Hoechst Marion Roussel

To obtain preliminary information on the safety, tolerability, and antiretroviral activity of HBY 097 alone or in combination with zidovudine ( AZT ) versus AZT alone.
PER 1/19/96 AMENDMENT: AZT monotherapy arm was eliminated.

To characterize the safety profile of MDL 28574A following both acute and subchronic dosing in HIV-positive patients. To determine the MTD of both acute and subchronic doses of this drug when administered as oral solution. To determine the pharmacokinetic profile of MDL 28574A and castanospermine (from which MDL 28574A is derived) following both acute and subchronic dosing.

To characterize the safety and efficacy of fixed doses of MDL 28,574A administered alone and in combination with zidovudine ( AZT ) in patients with asymptomatic or mildly symptomatic HIV infection. To examine the demographic effects on population pharmacokinetics and pharmacodynamics of MDL 28,574A alone and in combination with AZT.