Publications by authors named "Lemonnier F"

Lymphomas of T-follicular helper origin (T-follicular helper-cell lymphoma [TFHL]) are often accompanied by an expansion of B-immunoblasts, occasionally with Hodgkin/Reed-Sternberg-like (HRS-like) cells, making the differential diagnosis with classic Hodgkin lymphoma (CHL) difficult. We compared the morphologic, immunophenotypic, and molecular features of 15 TFHL and 12 CHL samples and discussed 4 challenging cases of uncertain diagnosis. Compared with CHL, TFHL disclosed more frequent sparing of subcortical sinuses, high-endothelium venule proliferation, dendritic cell meshwork expansion, T-cell atypia, and aberrant T-cell immunophenotype.

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Eplet 52SK is unique in the HLA eplet registry as targeting the whole family of DQA1*01 alleles. It is proposed as an antibody-verified eplet but has not been validated enough to deserve this label. Especially, confusion can occur with reactivity targeting the 52PQ eplet which is present on the DQB1*05 and DQB1*06 alleles families, as DQ molecule stability imposes DQA1*01 to selectively associate with these DQ-β families only.

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  • A new community of heads of haematology departments has been formed to provide mutual support in response to challenges within the French hospital system.
  • An inaugural seminar held in January 2023 laid the groundwork for this initiative, fostering connections and collaboration among participants.
  • The community expanded in January 2024, involving a wider group of department heads, enhancing teamwork and resource-sharing to improve hospital management and operations.
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Susceptibility of delafloxacin on 199 osteoarticular levofloxacin-resistant staphylococci strains was reported in 49% and 1% using SSTI S. aureus breakpoint (0.25 mg/L) and general S.

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Tafasitamab plus lenalidomide (TAFA-LEN) treatment relevance pre- or post-anti-CD19 chimeric antigen receptor (CAR) T-cell therapy is debated. We analyzed patients with large B-cell lymphoma in the DESCAR-T registry treated with axi[1]cel or tisa-cel in ≥3rd line and TAFA-LEN before (n = 15, "TL-pre-CAR-T" set) or directly after (n = 52, "TL-post-CAR-T" set) CAR T-cell therapy. We compared TAFA-LEN v.

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To develop health promotion (HP) in sports clubs (SCs), stakeholders need to know the HP expectations of sports participants. However, the literature does not provide information on these aspects, which exacerbates the difficulty for SCs to provide an environment, activities and organization that promote health and to play the role entrusted to them in the integration of vulnerable populations. To fill this gap, this study explores the HP expectations and perceptions of sports participants, with a particular focus on ethnocultural characteristics, and documents participants' understanding of HP.

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  • * Among 976 CA patients, the prevalence of AS was notably higher in those with wild type transthyretin amyloid (ATTRwt) at 26%, compared to 8% in hereditary variant transthyretin amyloid (ATTRv) and 5% in immunoglobulin light-chain (AL) CA.
  • * Despite ATTRwt patients having a higher prevalence of AS than hospital controls, moderate or greater AS did not significantly impact overall mortality risk in this group.
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Cancer metabolic reprogramming has been recognized as one of the cancer hallmarks that promote cell proliferation, survival, as well as therapeutic resistance. Up-to-date regulation of metabolism in T-cell lymphoma is poorly understood. In particular, for human angioimmunoblastic T-cell lymphoma (AITL) the metabolic profile is not known.

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  • Follicular helper T-cell lymphomas (TFHL) often have gene alterations affecting DNA methylation, and preliminary studies indicate that 5-azacitidine may be effective for patients with relapsed TFHL.
  • This study compared the oral azacitidine treatment to typical therapies (like gemcitabine and bendamustine) in patients over 18 with relapsed or refractory TFHL across five European countries and Japan.
  • The trial enrolled 86 patients, showing that those treated with azacitidine had a median progression-free survival of 5.6 months, significantly longer compared to 2.8 months for those receiving standard therapy.
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Objectives: Daratumumab-treated myeloma patients may face increased seasonal influenza risk due to weakened postvaccination immune responses, especially with daratumumab treatment. We aimed to assess humoral responses to boosted influenza vaccination in daratumumab-treated or -untreated patients.

Methods: In a single-center study, we evaluated humoral responses (hemagglutination-inhibition assay) one month following a two-injection (4-weeks apart) influenza vaccination (standard dose) in 84 patients with multiple myeloma (40 with daratumumab in the past year).

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Extranodal NK/T-cell lymphoma (ENKTCL) is an Epstein-Barr virus (EBV)-related neoplasm with male dominance and a poor prognosis. A better understanding of the genetic alterations and their functional roles in ENKTCL could help improve patient stratification and treatments. In this study, we performed a comprehensive genetic analysis of 178 ENKTCL cases to delineate the landscape of mutations, copy number alterations (CNA), and structural variations, identifying 34 driver genes including six previously unappreciated ones, namely, HLA-B, HLA-C, ROBO1, CD58, POT1, and MAP2K1.

