{"id":4779,"date":"2023-08-28T19:26:58","date_gmt":"2023-08-28T19:26:58","guid":{"rendered":"https:\/\/dailyai.com\/?p=4779"},"modified":"2023-08-28T22:45:53","modified_gmt":"2023-08-28T22:45:53","slug":"stanford-scientists-develop-ai-model-for-predicting-glioblastoma-outcomes","status":"publish","type":"post","link":"https:\/\/dailyai.com\/fr\/2023\/08\/stanford-scientists-develop-ai-model-for-predicting-glioblastoma-outcomes\/","title":{"rendered":"Des scientifiques de Stanford d\u00e9veloppent un mod\u00e8le d'IA pour pr\u00e9dire les r\u00e9sultats du glioblastome"},"content":{"rendered":"<p><b>Des chercheurs de Stanford Medicine ont mis au point un mod\u00e8le d'IA destin\u00e9 \u00e0 am\u00e9liorer le diagnostic et le traitement du glioblastome, une forme particuli\u00e8rement agressive de cancer du cerveau.\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Le glioblastome pr\u00e9sente des d\u00e9fis uniques pour les professionnels de la sant\u00e9 en raison de sa composition cellulaire tr\u00e8s variable d'un patient \u00e0 l'autre.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Olivier Gevaert, professeur agr\u00e9g\u00e9 d'informatique biom\u00e9dicale et de science des donn\u00e9es, a soulign\u00e9 la complexit\u00e9 du traitement du glioblastome, d\u00e9clarant : \"En raison de l'h\u00e9t\u00e9rog\u00e9n\u00e9it\u00e9 de cette maladie, les scientifiques n'ont pas trouv\u00e9 de bons moyens de s'y attaquer.\"<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Les <\/span><a href=\"https:\/\/med.stanford.edu\/news\/all-news\/2023\/08\/ai-brain-cancer-glioblastoma.html\"><span style=\"font-weight: 400;\">Mod\u00e8le d'IA<\/span><\/a><span style=\"font-weight: 400;\"> vise \u00e0 att\u00e9nuer ce probl\u00e8me en analysant des images color\u00e9es de tissus de glioblastome afin d'en \u00e9valuer les caract\u00e9ristiques, notamment l'agressivit\u00e9 et la composition g\u00e9n\u00e9tique de la tumeur.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Yuanning Zheng, du laboratoire de Gevaert, <\/span><a href=\"https:\/\/www.nature.com\/articles\/s41467-023-39933-0\"><span style=\"font-weight: 400;\">d\u00e9crite<\/span><\/a><span style=\"font-weight: 400;\"> le syst\u00e8me d'IA comme \"une sorte de syst\u00e8me d'aide \u00e0 la d\u00e9cision pour les m\u00e9decins\".\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Le mod\u00e8le pourrait aider les cliniciens \u00e0 identifier les patients pr\u00e9sentant des caract\u00e9ristiques cellulaires indiquant des tumeurs plus agressives, en les signalant pour un suivi rapide. Il c<\/span><span style=\"font-weight: 400;\">Le projet permet de dresser une carte plus d\u00e9taill\u00e9e de la tumeur, r\u00e9v\u00e9lant les interactions entre les cellules et leur corr\u00e9lation avec l'\u00e9volution de l'\u00e9tat de sant\u00e9 du patient.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Gevaert pr\u00e9cise : \"Le mod\u00e8le a montr\u00e9 quelles cellules aiment \u00eatre ensemble, quelles cellules ne veulent pas communiquer et comment cela est corr\u00e9l\u00e9 avec les r\u00e9sultats pour le patient\".\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Par exemple, le mod\u00e8le a r\u00e9v\u00e9l\u00e9 que le regroupement de cellules sp\u00e9cifiques, connues sous le nom d'astrocytes, indiquait une forme plus agressive du cancer. Ces informations pourraient aider \u00e0 concevoir des traitements plus efficaces pour le glioblastome.