Annotation Detail

Information
Associated Genes
KRAS
Associated Variants
KRAS G12/G13
KRAS G12/G13
Associated Disease
colorectal cancer
Source Database
CIViC Evidence
Description
This was a retrospective clinical study of 100 metastatic colorectal cancer patients who received FOLFOX (oxaliplatin + 5-fluorouracil + folinic acid) first-line therapy alone or with monoclonal antibodies (bevacizumab or cetuximab). It assessed the relationship between KRAS mutation status in primary tumors and response to oxaliplatin-based first-line therapy, as measured by post treatment PFS. Of 100 patients, 61 had wildtype KRAS and 39 had mutations in KRAS—including G12A, G12C, G12D, G12R, G12S, G12V, and G13D. The study found that patients with KRAS-mutated tumors were not significantly more resistant to oxaliplatin-based first-line therapy than patients with wildtype KRAS, as evidenced by a nonsignificant difference in PFS (11.7 and 11.4 months, respectively).
Variant Origin
somatic
Variant Origin
Somatic
Evidence URL
https://civic.genome.wustl.edu/links/evidence_items/6293
Gene URL
https://civic.genome.wustl.edu/links/genes/30
Variant URL
https://civic.genome.wustl.edu/links/variants/77
Rating
3
Evidence Type
Predictive
Disease
Colorectal Cancer
Evidence Direction
Does Not Support
Drug
Oxaliplatin
Evidence Level
B
Clinical Significance
Resistance
Pubmed
19603024
Drugs
Drug NameSensitivitySupported
OxaliplatinResitance or Non-Reponsefalse