Digma System First in Human (FIH) Study

Prospective, open-label, single-arm, early feasibility study (EFS) in 2 Patient cohorts: Cohort A - Dose finding / Dose response study in patients with various etiologies undergoing Esophagectomy and Cohort B - Patients with Barrett's Esophagus (BE) with Low-Grade Dysplasia (LDG) or High-Grade Dysplasia (HGD) without a visible (excisable) lesion. This is a pilot study which plan to enroll up to 5 eligible patients in the First Cohort (A) and up to 15 patients in the Second Cohort (B) of the study.

Study intervention means tha application of different doses of laser energy in the ablation of esophageal mucosa using the Digma System and the Endoscopic Gastrointestinal Ablation Device (EGAD) procedure (Cohort A) followed by application of the optimal dose for treatment of patients with BE with Low-Grade Dysplasia (LGD) or High-Grade Dysplasia (HDG) without a visible lesion (Cohort B). EGAD is a proprietary, controlled laser ablation system for the treatment of endoluminal pathologies of the gastrointestinal tract. EGAD achieves high precision through a unique optical design that controls laser energy, beam size, wavelength, and focal plane. This allows for effective ablation that is limited to the mucosa of pre-selected regions of interest, avoiding a wider and deeper injury to healthy tissue. EGAD procedure can be performed safely in a standard endoscopy suite under direct endoscopic visualization. In this First-in-Human pilot feasibility study, we plan to assess the feasibility of EGAD for achieving mucosal ablation (1) in healthy esophageal tissue in patients undergoing esophagectomy for esophageal cancer or other indications (Barrett's mucosa may be ablated as well) - Cohort A; and (2) In patients with Barrett's Esophagus with low and/or high-grade dysplasia (BORN = Barrett´s Oesophagus-Related Neoplasia) without a visible (excisable) lesion - Cohort B.