David Luci
Analyst · H.C. Wainwright. Please proceed with your question
Thanks, Rob. Good morning, everyone, and thank you so much for joining us to review our financial results for the fourth quarter and full year 2024 and also to hear some recent updates. Then we'd be pleased to take any questions. First, I'd like to briefly summarize just a few of our key activities for the fourth quarter of '24 or in some cases shortly thereafter, which have been the most significant in our company's history as we are now finalizing preparation to advance our lead antibiotic candidate, ibezapolstat or IBZ as we call it, for the treatment of C. difficile infection into international Phase 3 clinical trials. We believe that if successful, this last set of clinical trials to complete will be pivotal to form the basis for our new drug application in the US and marketing authorization application for the European Union. In October '24, we exhibited at ID Week in Los Angeles, which was the annual scientific conference of the Infectious Disease Society of America where Drs. Garey and Eubank from the University of Houston School of Pharmacy presented a scientific poster showing that in our Phase 2b clinical trial, ibezapolstat had comparable clinical cure and sustained clinical cure rates and safety profile to vancomycin. As previously reported, the overall observed clinical cure rate in the combined Phase 2 trials, Phase 2a and Phase 2b in patients with CDI was 96% 25 out of 26 patients and importantly 100% or 25 of 25 of the IBZ-treated patients in the Phase 2 program who had clinical cure at the end of treatment remained cured through one month after EOT as compared to just 86%, 12 of 14 patients in the vancomycin treatment arm in Phase 2b. Also in a subset of ibezapolstat patients, five of five followed for three months after the end of treatment experienced no recurrence of infection. IBZ-treated patients showed decreased concentration of fecal primary bile acids and higher ratios of secondary to primary bile acids than vancomycin treated patients. According to Dr. Garey, these exciting results demonstrate two properties of ibezapolstat, which may contribute to its anti-recurrence effect. First, the preservation and restoration of beneficial bacteria classes in the gut provide resistance to recolonization by C. difficile. Second, these data presented for the first time, indicate that these beneficial bacteria known to metabolize primary to secondary bile acids persist in ibezapolstat-treated patients, providing another important mechanism to prevent recurrent CDI. In November last year, we announced sponsorship and participation in the inaugural Peggy Lillis Foundation CDI Scientific Symposium and presented an ibezapolstat Phase 2b clinical data update. In January '25, the company announced it had closed the $2.5 million registered direct offering priced at the market under Nasdaq rules. Also in January '25, we announced that we received positive regulatory guidance from the European Medicines Agency for the ibezapolstat Phase III clinical trial program, which guidance is aligned with FDA on matters of manufacturing, non-clinical and clinical aspects of the Phase 3 program. The EMA guidance also confirmed ibezapolstat's regulatory pathway for a marketing authorization application to be filed by the company after successful completion of the Phase 3 clinical trials. So now with mutually consistent feedback from both the EMA and FDA, Acurx is well positioned to commence our international Phase 3 registration program. This past February and just this month, we announced new publications in the Journal of Antimicrobial Agents and Chemotherapeutics of two very important non-clinical studies, which we believe can leverage to show further positive differentiation for competitive advantage of IBZ as compared with all other antibiotics used for frontline therapy to treat C. difficile infection. And for that matter given our clinical results to date, we're hopeful that this anti-recurrence effect of IBZ could mitigate the need for expensive microbiome therapeutic agents to prevent recurrent CDI. In February, we announced positive results from this first study conducted by Dr. Justin McPherson from the University of Houston and funded by the National Institute of Allergy and Infectious Diseases or NIAID. It was an in-silico study that predicted the microbiome-restorative potential of IBZ for treating C. difficile infection. Our scientific advisors consider this to be a major finding, which provides a mechanistic explanation for ibezapolstat's selectivity in that the predicted bactericidal interaction between IBZ and its target, the DNA pol IIIC enzyme, allows regrowth of gut microbes known to confer health benefits. The second study conducted by Dr. Trenton Wolfe from the University of Montana was funded by NIAID, the National Cancer Institute, National Center for Advancing Translational Sciences and the Company. This second study is the first ever head-to-head comparison of gut microbiome changes associated with IBZ when compared to other anti-CDI antibiotics in a germ-free mouse model. The data showed that changes in alpha and beta microbiome diversities following IBZ treatment were less pronounced compared to those observed in vancomycin or metronidazole-treated groups, complementing prior Phase 2 findings showing ibezapolstat's more selective antibacterial activity. Further, and very importantly, notable differences were observed between the microbiome of ibezapolstat and the fidaxomicin-treated groups, which may allow for differentiation of these two anti-CDI antibiotics in future studies. These results establish ibezapolstat's differentiating effects on the gut microbiome indicating a more selective spectrum of microbiome alteration compared to broader-spectrum antibiotics like vancomycin and metronidazole and a narrower spectrum of microbiome alteration compared to fidaxomicin. Also in February '25, last month, the Japanese Patent Office granted a new patent for our DNA polymerase IIIC inhibitors, which expires in December 2039 subject to extension. This constitutes a significant building block for our ongoing development of ACX-375C, our pre-clinical antibiotic candidate, targeting the treatment of MRSA, VRE and Anthrax infections. On March 10th, just a week ago, we announced the closing of a registered direct offering and concurrent private placement, raising gross proceeds of $1.1 million. We continue to identify and pursue funding opportunities for our Phase 3 clinical trial program. We have several initiatives underway to that end and hope to have subject to report in future updates. So now we've got even more momentum going into 2025 and beyond. As we have continually reported, IBZ clinical results continue to outperform in a serious and potentially life-threating infectious disease caused by C. difficile bacteria that the CDC categorize as an urgent threat and calls for new classes of antibiotics for initial treatment, but also have a low incidence of recurrence. From a regulatory perspective, FDA has granted IBZ, QIDP and Fast Track designations for the treatment of C. difficile infection. We also believe that ibezapolstat, if approved, to make a favorable economic impact by reducing the overall annual cost burden in the US for C. difficile infection. $5 billion annually, of which $2.8 billion is due to recurrent infection. And that's what our data shows we may solve for. With our continuing momentum and passion to achieve success for our stakeholders, we do believe the best is yet to come. And now back to our CFO, Rob Shawah, to guide you through the highlights of our financial results for the fourth quarter and full year 2024. Rob?