7 research outputs found
Ăvaluation des expositions professionnelles et environnementales chez des patients prĂ©sentant des troubles de la reproduction « Programme MATEREXPO-REPROTOXIF »
International audienceIntroductionLe programme MATEREXPO-REPROTOXIF est un programme pilote dĂ©diĂ© Ă lâĂ©valuation des expositions professionnelles ou environnementales chez des patients prĂ©sentant des troubles de la reproduction. La mise en Ă©vidence dâune exposition Ă des facteurs de risque reprotoxiques doit permettre la mise en place de mesures de prĂ©vention visant Ă optimiser les futures grossesses.MĂ©thodeCe programme a Ă©tĂ© mis en place en Ăle-de-France (IDF) au centre hospitalier intercommunal de CrĂ©teil (CHIC) et Ă lâhĂŽpital Fernand-Widal, avec le soutien de lâAnses et de lâARS IDF. Au CHIC, le programme a dĂ©butĂ© en fĂ©vrier 2018 par la prise en charge des patientes prĂ©sentant des pathologies de grossesse et des malformations congĂ©nitales chez les nouveau-nĂ©s, le versant « troubles de la fertilitĂ© » a Ă©tĂ© dĂ©veloppĂ© Ă partir de septembre 2019. Les couples prĂ©sentant lâun des critĂšres de prise en charge se voient proposer un entretien. Le recueil dâinformations est rĂ©alisĂ© par une infirmiĂšre de recherche clinique dĂ©diĂ©e. Le questionnaire, analogue Ă celui dĂ©veloppĂ© dans le cadre du programme ARTEMIS Ă Bordeaux, est expertisĂ© par un ingĂ©nieur spĂ©cialisĂ© en hygiĂšne industrielle, ce qui permet dâidentifier Ă partir des situations dâexpositions en milieu professionnel ou dans lâenvironnement gĂ©nĂ©ral, les expositions Ă des agents reprotoxiques.RĂ©sultatsSur les 15 premiers mois dâactivitĂ©, 107 patientes ont pu bĂ©nĂ©ficier dâune consultation environnementale. LâĂąge moyen des patientes Ă©tait de 32 ans.Globalement, 20 patientes (18,7 %) nâexerçaient pas dâactivitĂ© professionnelle et 87 (81,3 %) Ă©taient en activitĂ© professionnelle pendant leur grossesse. Au moins une exposition professionnelle ayant un retentissement potentiel sur la grossesse a Ă©tĂ© rapportĂ©e chez 48,3 % des patientes exerçant une activitĂ© professionnelle pendant leur grossesse.Concernant les expositions environnementales, au moins une circonstance dâexposition extraprofessionnelle ayant un retentissement potentiel sur la grossesse a Ă©tĂ© rapportĂ©e chez 102 patientes (95,3 %). Le niveau dâexposition est nĂ©anmoins considĂ©rĂ© comme Ă©tant faible chez la plupart des patientes.ConclusionLes donnĂ©es prĂ©liminaires du programme MATEREXPO-REPROTOXIF montrent frĂ©quemment des circonstances dâexposition Ă des facteurs de risque reprotoxiques dans lâenvironnement gĂ©nĂ©ral et professionnel des patientes interrogĂ©es.Il est prĂ©vu une poursuite du programme dans le cadre du consortium PREVENIR « PrĂ©vention Environnement Reproduction » dĂ©diĂ© Ă lâĂ©valuation des expositions environnementales professionnelles et extra-professionnelles chez des patients souffrant de troubles de la reproduction dans 8 centres hospitaliers sur le territoire national
Repérage des expositions professionnelles au cours des hémopathies lymphoïdes : programme Rhelypro
International audienceConclusionLe questionnaire de repĂ©rage proposĂ© paraĂźt avoir des performances (sensibilitĂ©, spĂ©cificitĂ©) satisfaisantes, incitant Ă lâutiliser dans les services dâhĂ©matologie en routine pour les cas incidents de LNH. En cas de rĂ©ponse positive, une expertise complĂ©mentaire peut ĂȘtre proposĂ©e en pathologie professionnelle dans le cadre du RĂ©seau national de vigilance et de prĂ©vention des pathologies professionnelles
Repérage des expositions professionnelles au cours des hémopathies lymphoïdes : programme Rhelypro
