( fferent between the two study treatment...)Four-Drug AIDS Treatment Regimen Deemed Of No Use,Health

fferent between the two study treatment groups. In subgroup analyses, increased risk for virologic failure was seen in non-Hispanic black patients. At 3 years, the HIV-1 RNA level was less than 200 copies/mL in 90 percent of 169 and 92 percent of 156 patients receiving the 3-drug and 4-drug regimens, respectively, and less than 50 copies/mL in 85 percent of 169 and 88 percent of 156 patients.

"We found no significant differences over 3 years between the standard 3-drug regimen of zidovudine/lamivudine plus efavirenz and the 4-drug regimen of zidovudine/lamivudine/abacavir plus efavirenz for the initial treatment of HIV-1 infection with regard to initial virologic response, time to virologic failure, CD4 cell count, adverse events, adherence, resistance mutations at virologic failure, or treatment or study discontinuation rates," the authors write.

"High rates of virologic suppression achieved in this study support current guidelines that recommend 2 nucleosides plus efavirenz among preferred regimens for the initial treatment of HIV-1 infection. Adding abacavir as a fourth drug to the standard initial 3-drug regimen did not change toxicity or adherence but provided no additional benefit," the researchers conclude.

Source: Eurekalert
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