hiv info source nyu medical center bellevue hospital center

A5221 - A Strategy Study of Immediate Versus Deferred Initiation of Antiretroviral Therapy for HIV-Infected Persons Treated for Tuberculosis (TB) with CD4 <200 Cells/mm3


Eligible candidates:

  • Must be HIV infected individuals at least 13 years old who have never taken anti-HIV drugs.
  • have CD4 count of CD4 <200 Cells/mm3
  • Have recently started TB treatment with rifampin (RIF) or other similar drug.
  • Do not have known resistance to 2 or more anti-TB drugs.

Study Objective:
A5221 is a study to see whether people infected with HIV who are being treated for tuberculosis (TB) should start taking anti-HIV drugs earlier or later compared to when they start their anti-TB drugs. The study will compare the number of people surviving without getting a new AIDS-defining illness at the end of the study between people who start anti-HIV drugs as soon as they enter the study and people who don't start their anti-HIV drugs until later.


Study Scheme:
800 subjects will participate in this study, in the following treatment groups:

  • Group A: Early anti-HIV treatment (within about 2 weeks after start of TB treatment)
  • Group B: Delayed anti-HIV treatment (8-12 weeks after start of TB treatment)
Participants will be randomly assigned to a group at entry. The study is 48 weeks long.

Study Drugs:

  • Efavirenz (EFV, Sustiva, or Stocrin) once a day (at bedtime)
  • Emtricitabine (FTC, or Emtriva) once a day
  • Tenofovir (TDF, or Viread) once a day

Study Status: Open for enrollment

Study Staff:

Study Sponsors:

  • AIDS Clinical Trials Group (NIH)

Study Volunteers Receive:

  • Cost-free lab work
  • Transportation reimbursement