Castle Biosciences (Nasdaq: CSTL), a company applying innovative diagnostics to transform disease management and improve patient outcomes, today announced it has completed its acquisition of Cernostics, Inc. (Cernostics). Cernostics specializes in spatial biology and artificial intelligence-driven image analysis of tissue biopsies. Its TissueCypher® Barrett’s Esophagus Assay is the first precision medicine test designed to predict future development of high-grade dysplasia (HGD) and/or esophageal cancer in patients with Barrett’s esophagus (BE).
“We are excited to continue the evolution of the Castle story with the closing of the Cernostics acquisition and our entry into the gastrointestinal space through the TissueCypher platform,” said Derek Maetzold, president and chief executive officer of Castle Biosciences. “The TissueCypher Barrett’s Esophagus Assay is designed to help predict the likelihood of BE’s progression to the more serious HGD or highly aggressive esophageal adenocarcinoma (EAC). Annually, approximately 400,000 endoscopies are performed on BE patients who meet the validated intended use population. We believe we have a unique opportunity to help physicians and patients make more informed disease management decisions based on deep interrogation of the biology of an individual patient’s esophageal biopsy.”
Transaction Terms and Other Information
Under the terms of the definitive agreement, Cernostics has become a wholly owned subsidiary of Castle Biosciences. At closing, Castle paid approximately $30 million in initial consideration to Cernostics security holders, which consisted entirely of cash. Up to an additional $50 million in cash and/or common stock, at Castle’s sole discretion, is payable in connection with the achievement of certain milestones based on 2022 performance. The purchase price is subject to customary working capital and other adjustments.
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TissueCypher® Platform and the TissueCypher® Barrett’s Esophagus Assay
The TissueCypher® platform combines a unique approach designed to bring together the key elements of biologically aware artificial intelligence to deliver the spatialomics revolution to the clinician and enable individualized decision-making. This technology and platform are the core of the TissueCypher® Barrett’s Esophagus Assay, the world’s first precision medicine test designed to predict future development of HGD and/or esophageal cancer in patients with BE. The TissueCypher Barrett’s Esophagus Assay is indicated for patients with endoscopic biopsy confirmed BE that is graded non-dysplastic, indefinite for dysplasia or low-grade dysplasia; it has been validated in multiple, independent studies of BE progressor patients. The TissueCypher Barrett’s Esophagus Assay is a proprietary Laboratory Developed Test with its own unique CPT PLA code (0108U) and has been on the Medicare Clinical Laboratory Fee Schedule since January 2021.
Source: Biospace