Dolutegravir/Lamivudine in Treatment-Naïve Pregnant Women

Protocol Number: FH-94 Study Objetives: Primary: * To evaluate the virological response to Dolutegravir/Lamivudine in naive pregnant women with HIV who are starting antiretroviral therapy and vertical transmission in exposed neonates. Secondary: * To evaluate the incidence of maternal adverse events. * To evaluate perinatal outcomes at delivery. * To evaluate maximum virological suppression at delivery. * To evaluate the incidence of changes in body weight exceeding what is expected for gestation. * To evaluate the immune response based on changes in CD4, CD8, and CD4/CD8 ratio values during pregnancy. * Assess baseline resistance and the development of resistance to virological failure to integrase inhibitors and INTRs during treatment with DTG+3TC or DTG+TDF/XTC or DTG+TAF/FTC. * To evaluate the incidence of HIV infection in children that breastfeed. * To evaluate safety outcomes and virological response of DTG+3TC compared to DTG+TDF/XTC or DTG+TAF/FTC. Exploratory: * To explore the non-inferiority of DTG+3TC therapy compared to DTG+TDF/XTC or DTG+TAF/FTC treatment. * To evaluate the frequency of antiretroviral therapy withdrawal or modification before delivery.