Browsing by Author "Anekthananon T"

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    Effectiveness of non-nucleoside reverse-transcriptase inhibitor-based antiretroviral therapy in women previously exposed to a single intrapartum dose of nevirapine: a multi-country, prospective cohort study.
    (2010-Feb-16) Stringer JS; McConnell MS; Kiarie J; Bolu O; Anekthananon T; Jariyasethpong T; Potter D; Mutsotso W; Borkowf CB; Mbori-Ngacha D; Muiruri P; Ong'ech JO; Zulu I; Njobvu L; Jetsawang B; Pathak S; Bulterys M; Shaffer N; Weidle PJ; University of Alabama at Birmingham Centre for Infectious Disease Research in Zambia, Lusaka, Zambia. stringer@cidrz.org; CIDRZ; Centre for Infectious Disease Research in Zambia (CIDRZ)
    BACKGROUND: Intrapartum and neonatal single-dose nevirapine (NVP) reduces the risk of mother-to-child HIV transmission but also induces viral resistance to non-nucleoside reverse transcriptase inhibitor (NNRTI) drugs. This drug resistance largely fades over time. We hypothesized that women with a prior single-dose NVP exposure would have no more than a 10% higher cumulative prevalence of failure of their NNRTI-containing antiretroviral therapy (ART) over the first 48 wk of therapy than would women without a prior exposure. METHODS AND FINDINGS: We enrolled 355 NVP-exposed and 523 NVP-unexposed women at two sites in Zambia, one site in Kenya, and two sites in Thailand into a prospective, non-inferiority cohort study and followed them for 48 wk on ART. Those who died, discontinued NNRTI-containing ART, or had a plasma viral load >or=400 copies/ml at either the 24 wk or 48 wk study visits and confirmed on repeat testing were characterized as having failed therapy. Overall, 114 of 355 NVP-exposed women (32.1%) and 132 of 523 NVP-unexposed women (25.2%) met criteria for treatment failure. The difference in failure rates between the exposure groups was 6.9% (95% confidence interval [CI] 0.8%-13.0%). The failure rates of women stratified by our predefined exposure interval categories were as follows: 47 of 116 women in whom less than 6 mo elapsed between exposure and starting ART failed therapy (40%; p<0.001 compared to unexposed women); 25 of 67 women in whom 7-12 mo elapsed between exposure and starting ART failed therapy (37%; p = 0.04 compared to unexposed women); and 42 of 172 women in whom more than 12 mo elapsed between exposure and starting ART failed therapy (24%; p = 0.82 compared to unexposed women). Locally weighted regression analysis also indicated a clear inverse relationship between virologic failure and the exposure interval. CONCLUSIONS: Prior exposure to single-dose NVP was associated with an increased risk of treatment failure; however, this risk seems largely confined to women with a more recent exposure. Women requiring ART within 12 mo of NVP exposure should not be prescribed an NNRTI-containing regimen as first-line therapy.
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    Slow Acceptance of Universal Antiretroviral Therapy (ART) Among Mothers Enrolled in IMPAACT PROMISE Studies Across the Globe.
    (2019-Sep) Stranix-Chibanda L; Brummel S; Pilotto J; Mutambanengwe M; Chanaiwa V; Mhembere T; Kamateeka M; Aizire J; Masheto G; Chamanga R; Maluwa M; Hanley S; Joao E; Theron G; Nevrekar N; Nyati M; Santos B; Aurpibul L; Mubiana-Mbewe M; Oliveira R; Anekthananon T; Mlay P; Angelidou K; Tierney C; Ziemba L; Coletti A; McCarthy K; Basar M; Chakhtoura N; Browning R; Currier J; Fowler MG; Flynn P; Instituto of Pediatrics Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.; Kilimanjaro Christian Medical Centre, Moshi, Tanzania.; Harvard T.H. Chan School of Public Health, Botswana Harvard AIDS Institute Partnership, Gaborone, Botswana.; Centre Aids Prevention Research South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa.; Division of AIDS, National Institute of Allergy and Infectious Diseases, Bethesda, USA.; University of Zimbabwe College of Health Sciences, Paediatrics and Child Health, Harare, Zimbabwe. lstranix@uzchs-ctrc.org.; College of Medicine - Johns Hopkins Research Project, Blantyre, Malawi.; University of North Carolina Project, Lilongwe, Malawi.; University of Zimbabwe College of Health Sciences - Clinical Trials Research Centre, 15 Phillips Avenue, Belgravia, Harare, Zimbabwe.; Department of Infectious Diseases, St Jude Children's Research Hospital, Memphis, TN, USA.; Perinatal HIV Research Unit, Johannesburg, South Africa.; Division of Infectious Diseases, University of California Los Angeles, Los Angeles, USA.; Harvard T.H. Chan School of Public Health, Center for Biostatistics in AIDS Research in the Department of Biostatistics, Boston, USA.; Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, USA.; Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.; Department of Obstetrics and Gynaecology, Stellenbosch University, Cape Town, South Africa.; FHI 360, IMPAACT Operations Center, Durham, NC, USA.; University of Zimbabwe College of Health Sciences - Clinical Trials Research Centre, 15 Phillips Avenue, Belgravia, Harare, Zimbabwe. lstranix@uzchs-ctrc.org.; Frontier Science and Technology Research Foundation, Amherst, USA.; Department of Infectious Diseases, Hospital Federal dos Servidores do Estado, Rio de Janeiro, Brazil.; Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, USA.; Research Institute for Health Sciences, Chiang Mai University, Chiang Mai, China.; Hospital Nossa Senhora da Conceicao, Porto Alegre, Brazil.; Laboratorio de AIDS e Imunologia Molecular - Fiocruz, Hospital Geral de Nova Iguacu, Rio de Janeiro, Brazil.; Makerere University - Johns Hopkins University Research Collaboration, Kampala, Uganda.; Department of Obstetrics and Gynaecology, BJ Government Medical College, Pune, India.; Centre for Infectious Disease Research in Zambia, Lusaka, Zambia.; CIDRZ; Centre for Infectious Disease Research in Zambia (CIDRZ)
    The PROMISE trial enrolled asymptomatic HIV-infected pregnant and postpartum women not eligible for antiretroviral treatment (ART) per local guidelines and randomly assigned proven antiretroviral strategies to assess relative efficacy for perinatal prevention plus maternal/infant safety and maternal health. The START study subsequently demonstrated clear benefit in initiating ART regardless of CD4 count. Active PROMISE participants were informed of results and women not receiving ART were strongly recommended to immediately initiate treatment to optimize their own health. We recorded their decision and the primary reason given for accepting or rejecting the universal ART offer after receiving the START information. One-third of participants did not initiate ART after the initial session, wanting more time to consider. Six sessions were required to attain 95% uptake. The slow uptake of universal ART highlights the need to prepare individuals and sensitize communities regarding the personal and population benefits of the "Treat All" strategy.