Jonathan Solomon
Analyst · Ladenburg Thalmann
Thank you, Marina, and good morning, everyone. I'm pleased to report that we continue to make significant progress in our BX004 program. We are delighted to update that patient screening for Part 2 of our Phase 1b/2a study has been completed, with patient enrollment expected to exceed original estimates, reflecting solid execution by our clinical operations team, along with a growing awareness among physicians and patients within the cystic fibrosis community [ and ] the potential of this innovative program.
I'm also pleased to announce that BX004 has just received Fast Track designation from the FDA, which provides further recognition that the BX004 program is addressing one of the most serious and challenging unmet medical needs facing the CF community. The FDA defines addressing a significant unmet medical need as providing a therapy where none exists, or providing a therapy which may be potentially better than available therapies. The benefit of Fast Track designation include, but are not limited to, early and frequent communication with the FDA throughout the entire drug development and review process.
In addition, Fast Track designation means that BX004 may also be eligible for rolling submission and priority review of Biologics License Application and/or new drug application, which assures that questions and issues are resolved [ quicker ], often leading to earlier drug approval and access by patients. As a reminder, BX004 is being developed for the treatment of chronic Pseudomonas aeruginosa, or PsA, pulmonary infections in patients with cystic fibrosis.
In February 2023, we announced positive results from Part 1 of the trial, which came in better than expected based on the treatment arm displaying notable reductions in PsA bacterial burden. Following this announcement, in June we had the opportunity to formally present these data during the late-breaking session at the 46th European Cystic Fibrosis Conference or the ECFC, which is an important international conference that attracts a wide audience of CF thought leaders, advocacy groups and patients.
I can say unequivocally that physicians were excited with the notable reduction in bacterial burden displayed in Part 1 of our study, and we came away from the ECFC meeting with the impression that chronic PsA pulmonary infections continue to pose a challenging unmet need for CF patients today. We therefore believe that BX004 is one of the few and most promising early clinical candidates for treating these infections in CF patients.
With our patient screening efforts now complete, we estimate a 4- to 6-week delay in our top line results for Part 2 of the study, now expected to be announced in November of this year. Under the Part 2 study design, at least 24 CF patients receive BX004 twice a day, but over a longer 10-day treatment period compared to Part 1. Similar to Part 1, results from Part 2 are intended to provide additional data on safety and reduction in PsA bacterial burden, along with other exploratory endpoints. Assuming positive results from this larger CF study group, we anticipate holding a meeting with the FDA to plan the next stage of BX004's clinical development.
In addition, in May 2023, we announced a second closing of a $7.5 million private placement, or the PIPE, with a select group of institutional and individual investors, which provided additional funding to support the BX004 program and other R&D activities. We also added 2 highly accomplished pharmaceutical executives to our Board, who collectively bring to BiomX considerable business and legal experience.
In summary, we are very pleased with the continued progress in the BX004 program. The feedback we're receiving from physicians, patients and other stakeholders within the CF community has been highly positive and constructive, reinforcing our view in the therapeutic potential of BX004 to treat life-threatening infection CF patients are facing. I'd like now to turn the call to Marina to review our financial results for the second quarter of 2023.