Genes in Predicting Outcome in Patients With Esophageal Cancer Treated With Cisplatin, Radiation Therapy, and Surgery

Study Overview
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Brief Summary
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RATIONALE: Studying samples of tissue in the laboratory from patients with cancer may help doctors learn more about changes that occur in DNA and identify biomarkers related to cancer. It may also help doctors predict a patient's response to treatment. PURPOSE: This laboratory study is looking at genes to see if they can predict outcome in patients with esophageal cancer treated with cisplatin, radiation therapy, and surgery.

Detailed Description
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OBJECTIVES: Correlate patient outcomes with neoplastic cell genotypes, specifically 18 single nucleotide polymorphisms (SNPs) in 16 major genes involved in platinum metabolism and disposition and DNA repair, in patients with esophageal cancer treated with neoadjuvant cisplatin-based chemoradiotherapy followed by surgical resection on clinical trial ECOG-1201. Correlate patient outcomes with neoplastic cell genotypes, specifically loss of heterozygosity, in these patients. Correlate patient outcomes with normal (germline) cell genotypes, specifically SNPs related to platinum metabolism and disposition and DNA repair. Compare the predictive ability of neoplastic vs germline cell genotypes. OUTLINE: This is a retrospective, cohort, multicenter study. Neoplastic and normal (germline) cells are collected from pretreatment and post-treatment specimens using laser-capture microdissection. Single nucleotide polymorphisms are examined by real-time PCR. Loss of heterozygosity is assessed by analyzing short tandem repeat markers in neoplastic and germline tissue.

Official Title
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Single Nucleotide Polymorphisms (SNP) in Platinum-/Radiation Pathway Genes to Predict Outcome in Patients With Esophageal Adenocarcinoma Treated With Cisplatin-Based Chemoradiotherapy Followed by Surgical Resection

Conditions
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Esophageal Cancer

Intervention / Treatment
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* Genetic: loss of heterozygosity analysis
* Genetic: polymerase chain reaction
* Genetic: polymorphism analysis


Participation Criteria
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Eligibility Criteria
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DISEASE CHARACTERISTICS: Diagnosis of adenocarcinoma of the esophagus Stage I-IV disease Received cisplatin-based treatment on clinical trial ECOG-1201 PATIENT CHARACTERISTICS: Not specified PRIOR CONCURRENT THERAPY: Not specified

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 120 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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Arms and Interventions

| Intervention/Treatment |
| --- |
|Genetic: loss of heterozygosity analysis|nan|
|Genetic: polymerase chain reaction|nan|
|Genetic: polymorphism analysis|nan|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Comparison of pretreatment clinical tumor staging vs post-treatment pathologic staging (at resection) |  | 1 month | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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adenocarcinoma of the esophagus, stage II esophageal cancer, stage III esophageal cancer, stage IV esophageal cancer, stage I esophageal cancer