Vertex reports results from Phase 3 ILLUMINATE study of telaprevir-based therapy for hepatitis C

Vertex Pharmaceuticals Incorporated (Nasdaq: VRTX) today announced results from the Phase 3 ILLUMINATE study, which was designed to evaluate whether there was any benefit to extending therapy from 24 to 48 weeks in people whose hepatitis C virus (HCV) was undetectable at weeks 4 and 12 of treatment (extended rapid viral response or eRVR). People in the trial who met these eRVR criteria and who remained on treatment were then randomized at week 20 to receive 24 or 48 weeks of total treatment. People who did not meet these criteria were assigned to 48 weeks of pegylated-interferon and ribavirin therapy.

“Patients who had a rapid response to telaprevir-based regimens at weeks 4 and 12 had a high likelihood of achieving a cure with 24 weeks of total treatment, which may provide important information to motivate people to continue therapy.”

Sustained viral response (SVR or viral cure) rates of 92% and 88% were observed in the randomized 24 and 48-week telaprevir-based treatment groups, respectively. 72% of all 540 people treated with telaprevir in the study achieved a viral cure. The safety and tolerability profile of the telaprevir-based regimen was consistent with results reported previously from the pivotal Phase 3 ADVANCE study.

"The viral cure rates seen in ILLUMINATE showed that there was no benefit to extending telaprevir-based therapy to 48 weeks for the majority of people," said Kenneth Sherman, M.D., Ph.D., Professor of Medicine at the University of Cincinnati College of Medicine, Director of the Division of Digestive Diseases for UC Health and Principal Investigator of the trial. "Patients who had a rapid response to telaprevir-based regimens at weeks 4 and 12 had a high likelihood of achieving a cure with 24 weeks of total treatment, which may provide important information to motivate people to continue therapy."

"Data from ILLUMINATE and ADVANCE support our belief that the use of 24-week telaprevir-based therapy within a response-guided regimen may provide an important future treatment option for people with hepatitis C," said Robert Kauffman, M.D., Ph.D., Senior Vice President and Chief Medical Officer for Vertex.

Telaprevir is an investigational, oral inhibitor of HCV protease, an enzyme essential for viral replication, and is being developed by Vertex Pharmaceuticals in collaboration with Tibotec Pharmaceuticals and Mitsubishi Tanabe Pharma. Results from the ILLUMINATE study are expected to supplement data obtained from ADVANCE and REALIZE - the two pivotal Phase 3 studies of telaprevir - as part of a New Drug Application submission to the U.S. Food and Drug Administration planned for the fourth quarter of 2010.

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