Annotation Detail

Information
Associated Genes
FBXW7
Associated Variants
FBXW7 LOSS-OF-FUNCTION
FBXW7 LOSS-OF-FUNCTION
Associated Disease
cancer
Source Database
CIViC Evidence
Description
FBXW7 was shown to target mTOR for ubiquitination and degradation. A reciprocal relationship between FBXW7 or PTEN loss was identified in breast cancer tumors and cell lines (mutual exclusivity of these two events). In total only 4 out of 450 tumor and cell line samples had concomitant loss of both genes (p=4.9x10^-7). Cell lines (n=5) with FBXW7 mutations or deletions were significantly sensitive to rapamycin and downregulation of FBXW7 (shRNA) increased the sensitivity to rapamycin. In summary, this evidence suggests that FBXW7 may be a biomarker for cancers sensitivity to inhibitors of the mTOR pathway.
Variant Origin
somatic
Variant Origin
Somatic
Evidence URL
https://civic.genome.wustl.edu/links/evidence_items/1632
Gene URL
https://civic.genome.wustl.edu/links/genes/12903
Variant URL
https://civic.genome.wustl.edu/links/variants/637
Rating
4
Evidence Type
Predictive
Disease
Cancer
Evidence Direction
Supports
Drug
Sirolimus
Evidence Level
D
Clinical Significance
Sensitivity/Response
Pubmed
18787170
Drugs
Drug NameSensitivitySupported
SirolimusSensitivitytrue