- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01566474
Melatonin Associated to Acid Inhibition for Chemoprevention in Barret Esophagus: a Pilot Study
The study consists on determining whether melatonin decreases oxidative stress in Barrett's esophageal mucosa after 6 months of treatment. In order to achieve the clinical trial, the patients will be randomized to two possible arms: omeprazole alone or omeprazole plus melatonin. The patients will be followed around four visits during six months.
GERD is one of the most prevalent pathologies in the digestive tract. Barrett's esophagus, a complication of chronic GERD, has attracted the attention of researchers due to its condition of pre-neoplastic lesion. At present, treatment of Barrett's patients is limited to acid inhibition with PPIs. Although there are several studies which indicate that treatment with PPIs could decrease the incidence of high grade dysplasia and EAC, treatment with PPIs does not eliminate the risk of EAC in these patients. Therefore, it is necessary to find chemo-preventive agents that stop neoplastic progression of Barrett's esophagus. Among them, antioxidants have become the most promising agent. This pilot study will determine the efficacy of melatonin in the chemoprevention of EAC.
So, the main objective of this study is to determine whether melatonin decreases oxidative stress in Barrett's esophageal mucosa after 6 months of treatment.
To evaluate whether melatonin modifies other mechanisms associated to neoplastic progression in BE patients: proliferation and apoptotic index and molecular markers of progression: 17pLOH, 9pLOH, p16 methylation and DNA ploidy (tetraploidy and/or aneuploidy).
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Barrett's esophagus (BE) is a chronic disease secondary to the presence of stomach acid into the esophagus. This atypical situation produces an inflammation and ulceration of the distal esophagus mucosa. It is the main factor predisposing to the development of esophageal adenocarcinoma, which has a very poor prognosis. At present, therapy of Barrett's esophagus is based on acid secretion inhibition with proton pump inhibitors, which is a very effective therapy to reduce gastroesophageal reflux. However, this therapy does not completely eliminate this risk. Therefore, the better way to follow this disorder is to perform periodic upper gastrointestinal endoscopy and biopsies. Therefore, it is necessary to find new chemo-preventive agents that avoid more efficiently the neoplastic progression of BE. New advances in knowledge about BE suggest that antioxidants could be used to reduce the disorder development. These drugs are being used for long time ago in different pathologies in a lot of countries. One of these drugs is melatonin, which combines several characteristics that suggest it could be the most suitable antioxidant. It has no adverse effects reported.
Patients that meet the following characteristics will be included in this clinical study: Patients (males and females) with Barrett's esophagus (>18 years and <80) without macroscopic esophagitis at endoscopy and a length of the metaplasic mucosa of 2 cm or longer. By the same way, patients will be excluded of the study if present carcinoma or high grade dysplasia at basal endoscopy, previous gastric or esophageal surgery, patients on NSAID or aspirin treatment, neoplastic malignancies, hematological serious diseases (coagulation disorders and anemia with Hb < 9.5 gr/dL), serious/moderate cardiac, liver or renal diseases, need of corticosteroid therapy (a minimum of 5 days per month is allowed, as well as topical or inhaled treatment), patients on misoprostol or anticoagulants, patients with inflammatory bowel disease and allergy to investigational drugs.
Patients, who agree to participate in the study and meet criteria, will be randomized to one of the two following therapies: omeprazole alone or omeprazole + Circadin (melatonin.).
This intervention hardly produces any adverse effects, the most frequent adverse effects of proton pump inhibitors are headache and stomach ache. For melatonin has not reported any adverse effect.
This study will be done in the Hospital Clinico Lozano Blesa (Zaragoza, Spain), promoted by the Health Science Aragon Institute and its principal investigator is Angel Lanas Arbeloa (Digestive Disease Service). It will start in March-april 2012 and will finish 12 months later approximately. The study sponsor is I+CS (Aragon Institute of Health Sciences) that carries the cost of the trial.
Study Type
Enrollment (Actual)
Phase
- Phase 3
Contacts and Locations
Study Locations
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Zaragoza, Spain, 50009
- Hospital Clínico Universitario Lozano Blesa
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Patients (males and females) with Barrett's esophagus (>18 years and <80) without macroscopic esophagitis at endoscopy and a length of the metaplasic mucosa of 2 cm or longer, who agree to participate in the study.
Exclusion Criteria:
- Presence of carcinoma or high grade dysplasia at basal endoscopy.
- Previous gastric or esophageal surgery.
- Patients on NSAID or aspirin treatment. A maximum of 5 days per month is allowed. Paracetamol will be used as the standard analgesic treatment.
- Neoplastic malignancies.
- Hematological serious diseases. Coagulation disorders and anemia with Hb < 9.5 gr/dL.
- Serious/moderate cardiac, liver or renal diseases.
- Need of corticosteroid therapy. A minimum of 5 days per month is allowed, as well as topical or inhaled treatment.
- Patients on misoprostol or anticoagulants.
- Patients with inflammatory bowel disease.
- Allergy to investigational drugs.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Melatonin + omeprazole
Omeprazole 40 mg/day + Circadin 6 mg/12 hours.
Patients will take the Omeprazole capsule once in the morning before breakfast together with 3 tables of 2 mgs of Circadin (melatonin).
In the evening, before dinner, patients will take 3 tablets of 2 mg of Circadin.
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Omeprazole 40 mg/day + Circadin 6 mg/12 hours.
Patients will take the Omeprazole capsule once in the morning before breakfast together with 3 tables of 2 mgs of Circadin (melatonin).
In the evening, before dinner, patients will take 3 tablets of 2 mg of Circadin.
Other Names:
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Active Comparator: omeprazole
Omeprazole 40 mg/day alone.
Patients will take the capsule once in the morning before breakfast.
This is the standard therapy for patients suffering from Barrett's esophagus.
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Omeprazole 40 mg/day alone.
Patients will take the capsule once in the morning before breakfast.
This is the standard therapy for patients suffering from Barrett's esophagus.
Other Names:
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Oxidative stress
Time Frame: 6 months
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6 months
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Biological markers of diseases progression
Time Frame: 6 months
|
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6 months
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The presence of DNA anomalies (tetraploidy and aneuploidy.
Time Frame: 6 months
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It will be determined by static cytometry.
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6 months
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Collaborators and Investigators
Investigators
- Principal Investigator: Angel Lanas Arbeloa, Physician, Digestive disease service of Hospital Clinico Lozano Blesa
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Digestive System Diseases
- Neoplasms
- Gastrointestinal Diseases
- Esophageal Diseases
- Precancerous Conditions
- Barrett Esophagus
- Physiological Effects of Drugs
- Molecular Mechanisms of Pharmacological Action
- Central Nervous System Depressants
- Enzyme Inhibitors
- Gastrointestinal Agents
- Protective Agents
- Anti-Ulcer Agents
- Proton Pump Inhibitors
- Antioxidants
- Melatonin
- Omeprazole
Other Study ID Numbers
- ICS10/0273
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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