Carl Spana
Analyst · risks and uncertainties discussed in the company's most recent filings with the Securities and Exchange Commission. Please consider such risks and uncertainties carefully in evaluating these forward-looking statements by Palatin's prospects. Now I would like to turn the call over to our host Dr. Carl Spana, President and Chief Executive Officer of Palatin. Please go ahead
Thank you, Steve. Fiscal 2024 was an exciting year for Palatin with significant growth in all of our pipeline programs. Results confirm that targeting the melanocortin system can result in safe, effective and differentiated therapeutics that can improve patients' lives and address unmet market needs. Today, I will review some of the significant achievements for each of our therapeutic areas. Since Steve has already covered the sale of Vyleesi to Cosette, I'm going to move on and start with some of our ocular programs. We have multiple ocular programs that have made significant progress over the past year. PL9643 is Palatin's topically administered product for treating the signs and symptoms of dry eye disease. We successfully completed the first Phase III trial, MELODY-1 and announced positive results earlier in the year. Current FDA-approved treatments for dry eye disease have three significant problems that limit their utility. They have poor ocular tolerability, lack broad efficacy and they take a long time to have symptom relief. The results of MELODY-1 clearly demonstrated that PL9643 is a truly differentiated treatment for dry eye disease that solves the three main problems of current treatments. The PL9643 MELODY-1 trial showed that PL9643 had excellent ocular tolerability, broad efficacy in multiple signs and symptoms and demonstrated efficacy as early as two weeks. With this emerging product profile, PL9643 has the potential to be the leading treatment for dry eye disease. In summary, in the MELODY-1 Phase III trial results compared to view control included the following. PL9643 achieved statistical significance for the co-primary endpoints of ocular pain in seven of the secondary symptom endpoints, including eye dryness and ocular discomfort. To the best of our knowledge, no FDA-approved treatment for dry eye disease has shown such broad effect on the symptoms of dry eye disease. For inferior corneal fluorescein staining, which is a sign, which we have agreement with the FDA that this will be the primary sign endpoint for the next Phase III trial and PL9643 also achieved statistical significance at the two-week time point in MELODY-1. PL9643 positive effects on the signs and symptoms of dry eye disease were rapid with efficacy at two weeks after starting treatment and they continue to improve over the 12 weeks of the treatment. PL9643 has excellent ocular tolerability with no subjects discontinuing the study due to an ocular adverse event. Data for approved dry eye disease treatment shows that a lack of efficacy and poor tolerability, such as burning, blurry vision, bad taste, stinging has led to a significant amount of patients dissatisfaction and high discontinuation rates. In a recent Type C meeting, the FDA agreed with our plan for the remaining activities required to file a new drug application with the FDA for approval of PL9643 as a treatment for the signs and symptoms of dry eye disease. Specifically, we have FDA agreement on our protocols, a number of subjects, the primary sign and symptom endpoint and our statistical analysis plan. We are ready to complete the PL9643 Phase III program with all remaining clinical studies to be conducted and completed in calendar year 2025 and an anticipated NDA filing in the first half of calendar year 2026. Our two other ocular programs also made substantial progress in fiscal '24. PL9588 is our topically administered treatment in the development to treat glaucoma. In the last year, we completed a comprehensive evaluation of PL9588 in multiple preclinical glaucoma models. Results indicate that PL9588, not only lowers intraocular pressure, but also provides direct neuroprotection. Direct neuroprotection of the optic nerve is a significantly differentiating factor over current treatments for glaucoma and PL9588 is now ready to begin the IND-enabling studies with clinical trials beginning in calendar year 2025. Retinopathies are a broad category of ocular diseases that cause damage to the retina and can lead to vision loss. The global market for treatment is estimated to be approximately $30 billion by 2030. PL9654 is our novel differentiated treatment for various retinopathies. In fiscal 2024, we completed an extensive evaluation of PL9654 in multiple models of retinal disease. PL9654 demonstrated the ability to preserve vision, protect the retina from damage and a genomic analysis positively affected multiple pathways that are known to be involved in the progression of retinal diseases. We also made substantial progress in the development of intravitreal injectable formulation and PL9654 is now ready to enter into IND-enabling studies starting in calendar 2025. Now I'll move on to our MCR4 melanocortin-4 receptor obesity program. Drug treatment for obesity is now established and growing rapidly. We have multiple drugs with different mechanisms of action that affect weight loss and importantly, weight loss maintenance are needed. Because of the important role of the MCR4 receptor plays in regulating stored energy and food intake, we strongly believe that MCR4 agonist will be an important part of the future of obesity treatment and weight loss management. Palatin has a long-standing research effort to develop melanocortin therapeutics that selectively activate MCR4 receptor as treatments for obesity and weight less maintenance. With our extensive experience in the design and development of melanocortin agonist for treating obesity, including two clinical studies previously completed and published, we are well positioned to be a leader in the development of melanocortin-based therapeutics for weight loss and weight loss maintenance. As I'm sure you all