Ladies and gentlemen, good afternoon, and welcome to the Longeveron Fourth Quarter and Full Year 2023 Earnings Conference Call. At this time, all participants are in a listen-only mode. A brief question-and-answer session will follow the formal presentation. [Operator Instructions] As a reminder, this conference is being recorded. It is now my pleasure to introduce your host, Mike Moyer, Managing Director of LifeSci Advisors. Please go ahead.

Thank you, operator. Good afternoon, everyone, and welcome to Longeveron's 2023 year-end results conference call. Today, we will discuss financial results from the year ended December 31, 2023, and provide a business update. After the market closed today, we issued a press release with these results, which can be found under the Investors section of the Longeveron website. I'm joined on the call today by the following members of Longeveron's management team. Mr. Wa'el Hashad, Chief Executive Officer; Dr. Nataliya Agafonova, Chief Medical Officer; and Lisa Locklear, Chief Financial Officer. Mr. Hashad will begin with a brief corporate update, then Dr. Agafonova will review Longeveron's progress in its clinical programs and Ms. Locklear will review financial results for 2023. Following the company's prepared remarks, we will open the call to questions from covering analysts. As a reminder, during this call, we will make forward-looking statements, which are subject to various risks and uncertainties that could cause our actual results to differ materially from these statements. Any such statements should be considered in conjunction with cautionary statements in our press releases and risk factors discussed in our filings with the SEC, including our quarterly reports on Form 10-Q and annual report on Form 10-K and cautionary statements made during this call. We assume no obligation to update any of these forward-looking statements or information. Now I'd like to turn the call over to Mr. Wa'el Hashad, Chief Executive Officer of Longeveron. Wa'el?

Thank you, Mike. Good afternoon, everyone. We are pleased speaking with you today. On this call, we briefly recap of the major highlight of our year 2023 and outline strategic priorities for 2024. Then we will be happy to answer any questions you have. 2023 was a productive year for Longeveron. During this year, that's 2023, we made significant progress advancing our lead assets, Lomecel-B, to important milestones. Presenting long-term survival data from our ELPIS I clinical trial in hypoplastic left heart syndrome at the American Heart Association Annual Meeting in Philadelphia and announcing clinically meaningful results from our Phase 2a CLEAR MIND trial in Alzheimer's disease. We also took steps to strengthen our balance sheet, securing $6.4 million of gross proceeds from equity financing during the fourth quarter. For 2024, our strategic priorities are focused on our lead program in hypoplastic left heart syndrome, or HLHS. With the goal of completing enrollment in our ELPIS II Phase 2 clinical trial this year, ELPIS II has exceeded its 50% enrollment threshold and we are working with the clinical investigators to expedite enrollment. HLHS is our top priority program, and we believe our most important value driver in near-term. Accordingly, we made the strategic decision to discontinue our Phase 2 clinical program in Aging-related Frailty in Japan in order to focus on our available resources on HLHS and ELPIS II enrollment. We are also exploring opportunities to advance our Alzheimer's disease program through potential partnerships or other sources of funding. These steps will allow us to focus our available resources on completing enrollment in our ELPIS II study in 2024. The data that we have generated in HLHS and Alzheimer's disease all support broader potential for Lomecel-B as a regenerative medical therapy for range of unmet medical needs. Though we remain confident in the broader therapeutic potential of this asset, we believe that narrowing our focus in the near-term on HLHS is the best interest of the patients, investors and our shareholders. With that, I will turn the call to Dr. Agafonova to provide you a review of the recent data on our clinical program so far. Nataliya?

