– 98.9% SVR12 achieved following six weeks of therapy for patients with chronic HCV genotypes 1, 2, 4, 5, or 6 –

NEW HAVEN, CT, USA I October 23, 2017 I Achillion Pharmaceuticals, Inc. (Nasdaq:ACHN) reported today Phase 2b data on JNJ-4178, the triple combination consisting of odalasvir, AL-335, simeprevir, following presentations at the 2017 Liver Meeting™ organized by the American Association for the Study Liver Diseases (AASLD), held in Washington D.C., on October 20 — 24, 2017.

SVR12 data from OMEGA-1, a global open-label Phase 2b study of the efficacy and safety of JNJ-4178 in non-cirrhotic patients with HCV genotypes 1, 2, 4, 5 and 6, were presented at the conference by Dr. Stefan Zeuzem, Professor of Medicine and Chief of the Department of Medicine I at the Goethe University Hospital, Frankfurt, Germany.

The results showed that 98.9% (181/183) of patients treated with JNJ-4178 for 6 weeks achieved SVR12, while 97.8% (178/182) of patients treated with JNJ-4178 for 8 weeks achieved SVR12, with both arms meeting the pre-specified endpoint of statistical non-inferiority compared to historic controls. The triple combination was generally well-tolerated in both arms of the study, with the most frequent adverse events being headache and fatigue. Further information on the study can be found at www.clinicaltrials.gov (NCT02765490).

Achillion announced on September 11, 2017, the termination of the worldwide license and collaboration arrangement on hepatitis C with Janssen Pharmaceuticals, Inc. (Janssen), one of the Janssen Pharmaceutical Companies of Johnson & Johnson. The notice followed the decision by Janssen to discontinue the development of the investigational hepatitis C treatment regimen JNJ-4178.

About Achillion Pharmaceuticals

Achillion Pharmaceuticals, Inc. (NASDAQ:ACHN) is a science-driven, patient-focused company seeking to leverage its strengths across the continuum from discovery to commercialization in its goal of providing better treatments for people with serious diseases. The company employs a highly-disciplined discovery and development approach that has allowed it to pursue best-in-class oral antiviral therapy for chronic hepatitis C (HCV) and build a platform of potent and specific complement inhibitors. Achillion is rapidly advancing its efforts to become a fully-integrated pharmaceutical company with a goal of bringing life-saving medicines to patients with rare diseases. More information is available at http://www.achillion.com.

SOURCE: Achillion Pharmaceuticals