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Discover 17,885 clinical trials near Houston, Texas. Find research studies in your area.
Showing 16941-16960 of 17,885 trials
NCT00500188
Primary objectives 1. To determine whether induction of apoptosis or inhibition of angiogenesis are involved in the antitumor activity of (Gleevec, Formerly STI-571) in patients with gastrointestinal stromal tumors (GIST) as assessed by Positron Emission Tomography (PET) scanning. 2. To determine whether dynamic computed tomography (CT), PET scan, molecular and histopathologic responses in GIST tumors from patients treated with Gleevec predict Disease-Free Survival (DFS) time. Secondary objectives 1. To determine the disease free survival of patients with resectable or partially resectable gastrointestinal stromal tumors treated with Gleevec preoperatively and continued for 2 years after resection of disease. 2. To assess the safety and tolerability of Gleevec given to patients with GI stromal tumors 3, 5, or 7 days preoperatively and continued postoperatively.
NCT00002307
To compare stavudine (d4T) and zidovudine (AZT) in slowing the progression of HIV disease. To compare the antiviral activity of d4T versus AZT as measured by plasma levels of p24 antigen and HIV viremia, and their relative efficacy by improvement and/or absence of adverse changes over time in laboratory parameters associated with HIV infection. To compare the safety of oral doses of d4T to AZT in patients with HIV infection.