Publications by authors named "Charreau I"

Article Synopsis
  • - The study examined cytomegalovirus (CMV) risk factors in men who have sex with men, focusing on participants in the HIV pre-exposure prophylaxis trial IPERGAY-ANRS.
  • - Of the 417 participants, 382 were already CMV positive, showing a high prevalence rate of 91.6%, and 10 new cases were identified during the study.
  • - Findings suggest that having many sexual partners increases the likelihood of CMV, with shedding observed in participants who seroconverted.
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  • A study assessed the prevalence and risk factors of Human Herpesvirus-8 (HHV-8) infection among HIV-negative men who have sex with men (MSM) taking pre-exposure prophylaxis (PrEP) in France and Canada, finding a 24% seroprevalence at the start and an incidence rate of 2.66 per 100 person-years.
  • Key risk factors for seropositivity included older age, a high number of sexual partners, use of chemsex, and HSV-2 positivity.
  • Among those already infected, 32% showed HHV-8 in saliva, highlighting the potential for oral transmission of the virus in this group.
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  • The study focused on the prevalence and incidence of hepatitis E virus (HEV) among men who have sex with men (MSM) in a trial for pre-exposure prophylaxis (PrEP).
  • Out of 416 MSM participants, 14.9% tested positive for HEV at the start, with only older age being a significant factor linked to positivity.
  • The overall incidence rate for new HEV infections over an average follow-up of 2.1 years was low at 1.19% per 100 person-years, suggesting that sexual transmission is not a major concern for HEV in this group, unlike hepatitis A virus (HAV).
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  • Vaccination against hepatitis A (HAV) and hepatitis B (HBV) is strongly recommended for men who have sex with men (MSM), with a study evaluating vaccine uptake during the ANRS IPERGAY pre-exposure prophylaxis (PrEP) trial.
  • Out of 427 MSM participants analyzed, a significant number were non-immune to HAV (50.4%), with high vaccination uptake: 96.1% received at least one dose of HAV vaccine, and 97.6% of HBV non-immune participants received at least one HBV vaccine dose.
  • Overall, complete vaccination resulted in a high rate of immunity, showing that PrEP visits are crucial for offering vaccination to at-risk MSM who are
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Objective: High rates of sexually transmitted infections (STIs) have been reported among pre-exposure prophylaxis (PrEP) users. We wished to assess the incidence and risk factors for recurrent STIs.

Design: The ANRS IPERGAY trial was a prospective study investigating PrEP among MSM and transgender women in outpatient clinics in France and Canada.

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Objectives: We aimed to assess among men who have sex with men (MSM) risk factors for HIV infection, to identify those who require urgent pre-exposure prophylaxis (PrEP) prescription.

Methods: All participants enrolled in the placebo arm of the ANRS IPERGAY trial, or infected between screening and day 0, were included. Baseline characteristics were described and HIV incidence rate ratios (RRs) were estimated with their 95% CIs.

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Background: Tenofovir diphosphate (TFV-DP) concentration in dried blood spots (DBSs) is a reliable pharmacokinetics biomarker of adherence to tenofovir disoproxil fumarate (TDF). We aimed to use DBSs to estimate pill intake among participants using on-demand pre-exposure prophylaxis (PrEP) and to identify predictive factors associated with higher TFV-DP concentrations.

Methods: DBSs were collected at the last study visit of the open-label phase of the ANRS IPERGAY study, assessing on-demand oral TDF/emtricitabine for PrEP among MSM and transgender female participants.

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Article Synopsis
  • HIV-related inflammation is linked to negative health outcomes and was studied in participants from a PrEP trial who later became HIV-positive.* -
  • Inflammation levels were highest during the initial infection period but normalized within 6 to 12 months.* -
  • Early initiation of antiretroviral therapy could reduce the duration of harmful inflammation linked to HIV.*
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Background: Mycoplasma genitalium (MG) is an emerging pathogen among men who have sex with men (MSM) with raising rates of antibiotic resistance. This study assessed the prevalence and incidence of MG infection in MSM enrolled in the open-label phase of the ANRS IPERGAY trial with on-demand tenofovir disoproxil fumarate/emtricitabine for human immunodeficiency virus prevention and the impact of doxycycline post-exposure prophylaxis (PEP).

