CAMBRIDGE, Mass.--(BUSINESS WIRE)--Vertex Pharmaceuticals Incorporated (NASDAQ: VRTX) today announced interim data from two treatment arms of the Phase 2 ZENITH study evaluating an interferon-free (all-oral) treatment regimen of the non-nucleoside polymerase inhibitor VX-222 in combination with INCIVEK ® (telaprevir) tablets and ribavirin in people with genotype 1a or 1b hepatitis C who were new to treatment. Interim data showed that viral loads were below the lower limit of quantification (<25 IU/mL: