David Mazzo
Analyst · Dawson Securities. Your line is open
Thanks, Joe. Let me begin by providing a summary of the basis of our CD34 positive cell therapy platform. To repeat my comment from previous quarterly call, our CD34 positive cell technology has led to the development of therapeutic product candidates designed to address diseases and conditions caused by ischemia. The condition in which the supply of oxygenated blood to healthy tissue is restricted. Previously published animal and human studies have demonstrated that the administration of CD34 positive cells induces angiogenesis of the microvasculature that is that these cells prompt the development of new blood capillaries thereby contributing to the prevention of tissue death by facilitating blood flow to the area of ischemic insult. We believe that several conditions caused by underlying ischemic injury can be improved through the application of our CD34 positive cell technology, including but not limited to critical limb ischemia, coronary microvascular dysfunction and refractory angina. Now to the specifics of our three CD34 development programs, beginning with our most clinically advanced CD34 positive cell therapy product candidate in the U.S., CLBS14. CLBS14 is being developed to address no option refractory disabling angina by stimulating the growth of new microvasculature in an oxygen deprived heart in those patients who have had large vessel disease treated with all available therapies, but still have debilitating angina. Our confidence in this program is based on a series of published Phase 1, 2 and 3 study results that indicate a consistency of therapeutic effect of CD34 positive cells to increase exercise tolerance, reduce incidence of angina and decrease long-term mortality associated with the condition. Since acquiring the rights to the data and regulatory filings for CLBS14, we have successfully reactivated the IND and received Regenerative Medicine Advanced Therapy or RMAT designation from the FDA. The RMAT designation affords us the opportunity to work with FDA to advance more rapidly and efficiently the development of this therapeutic candidate in an indication that currently has high morbidity and no effective treatment options. Additionally, as I mentioned at the outset of this call, we have now finalized the protocol design for confirmatory Phase 3 trial to support the registration of CLBS14 for NORDA in the United States. CLBS14 is to be studied in a prospective randomized double-blind placebo-controlled clinical trial with an un-blinded 6-month open-label standard of care arm to determine the efficacy and safety intramyocardial delivery of autologous CD34 positive cells for increasing exercise capacity in subjects with NORDA. The study will enroll three arms and approximately 400 subjects. There are about 200 subjects targeted in the active arm, about 150 subjects in the placebo arm and another approximately 50 subjects in the standard of care arm. Subjects randomized to standard of care will have the option to crossover to open-label treatment following their 6-month follow-up visit. The primary endpoint of this study is improvement in total exercise time at 6 months with several secondary endpoints identified, including reduction in angina frequency. Our current plans target initiation of enrollment in the Phase 3 study in the United States in early 2020, we expect the study to take about 2.5 years to fully enroll utilizing about 35 sites in the U.S and perhaps Canada. With a 6-month follow-up primary endpoint, top line data is projected about 3 years from first object treatment. As Joe just mentioned, we project that external cost for the study will be approximately $70 million over a 3 to 4 year period, including the preparation and initiation costs that we are currently incurring. Moving to our CD34 positive cell therapy product nearest to commercialization, CLBS12 in Japan. Among others our CD34 positive cell technology has spawned the development of CLBS12, a product candidate for the treatment of critical limb ischemia or CLI, which is currently in an ongoing registration eligible clinical study in Japan. CLI is a severe obstruction of the arteries that significantly reduces blood flow to the lower extremities principally the feet and legs and represents the end-stage of peripheral arterial disease. CLI patients often experience severe rest pain, limited mobility, non-healing skin ulcers, and if not successfully treated, eventual amputation. As I highlighted earlier, the European Medicines Agency recently granted advanced therapy medicinal product classification to CLBS12 for the treatment of CLI. Advanced therapy medicinal products are defined as medical treatments that are based on genes or cells and are intended as long-term or permanent therapeutic solutions to acute or chronic human diseases, add a genetic cellular or tissue level. This regulatory achievement sets the stage for us to work closely with European regulators to define the most expeditious development and regulatory plan to registration for CLBS12 in the EU. As a reminder, CLBS12 was previously awarded a Sakigake designation from the Japan Ministry of Health, Labor and Welfare for the treatment of CLI. Importantly, the Sakigake designation is akin to an RMAT designation in the United States and affords the recipient prioritized regulatory consultation, a dedicated review system to support the development and review process, as well as reduced review time from the typical 12 months down to six months for the CLBS12 registration application once filed. Additionally, CLBS12 is eligible for early conditional approval and possibly full approval based on the compelling nature of the complete data from our ongoing prospective randomized controlled open-label multicenter study in CLI patients in Japan. The ongoing study comprises subjects divided into two cohorts, a 30 subject