Annotation Detail

Information
Associated Genes
KRAS
Associated Variants
KRAS EXON 2 MUTATION
KRAS EXON 2 MUTATION
Associated Disease
colorectal cancer
Source Database
CIViC Evidence
Description
KRAS mutation status was assessed in 394 tumor samples from colorectal cancer patients who were randomly assigned to receive cetuximab plus best supportive care or best supportive care alone. 42% of the tumors evaluated had at least one mutation in exon 2. Patients with a colorectal tumor bearing mutated K-ras did not benefit from cetuximab, whereas patients with a tumor bearing wild-type K-ras did benefit from cetuximab. The effectiveness of cetuximab was significantly associated with K-ras mutation status (P=0.01 for overall survival and P<0.001 for progression-free survival). In patients with wild-type K-ras tumors, treatment with cetuximab as compared with supportive care alone significantly improved overall survival. The related clinical trial ID is NCT00079066.
Variant Origin
somatic
Variant Origin
Somatic
Evidence URL
https://civic.genome.wustl.edu/links/evidence_items/993
Gene URL
https://civic.genome.wustl.edu/links/genes/30
Variant URL
https://civic.genome.wustl.edu/links/variants/75
Rating
5
Evidence Type
Predictive
Disease
Colorectal Cancer
Evidence Direction
Supports
Drug
Cetuximab
Evidence Level
A
Clinical Significance
Resistance
Pubmed
18946061
Drugs
Drug NameSensitivitySupported
CetuximabResitance or Non-Reponsetrue