Studying Biomarkers in Tumor Tissue and Blood Samples From Patients Undergoing Chemotherapy and Radiation Therapy for Stage II or Stage III Rectal Cancer That Can Be Removed By Surgery

Stopped No surgeon available to perfrom gastroscopy

Conditions

• Colorectal Cancer

Interventions

• DRUG: systemic chemotherapy
• GENETIC: RNA analysis
• GENETIC: gene expression analysis
• GENETIC: reverse transcriptase-polymerase chain reaction
• OTHER: immunohistochemistry staining method
• OTHER: laboratory biomarker analysis
• PROCEDURE: endoscopic biopsy
• PROCEDURE: neoadjuvant therapy
• PROCEDURE: sigmoidoscopy
• RADIATION: radiation therapy

Sponsor

Barbara Ann Karmanos Cancer Institute

Collaborators

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