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CRYO-SCAR study

Cryoablation using the CryoBalloon Ablation System (CBAS) for superficial esophageal squamous cell carcinoma on or near the scar after endoscopic treatment: Efficacy and safety study

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT1080225331
Enrollment
15
Registered
2020-08-21
Start date
2020-11-01
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

esophageal cancer

Interventions

investigational material(s) Generic name etc : Cryosurgical unit INN of investigational material : Therapeutic category code : Dosage and Administration for Investigational material : The lesions ar

Sponsors

National Cancer Center Hospital East
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Eligibility criteria include, but are not limited to, the following: 1) Patients from whom written consent to participate in the study is obtained. 2) Patients aged greater than 20 years at the time of consent obtaining. 3) Patients with esophageal cancer who have been histologically diagnosed with squamous cell carcinoma. 4)Patients whose lesions are diagnosed on or near the scar after endoscopy treatment, whose lesions depth is within the mucosa, and for whose lesions ESD/EMR is technically difficult. 5) Patients having a lesion within thoracic or abdominal esophagus 6) Patients showing neither lymph node metastasis nor distant metastasis in image by CT at screening. 7) Patients who can pass through a therapeutic endoscope. 8) Patients with an ECOG Performance Status (PS) of 0 to 2 at the time of enrollment. 9) Patients who are judged to have enough organ functions based on laboratory values measured within 28 days before enrollment. 10) Patients who can follow up 12 months after primary cryoablation. 11) Women of childbearing potential who are negative in a urine pregnancy test agree to use contraception from obtaining informed consent through 6 months after the Cryoablation.

Exclusion criteria

Exclusion criteria: Exclusion criteria including below but not limited to: 1) Diameter of lesion >50mm 2) Circumferential extent of target lesion is 360 degrees. 3) Patients whom a lesion targeted for treatment has more than 4 lesions 4) Patients whose Cryoablation treatment area is expected to cover the entire circumference. 5) Patients who has active multiple primary cancer. 6) Target tissue varices at risk for bleeding 7) Prior Heller myotomy 8) Patients who has serious complications such as Unstable angina, uncontrolled blood pressure, serious heart disease. 9) Patients with respiratory disease requiring oxygen administration. 10) Patients having serious complications 11) Pregnant or breastfeeding female patients. 12) Patients who are judged by the principal investigator as ineligible to be administered the Cryoablation, or in whom the principal investigator judges that treatment cannot be performed safely.

Design outcomes

Primary

MeasureTime frame
efficacy Rate of local complete response (L-CR) judged in an independent committee after 48 weeks from the Cryoablation.

Secondary

MeasureTime frame
efficacy safety other 1) Rate of local complete response (L-CR) judged the principal investigator or sub-investigator after 48 weeks from the Cryoablation. 2) Rate of L-CR for all lesions 3) Rate of technically successful ablation 4) Treatment time of the Cryoablation 5) Pain score after the treatment 6) Recurrence free survival 7) Overall survival 8) Incidence rate of adverse event

Countries

Japan

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026