Dave Luci
Analyst · H.C. Wainwright. Please proceed with your question
Thanks, Rob. Good morning, everyone, and thanks for joining us to review our financial results for the first quarter of '23 and to cover some recent updates, then we'd be pleased to take any questions. In the first quarter, we continued to enroll more patients in our Phase 2b clinical trial of our oral ibezapolstat, our lead antibiotic candidate for the treatment of patients with C. difficile infection although 2b trial is a randomized 1:1 non-inferiority double blind trial of oral ibezapolstat compared to oral vancomycin, a standard of care to treat C. difficile infection. The primary endpoint is clinical cure at the end of treatment and a secondary endpoint is sustained clinical cure measured at day 38 follow-up visit. Since this is a double-blind trial, results won't be known until the end of the trial. However, operationally, the trial is proceeding as expected with no safety signals reported to date and the blinded observed data has been exceptional. The phase 2b trial protocol includes an exploratory endpoint comparing the impact on the microbiome between ibezapolstat and vanco. In the event non-inferiority of ibezapolstat to vanco has demonstrated further analysis will be conducted to test for superiority. Due to slower than enrolment expected during the COVID-19 and its aftermath, we expanded the number of clinical trial sites participating in the Phase 2b trial from the initial 12 sites to now we have a total of 28 trial sites. Most importantly in March 2023, the FDA accepted our protocol amendment to our IND, which will allow an independent data monitoring committee, which we've assembled to review interim clinical data upon reaching 36 patients enrolled and then to provide its recommendation either to early terminate the 2b trial as we had done with the 2a trial, you may recall, or alternatively continue enrolling. We anticipate completing enrollment of the 36 patients in the second half of '23. The company intends to report available data properly after the IDMC conducts this interim review. The company has - we remain particularly excited about the dual impact of ibezapolstat to treat C. diff infection while appropriately managing the long term care of each patient's microbiome, which we believe is exceptional for antibiotic therapy. Other key highlights from the first quarter of '23 or in some cases shortly thereafter include the following. In April '23, two presentations were made at the 33 Annual ECCMID Conference in Copenhagen, Denmark. First, a scientific poster entitled "Novel Pharmacology and Susceptibility of Ibezapolstat Against C. difficile Isolates with Reduced Susceptibility to C. difficile-directed Antibiotics" was presented by Dr. Kevin Garey, Professor and Chair, University of Houston College of Pharmacy, and Principal Investigator for microbiome aspects of our ibezapolstat clinical trial program. Dr. Garey's work demonstrated that it ibezapolstat's mechanism of action is not only bacterial target to C. diff but also inhibit some of its virulence mechanisms, meaning its capability to cause disease. Dr. Garey also noted that C. difficile strains will reduced susceptibility to metronidazole, vanco and fidaxomicin were in fact susceptible to ibezapolstat. Ibezapolstat's anti-virulence effect, namely reduced flagellar movement of the C. diff organism was a positive unexpected finding reflecting the unique mode of action in inhibiting DNA pol IIIC. The second of the two ECCMID Presentation was by our Chairman, our Executive Chairman, Bob DeLuccia, who presented an update regarding the company's preclinical systemic oral and IV program for treatment of other gram positive infections caused by MRSA, VRE and DRSP at the pipeline corner, featured session at ECCMID organized by Dr. Ursula Theuretzbacher, a world renowned microbiology expert in antibacterial research. Following the clinical validation of the pol IIIC bacterial target in our Phase 2a trial showing 100% cures with no re-infections, we've made significant improvements in cytotoxicity, solubility and protein binding in vitro, and in vivo safety and have demonstrated oral and IV efficacy in a number of mouse infection models. Both the poster and the presentation are available on our website. Additionally, we wanted to mention Dutch sponsorship, the company has continued its R&D collaboration with Leiden University Medical Center in Holland under a previously awarded grant from the Dutch government of approximately a $0.5 million to further evaluate the mechanism of action of our inhibitors against the DNA pol IIIC enzyme which is the bacterial target of our antibiotic pipeline for the systemic treatment, IV and oral of gram positive bacterial infections. Data generated from this program was critical to include in a recent non-dilutive grant application to CARB-X, which I'll describe in more detail in a moment. But based on this successful collaboration, we're hoping to receive an additional two-year grant for more research in this regard, which if it comes through, we're expecting in the middle of the year and it would be in the range of $800,000 for this second component. Let's now turn to CARB-X. We remain in the running for funding our second antibiotic candidate targeting the treatment of MRSA infections by CARB-X and we expect a final decision no later than October of this year. Just to reflect on how this came about in October of '22, we applied to CARB-X for a non-dilutive grant of up to $11.3 million which if approved would provide funding for our second antibiotic program targeting MRSA infections for a period of five years up to the start of Phase 2 clinical trials. CARB-X recently informed us that our application is in the active review pool and the final decision is to be rendered by CARB-X no later than October 23. We believe that based on our recent development progress and the unique nature of having a new class of antibiotics together with our understanding that CARB-X already made final decisions on most candidates, we remain under active review. For these reasons, we believe we have a strong possibility to gain CARB-X approval for funding later in the year. If approved, CARB-X will fund the $11.3 million of a $16 million project and that would cover oral and IV formulations of our second antibiotic candidate ACX-375. Now just looking ahead a bit the AMR Congress later this year in September, the World-Antimicrobial Resistance Congress will convene its annual meeting in Philadelphia, where experts in the field from both public and private sectors weigh in on the latest innovations to address AMR. Our Executive Chairman Bob DeLuccia was invited to and will speak at the Innovative showcase section of the conference and will present an update entitled novel DNA poly IIIC inhibitors for gram-positive bacterial infections preparing for the next pandemic. After the presentation, it will be available on our website. Also looking ahead a bit, we'd like to mention the PASTEUR Act. Last month, U. S. Senators Michael Bennet from Colorado and Todd Young, reintroduced the PASTEUR Act, pioneering antimicrobial subscription is to end up searching resistance. To encourage innovative drug development targeting the most threatening infections, improve the appropriate use of an antibiotics and ensure domestic availability of antibiotics when needed. According to Senator Bennett, the bipartisan PASTEUR Act is the strongest bill ever written to strengthen antibiotic development and use. It will fix our market failures, expand the pipeline for next generation antibiotics and save lives. If approved, PASTEUR Act has the potential to enhance the commercial prospects for our antibiotics by providing funding for our Phase 3 clinical trials in stockpiling our antibiotic at public health facilities in the U.S. each year for 5 to 10 years, as currently drafted designation as a critical need antimicrobial under the PASTEUR Act if approved would apply to sponsors of antibiotic candidates, which are a new class of antibiotics and that target a treatment of serious or life threatening infections as is the case with our lead antibiotic candidate ibezapolstat. Accordingly, we're quite enthusiastic about the prospects of the PASTEUR Act being passed into law. Now back to our CFO, Rob Shawah, to guide you through the highlights of our financial results for the quarter. Rob?