Quest Diagnostics Inc on Tuesday became the largest U.S. company to start offering gene-based tests for inherited forms of breast cancer since the U.S. Supreme Court ended Myriad Genetics Inc’s monopoly on the tests for specific gene mutations.
Quest, the largest U.S. medical testing company by revenue, said its BRCAvantage tests will search for mutations in the BRCA1 and BRCA2 genes, which dramatically increase a woman’s risk of developing breast and ovarian cancers.
After a long legal battle, the U.S. Supreme Court in June ruled that naturally occurring human genes could not be patented, effectively ending Myriad’s stranglehold on the market for BRCA testing.
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