Nivolumab After Combined Modality Therapy in Treating Patients With High Risk Stage II-IIIB Anal Cancer

Description

PRIMARY OBJECTIVE:

I. To evaluate whether therapy with nivolumab following combined modality therapy (CMT) improves disease-free survival (DFS) compared with observation in patients with high risk anal carcinoma.

SECONDARY OBJECTIVES:

I. To compare nivolumab following combined modality therapy (CMT) with observation in patients with high risk anal carcinoma with regard to:

Ia. Objective response rate (complete [CR] and partial [PR]), stable disease and progression.

Ib. Severe toxicity interval. Ic. Colostomy-free survival. Id. Overall survival. Ie. Toxicity.

OUTLINE: Patients who received standard CMT are randomized to 1 of 2 arms.

ARM A: Patients receive nivolumab intravenously (IV) while on study.

ARM B: Patients undergo observation while on study

Patients undergo sigmoidoscopy, colonoscopy or anoscopy, proctoscopy or digital rectal exam, x-ray, computed tomography (CT) scan, magnetic resonance imaging (MRI), biopsy and blood sample collection throughout the study.