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In transplantation, anti-HLA Abs, especially targeting the DQ locus, are well-known to lead to rejection. These Abs identified by Luminex single Ag assays recognize polymorphic amino acids on HLA, named eplets. The HLA Eplet Registry included 83 DQ eplets, mainly deduced from amino acid sequence alignments, among which 66 have not been experimentally verified.

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Sports clubs (SCs) are an ideal setting for promoting health. However existing health promotion (HP) interventions in SCs mainly target a single health behavior and men who do sports, and evaluations of such interventions provides little information about their deployment. To overcome these limitations, the PROSCeSS intervention was co-constructed based on the theoretical model of the health-promoting SC and multi-level, multi-determinant health strategies.

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  • Angioimmunoblastic T-cell lymphoma (AITL) is a challenging cancer linked to CD4 follicular helper T cells, which have poorly understood metabolic needs, prompting the search for targeted treatments.
  • Researchers conducted metabolomic and proteomic analyses on murine models of AITL and confirmed findings with human patient data, revealing that AITL Tfh cells heavily rely on the choline lipid pathway for their survival.
  • Targeted treatments using a fatty acid oxidation inhibitor showed increased survival in mice and significant reduction of malignant Tfh cells, suggesting that choline metabolism presents a new therapeutic target for AITL.
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Introduction: Follicular helper T-cell lymphomas (TFHL) have an aggressive course with a poor outcome. European and US guidelines recommend anthracycline-based chemotherapy as a first-line treatment, but the 5-year overall survival rate is still approximately 30%. We describe here the features of a cohort of TFHL patients who experienced prolonged survival despite the absence of specific treatment or the initiation of steroid-based therapy.

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Aims: Follicular helper T-cell (TFH) lymphoma of the angioimmunoblastic-type (AITL), one of the most prevalent T-cell lymphomas, typically encompasses proliferation of high endothelial venules and Epstein-Barr virus-positive immunoblasts, but neither infection with HHV8 nor association with Kaposi's sarcoma (KS) have been described. The aims of this study are to characterise the association between AITL and HHV8 infection or KS.

Methods And Results: Three male patients aged 49-76 years, HIV-negative, with concurrent nodal involvement by AITL and KS, were identified from our files and carefully studied.

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The application of the settings-based approach to sports clubs requires a context-specific framework to develop and operationalize health promotion interventions. Incorporating top-down and bottom-up perspectives into interventions increases their efficiency, success and sustainability. In 2020, the health promoting sports club (HPSC) model and intervention framework were created, including strategies and intervention components.

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Axicabtagene ciloleucel (axi-cel) demonstrated superior efficacy compared to standard of care as second-line therapy in patients with high-risk relapsed/refractory (R/R) large B cell lymphoma (LBCL) considered eligible for autologous stem cell transplantation (ASCT); however, in clinical practice, roughly half of patients with R/R LBCL are deemed unsuitable candidates for ASCT. The efficacy of axi-cel remains to be ascertained in transplant-ineligible patients. ALYCANTE, an open-label, phase 2 study, evaluated axi-cel as a second-line therapy in 62 patients with R/R LBCL who were considered ineligible for ASCT.

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Article Synopsis
  • The French hospital system is facing a crisis due to staff shortages, prompting department heads to seek collaborative solutions for maintaining patient care.
  • A two-day seminar was held for fourteen hematology department heads, focusing on sharing experiences and fostering a community aimed at improving their hospitals.
  • The participants expressed interest in expanding collaboration through regular seminars for department heads across various specialties, aligning with public service strategies to strengthen hospital departments and inspire broader change in the health system.
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Acquisition of health promotion (HP) skills and knowledge is essential for interventions development in this field. In sports clubs (SC), little HP training exists even though it was requested by SC actors. In response, the PROSCeSS (PROmotion de la Santé au sein du Clubs SportifS) MOOC (Massive Open Online Course) was developed to support actors of HP in the SC in the development of HP interventions.

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Peripheral T-cell lymphomas (PTCL) comprised more than 30 rare heterogeneous entities, representing 10 to 15% of adult non-Hodgkin lymphomas. Although their diagnosis is still mainly based on clinical, pathological, and phenotypic features, molecular studies have allowed for a better understanding of the oncogenic mechanisms involved and the refinement of many PTCL entities in the recently updated classifications. The prognosis remains poor for most entities (5-year overall survival < 30%), with current conventional therapies based on anthracyclin-based polychemotherapy regimen, despite many years of clinical trials.

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