Publications by authors named "Chenadec J"

Objective: Most data published on adolescents living with HIV (ALH) have been collected before the large diffusion of second-generation integrase strand transfer inhibitors (INSTI) among the pediatric population. We analyzed the nationwide ANRS-MIE CO10 Pediatric cohort to assess the changes over time in health and social outcomes of French ALH.

Design: The cohort enrolled children born in France since 1985 and, from 2005, children diagnosed with HIV at ≤13 years, including those born abroad if antiretroviral-naive at first medical care in France.

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Background: No study has compared the virological and immunological status of young people with perinatally-acquired HIV infection (P-HIV) with that of people with HIV adulthood (A-HIV) having a similar duration of infection.

Methods: 5 French cohorts of P-HIV and A-HIV patients with a known date of HIV-infection and receiving antiretroviral treatment (ART), were used to compare the following proportions of: virological failure (VF) defined as plasma HIV RNA ≥ 50 copies/mL, CD4 cell percentages and CD4:CD8 ratios, at the time of the most recent visit since 2012. The analysis was stratified on time since infection, and multivariate models were adjusted for demographics and treatment history.

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Objectives: Because NRTIs can have fetal toxicities, we evaluated a perinatal NRTI-sparing strategy to prevent perinatal HIV transmission. Our primary objective was to determine the proportion maintaining a viral load (VL) of <50 copies/mL up to delivery on darunavir/ritonavir monotherapy, without requiring treatment intensification.

Methods: In a one-arm, multicentre Phase 2 clinical trial, eligible patients in the first trimester of pregnancy on ART with plasma VL < 50 copies/mL received maintenance monotherapy with darunavir/ritonavir, 600/100 mg twice daily.

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Background: Antiretroviral therapy (ART) is remarkably effective in preventing perinatal transmission (PT) of HIV-1. We evaluated the PT rate in a population of women with widespread access to ART before conception.

Methods: The analysis included 14 630 women with HIV-1 who delivered from 2000 to 2017 at centers participating in the nationwide prospective multicenter French Perinatal Cohort (ANRS-EPF).

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In the ANRS French Perinatal Cohort, we compared outcomes in 830 HIV1-exposed infants who received either nevirapine (NVP) or zidovudine postnatal prophylaxis. At 1 month, anemia grade ≥2 was less frequent on NVP than zidovudine (2.9% vs.

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Article Synopsis
  • Early initiation of antiretroviral therapy (ART) in HIV-1-infected infants shows a positive impact on immune system health, specifically CD4 and CD8 T lymphocytes, but the effects in older children and adolescents need more study.
  • The ANRS-EP59-CLEAC study examined 27 children and 9 adolescents who started ART early compared to 19 children and 21 adolescents who started later, revealing that early treatment leads to higher CD8 T cell percentages.
  • Overall, while early ART benefits CD8 T cells significantly, the impact on CD4 T cells is less pronounced, suggesting late-treated pediatric patients can still effectively counteract CD4 T-cell loss through thymus production.
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  • The study aimed to investigate if using integrase strand transfer inhibitors (INSTIs) like raltegravir at conception is linked to birth defects or adverse pregnancy outcomes, in light of past concerns about dolutegravir.
  • Researchers analyzed data from a national French Perinatal Cohort, comparing women exposed to INSTIs during pregnancy with those taking darunavir/ritonavir, matching them on various factors like age and delivery year.
  • Results showed a slightly higher birth defect rate (6.7%) in infants exposed to raltegravir at conception, but not significantly different when compared to matched controls; no other significant pregnancy outcomes were found, highlighting the need for further research with larger data sets.
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  • Doctors aren't sure how safe taking rilpivirine is during pregnancy, so they recommend switching medications for pregnant women.
  • The study looked at women who were already taking rilpivirine when they got pregnant and compared those who stayed on it to those who switched to other treatments.
  • The results showed that women who continued taking rilpivirine had a lower chance of their virus levels going up during pregnancy, and both groups had similar healthy delivery outcomes.
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Background: High rates of liver enzyme elevation (LEE) in women receiving antiretroviral treatment (ART) during pregnancy have been reported, but causes remain unclear. We estimated the prevalence and risk factors of LEE in a national prospective multicenter cohort.

Methods: We studied 5748 pregnant women living with HIV enrolled in the French Perinatal Cohort 2005-2014, treated with ART, with no active hepatitis B or C coinfection.

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Objective: To determine whether changing antiretroviral therapy (ART) during pregnancy because of concern about fetal risks led to poorer virological outcomes.

Methods: All pregnancies in women with HIV-1 infection enrolled in the national multicenter prospective French Perinatal cohort at 14 week gestation or more were included between January 2005 and December 2015, if the mother was on ART at conception with a plasma viral load <50 copies/mL. The reasons for a change in the ART were analyzed according to treatment guidelines at the time of the pregnancy and defined as for safety concerns in the absence of reported maternal intolerance.

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Background: Chronic hepatitis B virus (HBV) or hepatitis C virus (HCV) infection is frequent in HIV-infected persons but their impact on pregnant HIV-infected women is understudied. We explored whether these coinfections are associated with adverse pregnancy outcomes and lower response to antiretroviral therapy (ART).

Methods: Pregnancies in HIV-1-infected women included in the ANRS French Perinatal Cohort between 2005 and 2013 were analyzed if HBV and HCV infection statuses were available.

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Background: Gag-specific T lymphocytes play a key role in the control of human immunodeficiency virus (HIV) replication. Their restoration will be important for future reservoir targeting strategies. In this study, we aimed to identify immune correlates of Gag-specific CD8 T-cell proliferation in youths with perinatally acquired HIV-1 infection.

