{"id":10602,"date":"2025-10-14T23:35:40","date_gmt":"2025-10-14T21:35:40","guid":{"rendered":"https:\/\/rvh-synergie.org\/actualites\/une-etude-internationale-remet-en-question-les-decisions-de-traitement-basees-sur-lage-pour-la-leucemie\/"},"modified":"2025-10-14T23:35:44","modified_gmt":"2025-10-14T21:35:44","slug":"une-etude-internationale-remet-en-question-les-decisions-de-traitement-basees-sur-lage-pour-la-leucemie","status":"publish","type":"post","link":"https:\/\/rvh-synergie.org\/actualites\/une-etude-internationale-remet-en-question-les-decisions-de-traitement-basees-sur-lage-pour-la-leucemie\/","title":{"rendered":"Une \u00e9tude internationale remet en question les d\u00e9cisions de traitement bas\u00e9es sur l&rsquo;\u00e2ge pour la leuc\u00e9mie"},"content":{"rendered":"<div>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2025\/international-study-ch.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2025\/international-study-ch.jpg\" data-sub-html=\"Overall survival (OS) of patients from both cohorts divided by age intervals. &lt;b&gt;A&lt;\/b&gt; OS of all patients. &lt;b&gt;B\u2013D&lt;\/b&gt; OS of patients assigned to the 2022 ELN genetic-risk groups: &lt;b&gt;B&lt;\/b&gt; favorable, &lt;b&gt;C&lt;\/b&gt; intermediate and &lt;b&gt;D&lt;\/b&gt; adverse. Credit: &lt;i&gt;Leukemia&lt;\/i&gt; (2025). DOI: 10.1038\/s41375-025-02644-0\">\n<figure class=\"article-img\">\n<\/figure><\/div>\n<\/div>\n<p>Une \u00e9tude internationale men\u00e9e par l&rsquo;Alliance pour les essais cliniques en oncologie et le groupe coop\u00e9ratif sur la leuc\u00e9mie my\u00e9lo\u00efde aigu\u00eb r\u00e9v\u00e8le que les classifications bas\u00e9es sur l&rsquo;\u00e2ge dans le traitement de la leuc\u00e9mie my\u00e9lo\u00efde aigu\u00eb (LAM) peuvent \u00eatre d\u00e9pass\u00e9es et trop simplistes.<\/p>\n<p>La LMA est un cancer du sang et de la moelle osseuse \u00e0 croissance rapide qui touche de mani\u00e8re disproportionn\u00e9e les personnes \u00e2g\u00e9es. Historiquement, l\u2019\u00e2ge a \u00e9t\u00e9 un facteur cl\u00e9 pour d\u00e9terminer l\u2019intensit\u00e9 du traitement, l\u2019\u00e9ligibilit\u00e9 aux essais cliniques et l\u2019acc\u00e8s aux th\u00e9rapies cibl\u00e9es. Cependant, cette nouvelle recherche sugg\u00e8re que l\u2019\u00e2ge seul ne constitue pas un indicateur fiable de la biologie ou du pronostic d\u2019une maladie.<\/p>\n<p>\u00ab\u00a0Nos r\u00e9sultats soutiennent une approche plus flexible et ax\u00e9e sur la biologie du traitement de la LMA et de la conception des essais. L&rsquo;\u00e2ge seul ne devrait pas \u00eatre un gardien des th\u00e9rapies potentiellement salvatrices\u00a0\u00bb, a d\u00e9clar\u00e9 Ann-Kathrin Eisfeld, chercheuse et auteure principale de l&rsquo;Alliance, professeure agr\u00e9g\u00e9e de m\u00e9decine interne et directrice du Clara D. Bloomfield Center for Leukemia Outcomes Research \u00e0 l&rsquo;Ohio State University.<\/p>\n<p>\u00ab\u00a0Nos r\u00e9sultats sugg\u00e8rent de reconsid\u00e9rer les crit\u00e8res d&rsquo;\u00e9ligibilit\u00e9 bas\u00e9s sur l&rsquo;\u00e2ge pour les traitements. En se concentrant sur les profils mol\u00e9culaires et g\u00e9n\u00e9tiques plut\u00f4t que sur l&rsquo;\u00e2ge chronologique, les cliniciens peuvent mieux adapter les traitements \u00e0 chaque patient, am\u00e9liorant ainsi les r\u00e9sultats et \u00e9largissant l&rsquo;acc\u00e8s aux nouvelles th\u00e9rapies.