CRC, Colorectal cancer, EGFR, Epidermal growth factor receptor, Cell free DNA, cfDNA, cell-free DNA, circulating tumor DNA, liquid biopsy, KRAS WT, KRAS codon 12, KRAS codon 13, KRAS codon 61, KRAS codon 146, Circulating tumor cells, KRAS, RAS
As an alternative to invasive tissue biopsies for the determination of KRAS 12, 13, 61,146 (G12A, G12C, G12D, G12R, G12S, G12V, G13D, Q61K, Q61L, Q61R, Q61H, and A146T) mutation status
Selection of patients with colorectal cancer who are most likely to benefit from epidermal growth factor receptor (EGFR)-targeted therapies
GENETICS TEST INFORMATION:This test evaluates cell-free DNA (cfDNA) in the peripheral blood for the presence of KRAS mutations at codons 12, 13, 61, and 146 (G12A, G12C, G12D, G12R, G12S, G12V, G13D, Q61K, Q61L, Q61R, Q61H, and A146T) in patients with colorectal cancer and can be used to assess eligibility for targeted therapies.
This test is not validated for serial monitoring of patients with cancer. This test is also not intended as a screening test to identify cancer.
HIGHLIGHTS:This test provides rapid detection of KRAS mutations in colorectal cancer patients as an alternative for KRAS analysis of tissue.
Current data suggests that the efficacy of epidermal growth factor receptor (EGFR)-targeted therapy in colorectal cancer patients is limited to patients whose tumors do not harbor mutations in the KRAS gene.