Quest Diagnostics Introduces First Comprehensive Laboratory Test To Analyze KRAS, NRAS, And BRAF Gene Mutations In Reflex Testing Service
Quest Diagnostics Incorporated (NYSE: DGX), the world"s leading cancer diagnostics company, today launched the EGFR Pathway test (KRAS with reflex to NRAS, BRAF), the first laboratory-developed test from a national commercial reference laboratory for comprehensively identifying, in a single reflex test offering, genetic mutations in the KRAS, NRAS and BRAFL genes. The test is designed to aid the identification of the roughly half of all metastatic colorectal cancer (mCRC) patients who, because of certain mutations of the epidermal growth factor receptor (EGFR) pathway, are believed to be unresponsive to anti-EGFR cancer therapies for mCRC. While some commercial laboratory tests for predicting anti-EGFR response analyze certain mutations of the KRAS and BRAF genes, such as codons 12 and 13 of KRAS, the Quest Diagnostics test detects mutations in codons 12, 13 and 61 of both the KRAS and NRAS genes and mutations in exons 11, 12, and 15 of the BRAF gene, in a sequential reflex manner.
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