Jan D'Alvise
Analyst · Oppenheimer. Please go ahead
Thank you, Robert, and thank you, everyone, for joining the call today. We're really excited to update you on the significant progress made during the second fiscal quarter to advance our three clinical programs. We remain on track to initiate and enroll the first patient in our Phase 3 safety study for GTX-104 in the first half of calendar 2023. This is a key milestone for the company and was expected to be the final clinical step required to seek regulatory approval. As a reminder, GTX-104 is our most advanced clinical program focused on developing and commercializing a novel aqueous formulation of nimodipine for continuous IV infusion to treat patients suffering from Subarachnoid Hemorrhage or SAH. I'll go into more details in a moment on upcoming timelines and the overall business opportunity for this program. Also during the second fiscal quarter, we initiated two PK bridging studies, one for GTX-102, our novel concentrated oral mucosal spray of betamethasone, intended to improve the neurodegenerative symptoms of Ataxia Telangiectasia or AT in pediatric patients. And one for GTX-101, our non-narcotic topical bio adhesive film-forming bupivacaine spray designed to treat Postherpetic Neuralgia or PHN. The severe and often debilitating nerve pain that can persist following the shingles infection caused by the varicella zoster virus, the same virus that causes Chickenpox. The GTX-102 PK studies expected to be completed with top line results reported before year end. With positive results from this study, we expect to initiate our Phase 3 program in children with AT and the second half of calendar 2023. The GTX-101 single dose PK study is also expected to be completed by the end of calendar 2022 and is expected to provide important information on the dosing strength and frequency ahead of the initiation of additional clinical studies of GTX-101 in humans planned next year. I'll dive deeper into planned activities and the overall opportunities for both GTX-102 and GTX-101 in a moment. Perhaps most important in today's environment is that we finished the second fiscal quarter ending September 30, 2022 with about $35 million in cash, cash equivalents and short term investments. Based on current projections we believe this is sufficient capital to continue to fund operations through at least March of 2024 and will fund the advancement of GTX-104 well into Phase 3 and allow us to advance GTX-102 and 101 to additional key inflection points. Taking a step back and as a reminder, our strategy is to leverage the company's drug delivery technologies and capabilities to reformulate and repurpose marketed drugs for new orphan indications where a significant unmet medical need exists. The well understood efficacy and safety profiles of these marketed compounds provide the opportunity for us to utilize the FDA's Section 505(b)(2) regulatory pathway for the development of our reformulated drug candidates and therefore may potentially provide a shorter less risky and less costly path to regulatory approval. For those not familiar under Section 505(b)(2) if sufficient support of a product safety and efficacy can be established either through previous FDA experience or sufficiently within the scientific literature, it may eliminate the need to conduct some of the preclinical and clinical studies that new drug candidates might otherwise require under the 505(b)(2) (ph) pathway. And as I've mentioned before, all three of our drug candidates have already received orphan drug designation from the FDA and have the potential to be considered for Fast Track review and approval. Orphan Drug Designation provides for seven years of marketing exclusivity in the United States post launch provided certain conditions are met and 10 years in Europe. These rare diseases also typically involve clinical trials with fewer patients and provide market opportunities that often require a much smaller, more targeted commercial infrastructure. It's important to point out that the orphan diseases that Acasti has targeted for drug development are well understood, although these patient populations may remain poorly served by available therapies or for example, in the case of our GTX-102 for children with AT, approved drug therapies do not yet exist. Our aim is to effectively treat the debilitating symptoms that result from these underlying diseases with the ultimate goal of improving quality of life and outcomes for these patients and their families. We believe that leveraging the Section 505(b)(2) regulatory pathway for the development of our reformulated versions of these drugs provides us with highly attractive opportunities in orphan disease indications with little or no current competition. Okay. So let me now circle back to GTX-104 and I'll update you on the upcoming timelines, milestones and what we see is the overall commercial opportunity. As I mentioned, GTX-104 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 in over 30 years. The condition of SAH patients is so critical that 10% to 15% of them die before they ever reach the hospital and only about one-third ultimately survive. Another third of these patients require dependent care for the rest of their lives. So to help address this very severe condition, we completed a Phase 1 PK bridging study in May of 2022, which successfully met all of its endpoints. The primary objective of this study was to evaluate the relative bio availability of our IV GTX-104 compared to oral nimodipine capsules in healthy adult male and female subjects. While the secondary objective was to assess its safety and tolerability. Importantly, the inter and intra subject variability was much lower for GTX-104 as compared with oral nimodipine. We believe that because of its better absorption profile, and more consistent blood levels. GTX-104 may provide physicians with a more reliable and effective treatment for patients with SAH. This could be a key advantage as GTX-104 could help to reduce the incidence of hypertensive events and vasospasm, which require immediate and costly intervention such as balloon angioplasty, or the use of intra-arterial vasopressors, which can lead to a worse outcome for the patient. We've submitted a letter to the FDA to request a Type C meeting to review and discuss the results of the PK bridging study and our proposed design for the Phase 3 safety study As we believe it's important to obtain the FDA's feedback and guidance before initiating the Phase 3 safety study, next year. We expect to meet with the FDA by early January 2023, which should allow us to initiate the Phase 3 safety study and enroll the first patient according to plan in the first half of 2023. As mentioned, the Phase 3 safety study is expected to be the final step required to seek regulatory approval before submitting a new drug application to the FDA for GTX-104 for the treatment of SAH patients. We're extremely excited about the opportunity to bring a new treatment option to patients that suffer from the SAH, with an estimated 50,000 patients per year in the United States alone. Based on our market research, we believe