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Zheng esp\u00e8re que le mod\u00e8le pourra \u00e9galement servir d'outil d'\u00e9valuation post-op\u00e9ratoire. Le mod\u00e8le a montr\u00e9 que les cellules tumorales pr\u00e9sentant des signes de privation d'oxyg\u00e8ne sont souvent en corr\u00e9lation avec de plus mauvais r\u00e9sultats en mati\u00e8re de cancer.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\"En \u00e9clairant les cellules priv\u00e9es d'oxyg\u00e8ne dans les \u00e9chantillons chirurgicaux color\u00e9s par histologie, le mod\u00e8le peut aider les chirurgiens \u00e0 comprendre combien de cellules canc\u00e9reuses peuvent rester dans le cerveau et \u00e0 quel moment reprendre le traitement apr\u00e8s l'op\u00e9ration\", a d\u00e9clar\u00e9 M. Zheng.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"> Bien qu'il soit encore en phase de recherche, le mod\u00e8le pourrait \u00eatre appliqu\u00e9 \u00e0 d'autres cancers, tels que le cancer du sein ou du poumon.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"> Zheng conclut : \"Je pense que ces int\u00e9grations de donn\u00e9es multimodales peuvent fa\u00e7onner l'am\u00e9lioration de la m\u00e9decine personnalis\u00e9e \u00e0 l'avenir.\"<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Actuellement, une version de d\u00e9monstration de leur mod\u00e8le, appel\u00e9e GBM360, est mise \u00e0 la disposition des chercheurs pour qu'ils testent et t\u00e9l\u00e9chargent des images diagnostiques afin de pr\u00e9dire les r\u00e9sultats pour les patients atteints de glioblastome. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Toutefois, M. Zheng s'est empress\u00e9 d'ajouter que le mod\u00e8le en est encore au stade de la recherche et qu'il n'est pas utilis\u00e9 dans des contextes cliniques r\u00e9els.\u00a0<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">En savoir plus sur l'\u00e9tude<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">L'\u00e9tude utilise l'IA pour interpr\u00e9ter les sous-types de glioblastome \u00e0 partir des donn\u00e9es existantes sur les patients, aidant ainsi les cliniciens \u00e0 d\u00e9terminer le pronostic et l'\u00e9volution de la maladie pour diff\u00e9rents patients.\u00a0<\/span><\/p>\n<p>Voici comment cela fonctionne :<\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>Int\u00e9gration des donn\u00e9es<\/strong>: Les chercheurs ont commenc\u00e9 par int\u00e9grer de multiples formes de donn\u00e9es, y compris le s\u00e9quen\u00e7age de l'ARN d'une seule cellule et la transcriptomique spatiale, aux c\u00f4t\u00e9s des r\u00e9sultats cliniques des patients atteints de glioblastome. Ils ont ainsi obtenu un ensemble de donn\u00e9es solide pour d\u00e9velopper des mod\u00e8les d'apprentissage automatique.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>D\u00e9veloppement de mod\u00e8les<\/strong>: L'\u00e9quipe a d\u00e9velopp\u00e9 GBM-CNN, un mod\u00e8le d'apprentissage profond sp\u00e9cialis\u00e9 con\u00e7u pour interpr\u00e9ter les images histologiques. Ce mod\u00e8le a \u00e9t\u00e9 entra\u00een\u00e9 \u00e0 pr\u00e9dire les diff\u00e9rents sous-types transcriptionnels des cellules de glioblastome, en utilisant les donn\u00e9es int\u00e9gr\u00e9es pour la validation.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>Analyse \u00e0 grande \u00e9chelle<\/strong>: Apr\u00e8s entra\u00eenement, le GBM-CNN a \u00e9t\u00e9 utilis\u00e9 pour analyser plus de 40 millions de taches tissulaires provenant de 410 patients, cr\u00e9ant ainsi des cartes cellulaires \u00e0 haute r\u00e9solution. L'analyse a r\u00e9v\u00e9l\u00e9 la pr\u00e9sence de trois \u00e0 cinq sous-types malins dans chaque tumeur.