Methods: 210 subjects were tested at baseline and at 6 months by real-time PCR assays for MG detection in urine samples and oropharyngeal and anal swabs.

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Introduction: Daily pre-exposure prophylaxis (PrEP) with tenofovir disoproxil fumarate/emtricitabine (TDF/FTC) is associated with a small but statistically significant decrease in estimated glomerular filtration rate (eGFR). We assessed the renal safety of on-demand PrEP with TDF/FTC in HIV-1 uninfected men.

Methods: We used data from the randomized double-blind placebo-controlled ANRS-IPERGAY trial and its open-label extension conducted between February 2012 and June 2016 among HIV-uninfected MSM starting on-demand PrEP.

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Article Synopsis
  • HPV infection is more prevalent in men who have sex with men (MSM) using preexposure prophylaxis (PrEP) compared to those without, similar to MSM living with HIV.
  • In a study involving 162 HIV-negative MSM on PrEP, HPV was detected in a high percentage of samples taken from anal (92%), penile (32%), and oral (12%) sites, with high-risk genotypes found in many cases.
  • The study noted high incidence rates of HPV infections and various cytology results, highlighting that PrEP users face significant risks for HPV similar to their HIV-positive counterparts.
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Background: A high incidence of acute hepatitis C virus (HCV) (AHCV) infection has been reported among at-risk HIV-negative MSM. The optimal strategy for early diagnosis of AHCV in this population is not clearly defined.

Methods: In the ANRS IPERGAY PrEP trial, among high-risk HIV-negative MSM, HCV serology and serum alanine aminotransferase (ALT) were used for screening at enrollment and during follow-up.

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Background: ANRS IPERGAY found that on-demand pre-exposure prophylaxis (PrEP) with oral tenofovir disoproxil fumarate plus emtricitabine was associated with an 86% relative reduction of HIV-1 incidence compared with placebo among men who have sex with men at high risk of HIV. We aimed to investigate whether on-demand PrEP was similarly effective among individuals with lower exposure to HIV risk.

Methods: Participants in the ANRS IPERGAY trial were randomly assigned to receive PrEP (fixed-dose combination of 300 mg tenofovir disoproxil fumarate and 200 mg emtricitabine per pill) or placebo.

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We evaluated the impact of on-demand oral tenofovir disoproxil fumarate (TDF)/emtricitabine (FTC) for pre-exposure prophylaxis (PrEP) on herpes simplex virus (HSV)-1/2 incidence among men who have sex with men (MSM) enrolled in the ANRS IPERGAY trial. Serum samples were tested at baseline and at the last visit for HSV-1/2 antibodies. Overall HSV-1 incidence was 11.

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Background: Standard genotypic tests performed on HIV DNA from patients on suppressive ART, with previous resistance-associated mutations (RAMs) detected in their plasma, underestimate resistance. We thus compared ultra-deep sequencing (UDS) with bulk sequencing of DNA to detect RAMs previously identified in plasma.

Methods: We sequenced the DNA of 169 highly treatment experienced patients with suppressed viraemia (ANRS 138-EASIER trial).

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Background: The IPERGAY ANRS trial showed that on-demand preexposure prophylaxis (PrEP) with tenofovir (TDF) and emtricitabine (FTC) was highly effective in preventing HIV infection among highly exposed MSM. Here, we analyzed drug resistance-associated mutations (RAMs) among all participants who acquired HIV infection during this trial.

Methods: Resistance was analyzed on frozen plasma at the time of HIV diagnosis among participants enrolled in the double-blind and open-label phases of the ANRS IPERGAY trial.

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Background: Increased rates of sexually transmitted infections (STIs) have been reported among men who have sex with men. We aimed to assess whether post-exposure prophylaxis (PEP) with doxycycline could reduce the incidence of STIs.

