title: Postexposure chemoprophylaxis: approval criteria for clinical trials.
abstract: Five scenarios are proposed that investigators and clinicians might consider in the evaluation of an investigational drug for postexposure chemoprophylaxis. They are (a) safety as the only standard required for an indication for postexposure chemoprophylaxis; (b) efficacy of the drug for treatment of HIV-infected patients as a sufficient criterion for an indication for postexposure chemoprophylaxis; (c) a classic placebo-controlled trial as the basis for evaluation of postexposure chemoprophylaxis; (d) a clinical trial design that evaluates outcome in relation to varying times from exposure to initiation of treatment; and (e) combination therapy. Federal regulations are sufficiently flexible to allow demonstration of safety and efficacy of an investigational drug for this indication. The necessary element is that both safety and efficacy be demonstrated in an objective and reliable manner.
authors.affiliation: Division of Antiviral Drug Products, U.S. Food and Drug Administration, Rockville, Maryland 20857.
authors.forename: P R
authors.initials: PR
authors.lastname: Beninger
authors.forename: E C
authors.initials: EC
authors.lastname: Cooper
mesh_terms: D000998:Antiviral Agents / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D004341:Drug Evaluation; D015658:HIV Infections / Q000188:drug therapy / Q000517:prevention & control*; D006291:Health Policy; D006801:Humans; D012107:Research Design; D014481:United States
chemical_list: D000998:Antiviral Agents