSensitivitySupported
AlpelisibSensitivitytrue
FulvestrantSensitivitytrue