Arizona finalizes health care contract

October 03, 2015

Roche and InterMune will also initiate in the third quarter a Phase 1 trial combining RG7227/ ITMN-191 with low dose ritonavir to examine the virologic effect of ritonavir-boosted RG7227/ ITMN-191 in once-daily and twice-daily regimens in combination with standard dosing of PEGASYS and COPEGUS in patients chronically infected with HCV genotype 1.

This study builds on promising drug-drug interaction data recently generated in healthy volunteers; a low dose of ritonavir significantly improved RG7227/ ITMN-191 AUC and plasma concentrations at later times. There were no remarkable safety findings.

The Phase 1 study will evaluate the safety, tolerability, pharmacokinetics and antiviral activity of once-daily and twice-daily ritonavir-boosted RG7227/ ITMN-191 regimens administered with PEGASYS and ribavirin for 14 days.

Dr. Duff commented, "Combining RG7227/ ITMN-191 with low dose ritonavir has the potential to deliver additional benefits to patients, including the requirement for less frequent dosing and fewer tablets per day. Data generated from this Phase 1 trial may pave the way for larger studies investigating this treatment combination."

RG7227/ ITMN-191 is also being investigated in combination with the NS5B polymerase inhibitor RG7128 in the INFORM-1 study. This innovative study has recently been expanded to examine regimens in which both RG7227/ ITMN-191 and RG7128 are dosed twice daily in treatment-experienced patients. Results from all cohorts of this study will be presented in an oral presentation in Presidential Plenary Session III on the morning of November 3 at the 2009 AASLD meeting. Additional abstracts regarding pharmacokinetic/pharmacodynamics and resistance have been accepted for poster presentation.