that GTX-104 represents a total available market in the U.S. of more than $300 million. The current standard of care is an orally administered drug called nimodipine, which is approved by the FDA way back in 1988. Nimodipine is a potent calcium channel blocker that relaxes the blood vessels in the brain and lowers blood pressure to allow more oxygenated blood into the brain to enhance healing. It's typically given throughout the entire period that the patient remains in the hospital which can be up to three to four weeks or sometimes even longer depending on the severity of the patient's condition. Nimodipine is available in the U.S. as an orally administered capsule or liquid, which is problematic as many of these SAH patients are not conscious or if they're awake, they have a hard time swallowing oral drugs. Consequently, nimodipine often must be delivered via a nasogastric tube and the drug can stick to the inside of the tube, which can result in significant variability in dosing. Oral nimodipine is also poorly absorbed adding to the difficulty in controlling the blood pressure of the patient. For these reasons, physicians sometimes must reduce the dose or discontinue nimodipine altogether, meaning the patient will not get the full benefit of the drug. We believe that GTX-104 delivered intravenously could be a game changer as a more convenient efficient and precise way to deliver nimodipine directly into the patient's bloodstream. Okay. Let's transition now to GTX-102 and I'll start with a brief program overview. GTX-102 is a novel concentrated oral mucosal spray a betamethasone intended to improve the neurological symptoms of Ataxia Telangiectasia or AT, for which there are currently no FDA approved therapies. AT is a progressive genetic neurodegenerative disorder that primarily affects young children, causing severe disability, impairment of the immune system and an increasing susceptibility to infections and cancers. Patients typically die in their mid-20s from complications of lung, lung effects and effects approximately 4,300 patients per year in the United States. And based on the number of treatable patients, has a potential addressable market of about 150 million. GTX-102 is comprised of a proprietary concentrated formulation of the glucocorticoid steroid betamethasone that can be sprayed conveniently over the tongue of the AT patient who often have difficulty swallowing. As I mentioned a moment ago, we initiated a Phase 1 PK bridging study in the third calendar quarter of 2022 to evaluate the comparative bioavailability pharmacokinetics and safety of our oral betamethasone spray, GTX-102 compared to an intramuscular injection of betamethasone, the reference drug and to an oral solution of betamethasone in 48 healthy subjects. The first subject first dose was administered on September 13, 2022. This PK study is the next step in the clinical development pathway for GTX-102 and is expected to be completed with top line results reported before calendar year end. I look forward to sharing more with everyone in the coming weeks on this important study. And finally, let's discuss the progress that our team has made on GTX-101, our novel non-narcotic thin film, bio adhesive topical bupivacaine spray designed to treat PHN, the severe and often debilitating nerve pain that can persist following the shingles infection. It's important to point out that market studies suggest a significant unmet need exists for treating these patients with PHN. Approximately 40% of patients who are prescribed the standard of care, which includes oral gabapentin and lidocaine patches experienced, insufficient pain relief and gabapentin has unpleasant side effects. Consequently, many of these patients ended up being prescribe more potent drugs such as opioids, which can be addictive. The potential benefit of GTX-101 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. GTX-101 can be conveniently sprayed on the skin wherever the pain is located. And based on the PK -- the PKA schedule will need to be confirmed in our clinical trials. We believe GTX-101 has a tends to be a disruptive therapy as a non-opioid analgesic for PHN patients who suffer from this debilitating pain. On July 26, 2022, we initiated the PK bridging study to evaluate the relative bioavailability of GTX-101 compared to the reference listed drug bupivacaine in 48 healthy subjects. The PK study is the next step in our clinical development pathway for GTX-101. The PK study is expected to be completed by the end of calendar 2022 as planned and is expected to provide important information on the dose and dosing frequency for additional clinical studies of GTX-101 in humans in 2023. I look forward to sharing more with everyone in the coming weeks on this study. So let me recap quickly before I turn it over to Brian for a quick review of our Q2 numbers. First, we expect to receive guidance from the FDA on our proposed Phase 3 safety study design for GTX-104 in the form of a Type C meeting no later than early in the first calendar quarter of 2023. This should allow us to initiate a Phase 3 safety study and begin enrolling the first patient as planned in the first half of 2023. The study is expected to take about 18 months to complete and is expected to be the final clinical step required to seek approval under the 505 (b) (2) regulatory pathway. The PK bridging study of GTX-102 was initiated on September 13, 2022, and we expect to report out top line results on schedule next month before the end of calendar 2022. Assuming the PK bridging study meets its primary endpoint, we expect that the final development step is to conduct a Phase 3 safety and efficacy trial in AT patients. We plan to request a Type B meeting with the FDA following the completion of the PK study to confirm that Phase 3 study design and the Phase 3 study is expected to be initiated in the second half of 2023. If both studies meet their primary endpoints and NDA filing for GTX-1012 or under Section 505 (b) (2) would follow. The single dose study of GTX-101 was initiated on July 26, 2022 in healthy human volunteers. This PK study is the next step in our proposed 505 (b) (2) regulatory pathway for GTX-101 and the PK study is expected to be completed by the end of calendar 2022 as planned and should provide important information on the dose and dosing frequency for additional clinical studies of GTX-101 in humans in 2023. And finally, it's important to note that we finished the second fiscal quarter ending September 30, 2022 with about $35 million in cash, cash equivalents and short term investments We continue to believe that this is sufficient capital to fund operations through at least March of 2024, allowing for the advancement of 104 well into Phase 3 and advancing GTX-102 and 101 to key value inflection points. We're very excited about the prospects ahead for the company and we look forward to keeping you apprised of our progress towards our many milestones this new fiscal year. I'd like to now turn the call over to Brian Ford, our CFO, to review our financial results. And at the conclusion of Brian's remarks, we'll open the call for your questions. Brian?