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In a randomized, double-blind, large, simple trial, the safety and efficacy of two weight-adjusted dose levels of stavudine were evaluated in patients with advanced human immunodeficiency virus (HIV) infection. All patients were refractory to or intolerant of both zidovudine and didanosine. Patients weighing > or = 60 kg received 20 or 40 mg of stavudine twice daily. The dose was reduced to 15 or 30 mg for patients weighing 40-59 kg and to 10 or 20 mg for those weighing < 40 kg. The primary efficacy end points were survival and time to clinical progression of HIV disease. The primary safety end point was time to dose-limiting neuropathy. A total of 8127 patients were enrolled as of 31 July 1993. Although many patients who might have benefitted from stavudine were reached by the parallel-track program, a review of demographic data revealed disproportionate representation by white men from large metropolitan areas on both coasts.

The purpose of the didanosine Expanded Access Program was to provide a needed antiretroviral agent to individuals who were unable to tolerate other therapy for human immunodeficiency virus infection or in whom such therapy was failing. The logistics of establishing this program are described, and the results of on-site auditing that confirmed the validity of the data obtained through this program are presented.

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