Methods: All participants attending their scheduled visit in the open-label extension of the ANRS IPERGAY trial in France (men aged 18 years or older having condomless sex with men and using pre-exposure prophylaxis for HIV with tenofovir disoproxil fumarate plus emtricitabine) were eligible for inclusion in this open-label randomised study.

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Objectives: We undertook the economic evaluation of the double-blind randomized ANRS-IPERGAY trial, which showed the efficacy of on-demand preexposure prophylaxis (PrEP) with tenofovir disoproxil fumarate (TDF)-emtricitabine (FTC) in preventing HIV infection among high-risk MSM.

Design And Methods: The economic evaluation was prospective. Counseling, drugs (TDF-FTC at &OV0556;500.

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Background: Data for on-demand pre-exposure prophylaxis (PrEP) are scarce. We implemented a cohort study to assess its efficacy, safety, and effect on sexual behaviour.

Methods: We invited men and transgender women who have sex with men, previously enrolled in the randomised placebo-controlled ANRS IPERGAY trial at seven sites (six in France and one in Canada), to participate in an open-label extension with on-demand tenofovir disoproxil fumarate (300 mg) and emtricitabine (200 mg) to be taken before and after sexual intercourse.

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Objectives: In the ANRS IPERGAY pre-exposure prophylaxis (PrEP) trial, a single dose of tenofovir disoproxil fumarate and emtricitabine was taken orally 2-24 h before sexual intercourse. A sub-study was conducted to assess the pharmacokinetics of tenofovir and emtricitabine in blood, saliva and rectal tissue following this initial oral intake.

Methods: Plasma, PBMC, saliva and rectal tissue sampling was performed over 24 h in 12 seronegative men before enrolment in the ANRS IPERGAY trial, following a single dose of 600 mg tenofovir disoproxil fumarate/400 mg emtricitabine.

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Background: In the ANRS EASIER trial where treatment-experienced patients switched from enfuvirtide (ENF) to raltegravir (RAL), a high incidence of transaminase elevation was reported in the RAL arm.

Methods: We compared the incidence of emergent liver enzyme elevations (LEE) of grade 2 or more among patients randomized to the maintenance ENF arm or the switch RAL arm up to W24. We also assessed the overall incidence of LEE over the 48-week duration of the trial and baseline risk factors for grade 2 or more alanine aminotransferase (ALT) elevation using univariate and multivariate analyses.

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Introduction: In the SMART trial, baseline plasma hsCRP, IL6 and D-dimer levels were strongly correlated to all-cause mortality. A case-control study has shown an increase of IL-6 and D-dimer levels after one month of antiretroviral therapy (ART) interruption, which was correlated to viral load. Restarting ART was associated to a decrease in D-dimer but not IL-6 or hsCRP levels.

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Objectives: Efavirenz and nevirapine failure is associated with a rapid selection of resistance-associated mutations (RAMs), which may impact on etravirine or rilpivirine susceptibility. However, RAMs for rilpivirine and etravirine cannot be reported on previous resistance genotypes because these specific RAMs were not analyzed at that time. Therefore, our objective was to determine, in virologically suppressed HIV-1-infected individuals, the presence of RAMs to rilpivirine, etravirine and the combination of tenofovir/emtricitabine/rilpivirine in HIV-1 DNA from individuals previously exposed to efavirenz and/or nevirapine.

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Stored plasma specimens from 164 participants in the ANRS 138 trial were analyzed to determine interleukin 6 (IL-6), high-sensitivity C-reactive protein (hsCRP), and D-dimer levels at baseline and weeks 24 and 48. These virologically suppressed, treatment-experienced patients were randomly assigned to undergo an immediate switch (IS) or a deferred switch (DS; at week 24) from an enfuvirtide-based antiretroviral therapy (ART) regimen to a raltegravir-based regimen. At week 24, a significant decrease from baseline was observed in the IS arm, compared with the DS arm, for IL-6 level (-30% vs +10%; P < .

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