A Phase III Trial of 6 Versus 12 Treatments of Adjuvant FOLFOX Plus Celecoxib or Placebo for Patients With Resected Stage III Colon Cancer

PURPOSE: This randomized phase III trial is studying giving oxaliplatin, leucovorin calcium,
and fluorouracil together to compare how well they work when given together with or without
celecoxib in treating patients with stage III colon cancer previously treated with surgery.

RATIONALE: Drugs used in chemotherapy, such as oxaliplatin, leucovorin calcium, and
fluorouracil, work in different ways to stop the growth of tumor cells, either by killing the
cells or by stopping them from dividing. Celecoxib may stop the growth of tumor cells by
blocking some of the enzymes needed for cell growth. It is not yet known whether giving
oxaliplatin, leucovorin calcium, and fluorouracil is more effective with or without celecoxib
in treating colon cancer.