Annotation Detail

Information
Associated Genes
PTEN
Associated Variants
PTEN DELETION ( ENST00000371953.8 )
PTEN DELETION ( ENST00000371953.8 )
Associated Disease
Her2-receptor positive breast cancer
Source Database
CIViC Evidence
Description
A large-scale RNAi genetic sereen in HER2 overexpressing breast cancer cell line BT-474 was performed to discover genes whose loss induced trastuzumab resistance. The most prominently enriched gene in trastuzumab resistant populations was PTEN. Subsequent knockdown of PTEN in BT-474 cells increased cell survival when treated with trastuzumab, and growth curves showed partial restoration of proliferation in PTEN knockdown BT-474 cells treated with trastuzumab.
Variant Origin
somatic
Variant Origin
Somatic
Evidence URL
https://civic.genome.wustl.edu/links/evidence_items/1383
Gene URL
https://civic.genome.wustl.edu/links/genes/41
Variant URL
https://civic.genome.wustl.edu/links/variants/214
Rating
2
Evidence Type
Predictive
Disease
Her2-receptor Positive Breast Cancer
Evidence Direction
Supports
Drug
Trastuzumab
Evidence Level
D
Clinical Significance
Resistance
Pubmed
17936563
Drugs
Drug NameSensitivitySupported
TrastuzumabResitance or Non-Reponsetrue