Dr. Kristen Buck
Analyst · Pete Enderlin of MAZ Partners
Thank you, James, and good afternoon, everyone. As those who have been following us know, Lisata's pipeline is built on a portfolio of proprietary and patented technology that is grounded in strong scientific rationale and a body of published preclinical and early clinical data. Our platform technology is designed to address major impediments to the successful treatment of advanced solid tumors in an environment of increasing pharmacoeconomic pressures. Generating meaningful clinical data is critically important in this field and I can assure you that our entire organization has this goal top of mind in everything we do. With that, I will now provide an overview of LSTA1 for the treatment of advanced solid tumors in combination with other anticancer agents. Despite advances in cancer therapy today, many solid tumors remain difficult to treat effectively. Cancers, such as pancreatic cancer, gastric cancers and other solid tumors are surrounded by a dense fibrotic tissue known as the stroma, which limits access of most pharmacotherapies to the tumor. Many tumors also have a hostile tumor microenvironment, or TME, which suppresses the patient's immune system and makes it less effective in fighting cancer. The combination of a dense stroma and a hostile tumor microenvironment prevents many chemotherapies and immunotherapies from being optimally effective in treating these cancers. This, coupled with the fact that most anticancer therapies are not efficient in targeting only cancerous tissue, defines the major challenge of maximizing effectiveness and safety in the treatment of solid tumors. To combat this, Lisata's approach is to activate the C-end rule or CendR system, a naturally occurring active transport system to selectively deliver anticancer drugs through the stroma and into the tumor. Lisata's lead product candidate, LSTA1, the recipient of multiple orphan designations, including for pancreatic cancer in both the United States and Europe as well as for malignant glioma in the United States is an investigational drug that actuates the CendR active transport mechanism while also having the potential to modify the tumor microenvironment and make it less immunosuppressive. LSTA1 targets tumor vascular endothelial cells as well as tumor cells themselves based on its affinity for alpha v beta 3 and beta 5 integrins that are selectively upregulated on these cells in comparison to healthy tissue. LSTA1 is a non-amino acid cyclic internalizing RGD peptide that once founded these integrins is cleaved by proteases expressed in the tumor microenvironment to release a linear peptide fragment called a CendR fragment. The CendR fragment has high affinity for and then binds to an adjacent receptor called neuropilin-1, also upregulated on tumor vascular endothelial cells and tumor cells to activate the C-end Rule active transport pathway and ferry anticancer drugs more efficiently into solid tumors. Additionally, LSTA1 has been shown in a range of preclinical models to modify the tumor microenvironment, making it less hostile to immune cells, reducing tumor resistance to anticancer medications and impeding and/or preventing the metastatic cascade. These results come internally from Lisata and from collaborators and research groups around the world and have been the subject of over 300 related scientific publications. Along with our collaborators, we also have amassed significant nonclinical data demonstrating enhanced delivery of a range of emerging anticancer therapies, including immunotherapies and RNA-based therapeutics. To-date, LSTA1 has demonstrated favorable safety, tolerability and activity to enhance delivery of standard of care chemotherapy for patients with metastatic pancreatic cancer. Our development programs are designed to exploit the potential of LSTA1 to enhance a variety of anticancer treatment modalities in a range of solid tumors. Currently, LSTA1 is the subject of about a dozen planned or active clinical trials globally for the treatment of very solid tumors. Let me touch on a few of these individually. The ASCEND trial is a 155 patient double-blind, randomized, placebo-controlled clinical trial evaluating LSTA1 in combination with gemcitabine and nab-paclitaxel in patients with metastatic pancreatic ductal adenocarcinoma, also known as mPDAC. The trial is being conducted at up to 40 sites in Australia and New Zealand, led by the Australasian Gastro-Intestinal Clinical Trials Group, or AGITG in collaboration with the NHMRC clinical trial center at the University of Sydney. As previously reported in September, a positive outcome from the planned interim futility analysis was announced by the study's independent Data Safety Monitoring Committee, which recommended continuation of the study without modification. In addition, we are excited to report that full enrollment in Cohort A of ASCEND has been achieved and that overall enrollment in the study is now approximately 95% complete. With that, we now project to have top line data from Cohort A as early as the fourth quarter of next year, a full year earlier than originally anticipated. We