Annotation Detail

Information
Associated Genes
PIK3CA
Associated Variants
PIK3CA MUTATION
PIK3CA MUTATION
Associated Disease
breast cancer
Source Database
CIViC Evidence
Description
Three PIK3CA mutant breast cancer cell lines were rendered resistant to PI3K inhibitors (BYL719 or GDC-0941) by chronic exposure. Co-treatment of all three cell lines with PI3K inhibitor and CDK4/6 inhibitor palbociclib resulted in synergistic reductions in cell viability which were not seen with treatment of either compound alone, and resulted in similar suppression to viability as seen in the respective PI3K inhibitor sensitive parental cell lines.
Variant Origin
somatic
Variant Origin
Somatic
Evidence URL
https://civic.genome.wustl.edu/links/evidence_items/1607
Gene URL
https://civic.genome.wustl.edu/links/genes/37
Variant URL
https://civic.genome.wustl.edu/links/variants/311
Rating
3
Evidence Type
Predictive
Disease
Breast Cancer
Evidence Direction
Supports
Drug
Palbociclib,Phosphatidylinositide 3-Kinase Inhibitor
Evidence Level
D
Clinical Significance
Sensitivity/Response
Pubmed
25002028
Drugs
Drug NameSensitivitySupported
PalbociclibSensitivitytrue
Phosphatidylinositide 3-Kinase InhibitorSensitivitytrue