Prevention of Milk-Borne Transmission of HIV-1C in Botswana (Mashi)

The purpose of this study is to find the most effective and safe treatment to prevent the passage of HIV from an infected mother to her baby.

To assess the effectiveness of the addition of a single dose of nevirapine (NVP) to Zidovudine (ZDV, also known as AZT) as used in the Botswana mother-to-child transmission (MTCT) National Program, in reducing transmission of HIV-1 from mother to child. To determine if maternal NVP (per HIVNET 012 protocol) is necessary in the setting of maternal ZDV from 34 weeks gestation through delivery AND single-dose prophylactic infant NVP at birth plus ZDV from birth to 4 weeks for the reduction of transmission of HIV-1 from mother to child. To assess the effect of prophylactic AZT given to infants during breast feeding on HIV transmission. To confirm the safety and tolerance of one dose of NVP given to mothers and infants To evaluate the safety and tolerance of AZT given to infants for up to 6 months of age To determine the association between assigned infant feeding strategy and maternal morbidity and mortality To determine the rates of virologic response to NNRTI-containing HAART at 26 and 52 weeks after initiating treatment, among HIV+ women who previously received single dose NVP versus placebo during labour.

All women received a background of zidovudine from 34 weeks' gestation through delivery, and all infants received single-dose nevirapine at birth and zidovudine from birth through 1 month. Women were randomized to receive either single-dose nevirapine or placebo during labor.

All women received a background of zidovudine from 34 weeks'gestation through delivery, and all infants received single-dose nevirapine at birth and zidovudine from birth through 1 month. Women were randomized to receive either single-dose nevirapine or placebo during labor.

Inclusion Criteria: Mothers must be no more than 34 weeks pregnant, intending to carry to term, intending to stay in area for at least 7 months, and consenting to HIV-1 testing and participation; HIV-1 infected by ELISA confirmed by Western blot; etc.

Thior I, Lockman S, Smeaton LM, Shapiro RL, Wester C, Heymann SJ, Gilbert PB, Stevens L, Peter T, Kim S, van Widenfelt E, Moffat C, Ndase P, Arimi P, Kebaabetswe P, Mazonde P, Makhema J, McIntosh K, Novitsky V, Lee TH, Marlink R, Lagakos S, Essex M; Mashi Study Team. Breastfeeding plus infant zidovudine prophylaxis for 6 months vs formula feeding plus infant zidovudine for 1 month to reduce mother-to-child HIV transmission in Botswana: a randomized trial: the Mashi Study. JAMA. 2006 Aug 16;296(7):794-805. doi: 10.1001/jama.296.7.794.

Shapiro RL, Thior I, Gilbert PB, Lockman S, Wester C, Smeaton LM, Stevens L, Heymann SJ, Ndung'u T, Gaseitsiwe S, Novitsky V, Makhema J, Lagakos S, Essex M. Maternal single-dose nevirapine versus placebo as part of an antiretroviral strategy to prevent mother-to-child HIV transmission in Botswana. AIDS. 2006 Jun 12;20(9):1281-8. doi: 10.1097/01.aids.0000232236.26630.35.

Lockman S, Shapiro RL, Smeaton LM, Wester C, Thior I, Stevens L, Chand F, Makhema J, Moffat C, Asmelash A, Ndase P, Arimi P, van Widenfelt E, Mazhani L, Novitsky V, Lagakos S, Essex M. Response to antiretroviral therapy after a single, peripartum dose of nevirapine. N Engl J Med. 2007 Jan 11;356(2):135-47. doi: 10.1056/NEJMoa062876.

Powis KM, Smeaton L, Hughes MD, Tumbare EA, Souda S, Jao J, Wirth KE, Makhema J, Lockman S, Fawzi W, Essex M, Shapiro RL. In-utero triple antiretroviral exposure associated with decreased growth among HIV-exposed uninfected infants in Botswana. AIDS. 2016 Jan;30(2):211-20. doi: 10.1097/QAD.0000000000000895.

Dryden-Peterson S, Jayeoba O, Hughes MD, Jibril H, McIntosh K, Modise TA, Asmelash A, Powis KM, Essex M, Shapiro RL, Lockman S. Cotrimoxazole prophylaxis and risk of severe anemia or severe neutropenia in HAART-exposed, HIV-uninfected infants. PLoS One. 2013 Sep 23;8(9):e74171. doi: 10.1371/journal.pone.0074171. eCollection 2013.

Dryden-Peterson S, Shapiro RL, Hughes MD, Powis K, Ogwu A, Moffat C, Moyo S, Makhema J, Essex M, Lockman S. Increased risk of severe infant anemia after exposure to maternal HAART, Botswana. J Acquir Immune Defic Syndr. 2011 Apr 15;56(5):428-36. doi: 10.1097/QAI.0b013e31820bd2b6.

Powis KM, Smeaton L, Ogwu A, Lockman S, Dryden-Peterson S, van Widenfelt E, Leidner J, Makhema J, Essex M, Shapiro RL. Effects of in utero antiretroviral exposure on longitudinal growth of HIV-exposed uninfected infants in Botswana. J Acquir Immune Defic Syndr. 2011 Feb 1;56(2):131-8. doi: 10.1097/QAI.0b013e3181ffa4f5.