Publications by authors named "Betoul Schvartz"

The MTOR inhibitors have demonstrated antiviral properties, and prior non-randomized studies have suggested they may have a suppressive effect on BKPyV replication. Here, in this randomized, multicenter, controlled trial (BKEVER study), we sought to evaluate the impact of everolimus (EVR) in facilitating the clearance of BKPyV compared to simply reducing immunosuppression among kidney transplant recipients (KTRs). All together, 130 KTRs presenting with BKPyV DNAemia were randomized 1:1 into two groups.

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  • Campylobacteriosis is the leading bacterial cause of diarrhea in kidney transplant recipients (KTRs), but risk factors for this infection remain unclear.
  • A 10-year study in France identified 326 KTRs with campylobacteriosis, revealing an incidence rate of 2.3 cases per 1,000 patient-years, primarily occurring around 2.4 years after transplantation.
  • The main risk factors for developing campylobacteriosis include the use of corticosteroids, acute rejection episodes, low lymphocyte counts, and low estimated glomerular filtration rate (eGFR); treatment should prioritize azithromycin due to high resistance to fluoroquinolones.
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  • - A survey conducted by the Transplantation Commission of the SFNDT gathered responses from 232 nephrologists across France, Switzerland, and Belgium regarding the management of immunosuppressants (IS) in patients experiencing kidney transplant failure (KTF) between March and June 2023.
  • - Findings indicated that a significant number of nephrologists discontinued various IS treatments post-KTF, with 83% stopping antimetabolites, while 39.9% and 25.8% stopped calcineurin inhibitors (CNI) and corticosteroids, respectively. Some nephrologists, however, continued CNI (14%) and corticosteroids (19.1%) long-term, often influenced by patient factors like comor
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  • - Legionnaires' disease (LD) is a serious infection particularly affecting solid organ transplant recipients, though details about its impact on this group have not been well documented.
  • - A 10-year study in France identified 101 patients with LD among transplant recipients, finding that severe cases were linked to factors like negative urinary antigen tests and respiratory symptoms.
  • - Key imaging results showed significant lung involvement, and the study reported a 30-day mortality rate of 8% and a 12-month mortality rate of 20% among these patients.
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Introduction: Cytomegalovirus (CMV) is the most frequent infectious complication following solid organ transplantation. Torque teno viruses (TTV) viremia has been proposed as a biomarker of functional immunity in the management of kidney transplant recipients (KTR). The QuantiFERON-CMV (QF-CMV) is a commercially available assay that allows the assessment of CD8 T-cell responses in routine diagnostic laboratories.

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The 2022-2026 Transplantation Plan has been launched by the French government to stimulate the activities of organ harvesting and transplantation, after the failure of the previous one. It has been designed by the Biomedicine Agency in collaboration with learning societies, including the SFNDT, and patient associations. The plan is original in its objectives, its regional organization with its driving by the Regional Health Agencies, the involvement of advanced practice nurses and its funding.

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Objectives: To assess the aetiology, clinical features, diagnostic studies and outcomes of community-acquired pneumonia (CAP) in a French cohort of hospitalized kidney transplant recipients.

Methods: We performed a retrospective, multicentre study in kidney transplant recipients admitted to ten French centres for CAP from January 2016 to December 2018. CAP discharge diagnoses were clinically and radiologically validated.

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Rituximab (RTX) therapy for primary focal segmental glomerulosclerosis recurrence after kidney transplantation (KT) has been extensively debated. We aimed to assess the benefit of adding RTX to plasmapheresis (PP), corticosteroids, and calcineurin inhibitors (standard of care, SOC). We identified 148 adult patients who received KT in 12/2004-12/2018 at 21 French centers: 109 received SOC (Group 1, G1), and 39 received immediate RTX along with SOC (Group 2, G2).

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Aims: Eculizumab is an anti-C5 monoclonal antibody approved for rare diseases including atypical haemolytic-uraemic syndrome. The maintenance phase dosing regimen is identical for all adult patients: 1200 mg every 2 weeks. Recent studies reported an overexposure in many patients when considering a target trough concentration range of 50-100 mg/L.

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Background: Moderate hyperhydration is often achieved in the early post-kidney transplantation period. Whether this strategy could lead to the development of intra-abdominal hypertension (IAH) has never been assessed so far. We aimed to study the incidence of IAH after kidney transplantation and its association with graft function recovery.

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Hepatitis E virus (HEV) has been detected in rabbits, but whether rabbit HEV strains can be transmitted to humans is not known. Of 919 HEV-infected patients in France during 2015-2016, five were infected with a rabbit HEV strain. None of the patients had direct contact with rabbits, suggesting foodborne or waterborne infections.

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