Ensysce Biosciences, Inc.

Good morning and welcome to the NCIS Biosciences, Inc. Corporate Update Call. As a reminder, this conference call is being recorded. Your hosts today are Dr. Lynn Kirkpatrick, Chief Executive Officer, Dr. Bill Smith, Chief Medical Officer, and Dave Humphrey, Chief Financial Officer. Before we begin the phone presentation, I would like to remind everyone that the statements made on the call and webcast may include predictions, estimates, or other information that might be considered forward-looking While these forward-looking statements represent our current judgment on what the future holds, they are subject to risks and uncertainties that could cause actual results to differ materially. We are cautioned not to place undue reliance on these forward-looking statements, which reflect our opinions only as of the date of this presentation. Please keep in mind that we are not obligating ourselves to revise or publicly release the results of any revision to these forward-looking statements in light of new information or future events. Throughout today's discussion, we will attempt to present some important factors relating to our business that may affect our predictions. You should also review our most recent forms, 10Q and 10K, for a more complete discussion of these factors and other risks, particularly under the heading Risk Factors. At this time, I'd like to turn the call over to Chief Executive Officer, Dr. Lynn Kirkpatrick. Lynn?

Thank you, Operator, and good morning, everyone. Thank you for joining us. I am pleased to welcome you to today's corporate update conference call. 2023 was a year of exceptional clinical progress for our next generation analgesics as we move our programs toward commercialization. Before I get into the full background of the company, I remind you that NCIS' mission to provide safer therapeutics to treat severe pain To reduce abuse and to provide protection from overdose remains the core of our operation. A medical dichotomy exists between the treatment of severe pain with appropriate medication and the abuse and overdose that occurs with this class of drugs. Statistics suggest that the United States loses over 200 Americans every day to prescription opioid overdose. yet there are countless Americans with severe pain who cannot get access to the prescription medication. My NCIS team believes this is unacceptable, and we believe our novel TAP and MPAR opioid products provide a solution to address this dueling issue with opioids. For those of you new to our story, we are a clinical stage pharmaceutical company seeking to develop innovative solutions for severe pain relief while reducing the potential for opioid misuse, abuse, and overdose. We've used sophisticated chemistry in the development of our two technology platforms, TAP and MPAR, providing opioid abuse deterrence and overdose protection, respectively. We've strategically positioned our products as next-generation opioids. that improve the delivery and effectiveness of analgesic prescription drugs while reducing abuse potential. In 2023, we focused on the execution and completion of a number of PF614 and PF614 MPAR clinical trials, boosted capital resources, and scaled manufacturing procedures, which provided a solid operational foundation and resulted in favorable FDA discussions in early 2024. Following these valuable meetings, NCIS is well-positioned to enter the pivotal Phase III trials for PF614 in the second half of 2024. I will take you through a review of our two technology platforms, and then Dr. Bill Schmidt, our Chief Medical Officer, will expand on our clinical trial progress over the last year. stands for trypsin-activated abuse protection, which is the chemical modification of an active medication designed to make it inactive until it is swallowed and reaches the small intestine where it's exposed to the natural enzyme trypsin. Trypsin, only found in the small intestine, initiates the two-step process to effectively release the active opioids. In other words, our TAP prodrugs are activated or turned on by normal digestive enzymes that we use to digest our proteins in the small intestine. It's important to point out that trypsin is not found in other tissues, so our chemistry limits our TAP opioids to oral administration, which in turn is a means to reduce abuse. The second step of the opioid release, which is designed into the chemistry, determines whether our TAP pro drugs provide either an immediate or slow release profile, as is preferred for drugs that are required 24-7 to treat pain. Based on this two-step release mechanism, we refer to TAP as clever chemistry. And from our clinical studies, we've shown it to work as designed to improve safety and overall drug efficacy. Additionally, TAP can be applied to other types of medicines to provide a delivery mechanism to the gut, to improve safety, or to simply make them more effective. Our second technology platform, MPAR, or multi-pill abuse resistant, is our smart overdose protection technology, an industry first. We've designed MPAR as a combination product of our TAP prodrugs, with a small dose of trypsin inhibitor called nifamistat. This combination allows pain relief coupled with overdose protection. MPAR is designed to turn off the release of the active ingredient if more than a prescribed dose is consumed orally. This protection is smart since it only kicks in in an overdose situation. applied these highly novel technologies to several opioids and specifically to oxycodone for our lead product, PF614. We believe our entire tap drug class is set to become the next generation of opioids to treat severe pain in a safer manner than