Marvin Slosman
Analyst · Piper Sandler
Thank you, Chuck, and thanks to everyone for joining our call this morning. I'm pleased to report that during the first quarter of 2024, we were able to sustain momentum with which we exited 2023 as we advance toward our mission to be a leader in the carotid revascularization market with our best-in-class CGuard carotid stent platform.
Craig will cover the financials shortly, but I wanted to touch on a few highlights from our first quarter performance. We generated total CGuard revenue of $1.5 million, representing growth of nearly 22% over $1.2 million that we reported in the first quarter of 2023. With our formal recertification under MDR now granted, we've derisked this topic and removed uncertainty in our ability to continue to sell in EU certified countries while also enabling our product development pipeline provided under MDR as we continue to build our OUS markets in parallel with our growing U.S. focus.
We sold 2,553 CGuard stents during the first quarter of 2024, representing growth of 25.6% over the 2,033 stents sold during the first quarter of 2023. Our real-world experience with CGuard now exceeds 50,000 stents sold to date.
Turning now to our ongoing C-Guardians pivotal U.S. trial, which is evaluating the safety and efficacy of the CGuard carotid stent system for the treatment of carotid arterial stenosis.
As a reminder, the primary endpoint of this trial is a composite of the incidence of major adverse events including death, all-cause mortality, any stroke or myocardial infarction abbreviated as DSMI through 30 days post-index procedure or ipsilateral stroke from day 31 to day 365 post procedure.
Between July 2021 and June 2023, 316 patients were prospectively enrolled in the single-arm study performed at 24 sites in the U.S. and Europe utilizing the CGuard carotid stent system, including our next-generation CGuard Prime platform. We announced recently an abstract of the 1-year outcomes from C-Guardians has been accepted for presentation at the Leipzig Interventional Course 2024, also known as LINC, which will be presented by Dr. Chris Metzger, System Vascular Chief at Ohio Health and lead investigator of the study. This presentation is scheduled on May 28 in Leipzig, Germany.
Recall that the 30-day follow-up from the trial was presented in the fall of 2023 at VIVA which demonstrated all-cause mortality, death, stroke and myocardial infarction rate of just 0.95% in the intent-to-treat analysis population and 0.63% in the protocol analysis population. We believe results like these have the potential to position CGuard with our innovative MicroNet mesh to be the gold standard in carotid implants.
Assuming the 12-month results are positive, we would be on track to submit a premarket approval application, or PMA later this year while continuing to prepare for a U.S. commercial launch in the first half of 2025 if approved. This time line is unchanged from our prior guidance. It's also worth noting that 12-month outcomes data from C-Guardians would trigger the first tranche of the transformational financing of up to $113.6 million we announced last May.
Recall that for the terms of the private placement, which was led by Marshall Wace with participation from OrbiMed, Rosalind, Nantahala, Soleus Velan and certain InspireMD Board members we received $42.2 million upfront with 4 tranches of $17.9 million, each tied to the exercise of the warrants upon achievement of prespecified milestones. The first of which is the public release of primary and secondary end points related to 1-year follow-up study results from the C-Guardian's pivotal trial.
As a brief reminder, the remaining 3 milestones that would potentially trigger subsequent funding tranches are the announcement of receipt of the premarket approval, PMA from the FDA for the C-Guardian's prime carotid stent system, which we've targeted for the first half of next year; receipt of FDA clearance for the SwitchGuard TCAR kit to include our CGuard Prime stent and the completion of 4 quarters of commercial sales of CGuard in the United States, which we anticipate in the back half of 2026.
Our plan to study and submit our SwitchGuard neuroprotection system, accessory kit and C-Guard TCAR compatible stent platform remains on track, and if cleared, will enable our offering of a complete TCAR tool set with next-generation enhancements, including the best-performing CGuard Prime implant.
As a reminder, the SwitchGuard NPS is designed to prevent embolic debris generated during a carotid stenting procedure from traveling to the brain passing the blood through an integrated filter and returning it to the patient in a closed circuit to minimize blood loss during the procedure.
As we've said before, our ongoing investments in both CAS and TCAR methods and tools, addressing the broadest patient population was done anticipating a time when technology innovation and procedural reimbursement further shifted the tides toward an endovascular first standard of care.
Last year, marked the beginning of what we believe is a shift away from surgery toward less invasive stenting procedures highlighted by CMS' final national coverage decision last October, which expanded coverage of CAS and TCAR to include both asymptomatic and standard-risk patients.
With the best-in-class implant in CGuard EPS, we believe we are very well positioned to be a leader in addressing this industry sea change. We were pleased to announce this past February that Dr. Patrick Geraghty, Professor of Surgery and Radiology at Washington University School of Medicine in St. Louis, Missouri, and Dr. Pat Muck, Program Director and Chief of Vascular Surgery at Good Samaritan Hospital in Cincinnati, Ohio, will be serving as our lead PIs.
Together, Dr. Geraghty and Dr. Muck bring a wealth of knowledge and experience in field of TCAR carotid interventions, and we're very fortunate to be able to benefit from their extensive knowledge, insight and direction as we build our leadership objectives and strategy. They join an established multidisciplinary group of thought leaders that are already providing guidance to us in these initiatives.
We've also previously announced that we entered into a strategic agreement with the Jacobs Institute of the State University of New York and Buffalo with Dr. Adnan Siddiqui, Vice Chairman and Professor of Neurosurgery to conduct an early feasibility study of CGuard Prime for severe carotid stenosis or occlusion in conjunction with thrombectomy in patients presenting with acute ischemic stroke and tandem lesions.
CGuard Prime with its proprietary MicroNet mesh is designed to provide superior embolic prevention during carotid stenting procedures. We believe that this study will demonstrate safety and feasibility of using our stent in these acute stroke procedures. Our investment in this study reflects our strong commitment to the neuro community and represents a critical component of our long-term growth strategy. The FDA has approved the study, and we anticipate the first patient to be enrolled this quarter.
At this point, I'll turn the call over to Craig to review the financials. Craig?