International audienceIntroductionLes lymphomes non hodgkiniens (LNH), les myĂ©lomes multiples (MM) et les leucĂ©mies lymphoĂŻdes chroniques (LLC), hĂ©mopathies malignes dĂ©rivĂ©es de la lignĂ©e lymphoĂŻde, sont des maladies frĂ©quentes et dont lâincidence est en augmentation. Ces affections sont possiblement en rapport avec une exposition environnementale et/ou professionnelle, avec de nombreux agents Ă©tiologiques suspectĂ©s.Le programme Rhelypro, soutenu par lâAnses, a pour but le repĂ©rage des expositions professionnelles aux cancĂ©rogĂšnes considĂ©rĂ©s comme certains ou probables aprĂšs analyse des donnĂ©es de la littĂ©rature chez tous les patients ayant un diagnostic incident de LNH, MM, LLC, Ă partir dâun questionnaire spĂ©cifique mis en place pour ce programme.MĂ©thodeIl sâagit dâune Ă©tude multicentrique incluant 7 centres de consultation de pathologies professionnelles de CrĂ©teil, Paris - F.-Widal, Bordeaux, Caen, Lille, Toulouse, de juillet 2017 Ă avril 2019. Tous les cas incidents de LNH, MM et LLC, ont bĂ©nĂ©ficiĂ© dâun questionnaire de repĂ©rage Ă©laborĂ© collectivement par les Ă©quipes de pathologies professionnelles impliquĂ©es, et permettant de lister les principales situations dâexposition aux agents cancĂ©rogĂšnes probables ou certains du Centre international de recherche sur le cancer (CIRC) pour lesquels un excĂšs de LNH, MM ou LLC a Ă©tĂ© rapportĂ©. Un questionnaire professionnel classique Ă©tait ensuite utilisĂ©, suivie dâune expertise en pathologie professionnelle. LâacceptabilitĂ© du questionnaire par les patients, le nombre de sujets faisant lâobjet dâune proposition de dĂ©claration de maladie professionnelle et lâidentification du type de secteurs dâactivitĂ©s et de postes de travail concernĂ©s pour chaque nuisance ont Ă©tĂ© Ă©valuĂ©s.RĂ©sultatsLa population dâĂ©tude est constituĂ©e de 205 patients avec un Ăąge moyen de 60 ans. Les 3 nuisances les plus souvent retenues sont les solvants organiques (hors trichloroĂ©thylĂšne, benzĂšne et dichloromĂ©thane), le benzĂšne et les pesticides. Des expositions professionnelles ont Ă©tĂ© retenues pour 21 % des sujets dâaprĂšs lâexpertise finale et ont conduit Ă proposer une demande de reconnaissance de maladie professionnelle. La sensibilitĂ© du questionnaire de repĂ©rage Ă©tait de 92 % et sa spĂ©cificitĂ© de 83 % par rapport au questionnaire de pathologie professionnelle suivi dâexpertise.ConclusionLe questionnaire de repĂ©rage proposĂ© paraĂźt avoir des performances (sensibilitĂ©, spĂ©cificitĂ©) satisfaisantes, incitant Ă lâutiliser dans les services dâhĂ©matologie en routine pour les cas incidents de LNH. En cas de rĂ©ponse positive, une expertise complĂ©mentaire peut ĂȘtre proposĂ©e en pathologie professionnelle dans le cadre du RĂ©seau national de vigilance et de prĂ©vention des pathologies professionnelles
Clés cliniques et génétiques de l'ataxie cérébelleuse causée par des expansions GAA de FGF14
International audienceSCA27B caused by FGF14 intronic heterozygous GAA expansions with at least 250 repeats accounts for 10-60% of cases with unresolved cerebellar ataxia. We aimed to assess the size and frequency of FGF14 expanded alleles in individuals with cerebellar ataxia as compared with controls and to characterize genetic and clinical variability.We sized this repeat in 1876 individuals from France sampled for research purposes in this cross-sectional study: 845 index cases with cerebellar ataxia and 324 affected relatives, 475 controls, as well as 119 cases with spastic paraplegia, and 113 with familial essential tremor.A higher frequency of expanded allele carriers in index cases with ataxia was significant only above 300 GAA repeats (10.1%, n = 85) compared with controls (1.1%, n = 5) (p < 0.0001) whereas GAA250-299 alleles were detected in 1.7% of both groups. Eight of 14 index cases with GAA250-299 repeats had other causal pathogenic variants (4/14) and/or discordance of co-segregation (5/14), arguing against GAA causality. We compared the clinical signs in 127 GAAâ„300 carriers to cases with non-expanded GAA ataxia resulting in defining a key phenotype triad: onset after 45 years, downbeat nystagmus, episodic ataxic features including