Thank you, Wa'el, and good afternoon, everyone. Today, I will provide a brief overview of our HLHS program, discuss the extended survival data we presented from our ELPIS I trial results at the AHA Scientific session and update our progress in enrollment for our ELPIS II study. Then I will review the additional results we announced from our CLEAR MIND study in Alzheimer's disease. HLHS, for those who might not know, is a rare congenital and devastating birth defect in which the left the ventricle of the heart is either severely underdeveloped or missing. The condition affects approximately 1,000 babies per year in the United States. Babies born with this condition have severely diminished systemic blood flow which require children to undergo a complex three-stage heart reconstruction surgery process over the course of the first five years of their life. While these children can now live into adulthood with surgical intervention, only 50% to 60% of affected individuals survive to adolescents due to right ventricle failure, which is often unable to handle the increased load required to support systemic circulation. Furthermore, even those children this successful surgical intervention are at elevated trees of short-term mortality, delayed development and long-term complications, including organ failure. As such, there is an important unmet medical need to improve right ventricular function in these patients to improve both short-term and long-term patient outcomes. As Wa'el mentioned, the latest long-term survival data, from our ELPIS I study, Phase 1 of Lomecel-B in children with HLHS were presented as a poster at the scientific sessions of the American Heart Association. 10 patients participated in ELPIS I trial, during which Lomecel-B was injected into the right ventricle concurrent with the Stage 2 surgery, also known as the Glenn procedure. In the presented data, 10 patients were monitored for…

Thanks, Nataliya, and good afternoon, everyone. Most of what I'll be covering this afternoon is presented in more detail in our condensed financial statements and in our management's discussion and analysis of operations in our annual report on Form 10-K, which we filed today. Revenues for the years ended December 31, 2023 and 2022 were $0.7 million and $1.2 million, respectively. 2023 revenues decreased $0.5 million or 42% when compared to 2022 as a result of decreased grant revenue and lower participant demand for our Bahamas Registry Trial. Grant revenue for the years ended December 31, 2023, and 2022 was less than $0.1 million and $0.3 million, respectively. The decrease of $0.2 million when compared to 2022 was primarily due to a reduction in grant funds available due in part to the completion of the grant-funded clinical trials. Clinical trial revenue, which is derived from the Bahamas Registry Trial for the years ended December 31, 2023, and 2022 was $0.7 million and $0.9 million, respectively. Clinical trial revenue for the year ended December 31, 2023, decreased by $0.2 million when compared to 2022 as a result of decreased participant demand. Related cost of revenues was $0.5 million and $0.7 million for the years ended December 31, 2023, and 2022, respectively. The decrease of $0.2 million was primarily due to the decrease in the revenues earned from Bahamas Registry Trial and reduced direct costs associated with our Grants program. This resulted in a gross profit of approximately $0.2 million for the year ended December 31, 2023, when compared – a decrease of $0.3 million when compared with a gross profit of $0.5 million for 2022. General and administrative expenses for the year ended December 31, 2023, increased to approximately $11.4 million compared to $8.1 million for the same period in 2022.…

Thank you, Lisa. So to conclude, our focus in 2024 is on advancing our clinical program in HLHS and completing ELPIS II enrollment. We also are leveraging the data from our CLEAR MIND study with the goal of securing an appropriate partnership for continued advancement of Lomecel-B in Alzheimer's disease indication. We are taking appropriate measures to support our efforts within currently available resources, managing our cash spending and are seeking additional financing opportunities to help realize Lomecel-B full potential. Supported by data obtained from ELPIS I and CLEAR MIND, we are confident that Lomecel-B represents an important potential breakthrough for patients and an attractive value proposition for our investors. Now I would like to open the call for questions. Operator, please open the line to our covering analysts.

Thank you. Ladies and gentlemen, we will now be conducting a question-and-answer session. [Operator Instructions] Our first question is from the line of Boobalan Pachaiyappan with H.C. Wainwright. Please go ahead.

Hi, this is Dipesh on behalf of Boobalan, H.C. Wainwright. I had several questions. The first is with respect to the HLHS study, can you give us additional granularity on the timing of the enrollment completion? So are you looking at maybe third quarter of 2024 or fourth quarter of 2024?

Fourth quarter of 2024…

Sorry, what was that third quarter, you said?

Fourth quarter of 2024.

Okay, thank you. And then second question, you recently presented ELPIS I trial survival data at the American Heart Society presentation, can you give us a general sense of the response that you received mainly from the physicians who are treating HLHS patients?

Nataliya, do you want to take that question since you attended the meeting?

