Document 2868 DOCN M94A2868 TI The interim safety results and pharmacokinetics of a combination of R89439 and zidovudine therapy in HIV-infection. DT 9412 AU Colebunders R; Vandenbruaene M; Delescluse J; Vander Endt D; De Cree J; De Brabander M; Peeters M; Van den Broeck R; Stoffels P; Tropical Institute of Antwerp, Belgium. SO Int Conf AIDS. 1994 Aug 7-12;10(1):206 (abstract no. PB0252). Unique Identifier : AIDSLINE ICA10/94369707 AB R89439 (loviride) is the most potent product of the alpha-APA series (A group of Non Nucleoside Reverse Transcriptase Inhibitors) with an IC50 of 1.7 ng/ml and good oral bioavailability (Cp at 8h = 130 ng/ml). OBJECTIVES: The objectives of the present trial were to document the possible pharmacokinetic interactions between loviride on zidovudine and to assess the safety of the combination therapy of loviride 50 mg or 100 mg t.i.d. with zidovudine. METHODS: 18 patients were randomized in three groups of 6 patients in a double blind, double dummy placebo-controlled clinical trial. Patients received either loviride 100 mg t.i.d., 50 mg t.i.d. or placebo together with zidovudine. HIV1-positive patients with CD4 > 50 and < 350 CELLS/mm3 were eligible if they had taken zidovudine since more than 18 months. RESULTS: It was concluded that the pharmacokinetics of zidovudine were not affected by cotreatment with loviride 50 and 100 mg t.i.d. Sofar the codes have not been broken for the interim safety analysis. The incidence of adverse events was not significantly different between the three treatment groups, except for diarrhea which was only reported in one group. No clinically important laboratory changes were noted except for increased liver enzymes in one group, which progressively normalised after discontinuation of treatment. CONCLUSION: Adverse experiences although numerous were mostly mild to moderate. The complete safety and efficacy results will be reported at the conference. DE Acetamides/ADMINISTRATION & DOSAGE/ADVERSE EFFECTS/ PHARMACOKINETICS/*THERAPEUTIC USE Acetophenones/ADMINISTRATION & DOSAGE/ADVERSE EFFECTS/ PHARMACOKINETICS/*THERAPEUTIC USE Antiviral Agents/ADMINISTRATION & DOSAGE/ADVERSE EFFECTS/ PHARMACOKINETICS/*THERAPEUTIC USE Double-Blind Method Drug Interactions Human HIV Infections/*DRUG THERAPY Reverse Transcriptase/*ANTAGONISTS & INHIB Safety Treatment Outcome Zidovudine/ADMINISTRATION & DOSAGE/ADVERSE EFFECTS/ PHARMACOKINETICS/*THERAPEUTIC USE CLINICAL TRIAL MEETING ABSTRACT RANDOMIZED CONTROLLED TRIAL SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).