EsoCheck esophageal cell sampling procedure performed on 687 patients with 98% success rate

Lucid Diagnostics Inc. (Nasdaq: LUCD) (“Lucid”), a commercial-stage, cancer prevention medical diagnostics company, and majority-owned subsidiary of PAVmed Inc. (Nasdaq: PAVM, PAVMZ) (“PAVmed”), today announced that Suman M. Verma, M.D., Ph.D., Lucid’s Chief Scientific Officer, presented real-world data on its EsoCheck^® Cell Collection Device (“EsoCheck”) at the American Association for Cancer Research’s (“AACR”) Special Conference: Precision Prevention, Early Detection, and Interception of Cancer.

The presentation, entitled Rapid, Noninvasive, Office-based, Esophageal Cell Collection for Early Detection of Esophageal Precancer and Cancer, reported data on 687 patients who underwent EsoCheck esophageal cell sampling by a trained nurse practitioner, in a rapid office procedure without sedation or anesthesia. The samples were then sent to a central laboratory for DNA extraction, quantification, and molecular biomarker testing using Lucid’s EsoGuard^® Esophageal DNA Test (“EsoGuard”).

98% of patients, 10% of whom had a severe gag reflex, successfully completed the procedure. Procedure times ranged from one to fifteen minutes and averaged three and one-half minutes. Average DNA yield and cell count were excellent and over 90% of samples yielded sufficient DNA to perform the EsoGuard test.

“EsoCheck remains the only commercially-available, nonendoscopic esophageal cell collection device recommended by major professional society guidelines for early detection of esophageal precancer to prevent esophageal cancer deaths,” said Lishan Aklog, M.D., Lucid’s Chairman and Chief Executive Officer. “These unprecedented results in a large cohort of patients demonstrate that EsoCheck can be successfully performed in nearly all patients and is broadly well-tolerated.”

About EsoGuard and EsoCheck

Millions of patients with GERD are at risk of developing esophageal precancer and a highly lethal form of esophageal cancer (“EAC”). Over 80% of EAC patients die within five years of diagnosis, making it the second most lethal cancer in the U.S. The mortality rate is high even in those diagnosed with early stage EAC. The U.S. incidence of EAC has increased 500% over the past four decades, while the incidences of other common cancers have declined or remained flat. In nearly all cases, EAC silently progresses until it manifests itself with new symptoms of advanced disease. All EAC is believed to arise from esophageal precancer, which occurs in approximately 5% to 15% of at-risk GERD patients. Early esophageal precancer can be monitored for progression to late esophageal precancer which can be cured with endoscopic esophageal ablation, reliably halting progression to cancer.

Esophageal precancer screening is already recommended by clinical practice guidelines in millions of GERD patients with multiple risk factors, including age over 50 years, male gender, White race, obesity, smoking history, and a family history of esophageal precancer or cancer. Unfortunately, fewer than 10% of those recommended for screening undergo traditional invasive endoscopic screening. The profound tragedy of an EAC diagnosis is that likely death could have been prevented if the at-risk GERD patient had been screened and then undergone surveillance and curative treatment.

The only missing element for a viable esophageal cancer prevention program has been the lack of a widespread screening tool that can detect esophageal precancer. Lucid believes EsoGuard, performed on samples collected with EsoCheck, is the missing element – the first and only commercially available test capable of serving as a widespread screening tool to prevent esophageal cancer deaths through the early detection of esophageal precancer in at-risk GERD patients. An updated American College of Gastroenterology clinical practice guideline and an American Gastroenterological Association clinical practice update both endorse nonendoscopic biomarker tests as an acceptable alternative to costly and invasive endoscopy for esophageal precancer screening. EsoGuard is the only such test currently available in the United States.

EsoGuard is a bisulfite-converted NGS DNA assay performed on surface esophageal cells collected with EsoCheck, which quantifies methylation at 31 sites on two genes, Vimentin (VIM) and Cyclin A1 (CCNA1). The assay was evaluated in a 408-patient, multicenter, case-control study published in Science Translational Medicine and showed greater than 90% sensitivity and specificity at detecting esophageal precancer and cancer.