Sure. Thank you so much. Thank you for the question. I had an opportunity to be in front of the poster and reply to questions of some physicians, surgeons who came to the poster. Overall, it's excitement in the area. As you know, HLHS even if it's addressed by the surgery, but the three stages of surgery, there are still limitations and surgeons and everybody who taken care of these patients, also looking for the opportunities to improve lives of these patients and mostly improve the long-term survival and delay or even not to have heart transplantation. So there is an overall excitement. There is an option for this patient – for patients and the feedback was overwhelmingly positive.

Great. Thank you for that additional clarity. And I've got one last question. Can you characterize the ex-U.S. interest in Lomecel-B’s potential in HLHS treatment? Do you believe you could out-license the asset for ex-U.S. commercialization? And so any information that you can share around the ex-U.S. partnership interest would be appreciated. Thank you.

Sure. I'll take that question. First and foremost, I would say that we are open for, as I mentioned in our earnings call, that we are open to any partnership opportunity that may come both in the U.S. and outside of the U.S. We remain confident that we can launch the product in the U.S. and outside the U.S. on our own for HLHS, definitely for larger indication, we will need a bigger support. As for the opportunity for HLHS outside of the United States, the prevalence of the disease is fairly similar to the prevalence of the disease in the United States and it represents a total opportunity of accessible patients of more than 5,000 outside of the United States. Many of them will be in Europe, but there is also a considerable amount of HLHS in Japan and other countries as well that represents a very good opportunity for the international market. I would say that we believe our trial once completed, could also be used as a submission trial for filing the same application outside in the United States, including Europe. And the one nice thing that I will add on this one, and I've mentioned it before, is that the treating community for HLHS is very small community. And that represents a very good commercial opportunity. It just represents a much easier path for commercial addition in general. With that, I would say, a small community.

Thank you. I appreciate the details. Wa'el and Nataliya, thanks for the update.

Thank you.

Thank you. Our next question is from Michael Okunewitch with Maxim Group. Please go ahead.

Thank you for taking my questions tonight. I guess, first off, I would like to see if you could help quantify what kind of impact on your expense profile we could see from the termination of the frailty program in Japan.

Michael, I will tell you that, as you know, the trial wasn't significant from a number of patients, and there is still some closing costs that we need to do before we close the trial as a whole. Definitely, we had a lot of expenses as well in 2025 and some even may lead into 2026. I can tell you that all the 2025, 2026 expenses will be saved in addition to a significant saving in 2024. How much exactly? We have not finalized, as I said, because we haven't closed all the costs, but it would be rounded to about $1 million potentially from Japan.

All right, thank you for that. And then at the top of the call, you did mention that you're taking some steps to expedite enrollment in ELPIS II. Could you help provide some color on what steps you are taking?

Yes, I can have Nataliya take the first stab at this one, and I'm happy to add any further, but I'm sure Nataliya can answer that question.

Thank you so much. So there are a few measures we've taken to expedite enrollment to help to complete enrollment in 2024. One of the steps we are currently in the middle of activating four new sites, and they are very prominent sites with potential to enroll many patients to the trial. And then we do have other measures for investigator meeting and internal communications, et cetera. But the most probably important is to engage other investigators by enrolling new sites. Currently, we have seven sites activated and this four additional, we are confident that the enrollment will be completed in 2024.

Michael, let me add a couple of things to what – I think Nataliya has alluded to them briefly, one is the investigator meeting. We're planning on doing an investigator meeting. That is, we believe, is an important step. As you hear from Nataliya, we're adding four new sites. In order to accelerate this, we believe that one of the best mechanisms is to share some of the best practices from the sites that has been there. As you also know, that was a trial that has been going now for over 1.5 year, sometimes sites gets a fatigue. So we believe that the investigator meeting will be used to or utilized to reinvigorate the sites and the excitement around the study and enable us to complete. The last thing that I will add is that the team, also Nataliya's team is working with advocacy groups and so on to increase the level of awareness among the patients. I remind you that this is still a very small population. So it has all the challenges of rare diseases, but we are committed to, as I said, working with advocacy group and drive awareness about our trial and the work that we're doing.

