Publications by authors named "Jean Sebastien Allain"

Studies with negative results are less likely to be published than others, potentially leading to publication bias. Introduced in 2000, trial registration could have participated in decreasing the proportion of unpublished studies. We assessed the proportion of negative randomized controlled trials (RCT) over the last 20 years.

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  • The study investigated the prevalence and characteristics of factitious disorder imposed on self (FDIS) in hospital settings in France from 2009 to 2017, including demographics and associated health issues.
  • It analyzed data from 2232 patients, revealing an average of 248 new FDIS cases annually, with 58.2% being female and a mean age of 48.5 years at diagnosis.
  • Results showed high rates of re-hospitalization and significant use of psychotropic medications, indicating that many FDIS patients struggle with additional mental health challenges.
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  • A retrospective study on polyarteritis nodosa (PAN) analyzed data from 196 patients referred to a French study group between 2005 and 2019, highlighting significant changes in the disease's landscape.
  • Main symptoms included constitutional, neurological, skin, and musculoskeletal issues, with 28% of cases being secondary PAN due to conditions like myelodysplastic syndrome and cancers; most patients (98.5%) were treated with glucocorticoids.
  • The study found high relapse rates associated with older age and specific clinical features, with mortality linked to factors like age, necrotic purpura, kidney injury, and secondary PAN, emphasizing the need for improved patient management.
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Introduction: Under-representation of women in high academic and medical positions is reported in many countries. This study aims to compare degrees and careers between men and women tenured as Full Professors of Medicine in recent years in France.

Methods: We identified all new tenured French Full Professors between 2017 and 2021 and collected the publicly available data (gender, year of birth, curriculum) from the Bibliographic Agency for Higher Education, a public institution under the aegis of the Ministry for Higher Education Research and Innovation.

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  • A new autoinflammatory syndrome called VEXAS has been identified and compared to idiopathic-relapsing polychondritis (I-RP) in terms of clinical features and outcomes.
  • Patients with VEXAS-RP tend to be older, predominantly male, and exhibit more severe symptoms, such as fever, skin and ocular issues, and pulmonary problems compared to I-RP patients.
  • VEXAS-RP is associated with a higher risk of death and more frequent refractory disease, highlighting the serious nature of this syndrome as opposed to I-RP.
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Objectives: Myelodysplastic syndromes (MDS) and chronic myelomonocytic leukaemia (CMML) are associated with systemic inflammatory and autoimmune diseases (SIADs) in 10-30% of cases. The aims of this study were (i) to evaluate the prevalence of venous thromboembolism VTE in patients presenting with both MDS/CMML and SIADs, (ii) to describe risk factors associated with thrombosis, and (iii) to analyse the impact of VTE on overall survival and transformation to acute myeloid leukaemia in comparison to patients with MDS/CMML-associated SIADs without VTE.

Methods: This retrospective multicentre case-control study was conducted among patients with MDS/CMML and dysimmune disorders and featured in the French retrospective database of the French Network of Dysimmune Disorders Associated with Hemopathies (MINHEMON), diagnosed with MDS/CMML and dysimmune disorders.

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Background: Despite cases of factitious disorder imposed on self being documented in the literature for decades, it appears to remain an under-identified and under-diagnosed problem. The present study aimed to explore factitious disorder imposed on self in a series of French patients.

Methods: Patients 18 years old and over with factitious disorder imposed on self were retrospectively included by two independent reviewers according to DSM-5 criteria in Rennes University Hospital for the period 1995 to 2019.

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Introduction: Women are under-represented in senior academic and hospital positions in many countries. The authors aim to assess the place and the evolution of all appointed female and male health practitioners' working in French public Hospitals.

Materials And Methods: Data of this observational study were collected from the National Management Centre (Centre National de Gestion) from 2015 up to January 1, 2020.

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Introduction: Our objective was to evaluate characteristics, treatment and outcome of vasculitis associated with myelodysplastic syndrome (MDS) and chronic myelomonicytic leukemia (CMML) PATIENTS AND METHODS: Retrospective descriptive analysis of MDS/CMML-related vasculitis and comparison with MDS/CMML patients without dysimmune features.

Results: Seventy patients with vasculitis and MDS/CMML were included, with median age of 71.5 [21-90] years and male/female ratio of 2.

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Rationale: 3-Methoxyphencyclidine (3-MeO-PCP) is a new psychoactive substance derived from phencyclidine. Although it can lead to severe intoxications, the main manifestations and optimal management have not been well characterized. Here, we report 2 cases of 3-MeO-PCP intoxication in the same patient, and summarize the manifestations of this intoxication reported in literature.

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