Jan D'Alvise
Analyst · Oppenheimer. Please go ahead
Thank you, Robert. Given that we conducted our last conference call only about a month ago when we announced the positive results of our PK bridging study for GTX104, we plan to keep today's prepared remarks covering our fiscal year 2022 rather brief, allowing for more time at the end for questions. Fiscal ‘22 was a truly transformative year for Acasti. We pivoted as a company and acquired Grace Therapeutics in late August of 2021. This acquisition gave us a new mission of reformulating and repurposing marketed medicines for indications in rare and orphan diseases where significant unmet medical needs exist. This strategy allows us to pursue the 505b2 regulatory pathway, which is potentially a faster lower cost and lower risk approach to getting drugs approved by the FDA. We now have three drug candidates advancing in clinical development, and all three have already received orphan drug designation by the FDA, which could grant a seven years of market exclusivity in the United States. We also expanded an already extensive portfolio of approved and pending patents that cover composition of matter and method of use, which can extend our market exclusivity to 2036 and beyond. So let me give you a quick update on the status of our lead drug candidate GTX104, which is a novel formulation of nimodipine for IV infusion designed specifically for patients with Subarachnoid Hemorrhage or SAH which is a condition caused by bleeding on the brain due to a ruptured aneurysm. SAH presents a life-threatening emergency for the patient and our new proprietary IV drug formulation addresses a vital need in the critical care market that has seen little innovation over the years. SAH patients are so critical, that 10% to 15% die before they ever reach the hospital and about one-third ultimately do not survive. Another third of these patients required depending care for the rest of their lives. SAH is estimated to affect about 50,000 patients per year in the United States alone and based on our market research we believe that GTX104 represents a total available market in the United States of more than $300 million. The current standard-of-care is an orally administered drug called nimodipine, which was approved by the FDA back in 1988. Nimodipine is a powerful calcium channel blocker and it works primarily on the brain to lower the patient's blood pressure by relaxing cerebral blood vessels, thereby increasing blood flow and oxygenation. Nimodipine is mandated by the Joint Commission that certifies U.S. Stroke Centers to be administered to all patients with SAH, as it’s been shown to reduce the incidence of delayed cerebral ischemia and to improve neurological outcomes. Nimodipine is available in the U.S. only as an orally administered capsule, which is problematic as many of these SAH patients are not conscious or if they are awake they have a hard time swallowing oral drugs. The nursing staff must pull apart the capsule, siphon off the drug to be delivered orally to the patient via a nasogastric tube that goes directly into the stomach. As nimodipine can stick to the side of the tube, it's very difficult to control how much drug is actually being delivered and ultimately absorbed. This leads to a lot of variability in dosing and the resulting blood pressure of the patient. We believe that GTX104 delivered intravenously could be a major improvement in the standard-of-care as a more convenient, efficient and precise way to deliver nimodipine directly into the patient's bloodstream. On May 18th, we held a conference call where we announced that our GTX104 PK bridging study successfully met all its endpoints. The primary objective of the PK study was to evaluate the relative bioavailability of GTX104 delivered intravenously, compared to oral nimodipine and healthy adult male and female subjects, while the secondary objective was to assess its safety and tolerability. The result showed statistically, no difference in maximum and total exposure between IV GTX104 and the oral formulation of nimodipine and no serious adverse events were observed. This means that GTX104 can be considered essentially bioequivalent to oral nimodipine. Additionally, the bioavailability of oral nimodipine capsules was observed to be only 8%, compared to GTX104, which when given intravenously is naturally 100% bio-available. Consequently, less than one-tenth the amount of nimodipine is administered with GTX104 to achieve the same blood levels as the oral capsules. One of the most important findings from this PK study is the plasma concentrations obtained following IV administration of nimodipine showed significantly less variability between subjects, as compared to oral administration, both the inter and intra subject variability was significantly lower for GTX104, as compared with oral nimodipine. This is important as we believe that because of its better absorption profile and more consistent blood levels GTX104 may provide physicians with a more reliable and effective treatment for patients with SAH. This is a key advantage as we believe GTX104 could help to reduce the incidence of hypertensive events and vasospasm, which require immediate and costly intervention and can lead to worse outcomes for the patient. Moreover, it could provide dosing flexibility and a more consistent and convenient route of administration for the significant percentage of patients, who present and remain unconscious during their ICU stay following SAH. Finally, despite the positive impact in nimodipine has on recovery and an improving neurological outcomes, physicians most often discontinue nimodipine treatment, primarily as a result of hypertensive episodes that are difficult to control with the oral administration of the drug. Such discontinuation of nimodipine could potentially be avoided by giving the patient GTX104, which because of its IV administration, the rate of infusion can be controlled and may also alleviate the need for careful attention to the timing of oral nimodipine administration at least one hour before or two hours after a meal. For all