ever existed for opioid analgesic. We believe that controlling severe pain appropriately may prevent it from spiraling into chronic pain, which frequently leads to the use of opioids long-term. The initial role for a lead product PF614 may be in indications such as traumatic injuries or invasive surgeries. Additionally, we foresee PF614's future role in chronic pain conditions, such as treating osteoarthritis pain in patients who cannot use or do not respond well to less effective anti-inflammatory analgesics, and where high levels of pain negatively impact quality of life. CF614 MPAR with overdose protection is our follow-on product, and we believe it will provide an extra layer of safety for treating both acute and chronic pain. In brief, our TAP and MPAR technologies have been developed to address and reduce both prescription drug abuse and overdose. These are unique to the opioid class and provide a number of advantages over the currently marketed abuse deterrent formulated products. Advantages which we believe will provide both patients and prescribers more confidence in their medicine safety. Although we have focused on applying TAP and MPAR to opioid analgesics, we have explored applications with other classes of prescription drugs, which in turn provide substantial opportunities for future growth. Our current pipeline includes a number of TAP and MPAR opioids, TAP and MPAR ADHD products, and a discovery program program of novel TAP and MPAR agents for the treatment of opioid use disorder. Here is a brief summary of our programs before turning over to Dr. Schmidt to provide more clinical details. PF614, an oxycodone TAP product, is designed to replace OxyContin in the marketplace. The FDA has granted PF614 fast-track status for the use in chronic pain, which suggests regulatory confidence that PF614 may fulfill an unmet therapeutic need. We have completed the non-clinical package for PF614. We've completed five clinical trials for safety, efficacy, and abuse potential, and we've completed key manufacturing activities that position us to initiate our phase three program. Our accomplishments in 2023 include completion of PF614-104, a study that evaluated the oral abuse potential of PF614. We reported positive results in April of last year. Importantly, the secondary endpoint, take drug again, was significantly lower at both the low and mid doses of PF614 and was even numerically lower than comparator at the high dose, demonstrating that recreational drug users may be less motivated to abuse PF614 compared to immediate release oxycodone. A second study, PF614-201, was designed to measure the onset of pain relief for PF614 in the cold presser test. Establishing the time for drug onset was suggested by the FDA prior to initiating larger efficacy studies. Initiated in mid-2023, enrollment was rapid and the study was completed by year's end to support our end of phase two meeting with the FDA in January. We have used the data from this study to support the design of our phase three protocols, which were discussed at this end of phase two meeting. This meeting provided feedback and support for our non-clinical package and enabled a constructive discussion regarding phase three clinical trial design for PF614, as well as suggestions that we believe will support a successful new drug application, or NDA. This end of phase two meeting signifies a major step in the regulatory approval process of PF614. As previously mentioned, the results and analyses from our completed Phase II studies have informed our strategy and design of Phase III studies, which are expected to begin in the second half of 2024. Last year, we also completed a three-part Phase I study for our follow-on product, PF614-MPAR, that ultimately provided us with the first data demonstrating the potential for preventing prescription drug oral overdose. something felt to be a holy grail for opioids. Because of our positive data, the FDA encouraged us to apply for breakthrough therapy designation in late 2023. On January 19, 2024, we were informed that the FDA had granted us breakthrough therapy designation, which to date has only been provided to less than 300 drugs. Importantly, opioid analgesics have not previously been included in this exclusive drug classification. Breakthrough therapy is a process designed to expedite the development and review of drugs that are intended to treat a serious condition and that show preliminary clinical evidence of having a clear advantage over available therapies. We are highly encouraged by our innovative MPAR technology, which is truly groundbreaking and could save many lives. Strategically, to broaden our portfolio, in November 2023, we executed a letter of intent with Sweden-based Oncozenge to explore a collaboration for the U.S. development of Bukazenge, which is in Phase III clinical trials in the European Union. Bupazenj is a non-opioid lozenge to treat pain caused by oral mucositis, a condition resulting as a side effect of cancer therapies. We believe this collaboration could allow Insights to diversify its pain pipeline, and discussions are continuing. Finally, I want to stress our programs are protected by a global intellectual property portfolio of over 100 patents issued in 25 countries, ensuring an opportunity to address the need for safer pain medication globally. We have built a strong, motivated, and experienced team to usher our programs through each stage of development in an attempt to launch our next generation products as quickly as possible. Now I'm pleased to turn over the call to Dr. Bill Schmidt, our Chief Medical Officer, to further elaborate on our recent clinical study results. Bill?