group with traditional arteriosclerotic CLI and a 6 subject group with Buerger's disease, a specific type of CLI often associated with heavy smoking. Those subjects who are randomized to treatment are dosed with CLBS12 through intramuscular injection in addition to receiving standard of care pharmacotherapy. Subjects randomized to the control arm only receive standard of care with drugs approved in Japan, including antiplatelet agents, anticoagulants and vasodilators. The choice of which is made by the investigators according to the protocol. The study allows for the rescue of subjects in the control arm by indicating the crossover to treatment if the CLI is deemed to be progressing. The primary objective of this study is to show that CLBS12 can prevent the serious consequences of CLI by reverting the patients to a CLI free condition through improved blood flow in the affected limb. CLI-free status is defined as two consecutive monthly visits, in which rest pain is absent and previous non-healing skin ulcers are completely healed as determined by independent adjudication committee. As previously reported, and as you can review in our corporate presentation on our company website, the initial responses observed in the fully enrolled Buerger's disease cohort are very positive and consistent with the positive therapeutic effect and safety profile as reported by previously published clinical trials in Japan and the U.S. In Buerger's disease where amputation and often death are likely outcomes and where no available pharmaco therapies prevent amputation, we are thus far observing a remission rate that is extremely encouraging with several patients still in follow-up. It is worth repeating that the natural history of Buerger's disease patients is continued disease progression leading to likely amputation. We are very encouraged by these early results and believe that if maintained they suggest a positive outcome for the overall trial recognizing, however, that the final conclusions of the trial will be dependent on all data from all subjects. We expect to report data from the completed study in mid-2020. As to cost, we project that we will incur less than $5 million of additional expenses to finish this study and these expenses are included in our budget projections. Regarding commercialization, our strategy remains to license CLBS12 for sale in Japan. To that end, our conversations continue with prospective partners and we continue to seek to consummate a deal in concert with the completion of the study. Finally, previously published work including a study in the United States showing an improvement in amputation free survival and our progress in Japan combined with a high degree of interest and enthusiasm from U.S and European CLI experts, has prompted us to consider the initiation of CLBS12 development in the U.S and Europe prior to the completion of the study in Japan, dependent upon the identification of the corresponding capital necessary to fund such a study. Turning now to our CD34 product candidate as a treatment for coronary microvascular dysfunction or CMD. Like all our CD34 positive cell therapy development candidates, CLBS16 uses a proprietary and patented formulation of CD34 positive cells, specifically designed for an injection at or near the site of ischemic insult, which in the case of CMD, is an infusion into the coronary artery. CLBS16 is currently being studied in the ESCaPE-CMD trial, a 20 patient proof-of-concept clinical trial evaluating CLBS16 as a treatment for coronary microvascular dysfunction and ischemic heart disease without discernible large vessel blockages. It should be noted that CMD is more frequently encountered in females making this a women's health issue of emerging notoriety and significance. CLBS16 is designed to address the symptoms and physiology of CMD by employing the CD34 positive cells innate ability to increase microcirculation. As we communicated on previous calls, most of the costs associated with the ESCaPE-CMD trial are covered by a grant from the NIH. And as such, the funding of this trial to completion is included in our budget projections. Similar to the results of our CLI study in Japan, the preliminary data observed in the ESCaPE-CMD open-label study comprising those subjects who have reached the 6-month follow-up visit are extremely encouraging. With results from about one-third of the patients reported, we are observing a statistically significant improvement in coronary flow reserve, a direct measure of cardiac muscle perfusion along with the corresponding improvement in clinical symptoms. Of course, the final outcomes of the trial will be dependent on the 6-month data from all subjects. The results from this trial are not only important for defining the next step in development for CLBS16, but they provide the first direct quantitative evidence in humans corroborating the mechanism of action of CD34 positive cells, something which is supportive of all of our program, but especially of CLBS14. We are looking forward to reporting data from the completed study at the end of 2019 or in early 2020. In closing, we are pleased to share our progress this quarter and to demonstrate continued execution against our stated objectives. Our financial position remain stable. Our pipeline programs are progressing well and with three CD34 positive cell therapy product candidates, we’ve a development pipeline comprising multiple mid and late stage projects. Caladrius continues to make measurable progress advancing its development programs and we are pleased to have accomplished the goals we established for the past quarter. Our experienced and expert team remains committed to the efficient and effective advancement of our program, as we work to bring innovative treatment options to patients in need and restore human health. And with that overview, operator, we are now already to take questions.