Regulus Therapeutics Inc. (NASDAQ: RGLS) today announced top-line results from the primary endpoint analysis of one of the company's ongoing Phase II studies of RG-101 for the treatment of Hepatitis C Virus infection (HCV). The study was designed to evaluate a shortened, four-week treatment regimen containing a subcutaneous administration of 2 mg/kg of RG-101 at Day 1 and Day 29, in combination with 4 weeks of once/daily approved anti-viral agents Harvoni®, Olysio®, or Daklinza™. The study enrolled 79 treatment naïve genotype 1 and 4 HCV patients (Harvoni® arm, n=27, Olysio® arm, n=27, Daklinza™ arm, n=25). The primary endpoint of the study is virologic response 12 weeks following conclusion of treatment.
*One patient missed the Week 12 visit. Viral load results for this patient at Week 8 and 16 were collected and indicate that the patient was a responder at both time points.
The results from this interim analysis demonstrate significant virologic response through 24 weeks of follow-up. RG-101 plus Harvoni continues to demonstrate 100% response rates. As previously reported, the combination of RG-101 plus either Olysio or Daklinza monotherapies have seen small numbers of viral relapse. The results reported today include four new relapses: two in the Olysio arm (weeks 20 and 32) and two in the Daklinza arm (weeks 12 and 24). RG-101 in combination with four weeks of oral DAA therapy has been generally well tolerated with the majority of adverse events considered mild or moderate, and with no study discontinuations. Commonly reported adverse events (AEs) included fatigue, headache, and injection site reactions.
"These data strengthen our conviction in the clinical utility of RG-101 to shorten oral HCV treatment regimens to four weeks or less. We are very encouraged by the consistent trend in safety and efficacy, which positions RG-101 to play an important role in advancing the current treatment options for HCV patients worldwide," said Paul Grint, M.D., President and CEO of Regulus.
*One patient missed the Week 12 visit. Viral load results for this patient at Week 8 and 16 were collected and indicate that the patient was a responder at both time points.
The results from this interim analysis demonstrate significant virologic response through 24 weeks of follow-up. RG-101 plus Harvoni continues to demonstrate 100% response rates. As previously reported, the combination of RG-101 plus either Olysio or Daklinza monotherapies have seen small numbers of viral relapse. The results reported today include four new relapses: two in the Olysio arm (weeks 20 and 32) and two in the Daklinza arm (weeks 12 and 24). RG-101 in combination with four weeks of oral DAA therapy has been generally well tolerated with the majority of adverse events considered mild or moderate, and with no study discontinuations. Commonly reported adverse events (AEs) included fatigue, headache, and injection site reactions.
"These data strengthen our conviction in the clinical utility of RG-101 to shorten oral HCV treatment regimens to four weeks or less. We are very encouraged by the consistent trend in safety and efficacy, which positions RG-101 to play an important role in advancing the current treatment options for HCV patients worldwide," said Paul Grint, M.D., President and CEO of Regulus.
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