Publications by authors named "Confavreux C"

Antibodies against Ku have been described in patients with various connective tissue diseases. The objective of this study was to describe the clinical, functional, and imaging characteristics of interstitial lung disease in patients with anti-Ku antibodies. : This single-center, retrospective observational study was conducted at a tertiary referral institution.

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Background: In spite of spectacular advances in the treatment of multiple myeloma, a majority of patients will die from this disease or related complications. While a great amount of focus has been dedicated to the development of novel therapies, little attention has been paid to latter stages of patient follow-up.

Patients And Methods: In order to describe patient management during this critical period as well as the immediate causes and circumstances of death, we have analyzed a single center series of 100 patients diagnosed with myeloma who died between 2016 and 2021.

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  • The study aimed to compare the antibody response to SARS-CoV-2 in patients with inflammatory rheumatic diseases and healthy individuals.
  • Researchers screened unvaccinated patients with conditions like rheumatoid arthritis, spondyloarthritis, and psoriatic arthritis in France, and matched them with seropositive healthcare workers as controls.
  • Results showed no significant difference in antibody levels between both groups, with a trend indicating that patients with severe COVID-19 symptoms had higher antibody titres; treatments like glucocorticoids seemed linked to lower antibody responses.
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  • The study investigates mineral bone disorder in patients with chronic kidney disease after kidney transplantation, focusing on bone biomarkers and microarchitecture changes before and 6 months after the surgery.
  • A subgroup of patients aged 10 to 18 who underwent their first kidney transplant was compared to healthy controls, revealing initially higher bone densities but notable declines in trabecular microarchitecture at the radius six months post-transplant.
  • Despite some improvements in bone health, many patients persisted with metabolic issues like acidosis and elevated parathyroid hormone levels after the transplant, indicating ongoing bone metabolism concerns.
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Background: Bone metastasis is a significant concern in advanced solid tumors, contributing to diminished patient survival and quality of life due to skeletal-related events (SREs). Denosumab (DMAB), a monoclonal antibody targeting the receptor activator of nuclear factor kappa-B ligand (RANKL), is used to prevent SREs in such cases. The RANK/RANKL axis, crucial in immunological processes, has garnered attention, especially with the expanding use of immune checkpoint inhibitors (ICI) in modern oncology.

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  • - The study addresses the need for reliable methods to predict the risk of fractures in patients with femoral metastases, highlighting the limitations of current clinical tools and the potential of CT-scan-based finite element analysis for better predictions.
  • - Researchers assessed the reproducibility of a promising model developed in Belgium by comparing it to an independently reproduced model in France, confirming a strong correlation but noting the reproduced model consistently predicts higher failure loads.
  • - The evaluation of the model's application on different datasets showed decreased accuracy in predictions, while the global sensitivity analysis revealed significant factors affecting results, especially the influence of the density calibration coefficient.
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Background: Influenza vaccines are effective in decreasing hospitalizations and mortality related to influenza and its complications. However, the Vaccine Coverage Rate of influenza remains low and multifaceted efforts are required to improve it. The aim of this study was to assess the impact on influenza vaccine perception using a digital tool among outpatients and health care workers (HCWs).

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  • * Manual segmentation is often tedious and can vary between experts, prompting the use of deep learning techniques to automate the process even when data is limited.
  • * The study develops a specialized pipeline using U-Net architectures for segmenting human femurs and vertebrae, showing that automated segmentation yields results comparable to manual methods in failure load simulations, highlighting its potential effectiveness.
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The development of leadership skills has been the topic of several position statements over recent decades, and the need of medical leaders for a specific training was emphasized during the COVID-19 crisis, to enable them to adequately collaborate with governments, populations, civic society, organizations, and universities. However, differences persist as to the way such skills are taught, at which step of training, and to whom. From these observations and building on previous experience at the University of Ottawa, a team of medical professors from Lyon (France), Ottawa, and Montreal (Canada) universities decided to develop a specific medical leadership training program dedicated to faculty members taking on leadership responsibilities.

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Objectives: Identification of sarcopenia is a key issue in oncology. Several methods may be used to evaluate muscle mass in patients. Routine cancer follow-up computed tomography (CT) provides axial muscle mass whereas whole-body densitometry (DEXA) measures appendicular lean mass (ALM).

