Andrew de Guttadauro
Analyst · H.C. Wainwright
Thanks, Tom, and thanks to all who have joined us on today's call. I'd first like to touch on some of the recent progress in our IRENE and GOBLET trials, which are examples of how we're collaborating with industry leaders to develop pelareorep in combination with checkpoint inhibitors and expand its potential therapeutic impact. As you may recall, IRENE is a Phase II trial evaluating pelareorep in combination with Incyte's PD-1 checkpoint inhibitor retifanlimab in metastatic triple-negative breast cancer. At the most recent San Antonio Breast Cancer Symposium in December, we are pleased to report that the combination is well tolerated in each of the 5 patients enrolled at that point in the trial. The trial remains ongoing and we look forward to its continued progress. We also recently provided a positive safety update from our Phase I/II GOBLET trial, which is a valued pelareorep in combination with Roche's PD-L1 inhibitor, atezolizumab, in patients with advanced or metastatic pancreatic, colorectal and anal cancers. We were pleased to report in February that an independent review of the trial's pancreatic cancer safety run-in noted no toxicity concerns and that the Data Safety Monitoring Board recommended the trial proceed as planned. The trial also includes a safety run-in for its third line metastatic colorectal cancer cohort, which remains ongoing with an update expected in the first half of the new year. Now one point I'd like to emphasize is how IRENE and GOBLET takes a similar approach to try and address the pressing unmet need. While checkpoint inhibitors have been commercially successful, less than 1 in 5 patients respond to these therapies due to several different resistance mechanisms that can be addressed by pelareorep's clinically demonstrated immunotherapeutic effects. As Tom mentioned earlier, pelareorep has shown the ability to remodel the tumor microenvironment, causing PD-L1 upregulation in addition to increase in CD8+ cells and memory T cells. Outcomes like these are appealing to industry leaders because pelareorep has demonstrated it can increase the proportion of patients eligible for therapies like checkpoint inhibitors and increase the benefit derived from combination therapies. The ultimate goal is to secure a global clinical and commercialization partnership and past deals have typically been preceded by research collaborations similar to the trials Tom and I have discussed on this call. Next, I'd now like to provide another update on the additional progress made since our Q3 call with Adlai Nortye, our partners working to develop and commercialize pelareorep in China, Hong Kong, Macau, Singapore, South Korea and Taiwan. In October, Adlai dosed the first patient or bridging safety trial, evaluating the safety, tolerability and preliminary pelareorep-paclitaxel combination therapy in Chinese patients with advanced or metastatic breast cancer. This trial follows the design that's similar to the pelareorep-paclitaxel cohort in IND-213. Now in January, Adlai announced that they had advanced the second dose escalation cohort of the trial. This is significant because the second dose cohort is equivalent to what was administered to patients in IND-213, which showed a near doubling of survival in metastatic HR+/HER2- breast cancer patients. The initiation of this cohort is an important step that reflects the positive safety findings from the trial's first dose escalation cohort where no toxicity concerns were noted. The ultimate goal of the bridging trial is to satisfy Chinese safety requirements and thereby accelerate pelareorep's development in Adlai's principal jurisdiction. Subsequent studies will include data from IND-213 and BRACELET-1 in future regulatory submissions and trial design decisions. Data from these studies and regulatory requirements from the Chinese authorities will dictate what a Phase III study will entail as the Phase III design has not yet been determined. Results from BRACELET-1 will factor heavily when considering whether a checkpoint inhibitor will be included in the Phase III study in China. Pelareorep's advancement in these jurisdictions is significant as China alone has the world's second largest pharmaceutical market with rapid growth expected over the coming years. By leveraging our partnership with Adlai, we have positioned ourselves to capitalize on the significant market opportunity with minimal risk and clinical costs. Finally, before I hand the call over to Kirk, I'd like to reiterate a point Matt made earlier regarding our efforts to develop pelareorep as an enabling technology for therapeutic agents beyond checkpoint inhibitors. To efficiently pursue this goal, we are seeking high-quality partners to lead this development pathway and assume its associated costs. We are supported in these efforts by emerging preclinical data and our clinical results, demonstrating pelareorep's ability to reverse immunosuppressive tumor microenvironments and recruit cancer-finding T cells into tumors. These have led to collaborations by technology companies and key opinion leaders of premier academic institutions. Since I've discussed positive safety readouts for TNBC and gastrointestinal cancer plus a pelareorep dose escalation in breast cancer today, I'd like to take a moment to remind our investors that pela's favorable safety profile is an important factor when we have discussions with new and existing biopharma partners. Being able to provide clinical safety data across multiple indications and tumor targets, in addition to combinations of multiple oncology therapies broadens the overall addressable market opportunity for pelareorep. As such, it shows the pharma world that pelareorep really does have the potential to be an immunotherapy backbone since it is so versatile. While we are eager to see data from these collaborative efforts generate, we remain steadfastly committed to preserving the company's primary focus on our lead breast cancer program and the execution of our stated clinical objectives. Our relationships with distinguished collaborators such as Roche, Pfizer, Merck Serono, BMS, Incyte and Adlai Nortye, helped to maintain this focus and should serve us well as we work to execute on our goals. We look forward to the continued maturation of these relationships, which together with our talented team and robust data set leave us well-positioned for sustained success. With that, I'll turn the call over to Kirk Look, our CFO, to discuss our financial results for the fourth quarter. Kirk?