EsoCheck is an FDA 510(k) and CE Mark cleared noninvasive swallowable balloon capsule catheter device capable of sampling surface esophageal cells in, on average, a less than five-minute office procedure. It consists of a vitamin pill-sized rigid plastic capsule tethered to a thin silicone catheter from which a soft silicone balloon with textured ridges emerges to gently swab surface esophageal cells. When vacuum suction is applied, the balloon and sampled cells are pulled into the capsule, protecting them from contamination and dilution by cells outside of the targeted region during device withdrawal. Lucid believes this proprietary Collect+Protect™ technology makes EsoCheck the only noninvasive esophageal cell collection device capable of such anatomically targeted and protected sampling. The sample is sent by overnight express mail to Lucid’s CLIA-certified, CAP-accredited laboratory, LucidDx Labs, for EsoGuard testing.

About Lucid Diagnostics

Lucid Diagnostics Inc. (Nasdaq: LUCD) is a commercial-stage, cancer prevention medical diagnostics company, and subsidiary of PAVmed Inc. (Nasdaq: PAVM). Lucid is focused on the millions of patients with gastroesophageal disease (GERD), also known as chronic heartburn, who are at risk of developing esophageal precancer and cancer. Lucid’s EsoGuard^® Esophageal DNA Test, performed on samples collected in a brief, noninvasive office procedure with its EsoCheck^® Esophageal Cell Collection Device, is the first and only commercially available diagnostic test capable of serving as a widespread screening tool to prevent cancer and cancer deaths through early detection of esophageal precancer in at-risk GERD patients. EsoGuard is commercialized in the U.S. as a Laboratory Developed Test (LDT). EsoCheck is commercialized in the U.S. as a 510(k)-cleared esophageal cell collection device. EsoGuard, used with EsoCheck, was granted FDA Breakthrough Device designation and is the subject of multiple ongoing clinical trials. Lucid is building nationwide direct sales and marketing teams targeting primary care physicians, specialists, and institutions, as well as a network of Lucid Test Centers, where at-risk GERD patients can undergo the EsoCheck procedure for EsoGuard testing. For more information, please visit www.luciddx.com, follow Lucid on Twitter, and connect with Lucid on LinkedIn. For detailed information on EsoGuard, please visit www.EsoGuard.com and follow us on Twitter, Facebook and Instagram.

Forward-Looking Statements

This press release includes forward-looking statements. Forward-looking statements are any statements that are not historical facts. Such forward-looking statements, which are based upon the current beliefs and expectations of Lucid’s management, are subject to risks and uncertainties, which could cause actual results to differ from the forward-looking statements. Risks and uncertainties that may cause such differences include, among other things, volatility in the price of Lucid’s common stock; general economic and market conditions; the uncertainties inherent in research and development, including the cost and time required to advance Lucid’s products to regulatory submission; whether regulatory authorities will be satisfied with the design of and results from Lucid’s clinical and preclinical studies; whether and when Lucid’s products are cleared by regulatory authorities; market acceptance of Lucid’s products once cleared and commercialized; Lucid’s ability to raise additional funding as needed; and other competitive developments. In addition, Lucid has been monitoring the COVID-19 pandemic and the pandemic’s impact on Lucid’s businesses. Lucid expects the significance of the COVID-19 pandemic, including the extent of its effect on its financial and operational results, to be dictated by, among other things, the success of efforts to contain the pandemic and the impact of such efforts on Lucid’s businesses. These factors are difficult or impossible to predict accurately and many of them are beyond Lucid’s control. In addition, new risks and uncertainties may arise from time to time and are difficult to predict. For a further list and description of these and other important risks and uncertainties that may affect Lucid’s future operations, see Part I, Item 1A, “Risk Factors,” in Lucid’s most recent Annual Report on Form 10-K filed with the Securities and Exchange Commission, as the same may be updated in Part II, Item 1A, “Risk Factors” in any Quarterly Report on Form 10-Q filed by Lucid after its most recent Annual Report. Lucid disclaims any intention or obligation to publicly update or revise any forward-looking statement to reflect any change in its expectations or in events, conditions, or circumstances on which those expectations may be based, or that may affect the likelihood that actual results will differ from those contained in the forward-looking statements.

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