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>Corr\u00e9lation avec les donn\u00e9es cliniques<\/strong>: Les cartes cellulaires ont ensuite \u00e9t\u00e9 int\u00e9gr\u00e9es aux donn\u00e9es cliniques des patients. Il s'est av\u00e9r\u00e9 que certaines compositions cellulaires sont li\u00e9es \u00e0 de moins bons r\u00e9sultats pour les patients.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>Validation et essais<\/strong>: Pour corroborer ces r\u00e9sultats, un mod\u00e8le secondaire a \u00e9t\u00e9 d\u00e9velopp\u00e9 pour pr\u00e9dire le pronostic des patients sur la base d'autres images diagnostiques. Ce mod\u00e8le a confirm\u00e9 les r\u00e9sultats initiaux, montrant des associations entre l'architecture cellulaire et les taux de survie des patients.<\/span><\/li>\n<\/ol>\n<p>L'IA acc\u00e9l\u00e8re consid\u00e9rablement les approches fond\u00e9es sur les donn\u00e9es dans le domaine des soins de sant\u00e9, en soutenant <a href=\"https:\/\/dailyai.com\/fr\/2023\/06\/ezra-receives-fda-clearance-for-ai-powered-mri-scanner\/\">IRM,<\/a> <a href=\"https:\/\/dailyai.com\/fr\/2023\/06\/ezra-receives-fda-clearance-for-ai-powered-mri-scanner\/\">diagnostic des maladies oculaires<\/a>et sophistiqu\u00e9s <a href=\"https:\/\/dailyai.com\/fr\/2023\/08\/ai-mind-reading-medical-breakthrough-or-step-towards-dystopia\/\">interfaces cerveau-ordinateur<\/a>pour ne citer que quelques-unes de ses innombrables applications.<\/p>","protected":false},"excerpt":{"rendered":"<p>Des chercheurs de Stanford Medicine ont mis au point un mod\u00e8le d'IA destin\u00e9 \u00e0 am\u00e9liorer le diagnostic et le traitement du glioblastome, une forme particuli\u00e8rement agressive de cancer du cerveau.  Le glioblastome pr\u00e9sente des d\u00e9fis uniques pour les professionnels de la sant\u00e9 en raison de sa composition cellulaire tr\u00e8s variable d'un patient \u00e0 l'autre. Olivier Gevaert, professeur agr\u00e9g\u00e9 d'informatique biom\u00e9dicale et de science des donn\u00e9es, a soulign\u00e9 la complexit\u00e9 du traitement du glioblastome en d\u00e9clarant : \"En raison de l'h\u00e9t\u00e9rog\u00e9n\u00e9it\u00e9 de cette maladie, les scientifiques n'ont pas trouv\u00e9 de bons moyens de s'y attaquer.\" Le mod\u00e8le d'IA vise \u00e0 att\u00e9nuer ce probl\u00e8me en analysant des images color\u00e9es de tissus de glioblastome afin d'\u00e9valuer leurs caract\u00e9ristiques, notamment l'agressivit\u00e9 et la g\u00e9n\u00e9tique de la tumeur.<\/p>","protected":false},"author":2,"featured_media":4780,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[84],"tags":[203,274,204,105,101],"class_list":["post-4779","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-biotech","tag-cancer","tag-healthcare","tag-machine-learning","tag-medtech"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Stanford scientists develop AI model for predicting glioblastoma outcomes | DailyAI<\/title>\n<meta name=\"description\" content=\"Researchers from Stanford Medicine have developed an AI model designed to improve the diagnosis and treatment of glioblastoma, a particularly aggressive form of brain cancer.\u00a0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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