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 168 metastatic colorectal cancer patients who received first line chemotherapy (5-fluorouracil (5-FU) only, 5-FU + oxaliplatin, 5-FU + irinotecan, or 5-FU + oxaliplatin + irinotecan) alone or with monoclonal antibodies (bevacizumab or cetuximab). It assessed the relationship between KRAS mutation status in primary tumors and post treatment progression free survival (PFS) and overall survival (OS). Of the 168 patients, 106 had wildtype KRAS and 62 had mutations in KRAS—including G12A, G12C, G12D, G12R, G12S, G12V, and G13D. Regardless of first line chemotherapy regimen or use of monoclonal antibody treatment, patients with KRAS-mutated tumors did not have a significantly worse outcome than patients with wtKRAS tumors, as evidenced by non-significant differences in PFS (12.3 vs 11.8 months, respectively) and OS (35.8 and 40.5 months, respectively).
Variant Origin
somatic
Variant Origin
Somatic
Evidence URL
https://civic.genome.wustl.edu/links/evidence_items/6292
Gene URL
https://civic.genome.wustl.edu/links/genes/30
Variant URL
https://civic.genome.wustl.edu/links/variants/77
Rating
3
Evidence Type
Prognostic
Disease
Colorectal Cancer
Evidence Direction
Does Not Support
Evidence Level
B
Clinical Significance
Poor Outcome
Pubmed
19603024
Drugs