Toxicity and efficacy of daily vs. weekly dapsone for prevention of Pneumocystis carinii pneumonia in children infected with human immunodeficiency virus. ACTG 179 Study Team. AIDS Clinical Trials Group.

Journal Article (Clinical Trial;Journal Article;Multicenter Study)

BACKGROUND: Dapsone is an alternative drug for Pneumocystis carinii pneumonia (PCP) prophylaxis in individuals intolerant to trimethoprim-sulfamethoxazole (T/S). There are, however, few data on the pharmacokinetics, toxicity or efficacy of dapsone in children. Design. Randomized, multicenter trial comparing daily (1 or 2 mg/kg) with weekly (4 mg/kg) dapsone regimens in 94 HIV-infected children intolerant to T/S. METHODS: Hematologic and hepatic toxicity was monitored, as well as the occurrence of skin rash, PCP or death. RESULTS: Initial pharmacokinetic data indicated that adequate serum dapsone concentrations were not achieved with the daily 1-mg/kg regimen; the daily dose was then increased to 2 mg/kg. Both short and long term hematologic toxicities were marginally greater in children receiving the daily 2 mg/kg compared with the weekly regimen. Allergic skin rashes were similar in children receiving the daily and weekly regimens (17% in both) and were not associated with prior history of rash with T/S. PCP occurred most frequently with the daily 1-mg/kg regimen (22.0 cases/100 patient years), least frequently with the daily 2-mg/kg regimen (0 case/100 patient years) and at intermediate frequency with the weekly regimen (9.5 cases/100 patient years). More deaths were observed in patients receiving the daily than the weekly regimen (8 vs. 2, respectively), although the deaths were not directly attributable to dapsone treatment. CONCLUSION: Although a weekly dapsone regimen of 4 mg/kg produced less hematologic toxicity than a daily regimen of 2 mg/kg, this advantage was offset by a trend toward higher breakthrough rates of PCP.

Full Text

Duke Authors

Cited Authors

  • McIntosh, K; Cooper, E; Xu, J; Mirochnick, M; Lindsey, J; Jacobus, D; Mofenson, L; Yogev, R; Spector, SA; Sullivan, JL; Sacks, H; Kovacs, A; Nachman, S; Sleasman, J; Bonagura, V; McNamara, J

Published Date

  • May 1999

Published In

Volume / Issue

  • 18 / 5

Start / End Page

  • 432 - 439

PubMed ID

  • 10353516

International Standard Serial Number (ISSN)

  • 0891-3668

Digital Object Identifier (DOI)

  • 10.1097/00006454-199905000-00007


  • eng

Conference Location

  • United States