Thank you, Lynn. I'm pleased to provide an update on NCIS' significant progress with our clinical program and further development of PF614 during 2023. We believe the results from our trials throughout the year have provided a formative structure as we advance to phase three studies of PF614 in 2024. As Lynn mentioned, we are developing a next-generation opioid analgesic, which promises strong efficacy with less potential for abuse and overdose, something the industry and society really need. Over the past year, we've been perfecting our clinical package to ensure it will support a successful NDA. In all, we have completed five clinical trials with PF614, a single ascending dose study, also known as a SAD study, A multiple ascending dose study, also known as a MAD study, that was combined with a bioequivalence arm demonstrating that PF614 delivers oxycodone in a dose equivalent fashion similar to OxyContin to support our use of the 505 shortened regulatory pathway. Two human abuse potential studies to support abuse deterrent labeling. and most recently, an analgesic efficacy study that evaluated the time to onset of analgesia following oral dosing of PF614. The efficacy study, PF614-201, was designed after receiving feedback from the FDA on our plan to explore PF614 efficacy for the acute pain indication. PF614-201 was a phase two study entitled a randomized, double-blind, placebo-controlled crossover study of PF614 on analgesic response in the cold pressure test in healthy male subjects. It evaluated the time to efficacy onset for analgesia and measured pain intensity following two different oral doses of PF614 versus placebo. The study was initiated and enrolled quickly to provide data for discussion with the FDA during our end of phase two meeting early in 2024. The study measured the onset of pain relief versus time in male subjects who submersed their non-dominant hand in a two-degree centigrade freezing ice water bath. This is a well-established method to measure pain and efficacy of novel pain products and provides a method to establish the time that the pain relief begins to occur. Following completion of enrollment in November 2023, we reported results in December that reinforced the efficacy of PF614 demonstrating the time of analgesia onset and its ability to provide significant pain intensity reduction, the first ever measured for any TAP opioid analgesic. The study pain endpoints matched all previous pharmacokinetic endpoints from prior clinical studies and supported the concept that NCIS's TAP opioids deliver strong analgesia safely and effectively. Importantly, this time of onset study provided data that aided the design of key elements of our Phase III studies that we are aiming to initiate in the second half of 2024. Early last year, we also completed enrollment of the final part of our first clinical trial to evaluate overdose protection, PF614-MPAR-101. This study was undertaken in partnership with Quotient Sciences. Using their integrated translational pharmaceutical platform for the clinical testing of PF614-MPAR allowed us to complete this highly complicated study in record time. The final data from part three of this trial confirmed that consumption of increasing amounts of PF614-MPAR at the 25 milligram dose level resulted in protection from oral overdose if three or more capsules were taken simultaneously. This part of the trial was designed to deliver increasing amounts of PF614-MPAR at the 25 milligram dosage. Specifically, we administered one, two, three, five, or eight dose units at one time and measured resulting plasma levels of oxycodone. All of the subjects were naltrexone blocked for safety, and the resulting oxycodone released into their plasma was measured and compared to previous data generated with the delivery of increasing doses of PF614 without MPAR protection. The data showed that delivery of one or two dose units of PF614-MPAR provided analgesic level doses of oxycodone as designed. Once the dose units were increased to three or more, the amount of oxycodone released was reduced as compared to levels of unprotected PF614. At eight dose units, there was significantly less plasma oxycodone, This is significant at P is less than .0033, and if the same dose of PF614 was delivered unprotected. These data were presented to the FDA and was the basis for the grant of our breakthrough therapy designation, something highly unique for an opioid product and something we are exceptionally proud of. PF614 MPAR is the first ever opioid analgesic with oral overdose protection. Finally, results from our intranasal human abuse potential study provided the first human data to show that the intact prodrug, PF614, when absorbed into the bloodstream does not convert to oxycodone. This confirms a key design feature of PF614 in that it requires exposure to the digestive enzyme trypsin to convert to oxycodone. As Dr. Kirkpatrick mentioned, this can only occur in the human gastrointestinal tract. This information is important as it supports our contention that attempts to abuse PF614 by direct intravenous injection will be unsuccessful for supporting the habits of IV drug abusers. I will now turn the call back over to Lynn.