Start ART in first 3 months in infants with perinatal HIV

MADRID – Infants with perinatal HIV infection are significantly more likely to achieve viral suppression by age 12 months if they start antiretroviral therapy (ART) before age 3 months than if physicians wait until 3-6 months of age, Paolo Palma, MD, reported at the annual meeting of the European Society for Paediatric Infectious Diseases.

He presented a study of the factors associated with time to virologic sup

Dr. Paolo Palma

The purpose of this study was to identify the key factors involved in attaining early virologic control of perinatally acquired HIV. This information is necessary to lay the groundwork for planned future investigations of immunotherapeutic strategies designed to achieve sustained ART-free remission. Such strategies are most likely to be successful in very young children who have not yet built up a massive viral load, explained Dr. Palma of Bambino Gesù Children’s Hospital in Rome.

“A major obstacle to curing HIV infection is persistence of virus as integrated proviral DNA in long-lived cells even after many years on ART. ART-free HIV remission is more likely to occur if viral suppression is achieved very early in infection,” he said.

The median age of the 420 subjects at the time ART was initiated was 2.9 months. Their CD4 cell percentage was 34%, with a median CD4 cell count of 1,780 and an average viral load at baseline of 316,228 copies/mL.

At 12 months of age, 84% of patients had achieved viral suppression. In multivariate analyses adjusted for initial ART regimen and geographic location, three factors were associated with this outcome: younger age at ART onset, a lower baseline viral load, and a higher per

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This image is a 3D illustration of the HIV virus.

Indeed, for each 1-month increase in age at onset of ART, the likelihood of virologic response at age 12 months decreased by 16%. Similarly, the rate of virologic response at 1 year of age decreased by 15% for each 10 copies/mL increase in viral load at the start of ART. In contrast, the likelihood of virologic suppression at age 12 months increased by 10% for each 10% increase in CD4 cell percentage at the start of treatment.

Among the variables that proved unrelated to virologic suppression at 1 year of age were gender, AIDS status, feeding style (breastfed versus bottle-fed), and ethnicity.

Dr. Palma reported having no relevant financial disclosures.

bjancin@frontlinemedcom.com