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Antiretroviral therapy (ART) has had dramatic effects on morbidity and mortality, but adverse effects and multiclass resistance continue to threaten the longevity of many combination therapies. Class-sparing regimens have theoretical appeal, but regimens consisting of three NRTIs have uniformly underperformed when compared with standard regimens. Preliminary studies have shown promising results for a quadruple-NRTI regimen consisting of tenofovir, FTC, AZT, and abacavir, but only now has the regimen been tested against standard therapies in a large-scale trial.
The ALTAIR study — described by David Cooper at the 5th IAS Conference on HIV Pathogenesis, Treatment and Prevention — involved 322 treatment-naive, HLA-B*5701–negative patients who w…