Abstract
OBJECTIVES: To evaluate the use of raltegravir with unboosted atazanavir in combination with one nucleoside reverse transcriptase inhibitor (NRTI) (lamivudine or emtricitabine) as a potentially well-tolerated once-daily (qd) maintenance regimen.
METHODS: We compared the pharmacokinetics of raltegravir 400 mg twice daily (bid) with raltegravir 800 mg qd in HIV-infected patients (n=17) on unboosted atazanavir (600 mg qd) in combination with lamivudine or emtricitabine.
RESULTS: The area under the plasma concentration vs. time curve for a dose interval t (AUC0 -t ) of 800 mg qd divided by 2 was not significantly different from the AUC0 -t of 400 mg bid (P=0.664) but the minimum concentration (C min ) was 72% lower with the qd regimen (P=0.002). The regimen was well tolerated and the viral load remained undetectable in all patients during the 6 weeks of the study follow-up.
CONCLUSIONS: A qd regimen of raltegravir 800 mg, atazanavir 600 mg and lamivudine or emtricitabine resulted in favourable pharmacokinetic profiles and good short-term safety and efficacy data. Larger phase IIb studies are needed to explore this novel regimen.
Original language | English |
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Pages (from-to) | 449-52 |
Number of pages | 4 |
Journal | HIV Medicine |
Volume | 14 |
Issue number | 7 |
DOIs | |
Publication status | Published - Aug 2013 |
Externally published | Yes |
Keywords
- Adolescent
- Adult
- Aged
- Aged, 80 and over
- Anti-HIV Agents/administration & dosage
- Atazanavir Sulfate
- Drug Administration Schedule
- Drug Therapy, Combination
- Female
- HIV Infections/drug therapy
- HIV-1/physiology
- Humans
- Male
- Middle Aged
- Oligopeptides/administration & dosage
- Pyridines/administration & dosage
- Pyrrolidinones/administration & dosage
- Raltegravir Potassium
- Reverse Transcriptase Inhibitors/pharmacokinetics
- Viral Load
- Young Adult