diplopia; and a frequent absence of dysarthria. All maternally transmitted alleles above 100 GAA were unstable with a median expansion of +18 repeats per generation (r2 = 0.44; p < 0.0001). In comparison, paternally transmitted alleles above 100 GAA mostly decreased in size (-15 GAA (r2 = 0.63; p < 0.0001)), resulting in the transmission bias observed in SCA27B pedigrees.SCA27B diagnosis must consider both the phenotype and GAA expansion size. In carriers of GAA250-299 repeats, the absence of documented familial transmission and a presentation deviating from the key SCA27B phenotype, should prompt the search for an alternative cause. Affected fathers have a reduced risk of having affected children, which has potential implications for genetic counseling
Clés cliniques et génétiques de l'ataxie cérébelleuse causée par des expansions GAA de FGF14
International audienceSCA27B caused by FGF14 intronic heterozygous GAA expansions with at least 250 repeats accounts for 10-60% of cases with unresolved cerebellar ataxia. We aimed to assess the size and frequency of FGF14 expanded alleles in individuals with cerebellar ataxia as compared with controls and to characterize genetic and clinical variability.We sized this repeat in 1876 individuals from France sampled for research purposes in this cross-sectional study: 845 index cases with cerebellar ataxia and 324 affected relatives, 475 controls, as well as 119 cases with spastic paraplegia, and 113 with familial essential tremor.A higher frequency of expanded allele carriers in index cases with ataxia was significant only above 300 GAA repeats (10.1%, n = 85) compared with controls (1.1%, n = 5) (p < 0.0001) whereas GAA250-299 alleles were detected in 1.7% of both groups. Eight of 14 index cases with GAA250-299 repeats had other causal pathogenic variants (4/14) and/or discordance of co-segregation (5/14), arguing against GAA causality. We compared the clinical signs in 127 GAAâ„300 carriers to cases with non-expanded GAA ataxia resulting in defining a key phenotype triad: onset after 45 years, downbeat nystagmus, episodic ataxic features including diplopia; and a frequent absence of dysarthria. All maternally transmitted alleles above 100 GAA were unstable with a median expansion of +18 repeats per generation (r2 = 0.44; p < 0.0001). In comparison, paternally transmitted alleles above 100 GAA mostly decreased in size (-15 GAA (r2 = 0.63; p < 0.0001)), resulting in the transmission bias observed in SCA27B pedigrees.SCA27B diagnosis must consider both the phenotype and GAA expansion size. In carriers of GAA250-299 repeats, the absence of documented familial transmission and a presentation deviating from the key SCA27B phenotype, should prompt the search for an alternative cause. Affected fathers have a reduced risk of having affected children, which has potential implications for genetic counseling
Clinical and genetic keys to cerebellar ataxia due to FGF14 GAA expansionsResearch in context
Summary: Background: SCA27B caused by FGF14 intronic heterozygous GAA expansions with at least 250 repeats accounts for 10â60% of cases with unresolved cerebellar ataxia. We aimed to assess the size and frequency of FGF14 expanded alleles in individuals with cerebellar ataxia as compared with controls and to characterize genetic and clinical variability. Methods: We sized this repeat in 1876 individuals from France sampled for research purposes in this cross-sectional study: 845 index cases with cerebellar ataxia and 324 affected relatives, 475 controls, as well as 119 cases with spastic paraplegia, and 113 with familial essential tremor. Findings: A higher frequency of expanded allele carriers in index cases with ataxia was significant only above 300 GAA repeats (10.1%, n = 85) compared with controls (1.1%, n = 5) (p < 0.0001) whereas GAA250â299 alleles were detected in 1.7% of both groups. Eight of 14 index cases with