- Phase I: Patients receive docetaxel IV over 60 minutes and irinotecan IV over 30 minutes on days 1 and 8. Patients also receive oral celecoxib twice daily beginning on day 2. Courses repeat every 21 days in the absence of disease progression or unacceptable toxicity Cohorts of 3-6 patients receive escalating doses of docetaxel and irinotecan until the recommended phase II dose is determined. The recommended phase II dose is defined as the highest dose at which 0 of 3 or 1 of 6 patients experience dose-limiting toxicity.