John Bencich
Analyst · Ladenburg Thalmann. Sir, your line is now live. Go ahead please
Thanks, Cindy. As you can see, the design of the ORCA-2 trial provides multiple shots on goal as it relates to the primary endpoints being investigated and the ability to have a successful trial result with improved efficacy at 6 weeks of treatment, 12 weeks of treatment or both, which is what we anticipate. We believe offering a beneficial smoking cessation treatment that is half the duration of existing therapies is a key differentiator. And for those patients that need slightly longer treatment duration to stop smoking or to reduce chances of relapse, they would have the option to continue on treatment for another 6 weeks. The confidence that we have in cytisinicline’s ability to help smokers quit, comes not only from our own studies, but from the numerous clinical trials that have evaluated thousands of smokers and have been conducted by external experts in the field of smoking cessation. Most recently, the results of the RAUORA trial that compared cytisinicline to Chantix were presented at the Annual SRNT European Meeting in September. This was the first ever head-to-head study comparing these two treatments and enrolled a total of 679 smokers. The RAUORA study was designed as a non-inferiority trial to demonstrate that cytisinicline quit rates would be no less than 10% lower than the quit rates for Chantix. Results showed that cytisinicline not only met the pre-specified non inferiority endpoint, but was trending towards superiority. The absolute risk difference in the study was 4.29 in favor of cytisinicline, which equates to a 4.29% improvement in quit rates compared to Chantix. More importantly, the relative risk was 1.55, indicating that subjects in the cytisinicline arm were approximately 1.5x more likely to have quit smoking at 6 months compared to subjects who received Chantix. While we did not meet the threshold for superior efficacy versus Chantix, we were encouraged with the trend towards statistical significance, with less than one-third of the target enrollment for the trial. Notably, these efficacy improvements were achieved using the historical 1.5 milligram dose per cytisinicline in the downward titration schedule. As discussed, ORCA-2 is using the higher 3 milligram dose administered on a simplified three times daily schedule, which was the most efficacious treatment arm in our Phase 2b ORCA-1 trial. We are optimistic that the simplified dosing will be more convenient for smokers and potentially result in even better smoking cessation rates than what was observed in RAUORA. Also reported from RAUORA and what we continue to observe with cytisinicline is the favorable side effect profile when compared to Chantix. Subject to treatment with cytisinicline in RAUORA experienced statistically fewer side effects, including significantly less nausea, insomnia and abnormal dreams. We know from patient research and claims data that a majority of Chantix patients do not complete their full course of therapy and the number one reason is due to side effects. In addition to RAUORA, data were also presented at the SRNT meeting that may help explain cytisinicline’s differentiated side effect profile. Research from the University of Cambridge elucidated the potential role of the 5-HT3 receptor activity in the development of Chantix side effects. By comparison to cytisinicline, the study showed that Chantix has a 2,000-greater fold binding affinity to the 5-HT3 receptor, which is believed to be the cause of increased rates of nausea and vomiting that smokers can experience while on Chantix. Overall, we are very pleased with the recent clinical data that has been generated, which continues to support the possibility of cytisinicline having both best in class safety and efficacy. I will now turn the call over to Jerry to discuss the third quarter financial results.