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Clinical Trial Summary

RATIONALE: Gathering information about genes, cigarette smoking, and diet may help doctors learn more about risk factors that may cause esophageal cancer. PURPOSE: This clinical trial is studying genetic and environmental risk factors related to esophageal cancer.


Clinical Trial Description

OBJECTIVES: - Examine the role of several genetically-determined factors in combination with cigarette smoking and diet in the etiology and prevention of esophageal cancer. - Identify polymorphisms in metabolizing enzymes (e.g., phase I or II metabolism [GSTM1, GSTT1,CYP1A1, CYP3A5, mEH, NQO1, GSTP1], DNA repair [XRCC1, ERCC2], free-radical formation [MPO, MnSOD], inflammatory genes [ IL1-beta], metastatic potential [MMP1], and cell cycle or tumor suppression [p21, p53]) and related path genes of susceptibility for esophageal cancer. OUTLINE: Blood and tumor tissue samples are collected. DNA purified from these samples is analyzed using DNA-based assays to determine polymorphisms in various related gene pathways. Patients complete questionnaires concerning environmental, smoking and diet habits. PROJECTED ACCRUAL: A total of 1,000 tissue samples from patients and healthy participants (750 patients and 250 healthy participants) will be accrued for this study. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT01035398
Study type Observational
Source Massachusetts General Hospital
Contact
Status Active, not recruiting
Phase
Start date April 2000
Completion date September 2023

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