GAA250-299 repeats had other causal pathogenic variants (4/14) and/or discordance of co-segregation (5/14), arguing against GAA causality. We compared the clinical signs in 127 GAAâ„300 carriers to cases with non-expanded GAA ataxia resulting in defining a key phenotype triad: onset after 45 years, downbeat nystagmus, episodic ataxic features including diplopia; and a frequent absence of dysarthria. All maternally transmitted alleles above 100 GAA were unstable with a median expansion of +18 repeats per generation (r2 = 0.44; p < 0.0001). In comparison, paternally transmitted alleles above 100 GAA mostly decreased in size (â15 GAA (r2 = 0.63; p < 0.0001)), resulting in the transmission bias observed in SCA27B pedigrees. Interpretation: SCA27B diagnosis must consider both the phenotype and GAA expansion size. In carriers of GAA250-299 repeats, the absence of documented familial transmission and a presentation deviating from the key SCA27B phenotype, should prompt the search for an alternative cause. Affected fathers have a reduced risk of having affected children, which has potential implications for genetic counseling. Funding: This work was supported by the Fondation pour la Recherche MĂ©dicale, grant number 13338 to JLM, the Association ConnaĂźtre les Syndrome CĂ©rĂ©belleux â France (to GS) and by the European Unionâs Horizon 2020 research and innovation program under grant agreement No 779257 (âSOLVE-RDâ to GS). DP holds a Fellowship award from the Canadian Institutes of Health Research (CIHR). SK received a grant (01GM1905C) from the Federal Ministry of Education and Research, Germany, through the TreatHSP network. This work was supported by the Australian Government National Health and Medical Research Council grants (GNT2001513 and MRFF2007677) to MB and PJL
Clés cliniques et génétiques de l'ataxie cérébelleuse causée par des expansions GAA de FGF14
International audienceSCA27B caused by FGF14 intronic heterozygous GAA expansions with at least 250 repeats accounts for 10-60% of cases with unresolved cerebellar ataxia. We aimed to assess the size and frequency of FGF14 expanded alleles in individuals with cerebellar ataxia as compared with controls and to characterize genetic and clinical variability.We sized this repeat in 1876 individuals from France sampled for research purposes in this cross-sectional study: 845 index cases with cerebellar ataxia and 324 affected relatives, 475 controls, as well as 119 cases with spastic paraplegia, and 113 with familial essential tremor.A higher frequency of expanded allele carriers in index cases with ataxia was significant only above 300 GAA repeats (10.1%, n = 85) compared with controls (1.1%, n = 5) (p < 0.0001) whereas GAA250-299 alleles were detected in 1.7% of both groups. Eight of 14 index cases with GAA250-299 repeats had other causal pathogenic variants (4/14) and/or discordance of co-segregation (5/14), arguing against GAA causality. We compared the clinical signs in 127 GAAâ„300 carriers to cases with non-expanded GAA ataxia resulting in defining a key phenotype triad: onset after 45 years, downbeat nystagmus, episodic ataxic features including diplopia; and a frequent absence of dysarthria. All maternally transmitted alleles above 100 GAA were unstable with a median expansion of +18 repeats per generation (r2 = 0.44; p < 0.0001). In comparison, paternally transmitted alleles above 100 GAA mostly decreased in size (-15 GAA (r2 = 0.63; p < 0.0001)), resulting in the transmission bias observed in SCA27B pedigrees.SCA27B diagnosis must consider both the phenotype and GAA expansion size. In carriers of GAA250-299 repeats, the absence of documented familial transmission and a presentation deviating from the key SCA27B phenotype, should prompt the search for an alternative cause. Affected fathers have a reduced risk of having affected children, which has potential implications for genetic counseling