know, incretin-based therapeutics, such as Zepbound and Wegovy are the primary treatment for obesity and they have demonstrated impressive growth. However up to 67% of patients that began treatment discontinue in the first year, mainly due to side effects and a plateau effect and they often quickly regain the weight that they have lost. Additional approaches are needed to provide patients an opportunity to safely and tolerably reach their weight loss goals. Research by Palatin and academic groups indicate that combining MCR4 receptor agonist with the GLP-1 receptor agonist like tirzepatide may result in synergistic effects on weight loss, allowing for increased or sustained weight loss at lower and better tolerated doses. To investigate the potential additive effects of combining MC4R receptor agonist with a GLP-1 receptor agonist, we initiated a Phase II clinical study in August. In the study, obese subjects will co-administer the MCR4 receptor agonist bremelanotide along with tirzepatide. The study is designed to enroll approximately 60 obese subjects at four sites in the US. The primary endpoint is to demonstrate the safety and increased efficacy of the coadministration of bremelanotide with tirzepatide on reducing body weight over just tirzepatide alone. Patients will be treated with weekly tirzepatide for four weeks having eligibility confirmed and then randomized to one to four treatment arms, which consist of weekly and daily study drug, including weekly tirzepatide and daily bremelanotide. Patients will undergo multiple assessments of safety and efficacy to help profile the effectiveness of bremelanotide in treating general obesity as a stand-alone treatment or in conjunction with GLP-1 therapy. This study will be completely enrolled this quarter with data in the first quarter of calendar 2025. We've also developed next-generation highly selective melanocortin-4 receptor peptide agonist as well as small molecules for the treatment of obesity and weight loss maintenance. Our new MCR4 receptor peptide agonist are highly selective for the MCR4 receptor versus the MCR1 receptor and are not anticipated to have skin darkening as a side effect. They're designed using a proprietary technology to have once a week dosing. We anticipate final lead selection in the first quarter of calendar 2025 with an IND and first-in-human clinical studies in the second half of calendar 2025. Now we'll move on to our work in sexual dysfunction. Our research in the use of melanocortin agonist to treat various male and female sexual dysfunctions has led to the development of a novel product that is a co-formulation of bremelanotide and a phosphodiesterase-5 inhibitor those are compounds such as Viagra and Cialis. We believe this product could be an ideal treatment for the 35% of men with erectile dysfunction that have an inadequate response to PDE-5 inhibitor therapy. These patients have limited options and represent a large underserved market. We have initiated a development and clinical program for the evaluation of bremelanotide coformulated with the PDE-5 inhibitor for the treatment of erectile dysfunction in patients that are nonresponsive to PDE-5 inhibitor monotherapy. A pharmacokinetic study is expected to initiate in the first half of calendar 2025 and patient recruitment in a Phase II clinical study is anticipated in the second half of calendar 2025 with top line results in 2026. The final program I want to cover is our PL8177 for ulcerative colitis, which is in a Phase II study evaluating oral PL8177, a selective melanocortin-1 receptor agonist in ulcerative colitis patients. The study is nearly completed enrollment and we expect data from the interim analysis later this quarter. In support of the oral PL8177 program, our preclinical studies demonstrated that treatment with oral PL8177 causes disease colons to improve toward a healthy state and to resolve inflammation. Resolving inflammation rather than blocking it provides the possibility of efficacy, coupled with significantly differentiated safety in treating colitis and inflammatory bowel diseases. As we look forward, we want to continue to build on the successes of the past year by focusing on the continued development of our key programs in obesity and dry eye disease. And importantly, collaborations and partnerships for our dry eye disease program or other ocular programs in glaucoma and retinopathies and our ulcerative colitis program. Upcoming milestones and activities for our novel and differentiated programs include the following. For MCR4 obesity program, we want to complete the Phase II study evaluating the coadministration of bremelanotide and tirzepatide and we expect to have the data reported out in the first quarter of calendar 2025. We also are on track to advance our selective MCR4 long-acting peptide agonist through first in-human studies and positioning the program for a Phase II dose-ranging efficacy during calendar year 2025. For our dry eye disease program, we want to start and complete the Phase III trials MELODY-2 and MELODY-3 with beta expected by calender year-end 2025. And also we want to complete all manufacturing activities needed to file a new drug application with the FDA in the first half of calendar 2026. To facilitate moving this program forward, we are in active discussions with potential corporate collaborators and funding partners. For our male sexual dysfunction program, we want to get our pharmacokinetic study started and completed in the first half of calendar year 2025 and begin patient recruitment in a Phase II/III study, which is anticipated to start in the second half of calendar 2025. Importantly, we have also increased our business development activities to support the licensing of our major programs as well as our earlier pipeline programs. Steve and I and the whole Palatin team are extremely excited and enthusiastic by the potential of these programs to bring novel, innovative treatments to improve patient lives and address significant unmet medical needs. I'll now turn the call over to questions.