Srdjan Stankovic
Analyst · JPMorgan
Thank you, Michael. I'm extremely pleased with our R&D progress in 2018. Equally, I'm really looking forward to the next several quarters as we will be reporting results from a number of our ongoing late stage clinical trials. Let's start with Slide 14. Pimavanserin is the first-in-class selective seratonine inverse agonist. Antipsychotics were primarily by blocking dopamine and then particularly problematic in Parkinson's patients who suffer from the lack of dopamine. In addition to PDP, pimavanserin has already shown the indication of efficacy in all 4 clinical categories we are pursuing that are currently evaluating in the late stage programs. Furthermore, our expertise in drug development for CNS, we license the rights to trofinetide in August. Trofinetide is a novel synthetic of the amino terminal tripeptide of the IGF-1 insulin like [ph] growth factor. Trofinetide has positive Phase II data in its target indication of Rett syndrome. In total, we have 5 late stage programs that we are advancing this year. On Slide 15, are just the few reasons that near term highlight I wanted to share with you. First, we recently completed our end-of-Phase-II meeting with the FDA to discuss pimavanserin as adjunctive therapy for major depressive disorder. I am happy to report that, as we expected, the FDA agreed that the CLARITY trial would serve as 1 of the 2 pivotal trials for our supplemental NDA submission. As always is the case, the end-of-Phase-II matters are ultimately subject to NDA review. We initiated our Phase III program as planned in the first half of this year. Second, we confirm with the FDA our study design for Phase III trial with trofinetide, which we will initiate in the second half of 2019. And third, we remain on track to announce top line results from our ongoing Phase III ENHANCE trial in schizophrenia inadequate response mediator. Starting with Slide 16, we will now discuss our ongoing programs in a little more detail. Dementia-related psychosis affects about 1.2 million patients in the United States, and has very serious consequences, including repeated hospital stays and early progression to nursing home care, more rapid progression of dementia and an increased risk of morbidity and mortality. There is no FDA-approved treatment for DRP. As highlighted on Slide 17, our program in dementia-related psychosis process is leveraging the benefits we observe in two previous studies. Our PDP pivotal trough study, as well as our Phase II study in Alzheimer's disease psychosis. Following these two studies, we had an end-of-Phase-II meeting with the FDA and agreed on our Phase III plan, and it's represented on the next slide. As a reminder, this development program also received Breakthrough Therapy Designation from FDA. Our Phase III HARMONY study is a relapse prevention study. We have agreements with the FDA that robust results from this single study can serve as the basis for an SNDA submission. We anticipate the final results of this study in 2020, with an interim read in the second half of this year. There are substantial unmet needs today in the treatment of major depressive disorder as outlined here on Slide 19. On the right-hand side are the observed results from our Phase II CLARITY study, testing pimavanserin as an adjunctive therapy for SSRI to SSRI or SNRIs. We have a very promising overall study results. Our primary end point improvement in the 17-item Hamilton Depression Rating Scale was achieved with the P-value of 0.039. Our key secondary end point, improvement in the disability scale, was achieved through the p-value of 0.004. And it's well known that disability represents a significant burden for patients with depression. We also observed positive results in 7 additional prespecified secondary end points. Our results were very impressive given the high unmet need that exist in the treatment of MDD today. We believe these results are clinically and commercially meaningful as we seek to develop pimavanserin as a potential best-in-class treatment for adjunctive MDD. In stage 1 of the CLARITY study, where all study patients are NOI, we observed unequivocal efficacy result and achieved our primary endpoint, shown here on Slide 20, with the p-value of 0.0003 and effective effect size of 0.63. As I mentioned, we recently completed our end-of-Phase-II meeting with the FDA and as we expected, the FDA confirmed that our CLARITY study would be submitted as one of the 2 pivotal studies in support of an fNDA for the adjunctive treatment of major depressive disorder. Slide 21 shows our Phase III development program for MDD. We plan to conduct two six week, Phase III parallel designed placebo-controlled trials, thus subsequently derisking, substantially derisking our MDD program. Our CLARITY study combined with at least one of these Phase III trials will be the basis for an NDA submission. Moving on, I would like to discuss our schizophrenia inadequate response program. Data from our early Phase II study with pimavanserin added to low doses of risperidone, provided supportive evidence and proof of principle for further development of pimavanserin in this indication. As such, we initiated our ongoing Phase III ENHANCE study in treatment with an 80 patients and we remain on track to announce top line data from this study in mid-2019. Slide 23 highlights the trial design for our ENHANCE trial. This is a 6-week study, evaluating patients who have a negative response that they're antipsychotic treatment for schizophrenia and are receiving either pimavanserin plus background antipsychotic therapy or placebo plus background antipsychotic therapy. The primary endpoint is the change from baseline on the positive and negative syndrome scale total score. Turning to Slide 24. There is no FDA-approved treatment for the negative symptoms of schizophrenia. We are conducting a 380-patient Phase II study, and expect to complete enrollment in the second half of this year. Turning now to Rett syndrome and trofinetide on Slide 25. Rett syndrome is a debilitating neurodevelopmental disorder that occurs predominantly in females following apparently normal development for the first 6 months of life. Currently, there are no approved medicines for this rare disease, which affects approximately 6,000 to 9,000 patients in the United States. After recent interaction with the FDA, we have finalized our Phase III trial design for trofinetide. This three month study will evaluate approximately 180 females aged 5 to 20 with Rett syndrome. If our Phase III trial is positive, there is a potential to submit an NDA in 2021, based on this single Phase III study. Slide 27 provides a summary of our upcoming clinical milestones for 2019 and beyond. It is going to be an exciting time, and I look forward to updating you on our progress. With that, I will now turn the call over to Elena to discuss our financial performance.