Clinical Cancer Research, Vol 2, Issue 1 37-41, Copyright © 1996 by American Association for Cancer Research

ARTICLES

Phase I trial of sulindac plus 5-fluorouracil and levamisole: potential adjuvant therapy for colon carcinoma

FA Sinicrope, R Pazdur and B Levin
Department of Gastrointestinal Medical Oncology and Digestive Diseases, University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA.

Epidemiological studies indicate that nonsteroidal anti-inflammatory agents may reduce colorectal cancer incidence and mortality. Moreover, sulindac has been shown to attenuate the growth and progression of colonic neoplasms in an experimental model of colon carcinoma and in patients with familial adenomatous polyposis. To determine whether sulindac (300 mg/day) would increase toxicity associated with 5-fluorouracil (5-FU) and levamisole, 15 patients with advanced colorectal cancer were treated. Median treatment duration was 3 (range, 0.6-6.0) months, and median age was 56 years (33% >/= 60 years). All patients had failed prior 5-FU-based therapy, had measurable disease, and were evaluable for toxicity. Grade III/IV granulocytopenia occurred in four patients; three patients had received prior pelvic irradiation resulting in a predisposition to myelosuppression. Two patients developed grade III anemia, and occult gastrointestinal bleeding was suspected in one. No other grade II or greater gastrointestinal or other nonhematological toxicity occurred. One patient had a partial response, 3 patients had disease stabilization, and 10 patients progressed on study. Our results indicate that sulindac does not significantly increase short-term toxicity associated with 5-FU and levamisole. To determine whether sulindac increases the efficacy of adjuvant chemotherapy, we propose a phase III randomized trial in patients with lymph node-positive colon cancer.

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				H. P. Ciolino, C. J. MacDonald, O. S. Memon, S. E. Bass, and G. C. Yeh Sulindac regulates the aryl hydrocarbon receptor-mediated expression of Phase 1 metabolic enzymes in vivo and in vitro Carcinogenesis, August 1, 2006; 27(8): 1586 - 1592. [Abstract] [Full Text] [PDF]