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As far as their mechanical properties are concerned, cancerous lesions can be confused with healthy surrounding tissues in elastography protocols if only the magnitude of moduli is considered. We show that the frequency dependence of the tissue's mechanical properties allows for discriminating the tumor from other tissues, obtaining a good contrast even when healthy and tumor tissues have shear moduli of comparable magnitude. We measured the shear modulus G(ω) of xenograft subcutaneous tumors developed in mice using breast human cancer cells, compared with that of fat, skin and muscle harvested from the same mice.

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(1) Background: Ipilimumab plus nivolumab (combo-ICI) improves overall survival (OS) in patients with advanced renal cell carcinoma (RCC) or melanoma. The impact of bone metastases (BM) on survival outcomes of combo-ICI-treated patients is unknown. (2) Methods: This single-center retrospective observational study involved 36 combo-ICI-treated patients with advanced RCC and 35 with melanoma.

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Objectives: The clinical value of cryoglobulinemia (CG) in systemic lupus erythematosus (SLE) is largely unknown. The aim of this retrospective study was to describe the characteristics of CG in SLE, its impact on SLE phenotype, and the features associated with cryoglobulinemic vasculitis (CryoVas) in SLE patients.

Methods: This retrospective study conducted in a French university hospital reviewed the data from 213 SLE patients having been screened for CG between January 2013 and December 2017.

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Background: To assess current practice regarding the management of rheumatoid arthritis patients among general practitioners of a French region, and their perception about the deployment of a multidisciplinary collaboration.

Methods: A cross-sectional online survey was sent to the general practitioners of a French region. The questionnaire comprised of 3 sections to collect data regarding 1/demographics, 2/practice and knowledge in rheumatoid arthritis, and 3/perception about the deployment of a multidisciplinary collaboration.

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Introduction: Vaccination is considered as a cornerstone of the management of COVID-19 pandemic. However, while vaccines provide a robust protection in immunocompetent individuals, the immunogenicity in patients with inflammatory rheumatic diseases (IRD) is not well established.

Methods: A monocentric observational study evaluated the immunogenicity of a two-dose regimen vaccine in adult patients with IRD (n=123) treated with targeted or biological therapies.

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Klinefelter Syndrome (KS) patients, defined by a 47 XXY karyotype, have increased risk of fragility fractures. We have assessed bone microarchitecture by high resolution peripheral quantitative CT (HR-pQCT) at the radius and tibia in young KS patients, naïve from testosterone replacement therapy (TRT). Areal bone mineral density (BMD) and body composition were assessed by dual X-ray absorptiometry (DXA).

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  • * Evaluating fracture risk in bones affected by metastasis is essential for ensuring patient mobility and guiding treatment decisions, such as physical activity and medication.
  • * New technologies, like personalized numerical simulations and AI, are being developed to better assess bone strength and fracture risks, aiming to enhance patient care and rehabilitation strategies.
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  • - The study aimed to evaluate the feasibility and effectiveness of pharmacist-led patient interviews upon admission to a rheumatology department, focusing on simplifying the medication reconciliation process.
  • - Conducted at a French university hospital between 2015 and 2017, the study revealed that out of 247 interviews, many uncovered new medication information and identified a significant number of medication errors.
  • - The results showed that these interviews effectively detected medication errors and led to necessary modifications in hospital medication orders, suggesting they could be a beneficial alternative to comprehensive medication reconciliation in certain cases.
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Background: Factors that may affect surgical decompression results in tarsal tunnel syndrome are not known.

Methods: A retrospective single-center study included patients who had undergone surgical tibial nerve release. The effectiveness of decompression was evaluated according to whether the patient would or would not be willing to undergo another surgical procedure in similar preoperative circumstances.

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More than 35% of lung adenocarcinoma patients have bone metastases at diagnosis and have a poor survival. Periostin, a carboxylated matrix protein, mediates lung cancer cell dissemination by promoting epithelial-mesenchymal transition, and is involved in bone response to mechanical stress and bone formation regulation. This suggests that periostin may be used as a biomarker to predict survival in lung cancer patients.

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