plan to use the results of the ASCEND trial to explore possible conditional approvals in several jurisdictions and to design an optimized Phase III program in mPDAC. The BOLSTER trial is a Phase IIa, double-blind, placebo-controlled, multicenter, randomized basket trial with investigational sites planned in the United States, Europe, Canada and Asia, evaluating LSTA1 in combination with standards of care in advanced solid tumors, including head and neck, esophageal and cholangiocarcinoma. This trial will include both cytotoxic and immunotherapy standards of care. As previously announced, patients have now been treated in the head and neck squamous cell carcinoma and cholangiocarcinoma cohorts and we expect a first patient in the esophageal cancer cohort by early next year. Cendifox, the Phase Ib/IIa open-label trial in the United States, evaluating LSTA1 in combination with neoadjuvant FOLFIRINOX-based therapies in pancreatic, colon and appendiceal cancers continues to make steady progress with approximately 80% of the overall target number of subjects in the study enrolled. We expect enrollment completion of the pancreatic cohort during the fourth quarter of this year and completion of the remaining two cohorts over the next two quarters with data readout in pancreatic cancer in late 2024. This trial will provide us with pre- and post-treatment biopsy, immuno-profiling data as well as long-term outcome data. LSTA1 is also being evaluated in combination with gemcitabine and nab-paclitaxel in a Phase Ib/IIa open-label trial in China, led by our licensee in that territory, Qilu Pharmaceutical. During the 2023 ASCO Annual Meeting, Qilu Pharmaceutical presented an abstract sharing preliminary data from the study, which corroborated previously reported findings from the Phase Ib/IIa trial of LSTA1 plus gemcitabine and nab paclitaxel conducted in Australia in patients with metastatic pancreatic ductal adenocarcinoma. Final data are expected by the end of the second quarter of 2024. In collaboration with our funding partner, WARPNINE, the iLSTA trial is a Phase Ib/IIa randomized, single-blind, single-center safety and pharmacodynamic study in Australia, evaluating LSTA1 in combination with the checkpoint inhibitor, durvalumab, plus standard of care chemotherapy, nab-paclitaxel and gemcitabine versus standard of care alone in patients with locally advanced nonresectable pancreatic ductal adenocarcinoma. Enrollment completion is expected during 2024. IGoLSTA, a Phase Ib/IIa proof-of-concept safety and early efficacy study evaluating LSTA1 in combination with nivolumab and FOLFIRINOX, as a first-line treatment in locally advanced nonresectable gastroesophageal adenocarcinoma is still pending initiation as a function of availability of funding by our partner, WARPNINE. We hope to have further update on timing related to the execution of the study in coming quarters. We are also poised to initiate the study of LSTA1 in combination with temozolomide in Glioblastoma Multiforme or GBM. This study is designed as a Phase IIa double-blind placebo-controlled randomized proof-of-concept study evaluating LSTA1 when added to standard of care temozolomide versus temozolomide and matching LSTA1 placebo in subjects with newly diagnosed Glioblastoma Multiforme. It will be conducted across multiple sites in Estonia and Latvia and is targeted to enroll 30 patients with a randomization of 2:1, LSTA1 plus standard of care versus placebo plus standard of care. We are pleased to report that the EU clinical trial application has been approved and we expect the first patient treated before the end of this calendar year. Importantly, as recently announced, LSTA1 has been granted orphan designation by the U.S. Food and Drug Administration for malignant glioma. This action by the FDA not only highlights the unmet medical need, but also recognizes the potential of LSTA1 to benefit patients in this indication. Lastly, we also plan to initiate a study of LSTA1 in combination with hyperthermic intraperitoneal chemotherapy, more commonly referred to as HIPEC, intraoperative intraperitoneal lavage in peritoneal carcinomatosis, a cancer that develops as a result of continuous spread of primary cancers such as ovarian, colorectal and appendiceal along the peritoneum. The study will be a Phase I single center unblinded, randomized controlled trial to determine the safety and tolerability of LSTA1, administered intraperitoneally in patients with peritoneal metastases from colorectal appendiceal or ovarian cancer undergoing cytoreductive surgery and HIPEC. 21 total participants will be randomized 2:1 to receive LSTA1 with HIPEC versus HIPEC alone after cytoreductive surgery. We anticipate the first patient will be treated in the fourth quarter of 2023. For those who are interested, a more complete description of each of our trials is available in the appendix section of the corporate presentation on our website. Additionally, in the body of the presentation, there are two milestone slides that depict the anticipated timing of key execution milestones and data readouts from our trials. With that, I will now turn the call back to Dave.