BURLINGTON, N.C.--(BUSINESS WIRE)--Laboratory Corporation of America® Holdings (LabCorp®) (NYSE: LH) announced today the immediate availability of an enhanced version of its HCV GenoSure® NS3/4, a drug resistance test that screens for the Q80K polymorphism. Q80K is a naturally occurring polymorphism that develops in certain strains of HCV, making the virus less susceptible to Janssen Therapeutics’ OLYSIO™ (simeprevir), which was recently approved by the U.S. Food and Drug Administration for the treatment of certain adult patients diagnosed with genotype 1chronic hepatitis C (HCV). In clinical trials, patients with HCV genotype 1 containing the Q80K polymorphism demonstrated significantly lower response rates to treatment with OLYSIO. Approximately one-third of HCV patients have virus with Q80K polymorphism. Given the high frequency of the Q80K polymorphism and its significant impact on OLYSIO’s success rate, it is recommended that patients be screened for the Q80K polymorphism prior to treatment.
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