Phase I-II Multiple-Dose Safety and Efficacy Study of a Selective Inhibitor of Cyclooxygenase - 2 (SC-58635) in Hereditary Non-Polyposis Colorectal Cancer (HNPCC) Patients and Carriers

Summary

This is a randomized, placebo-controlled Phase I/II multi-center trial, of the safety and efficacy of Celecoxib in a cohort of 81 HNPCC subjects and gene carriers. The three proposed intervention arms are: Celecoxib (to be provided by Searle) will be administered at 200mg p.o. BID x 12 months or 400mg p.o. BID x 12 months vs. Placebo p.o. BID x 12 months. Assessment of endoscopic and tissue-based biomarker endpoints will be conducted at baseline and 12 months on study drug or placebo. Patients that present with polyps at baseline will undergo a month 4 endoscopy. Plasma drug trough samples for pharmacokinetic analyses will be collected at baseline and month 12. NCI-Chemoprevention Branch will coordinate the efforts and activities of all sites. Safety monitoring will occur via in-patient interviews with exams at month twelve; symptom questionnaires completed at baseline, months one, four, eight and twelve; blood and urinalysis at baseline and at months one, four, eight and twelve. A post-administration telephone call to evaluate side effect resolution will occur at months 13-14 for patients who have unresolved adverse events at the end of month 12.

Timeline

Start

1998-03

Primary completion

—

Completion

2002-01

Publications

• Background Marra G, Boland CR. Hereditary nonpolyposis colorectal cancer: the syndrome, the genes, and historical perspectives. J Natl Cancer Inst. 1995 Aug 2;87(15):1114-25. doi: 10.1093/jnci/87.15.1114.
• Background Reddy BS, Rao CV, Seibert K. Evaluation of cyclooxygenase-2 inhibitor for potential chemopreventive properties in colon carcinogenesis. Cancer Res. 1996 Oct 15;56(20):4566-9.
• Background Tsujii M, DuBois RN. Alterations in cellular adhesion and apoptosis in epithelial cells overexpressing prostaglandin endoperoxide synthase 2. Cell. 1995 Nov 3;83(3):493-501. doi: 10.1016/0092-8674(95)90127-2.

Drugs

Indications