- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00516347
Studying Genes for Barrett's Esophagus in Brothers and Sisters
A Sibling Pair Study To Identify Barrett's Oesophagus Susceptibility Genes
RATIONALE: Learning about how often heartburn and other risk factors occur in brothers and sisters and other family members of patients with Barrett's esophagus may help identify other individuals at risk and identify genes for Barrett's esophagus.
PURPOSE: This clinical trial is studying genes for Barrett's esophagus in brothers and sisters.
Study Overview
Status
Conditions
Detailed Description
OBJECTIVES:
Primary
- To investigate the familial incidence of heartburn and Barrett's esophagus in first and second degree relatives of patients with Barrett's esophagus in the United Kingdom.
- To determine susceptibility genes for Barrett's esophagus in affected sibling pairs.
- To examine gene-environment interactions, such as smoking, alcohol, and Helicobacter pylori status, on familial susceptibility to heartburn and Barrett's esophagus.
Secondary
- To compare the mortality from esophageal adenocarcinoma in family members with heartburn and Barrett's esophagus with deaths from other causes.
OUTLINE: This is a multicenter study.
Patients complete a family history questionnaire. Epidemiological data is also collected about environmental exposures, such as smoking and alcohol history. Any siblings or other living family members affected by heartburn identified from this survey are then contacted to validate their symptoms/diagnoses and to collect other relevant epidemiological data. Family members with heartburn are offered a screening endoscopy for the presence of Barrett's esophagus. In the absence of an endoscopy, a symptom nomogram predictive for the presence of Barrett's esophagus is used.
Patients and their siblings, as well as any other willing family member (affected or non-affected) are asked to have a blood sample (EDTA tube for genetic analysis and a serum sample for Helicobacter pylori status) taken by their physician. Genomic DNA is extracted from lymphocytes and a genome-wide scan is performed using a standard marker set. A computer program is used to verify sibling relationships. Individuals not found to be full siblings are excluded from subsequent analyses. Maximum likelihood score (MLS) and the nonparametric linkage score (NPL) is used to estimate the degree of linkage.
All study participants are flagged with the National Health Service (NHS) Central Register to ascertain the future mortality from esophageal adenocarcinoma compared with deaths from other causes.
PROJECTED ACCRUAL: A total of 200 sibling pairs will be accrued for this study.
Study Type
Enrollment (Anticipated)
Contacts and Locations
Study Locations
-
-
England
-
Cambridge, England, United Kingdom, CB2 2XZ
- Recruiting
- Hutchison Cancer Research Unit
-
Contact:
- Rebecca Fitzgerald, MD
- Phone Number: 44-1223-763-287
- Email: rcf@hutchison-mrc.cam.ac.uk
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Child
- Adult
- Older Adult
Accepts Healthy Volunteers
Genders Eligible for Study
Description
DISEASE CHARACTERISTICS:
- Sibling pairs will be recruited either from the United Kingdom National Barrett's Oesophagus Registry (UKBOR) of patients with Barrett's esophagus from 37 centers OR from National Health Service hospitals
PATIENT CHARACTERISTICS:
- Not specified
PRIOR CONCURRENT THERAPY:
- Not specified
Study Plan
How is the study designed?
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
---|
Familial incidence of heartburn and Barrett's esophagus in first and second degree relatives of patients with Barrett's esophagus
|
Susceptibility genes for Barrett's esophagus in affected sibling pairs
|
Gene-environment interactions, such as smoking, alcohol, and Helicobacter pylori status, on familial susceptibility to heartburn and Barrett's esophagus
|
Secondary Outcome Measures
Outcome Measure |
---|
Comparison of the mortality from esophageal adenocarcinoma in family members with heartburn and Barrett's esophagus with deaths from other causes
|
Collaborators and Investigators
Sponsor
Investigators
- Study Chair: Rebecca Fitzgerald, MD, Hutchison Cancer Research Unit
Study record dates
Study Major Dates
Study Start
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- MRC-HCRC-MREC-02/2/57
- CDR0000561079 (Registry Identifier: PDQ (Physician Data Query))
- EU-20752
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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