ClinicalTrials.gov
ClinicalTrials.gov Menu

Studying Genes for Barrett's Esophagus in Brothers and Sisters

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT00516347
Recruitment Status : Unknown
Verified October 2007 by National Cancer Institute (NCI).
Recruitment status was:  Recruiting
First Posted : August 15, 2007
Last Update Posted : August 12, 2013
Sponsor:
Information provided by:
National Cancer Institute (NCI)

Brief Summary:

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.


Condition or disease Intervention/treatment
Esophageal Cancer Precancerous Condition Genetic: comparative genomic hybridization Genetic: genetic linkage analysis Other: laboratory biomarker analysis Other: questionnaire administration Procedure: study of high risk factors

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 : Observational
Estimated Enrollment : 400 participants
Official Title: A Sibling Pair Study To Identify Barrett's Oesophagus Susceptibility Genes
Study Start Date : June 2002

Resource links provided by the National Library of Medicine





Primary Outcome Measures :
  1. Familial incidence of heartburn and Barrett's esophagus in first and second degree relatives of patients with Barrett's esophagus
  2. Susceptibility genes for Barrett's esophagus in affected sibling pairs
  3. Gene-environment interactions, such as smoking, alcohol, and Helicobacter pylori status, on familial susceptibility to heartburn and Barrett's esophagus

Secondary Outcome Measures :
  1. Comparison of the mortality from esophageal adenocarcinoma in family members with heartburn and Barrett's esophagus with deaths from other causes


Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

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

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00516347


Locations
United Kingdom
Hutchison Cancer Research Unit Recruiting
Cambridge, England, United Kingdom, CB2 2XZ
Contact: Rebecca Fitzgerald, MD    44-1223-763-287    rcf@hutchison-mrc.cam.ac.uk   
Sponsors and Collaborators
Medical Research Council
Investigators
Study Chair: Rebecca Fitzgerald, MD Hutchison Cancer Research Unit

ClinicalTrials.gov Identifier: NCT00516347     History of Changes
Other Study ID Numbers: MRC-HCRC-MREC-02/2/57
CDR0000561079 ( Registry Identifier: PDQ (Physician Data Query) )
EU-20752
First Posted: August 15, 2007    Key Record Dates
Last Update Posted: August 12, 2013
Last Verified: October 2007

Keywords provided by National Cancer Institute (NCI):
adenocarcinoma of the esophagus
esophageal cancer
Barrett esophagus

Additional relevant MeSH terms:
Esophageal Neoplasms
Barrett Esophagus
Precancerous Conditions
Gastrointestinal Neoplasms
Digestive System Neoplasms
Neoplasms by Site
Neoplasms
Head and Neck Neoplasms
Digestive System Diseases
Esophageal Diseases
Gastrointestinal Diseases
Digestive System Abnormalities