these reasons we believe IV administration of GTX104 could be a much better option for SAH patients than oral nimodipine. It represents a significant commercial opportunity and we believe GTX104 could be well positioned to rapidly capture market share if the FDA grants approval. We plan to submit our recent PK bridging study results to the FDA very soon. Along with our proposed design for the Phase 3 safety study, which we believe can start as planned in the second half of this year. The safety study is expected to be the final step required to seek regulatory approval under the 505b2 regulatory pathway before submitting our new drug application to the FDA. We believe the safety study should be relatively low risk based on the favorable safety profile observed. Now in more than a 130 patients combined from our Phase 1 PK studies. In addition to GTX104, we remain enthusiastic about the depth of our clinical pipeline, which includes GTX101 and GTX102 and we continue to make steady progress advancing these two drug candidates towards their next major milestones. Excuse me -- as a reminder GTX102 is a novel concentrated oral mucosal spray a betamethasone intended to improve the neurological symptoms of Ataxia-telangiectasia or A-T for short. A-T is a progressive neurodegenerative genetic disease that primarily affects children causing severe disability and for which no treatment currently exists. GTX102 is comprised of the active glucocorticoid steroid betamethasone and can be sprayed conveniently over the tongue of the A-T patient, we believe there is a significant market opportunity for GTX102, as it could be the first FDA approved therapy for the more than 4,080 patients diagnosed in the U.S. Based on third-party market research we estimate the A-T market for GTX102 to be about 150 million in the United States alone. We plan to initiate the PK bridging study of GTX102 in calendar Q3 of 2022 and we continue to expect to report out the results before the end of this year. The objective of this important PK study is to compare the bioavailability of three different doses of GTX102 to an oral solution of betamethasone, which is only available in Europe and to the injectable form a betamethasone, which is available in the U.S. Based on the FDA's guidance following the PK bridging study and assuming the PK bridging study meets its primary endpoint, we plan to conduct a Phase 3 safety and efficacy trial in A-T patients, which is expected to be initiated in the first half of 2023. If both the PK and Phase 3 studies meet their primary endpoints and NDA filing under Section 505b2 would follow. The final program that we have currently in the clinic is GTX101, which again is a non-narcotic topical bio adhesive bupivacaine spray that forms a thin film on contact with the skin in the targeted area of pain. We designed it to help relieve the painful symptoms of Postherpetic Neuralgia or PHN. PHN is the excruciating nerve pain that many older people experience after the visible manifestations of a shingles infection have subsided. We commissioned primary market research with more than 250 physicians that routinely treat PHN patients. And they indicated that a significant unmet need exists. Approximately 40% of patients that are prescribed the standard-of-care, which includes oral gabapentin and lidocaine patches experience insufficient pain relief. Gabapentin does not work well it can cause unpleasant side effects and was recently added to the controlled substance list due to a tenancy for abuse. The patches are difficult to use, they fall off and can cause skin sensitivity and irritation, especially in older individuals and depending on their placement, they're very inconvenient, uncomfortable and unattractive. Additionally, it can take up to two weeks for the patch to work and it can only be worn for a continuous 12 hours and then it must be removed for another 12 hours, so breakthrough pain is common. Given these issues with the oral and patch alternatives too many of these patients end up being prescribed opioids, which given the abuse potential physicians want to avoid at all costs. The potential benefits of GTX101 could include faster onset of action, which is inherent in our active ingredient bupivacaine versus lidocaine, as well as a longer duration of pain relief. GTX101 can be conveniently sprayed on the skin wherever the pain is located and based on the PK profile of bupivacaine we believe that GTX101 may be applied twice a day to the affected area for 24/7 pain relief, although this dosing schedule will need to be confirmed in our clinical trials. We believe GTX101 has the potential to be a game changer as a non-opioid analgesic for PHN patients, who suffer from this debilitating pain. We expect to report results of a mini pig skin sensitivity study in early calendar Q3, we're also planning to initiate a single dose study and a multiple ascending dose study in healthy human volunteers, both in calendar Q3 2022. These two important clinical studies are expected to report out before the end of this calendar year. Results from the multiple ascending dose study is required before we can initiate our Phase 2 program in PHN patients, which is expected to start early in 2023. So you can see that we currently have significant ongoing clinical and CMC activities underway for all three of our pipeline programs. You will also note that we had a total of almost $44 million in cash, cash equivalents and short-term investments on our year-end March 31 balance sheet. We continue to believe this cash position will allow us to complete Phase 3 for GTX104 and submit our NDA for the FDA to review, while also advancing GTX102 into Phase 3 and GTX101 into Phase 2 all important milestones and key value inflection points. We're very excited about the prospects ahead for the company and look forward to keeping you apprised of our progress towards our many milestones in this new fiscal year. I'd like to now turn the call over to Brian Ford, our CFO to review our fiscal ‘22 financial results. As a conclusion of Brian's remarks, we'll open the call for questions. Brian?