Dr. Chris Min
Analyst · Maxim Group
Thank you, Wa’el, and good morning, everyone. First, I'll begin with an update on our HLHS program. As a reminder, HLHS is a rare congenital heart defect that affects approximately 1,000 infants per year in the United States. People born with HLHS have an underdeveloped or absent left ventricle, impairing the heart's ability to pump blood. Left untreated, this condition is always fatal. The current standard of care comprised of 3 reconstructive operations before the age of 5, an extraordinary treatment burden for these young pediatric patients. Further, even with these surgical interventions, children with HLHS are at elevated risk of short-term mortality, delay development and long-term complications, including organ failure, with only somewhere between 50% to 60% surviving to adolescents. There exists a tremendous unmet need for additional interventions beyond the current standard of care, and we believe that Lomecel-B with its proregenerative, provascular and anti-inflammatory properties when administered concurrently with surgical intervention can fill that gap by improving cardiac performance in patients with HLHS. We are currently conducting a randomized controlled study in which Lomecel-B is administered to infants during Stage II surgery. Our cell product is administered in an approximately 5-minute intraoperative procedure, with injections directly into the [indiscernible]. The primary endpoint of this study is with [indiscernible] ejection fraction, consider the best functional endpoint for this condition. Based on the previous Phase I study in 10 patients with HLHS, the FDA has granted Lomecel-B rare pediatric disease, orphan drug and fast track designations for the treatment of HLHS. Next, I'll move on to our aging-related frailty program. Aging-related frailty is an age associated decline and reversal in function across multiple physiologic systems that leads to an inability to cope with stressors. This is common among the elderly, affecting millions of individuals in the United States, up to 15% of the population over the age of 65. Aging-related frailty manifests typically as a combination of several sizes and systems that may include sarcopenia or involuntary loss on muscle, the associated weakness, fatigue, weight loss, slowness and low activity. Unfortunately, elderly frail individuals are more vulnerable to poor clinical outcomes associated with aging-related frailty such as infection, [falls, factors,] hospitalizations and even death. At Longeveron, we have been evaluating the effect of Lomecel-B that it may have on the health and function of these elderly frail patients, particularly on their physical immune system function. In early stage exploratory trials, we have been using biomarkers of inflammation and vascular and endothelial function to measure this effect. Our clinical development strategy in aging-related frailty is currently focused on Japan, which has one of the oldest populations in the world. This quarter, we continue screening patients for our Phase II study evaluating Lomecel-B in patients with aging-related frailty in Japan in partnership with the National Center for Geriatrics and Gerontology and Nagoya and Juntendo University Hospital in Tokyo. The Phase II clinical trial is a 3-arm parallel design randomized, placebo-controlled, double-blind, single infusion study of 2 different dose levels of Lomecel-B. The primary objective of the study is to evaluate the safety of Lomecel-B as a treatment for aging-related frailty, with an overarching goal of providing support for an eventual limited approval under the Act on the Safety of Regenerative Medicine, or ASRM, which recognizes the tremendous therapeutic potential of cell therapies. A potential ASRM approval could enable us to enter the Japanese market based on demonstrated safety in Japanese patients with an expectation of efficacy which can be established through the conduct of a small, well-controlled trial in Japanese patients combined with our previous data in aging-related frailty. Such an approval would allow us to administer Lomecel-B as a treatment for aging-related frailty at select clinical sites, addressing a crucial unmet need amongst the Japanese population and we expect to randomize our first patient in this Phase II trial this quarter. Finally, I'd like to cover updates on our Alzheimer's disease program. In November, we were pleased to announce the completion of enrollment of our Phase IIa trial. As a reminder, this trial called the CLEAR MIND trial, is a 48-patient 4-arm parallel design, randomized and placebo-controlled trial of Lomecel-B designed to evaluate the safety of single and multiple infusions of 2 different dose levels of Lomecel-B compared to placebo in patients with mild Alzheimer's disease. Our primary endpoint is safety, as measured by the occurrence of serious adverse events within the first 30 days after the administration of Lomecel-B. Secondary and exploratory endpoints include brain volume actuary by magnetic resonance imaging, biomarkers relevant to inflammation and endothelin vascular systems and, of course, measures of cognitive function. Each patient is followed in the study for a duration of 9 months. Based on a robust study of preclinical and clinical data, we believe Lomecel-B may prevent, slow or even reverse the clinical progression of Alzheimer's disease by reducing disease-related brain information. Neuronal cell death caused by early and substantial neuroinflammation is a significant contributor to the pathogenesis of Alzheimer's disease. In preclinical models of Alzheimer's disease MSCs like Lomecel-B have been shown to cross the blood brain barrier potentially with an anti-inflammatory effect, improving endothelin function and promoting neurogenesis, the process of new neuron formation in the brain. In our previously completed Phase Ib in the study -- Phase Ib study in alzheimer's patients, we demonstrated the preliminary safety of Lomecel-B in patients with wild-to-moderate Alzheimer's disease. With this Phase IIa trial, we hope to build on this body of evidence. We expect to share the top line results in early 2024. With that, I'd now like to turn the call over to James Clavijo, our Chief Financial Officer, to discuss our financial results for the fourth quarter and full year of 2022. James?