CryoSpray Ablation(TM)to Determine Safety and Feasibility in Radiation Induced Proctitis

Study Overview
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Brief Summary
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The purpose of this study is to evaluate the safety, feasibility, tissue response, and subject side effects of liquid nitrogen sprayed through a catheter (CryoSpray AblationTM, CSA or cryospray therapy) via endoscope in subjects with radiation induced proctitis.

Detailed Description
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The proposed study is a single center, ten patient pilot study to evaluate the safety and feasibility of sprayed liquid nitrogen through a catheter via endoscope in subjects with radiation proctitis. There will be two groups. Subjects in Group 1 will receive a cryospray applied to healthy tissue for 10 seconds. The cryospray will be repeated four (4) times in sequential fashion for a total of 40 seconds of cryospray therapy. Subjects in Group 2 will receive a cryospray applied to healthy tissue for 20 seconds. The cryospray will be repeated two (2) times in sequential fashion for a total of 40 seconds of cryospray therapy.

Official Title
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A Single Center Pilot Study of CryoSpray Ablation(TM) to Determine Safety and Feasibility in Radiation Induced Proctitis (CSA LGI-2)

Conditions
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Radiation Proctitis, Radiation Induced Proctitis

Intervention / Treatment
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* Device: Cryo Spray Ablation Group 1
* Device: Cryo Spray Ablation Group 2


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Age 18 years of age Have radiation induced proctitis Exclusion Criteria: Pregnant or nursing Planning to become pregnant during the course of the study Planning to sire a child while enrolled in the study Known history of unresolved drug or alcohol dependency that would limit ability to comprehend or follow instructions related to informed consent, post-treatment instructions, or follow-up guidelines. Subject has prior or concurrent ablation therapy including, but not limited to, photodynamic therapy, multipolar electro coagulation, argon plasma coagulation, laser treatment, radio frequency, etc Refusal or inability to give consent. Concurrent chemotherapy. Medical contraindication or potential problem that would preclude study participation Concurrent participation in other experimental studies Uncontrolled coagulopathy or bleeding diathesis Portal hypertension due to cirrhosis manifest by esophageal, gastric or rectal varices

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Cryo Spray Ablation Group 1<br>4 cycles of 10 seconds each | Device: Cryo Spray Ablation Group 1<br>* Cryo Spray Ablation<br>* Other names: Cryo Spray Ablation;|
| Experimental: Cryo Spray Ablation Group 2<br>2 cycles of 20 seconds each | Device: Cryo Spray Ablation Group 2<br>* cryo spray ablation<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| The primary endpoints for this study are patient safety, treatment efficacy, and feasibility of cryospray therapy in subjects with radiation proctitis. |  | End of Study | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| The secondary endpoints for the study are the cataloging of side effects, and tissue response as determined by endoscopic visual evaluation. |  | End of Study | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Radiation Proctitis, Radiation Induced Proctitis