{"id":6608,"date":"2025-05-18T22:56:19","date_gmt":"2025-05-18T20:56:19","guid":{"rendered":"https:\/\/rvh-synergie.org\/actualites\/les-tests-prenatals-non-invasifs-identifient-deux-fois-plus-de-cas-du-syndrome-de-down-que-le-depistage-serique-du-deuxieme-trimestre\/"},"modified":"2025-05-18T22:56:19","modified_gmt":"2025-05-18T20:56:19","slug":"les-tests-prenatals-non-invasifs-identifient-deux-fois-plus-de-cas-du-syndrome-de-down-que-le-depistage-serique-du-deuxieme-trimestre","status":"publish","type":"post","link":"https:\/\/rvh-synergie.org\/actualites\/les-tests-prenatals-non-invasifs-identifient-deux-fois-plus-de-cas-du-syndrome-de-down-que-le-depistage-serique-du-deuxieme-trimestre\/","title":{"rendered":"Les tests pr\u00e9natals non invasifs identifient deux fois plus de cas du syndrome de Down que le d\u00e9pistage s\u00e9rique du deuxi\u00e8me trimestre"},"content":{"rendered":"
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Une nouvelle \u00e9tude a analys\u00e9 la rentabilit\u00e9 des diff\u00e9rentes strat\u00e9gies de d\u00e9pistage du syndrome des bas (DS). Le r\u00e9sultat confirme que les tests pr\u00e9natals non invasifs (NIPT) surpassent le d\u00e9pistage s\u00e9rique du deuxi\u00e8me trimestre (STSS) en mati\u00e8re de pr\u00e9cision et de rentabilit\u00e9, car le NIPT identifie deux fois plus de cas DS que STSS.<\/p>\n

L’\u00e9tude a \u00e9t\u00e9 men\u00e9e par des chercheurs de l’h\u00f4pital Changsha pour les soins maternels et infantiles, l’\u00e9cole d’administration publique, l’Universit\u00e9 du Hunan en Chine et la g\u00e9nomique BGI. L’article a \u00e9t\u00e9 publi\u00e9 dans la revue Fronti\u00e8res en sant\u00e9 publique<\/i> au d\u00e9but de ce mois.<\/p>\n

Dirig\u00e9e \u00e0 grande \u00e9chelle, impliquant 140 472 femmes enceintes de mars 2018 \u00e0 d\u00e9cembre 2020, cette analyse du monde r\u00e9el \u00e9value les performances du NIPT par rapport aux STS traditionnels. Les chercheurs visaient \u00e0 \u00e9valuer quelle strat\u00e9gie de d\u00e9pistage offrirait le meilleur \u00e9quilibre entre l’efficacit\u00e9 et le co\u00fbt, garantissant que les soins pr\u00e9natals peuvent \u00eatre \u00e0 la fois avanc\u00e9s et accessibles.<\/p>\n

La cl\u00e9 de l’\u00e9tude a \u00e9t\u00e9 son examen de la sensibilit\u00e9, de la sp\u00e9cificit\u00e9 et de la valeur pr\u00e9dictive positive du NIPT dans la d\u00e9tection de la trisomie 21 – l’un des indicateurs cl\u00e9s de DS. Le NIPT a montr\u00e9 une sensibilit\u00e9 et une sp\u00e9cificit\u00e9 significativement plus \u00e9lev\u00e9es par rapport \u00e0 STSS, et NIPT identifie deux fois plus de cas de DS que STSS, ce qui en fait une option beaucoup plus fiable.<\/p>\n

La strat\u00e9gie universelle de d\u00e9pistage du NIPT, qui implique d’offrir le NIPT \u00e0 toutes les femmes enceintes, s’est av\u00e9r\u00e9e \u00eatre la plus efficace pour d\u00e9tecter les cas de DS, avec un avantage net d\u00e9passant de loin celui de STSS. Non seulement NIPT a d\u00e9tect\u00e9 plus de cas, mais il l’a fait \u00e0 un co\u00fbt progressif plus faible, ce qui l’a \u00e9tabli comme un concurrent solide pour une mise en \u0153uvre g\u00e9n\u00e9ralis\u00e9e.<\/p>\n

