Vertex to conduct two Phase 2 studies of VX-135 in combination with daclatasvir

Vertex Pharmaceuticals Incorporated (Nasdaq: VRTX) today announced it has entered into a non-exclusive agreement with Bristol-Myers Squibb Company (NYSE: BMY) to conduct Phase 2 studies of once-daily all-oral treatment regimens containing Vertex's nucleotide analogue hepatitis C virus (HCV) polymerase inhibitor VX-135 and Bristol-Myers Squibb's NS5A replication complex inhibitor daclatasvir for the treatment of hepatitis C. As part of the agreement, Vertex plans to conduct two Phase 2 studies of the combination, including an initial study in treatment-naïve people with genotype 1 HCV infection planned for the second quarter of 2013. Vertex plans to begin a subsequent study in treatment-naïve people infected with genotype 1, 2 or 3 HCV, including those with cirrhosis, in the second half of 2013, pending data from the initial study.

“These studies with daclatasvir will provide the first opportunity to evaluate VX-135 as part of all-oral regimens in people with multiple hepatitis C genotypes and in people with cirrhosis.”

"With more than 170 million people infected worldwide, there is a critical need for new hepatitis C medicines that can offer people simpler and more tolerable treatment regimens that provide high cure rates," said Robert Kauffman, M.D., Ph.D., Senior Vice President and Chief Medical Officer at Vertex. "These studies with daclatasvir will provide the first opportunity to evaluate VX-135 as part of all-oral regimens in people with multiple hepatitis C genotypes and in people with cirrhosis."

Clinical Development Plans for VX-135 with Daclatasvir

Under the terms of the agreement, Vertex will conduct two Phase 2 studies of VX-135 in combination with daclatasvir. The first study will enroll approximately 20 non-cirrhotic, treatment-naïve people with chronic genotype 1 HCV infection and is expected to begin in the second quarter of 2013. In the second half of 2013, Vertex plans to conduct a subsequent study in approximately 250 treatment-naïve people with chronic genotype 1, 2 or 3 HCV infection, including those with cirrhosis. Each of these studies is expected to evaluate safety, tolerability, pharmacokinetics and viral cure rates (SVR4 and SVR12) of multiple all-oral regimens of VX-135 and daclatasvir dosed once daily, pending regulatory discussions. Vertex will also conduct co-formulation activities to evaluate the potential for development of a once-daily fixed-dose combination regimen. Further clinical development activities beyond the Phase 2 studies are not covered as part of this agreement.