# C2 CryoBalloon™ 180 Ablation System Dose De-escalation Study.

> **NCT03311451** · NA · ENROLLING_BY_INVITATION · sponsor: **Pentax Medical** · enrollment: 30 (estimated)

## Conditions studied

- Barrett Esophagus

## Interventions

- **DEVICE:** C2 CryoBalloon 180° Ablation System

## Key facts

- **NCT ID:** NCT03311451
- **Lead sponsor:** Pentax Medical
- **Sponsor class:** INDUSTRY
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** ENROLLING_BY_INVITATION
- **Start date:** 2023-01-16
- **Primary completion:** 2025-08-01
- **Final completion:** 2026-12-01
- **Target enrollment:** 30 (ESTIMATED)
- **Last updated:** 2025-01-13


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03311451

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03311451, "C2 CryoBalloon™ 180 Ablation System Dose De-escalation Study.". Retrieved via AI Analytics 2026-05-24 from https://api.ai-analytics.org/clinical/NCT03311451. Licensed CC0.

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