Adverse perinatal outcomes associated with different classes of antiretroviral drugs in pregnant women with HIV

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OBJECTIVE: Women with HIV (WHIV) are at an increased risk of adverse perinatal outcomes compared to women without HIV, despite antiretroviral therapy (ART). There is evidence that the risk of adverse perinatal outcomes may differ according to ART regimen. We aimed to assess the risk of adverse perinatal outcomes among WHIV receiving different classes of ART, compared to women without HIV. DESIGN: A systematic review and meta-analysis. METHODS: We searched Medline, CINAHL, Global Health, and EMBASE for studies published between January 1, 1980, and July 14, 2023. We included studies which assessed the risk of 11 predefined adverse perinatal outcomes among WHIV receiving nonnucleoside reverse transcriptase inhibitor (NNRTI)-based ART, protease inhibitor based ART or integrase strand transfer inhibitor (INSTI)-based ART, compared to women without HIV. The perinatal outcomes assessed were preterm birth (PTB), very PTB (VPTB), spontaneous PTB (sPTB), low birthweight (LBW), very LBW (VLBW), term LBW, preterm LBW, small for gestational age (SGA), very SGA (VSGA), stillbirth and neonatal death (NND). Random effects meta-analyses examined the risk of each adverse outcome in WHIV receiving NNRTI-based, protease inhibitor based, or INSTI-based ART, compared with women without HIV. Subgroup and sensitivity analyses were conducted based on country income status, study quality, and timing of ART initiation. The protocol is registered with PROSPERO, CRD42021248987. RESULTS: Of 108 720 identified citations, 22 cohort studies including 191 857 women were eligible for analysis. We found that WHIV receiving NNRTI-based ART (mainly efavirenz or nevirapine) are at an increased risk of PTB (risk ratio 1.40, 95% confidence interval 1.27-1.56), VPTB (1.94, 1.25-3.01), LBW (1.63, 1.30-2.04), SGA (1.53, 1.17-1.99), and VSGA (1.48, 1.16-1.87), compared with women without HIV. WHIV receiving protease inhibitor based ART (mainly lopinavir/ritonavir or unspecified) are at an increased risk of PTB (1.88, 1.55-2.28), VPTB (2.06, 1.01-4.18), sPTB (16.96, 1.01-284.08), LBW (2.90, 2.41-3.50), VLBW (4.35, 2.67-7.09), and VSGA (2.37, 1.84-3.05), compared with women without HIV. WHIV receiving INSTI-based ART (mainly dolutegravir) are at an increased risk of PTB (1.17, 1.06-1.30) and SGA (1.20, 1.08-1.33), compared with women without HIV. CONCLUSION: The risks of adverse perinatal outcomes are higher among WHIV receiving ART compared with women without HIV, irrespective of the class of ART drugs. This underlines the need to further optimize ART in pregnancy and improve perinatal outcomes of WHIV.

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