NIPT comme m\u00e9thode de d\u00e9pistage de premier niveau pour DS<\/h2>\n

Dans cette \u00e9tude, le NIPT a pr\u00e9sent\u00e9 une sensibilit\u00e9, une sp\u00e9cificit\u00e9 et une valeur pr\u00e9dictive positifs significativement plus \u00e9lev\u00e9es par rapport \u00e0 STSS pour DS. Le NIPT a \u00e9galement d\u00e9montr\u00e9 des taux de faux positifs et de faux n\u00e9gatifs plus bas. Dans tous les groupes d’\u00e2ge des femmes enceintes, le NIPT a syst\u00e9matiquement maintenu une excellente sensibilit\u00e9 et sp\u00e9cificit\u00e9, surpassant STSS dans toutes les mesures de d\u00e9tection.<\/p>\n

Le NIPT a effectivement r\u00e9duit la n\u00e9cessit\u00e9 de proc\u00e9dures diagnostiques pr\u00e9natales invasives, optimisant ainsi l’utilisation des ressources et minimisant les risques associ\u00e9s aux techniques invasives. Compte tenu de ses performances de d\u00e9tection sup\u00e9rieures, les chercheurs ont sugg\u00e9r\u00e9 que le NIPT devrait \u00eatre consid\u00e9r\u00e9 comme une m\u00e9thode de d\u00e9pistage de premier niveau pour le syndrome de Down.<\/p>\n

L’analyse a r\u00e9v\u00e9l\u00e9 que le d\u00e9pistage universel du NIPT a conduit \u00e0 la d\u00e9tection de 163 cas DS avec un rapport de rentabilit\u00e9 de RMB 1: 9,53. En comparaison, une strat\u00e9gie combin\u00e9e STSS et NIPT a d\u00e9tect\u00e9 moins de cas, mais \u00e0 un co\u00fbt plus \u00e9lev\u00e9. L’approche universelle offre une solution accessible mais tr\u00e8s efficace pour le d\u00e9pistage pr\u00e9natal.<\/p>\n

Cette \u00e9tude prouve que le NIPT a des performances de test sup\u00e9rieures par rapport \u00e0 STSS, signalant une \u00e9tape significative vers de meilleurs soins pr\u00e9natals. Il fournit une preuve claire que le NIPT am\u00e9liore non seulement la pr\u00e9cision du d\u00e9pistage du syndrome de Down, mais offre \u00e9galement des \u00e9conomies de co\u00fbts substantielles, ce qui en fait une option possible pour une adoption g\u00e9n\u00e9ralis\u00e9e.<\/p>\n

\t\t\t\t\t\t\t\t\t\t\t\tFourni par BGI Genomics<\/p>\n

<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

Une nouvelle \u00e9tude a analys\u00e9 la rentabilit\u00e9 des diff\u00e9rentes strat\u00e9gies de d\u00e9pistage du syndrome des<\/p>\n","protected":false},"author":1,"featured_media":6609,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[344,1002,273,953,195,649,5352,49,5351,817,283,72,5313],"class_list":["post-6608","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-les-maladies","tag-cas","tag-depistage","tag-deux","tag-deuxieme","tag-fois","tag-identifient","tag-invasifs","tag-les","tag-prenatals","tag-serique","tag-syndrome","tag-tests","tag-trimestre","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50","resize-featured-image"],"yoast_head":"\nLes tests pr\u00e9natals non invasifs identifient deux fois plus de cas du syndrome de Down que le d\u00e9pistage s\u00e9rique du deuxi\u00e8me trimestre - RVH-Synergie.org<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/rvh-synergie.org\/actualites\/les-tests-prenatals-non-invasifs-identifient-deux-fois-plus-de-cas-du-syndrome-de-down-que-le-depistage-serique-du-deuxieme-trimestre\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Les tests pr\u00e9natals non invasifs identifient deux fois plus de cas du syndrome de Down que le d\u00e9pistage s\u00e9rique du deuxi\u00e8me trimestre - 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