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In perinatally HIV-1-infected youths living in France, we previously reported that Gag-specific CD4 and CD8 T cell proliferation is more frequently detected in patients of black ethnicity than in those of other ethnicities. We observed that black patients had higher levels of dendritic cells (DCs) than other patients. We aimed at studying the association of DC levels with Gag-specific T cell proliferation.

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Background: Durable HIV-1 remission after interruption of combined antiretroviral therapy (ART) has been reported in some adults who started treatment during primary infection; however, whether long-term remission in vertically infected children is possible was unknown. We report a case of a young adult perinatally infected with HIV-1 with viral remission despite long-term treatment interruption.

Methods: The patient was identified in the ANRS EPF-CO10 paediatric cohort among 100 children infected with HIV perinatally who started ART before 6 months of age.

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The ANRS-EP38-IMMIP study aimed to provide a detailed assessment of the immune status of perinatally infected youths living in France. We studied Gag-specific CD4 and CD8 T-cell proliferation and the association between the proliferation of these cells, demographic factors and HIV disease history. We included 93 youths aged between 15 and 24 years who had been perinatally infected with HIV.

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Article Synopsis
  • The study investigates the role of highly active antiretroviral therapy (ART) in preventing perinatal transmission (PT) of HIV-1, focusing on when treatment is initiated relative to conception.
  • An analysis of 8,075 mother-infant pairs from a French cohort found that 0.7% experienced PT, with zero transmissions among those who began ART before conception and maintained a low viral load (VL).
  • Results show that starting ART earlier significantly lowers PT rates, highlighting the importance of VL control before and during pregnancy in HIV-infected women.
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Background: Antiretroviral (ARV) regimens during pregnancy are highly effective in preventing mother-to-child transmission of human immunodeficiency virus (HIV). Congenital heart defects (CHDs) and anomalies in cardiac function have been reported in zidovudine (ZDV)-exposed uninfected children. We explored these associations in a large observational cohort and a randomized clinical trial.

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Article Synopsis
  • Maternal immune health, specifically measured by CD4 cell count during pregnancy, is linked to the higher risk of serious infections in HIV-exposed but uninfected (HEU) infants.
  • In a study involving nearly 7,640 HEU neonates, 699 experienced at least one serious infection within their first year, with notable increases in bacterial infections tied to lower maternal CD4 counts.
  • The results suggest a targeted risk for serious infections from encapsulated bacteria in these infants, while serious viral infections were not influenced by maternal CD4 levels.
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Background: Antiretroviral treatment interruption (TI) is not recommended in HIV-infected children. We aimed to evaluate the context and consequences of TI in clinical practice.

Methods: We investigated the probability and risk factors of a first TI in the 483 children treated with combined ART (cART) in the ANRS French national pediatric cohort.

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Background: Antiretroviral therapy (ART) has major benefits during pregnancy, both for maternal health and to prevent mother-to-child transmission of HIV. Safety issues, including teratogenic risk, need to be evaluated. We estimated the prevalence of birth defects in children born to HIV-infected women receiving ART during pregnancy, and assessed the independent association of birth defects with each antiretroviral (ARV) drug used.

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Background: Children born at the start of the human immunodeficiency virus (HIV) epidemic and infected during the perinatal period are now young adults living with the virus. Naive T-lymphocyte restoration is essential for the maintenance of a diverse T-cell receptor repertoire and for immunity to pathogens.

Methods: The ANRS-EP38-IMMIP study included 93 patients infected with HIV type 1 (HIV-1) during the perinatal period.

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Background:  Prevention of mother-to-child transmission (PMTCT) of human immunodeficiency virus (HIV) is usually based on zidovudine-containing regimens, despite potential toxicities. This multicenter trial evaluated whether lopinavir/ritonavir (LPV/r) monotherapy in HIV type 1-infected women not requiring antiretrovirals for themselves could control maternal viral load (VL).

Methods:  Overall, 105 pregnant women with baseline VL <30 000 copies/mL and CD4 ≥350 cells/µL were randomized to start open-label LPV/r 400/100 mg twice daily alone (monotherapy group, n = 69) or combined with zidovudine/lamivudine 300/150 mg twice daily (triple therapy group, n = 36) from 26 gestational weeks to delivery.

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Background: The genotoxicity of zidovudine has been established in experimental models. The objective of the study was to identify genotoxicity markers in cord blood cells from newborns exposed in utero to antiretroviral (ARV) combinations containing zidovudine.

Methods: Cells were investigated by karyotyping and gene expression analysis of the CD34(+) hematopoietic stem/progenitor cell (HPC) compartment.

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Article Synopsis
  • Some pregnant women who start treatment for HIV don’t get their virus levels low enough before giving birth.
  • The study looked at how pregnancy affects the immune response to the treatment in women starting it during or outside of pregnancy.
  • Results showed that pregnancy doesn't change how well the treatment works; however, many pregnant women didn’t get their virus levels low enough because they hadn’t been on treatment long enough.
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Background: Our aim was to study the impact of lifelong human immunodeficiency virus (HIV) disease history on the current immune and virological status of perinatally infected patients reaching adulthood. We evaluated blood cell-associated HIV DNA load as an indicator of cell-associated HIV reservoirs and an independent predictor of disease progression.

Methods: The ANRS-EP38-IMMIP Study included 93 patients aged 15-24 years who were infected with HIV during the perinatal period.

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