Ra Medical Systems Achieves Milestone of 100 Subjects Enrolled in its Pivotal Atherectomy Clinical Study

Ra Medical Systems, Inc. (NYSE American: RMED), a medical device company focusing on developing its excimer laser system to treat vascular diseases, announces the achievement of a milestone with the enrollment of 100 subjects in its pivotal clinical study to evaluate the safety and effectiveness of the DABRA excimer laser system as an atherectomy device for the treatment of peripheral arterial disease (PAD). This pivotal atherectomy study is cleared to enroll up to 125 subjects.

“I want to recognize the support from our Ra Medical team and our physician investigators and staff for their diligence in reaching this significant enrollment milestone, particularly given the daunting challenges that arose from the COVID-19 pandemic,” said Will McGuire, Ra Medical Systems CEO. “Securing clearance for the atherectomy indication is a top priority for Ra Medical as we believe it will expand our addressable market beyond the existing clearance for crossing chronic total occlusions, or CTOs. Third-party research estimates that the combined CTO and atherectomy markets in the U.S. will approximate $900 million this year.

“Due to the unpredictable nature of the pandemic, we are unable to accurately predict when we will complete study enrollment. However, our goal is to reach full enrollment during the third quarter of this year and to complete six-month follow-up in early 2023,” he added.

The open-label pivotal atherectomy clinical trial can enroll subjects with symptoms of PAD (Rutherford Class 2-5) at up to 10 sites. Seven sites have been cleared for enrollment and one additional site is in the final phase of qualification. Outcome measures include safety, acute technical success and clinical success. The trial’s primary efficacy endpoint is the mean reduction in percent diameter stenosis in each patient’s primary lesion as measured by angiography immediately following treatment with DABRA and before any adjunctive treatment. The trial’s safety and clinical success endpoints are major adverse events at 30 days post-procedure and incidence of primary target lesion revascularization at six months.

About Ra Medical Systems

Ra Medical Systems manufactures the DABRA excimer laser and catheters for the treatment of certain vascular diseases. DABRA has been cleared by the FDA for crossing chronic total occlusions in patients with symptomatic infrainguinal lower extremity vascular disease and has an intended use for ablating a channel in occlusive peripheral vascular disease. In addition, DABRA has been granted CE mark clearance for the endovascular treatment of infrainguinal arteries via atherectomy and for crossing total occlusions. DABRA excimer lasers and catheters are manufactured in a 32,000-square-foot facility located in Carlsbad, California. The vertically integrated facility is ISO 13485 certified and is licensed by the State of California to manufacture sterile, single-use catheters in clean room environments.

Cautionary Note Regarding Forward-Looking Statements

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements generally relate to future events or Ra Medical’s future financial or operating performance. In some cases, you can identify forward-looking statements because they contain words such as “may,” “will,” “should,” “expects,” “plans,” “anticipates,” “could,” “intends,” “target,” “projects,” “contemplates,” “believes,” “estimates,” “predicts,” “potential” or “continue” or the negative of these words or other similar terms or expressions that concern Ra Medical’s future expectations, strategy, plans or intentions. Forward-looking statements in this press release include, but are not limited to, statements regarding Ra Medical’s business strategy, the potential of the DABRA system for new applications of use, the market opportunity and growth of current and potential markets and its ability to continue to manage expenses and cash burn rate at sustainable levels. Ra Medical’s expectations and beliefs regarding these matters may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected or implied by such forward-looking statements. The potential risks and uncertainties which contribute to the uncertain nature of these statements include, among others, challenges inherent in developing, manufacturing, launching, marketing, and selling new products or new applications of use; risks associated with acceptance of DABRA devices for current and potential applications of use and procedures performed using such devices by physicians, payors, and other third parties; development and acceptance of new products, product enhancements or applications of use; clinical and statistical verification of the benefits achieved via the use of Ra Medical’s products; the results from our clinical trials, which may not support intended indications or may require Ra Medical to conduct additional clinical trials or modify ongoing clinical trials; challenges related to commencement, patient enrollment, completion, an analysis of clinical trials; Ra Medical’s ability to manage operating expenses; Ra Medical’s ability to recruit and retain management and key personnel; Ra Medical’s need to comply with complex and evolving laws and regulations; intense and increasing competition and consolidation in Ra Medical’s industry; the impact of rapid technological change; adverse outcome of regulatory inspections; impacts from public health crises, such as the Covid-19 pandemic, geopolitical conflicts, such as Russia’s invasion of Ukraine and related sanctions against Russia and Belarus, or natural disasters; and the other risks and uncertainties described in Ra Medical’s news releases and filings with the Securities and Exchange Commission. Information on these and additional risks, uncertainties, and other information affecting Ra Medical’s business and operating results is contained in Ra Medical’s Annual Report on Form 10-K for the year ended December 31, 2021 and in its other filings with the Securities and Exchange Commission. The forward-looking statements in this press release are based on information available to Ra Medical as of the date hereof, and Ra Medical disclaims any obligation to update any forward-looking statements, except as required by law.

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