All right, thank you. And then just one last one for me and then I'll hop back into the queue. So over the last couple of months, we have seen some activity from Mesoblast in HLHS, specifically some FDA designations in the publication back in December. So could you just, I guess, give us an idea of how the drugs stack up beyond Lomecel-B, obviously, being in a more advanced stage. Specifically, I guess, if there are any key differences in the signaling profiles that might provide a competitive advantage. And then further, given that you are in a potentially pivotal trial, does this provide some additional validation for stem cells as a modality in HLHS overall?

Nataliya, do you want to take a first stab on this one? I'm happy to add also from a competitive standpoint.

Sure. The Mesoblast study in Boston Children Hospital, which was just published, even though involve keeps this with HLHS, it's a different degree of HLHS, and they inject stem cells into the left ventricle. So they just basically try to regenerate left ventricle. So the severity of the – of those cases are slightly different. So even though is the competitor and it seems like the same disease is not. So the mechanism which we are trying to achieve, long-term survival and transplant-free survival, is injected into the right heart and to increase the right injection ventricle function, which is surrogate endpoint, post surrogate endpoint for the long-term great outcome. So again, it is the same disease, but the severity and the safety and the keys to this disease are slightly different. I hope I did address that part of the question. And Wa'el, maybe you can continue.

Yes. I would just add that I really – although it is very hard to speculate why Mesoblast made the decision. But I really believe that their approach is very different than our approach. We are there to go as an adjunct therapy to the current standard of care. We are on a much more advanced stage. And I also believe there could be also with the type of data that we have presented so far, that this is going to get more people to be excited about that view. But I do believe that we are ahead of them from the clinical development standpoint and even the possibility of validating our mechanism as well, Michael.

Yes. Thank you. That's certainly extremely helpful.

Thank you. Our next question is from the line of Brad Sorensen with Zacks Research. Please go ahead.

Yes, thank you. Good to talk to you guys and good presentation. I just wondered if I can get a little more color on the progress of the Alzheimer's research, it seems like there have been some pretty positive results from that. And I just wondered if you were – you said you were looking for additional partners and funding. Is that on the back burner until you get that funding? Or are you going to continue the research while concurrently with looking for that funding? Just a little more color on that would be appreciated.

I'll take that question. So Brad, we realized that advancing our work. First, I want to say that we are extremely excited and happy with the results that we have seen out of the CLEAR MIND trial. This Phase 2a have really showed, I would say, a signal that, that definitely getting everybody and we have reviewed this with thought leaders in the scientific community. And I think everybody agrees that further development and progress of this program and Alzheimer is warranted. And with that, we want to get into being more pragmatic and practical here. And there is a lot of – what are we doing? We are pursuing possibly a partnership, business through a business development opportunity or a partnership. We're also evaluating. There is a big, as you know, available public funding and private funding actually for that matter to support the development of medicines to treat Alzheimer's disease. It is one of the biggest public health crisis that we have faced in recent years, and there is a lot of people who want to put money. So what we're doing is we're pursuing the two parallel paths, and we are trying to secure funding. We're also doing a lot of analysis of our data and formulating our opinion of the possible design of the next trial and the progress. So we are not slowing down or not doing anything. But we're definitely trying to do this in a very responsible and financially responsible and focus our resources on the areas where it brings the fastest and the greatest return on investment. I have no doubt that we will continue developing our program for Alzheimer's disease, and we'll continue to do all the setup work that is needed. And we will vigorously pursue partnership and other sources of funding like non-dilutive funding and so on.

Okay, thank you. Yes, yes, the positive results, and like you said, it's a major problem in the United States. So I just wanted to – I think you should be able to find partners. So I just want to make sure we're going to continue the progress that we're seeing on that. So I appreciate it.

Yes, definitely. Vigorously seeking partners, I would say.

Thank you. As there are no further questions, I would now hand the conference over to Wa'el Hashad for his closing comments.

All right. Well, thank you, everyone, for attending today's call. On behalf of Longeveron, I would like to thank you for your continued interest and support and wish you a good day today. Thank you.

Thank you. The conference of Longeveron has now concluded. Thank you for your participation. You may now disconnect your lines.