Barrett's esophagus, Barrett's dysplasia, Cryo ablation, Cryo therapy, Barrett's slokdarm, Barrett gerelateerde dysplasia, Cryo ablatie, Cryo therapie
Conditions
Interventions
Patients with a Barrett's Esophagus will be treated with the cryoballoon swipe system. This includes a first treatment covering 50% of circumference and over a length of 3 cm. Patients in phase II wil
Sponsors
C2 Therapeutics, Inc.
Eligibility
Inclusion criteria
Inclusion criteria: 1. Patients with flat-type (Paris type 0-IIb) BE esophagus, with an indication for ablation therapy, meaning: • Diagnosis of LGD or HGD in BE (confirmed by baseline histopathological analysis), OR • Residual BE with any grade of dysplasia after endoscopic resection (by means of EMR or ESD) to treat non-flat BE, ≥6 weeks prior to enrolling the patient to this study. The ER pathology should indicate endoscopic treatment (i.e. only mucosal invasion, no lymphovascular infiltration, free vertical resection margins and not poorly differentiated) 2. Prague Classification Score C≤3 3. Patients should be ablative-naïve, meaning they did not undergo any previous ablation therapy of the esophagus 4. Older than 18 years of age at time of consent 5. Operable per institution’s standards 6. Provides written informed consent on the IRB-approved informed consent form 7. Willing and able to comply with follow-up requirements
Exclusion criteria
Exclusion criteria: 1. Esophageal stenosis or stricture preventing advancement of a therapeutic endoscope. 2. Any endoscopically visualized lesion such as ulcers, masses or nodules. Neoplastic nodules must first be treated with ER >6 weeks prior to planned treatment under this protocol. 3. Prior ER >2cm in length and >50% of the esophageal lumen circumference 4. History of esophageal cancer 5. History of esophageal varices 6. Prior distal esophagectomy 7. Active esophagitis LA grade B or higher 8. Severe medical comorbidities precluding endoscopy 9. Uncontrolled coagulopathy 10. Pregnant or planning to become pregnant during period of study 11. Patient refuses or is unable to provide written informed consent
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| 1)Safety will be evaluated by the incidence of Dose-related SAEs 2)Efficacy (eradication percentage as determined with the EGD-AC plus histological evidence of eradication of BE, after circumferential treatment with the therapeutic dose). | — |
Secondary
| Measure | Time frame |
|---|---|
| 1. Incidence of all serious and non-serious adverse events up to 30 days post-treatment 2. Post-procedure pain in the area of the cryoablation treatment (scored on a 1 to 10- point VAS), 3. Efficacy, defined as the regression percentage at the first follow-up endoscopy, after 1 treatment covering 50% of circumference, with the therapeutic dose 4. Efficacy for treatment with CryoBalloon Swipe ablation system, defined as the proportion of patients with >80% regression of BE after 1 semicircumferential resp. fully circumferential treatment | — |
Contacts
Public ContactS.N. van Munster
AMC
Outcome results
None listed