• J. Acquir. Immune Defic. Syndr. · Apr 2011

    Randomized Controlled Trial

    Increased risk of severe infant anemia after exposure to maternal HAART, Botswana.

    • Scott Dryden-Peterson, Roger L Shapiro, Michael D Hughes, Kathleen Powis, Anthony Ogwu, Claire Moffat, Sikhulile Moyo, Joseph Makhema, Max Essex, and Shahin Lockman.
    • Department of Medicine, Division of Infectious Diseases, Brigham and Women's Hospital, Boston, MA 02115, USA. scott_peterson@post.harvard.edu
    • J. Acquir. Immune Defic. Syndr. 2011 Apr 15; 56 (5): 428-36.

    BackgroundMaternal highly-active antiretroviral therapy (HAART) reduces mother-to-child HIV transmission but may increase the risk for infant anemia.MethodsThe incidence of first severe anemia (grade 3 or 4, Division of AIDS 2004 Toxicity Table) was assessed among HIV-uninfected infants in the Mashi and Mma Bana mother-to-child HIV transmission prevention trials in Botswana. Severe anemia rates were compared between 3 groups: infants exposed to maternal HAART in utero and during breastfeeding (BF) and 1 month of postnatal zidovudine (ZDV) (HAART-BF); infants exposed to maternal ZDV in utero, 6 months of postnatal ZDV, and BF (ZDV-BF); and infants exposed to maternal ZDV in utero, 1 month of postnatal ZDV, and formula-feeding (ZDV-FF).ResultsA total of 1719 infants were analyzed-691 HAART-BF, 503 ZDV-BF, and 525 ZDV-FF. Severe anemia was detected in 118 infants (7.4%). By 6 months, 12.5% of HAART-BF infants experienced severe anemia, compared with 5.3% of ZDV-BF (P < 0.001) and 2.5% of ZDV-FF infants (P < 0.001). In adjusted analysis, HAART-BF infants were at greater risk of severe anemia than ZDV-BF or ZDV-FF infants (adjusted odds ratios 2.6 and 5.8, respectively; P < 0.001). Most anemias were asymptomatic and improved with iron/multivitamin supplementation and cessation of ZDV exposure. However, 11 infants (0.6% of all infants) required transfusion for symptomatic anemia. Microcytosis and hypochromia were common among infants with severe anemia.ConclusionsExposure to maternal HAART starting in utero was associated with severe infant anemia. Confirmation of this finding and possible strategies to mitigate hematologic toxicity warrant further study.

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