\u00a0\u00bb<\/p>\n<p>Publi\u00e9 dans <i>Leuc\u00e9mie<\/i>l&rsquo;\u00e9tude a analys\u00e9 les donn\u00e9es de 2\u00a0823 patients adultes atteints de LMA trait\u00e9s dans le cadre d&rsquo;essais de premi\u00e8re ligne en grand groupe coop\u00e9ratif aux \u00c9tats-Unis (CALGB\/Alliance) et en Allemagne (AMLCG), r\u00e9v\u00e9lant des tendances nuanc\u00e9es li\u00e9es \u00e0 l&rsquo;\u00e2ge en mati\u00e8re de mutations g\u00e9n\u00e9tiques et de r\u00e9sultats de survie qui remettent en question les pratiques cliniques actuelles. Cette recherche est la premi\u00e8re \u00e9tude transcontinentale \u00e0 grande \u00e9chelle visant \u00e0 analyser les mod\u00e8les mutationnels et les r\u00e9sultats chez les patients de tous \u00e2ges atteints de LMA.<\/p>\n<p>L\u2019analyse a inclus des patients trait\u00e9s par chimioth\u00e9rapie de premi\u00e8re ligne \u00e0 base de cytarabine entre 1986 et 2017. Le profilage mol\u00e9culaire a \u00e9t\u00e9 r\u00e9alis\u00e9 \u00e0 l\u2019aide de plateformes de s\u00e9quen\u00e7age cibl\u00e9es et les r\u00e9sultats de survie ont \u00e9t\u00e9 \u00e9valu\u00e9s \u00e0 l\u2019aide de la classification du risque g\u00e9n\u00e9tique European LeukemiaNet (ELN) 2022.<\/p>\n<p>L\u2019\u00e9tude n\u2019a trouv\u00e9 aucun seuil d\u2019\u00e2ge clair qui pourrait diviser biologiquement ou pronostiquement les patients en groupes distincts. Au lieu de cela, les mutations g\u00e9n\u00e9tiques et les r\u00e9sultats de survie variaient continuellement selon l\u2019\u00e2ge. Cela remet en question la pratique de longue date consistant \u00e0 utiliser des limites d&rsquo;\u00e2ge arbitraires, telles que 60 ou 65 ans, pour guider les d\u00e9cisions de traitement.<\/p>\n<p>Les r\u00e9sultats de survie ont \u00e9galement diminu\u00e9 r\u00e9guli\u00e8rement avec l\u2019\u00e2ge, m\u00eame parmi les patients class\u00e9s comme pr\u00e9sentant un risque g\u00e9n\u00e9tique favorable. Par exemple, les patients \u00e2g\u00e9s de 18 \u00e0 24 ans atteints de LAM \u00e0 risque favorable avaient un taux de survie globale \u00e0 cinq ans de 73 %, tandis que ceux \u00e2g\u00e9s de 75 ans et plus avaient un taux de survie de seulement 21 %. Cette tendance \u00e9tait constante dans toutes les cat\u00e9gories de risque, ce qui indique que l&rsquo;\u00e2ge a un impact n\u00e9gatif sur le pronostic, quelle que soit la classification g\u00e9n\u00e9tique.<\/p>\n<p>\u00ab Cette recherche arrive \u00e0 un moment critique en oncologie, alors que la m\u00e9decine de pr\u00e9cision continue de transformer les soins contre le cancer \u00bb, a ajout\u00e9 le Dr Eisfeld. \u00ab\u00a0La plupart des options de traitement cibl\u00e9es ne sont encore disponibles que pour les patients d\u00e9passant un certain seuil d&rsquo;\u00e2ge dict\u00e9 par les crit\u00e8res d&rsquo;inclusion correspondants des essais cliniques pivots, m\u00eame si les patients en dehors de cette tranche d&rsquo;\u00e2ge pourraient \u00e9galement b\u00e9n\u00e9ficier de ces traitements souvent moins toxiques.\u00a0\u00bb<\/p>\n<p>\t\t\t\t\t\t\t\t\t\t\t\tFourni par l&rsquo;Alliance pour les essais cliniques en oncologie<\/p>\n<p>                                        <!-- print only --><\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Une \u00e9tude internationale men\u00e9e par l&rsquo;Alliance pour les essais cliniques en oncologie et le groupe<\/p>\n","protected":false},"author":1,"featured_media":10603,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[7115,1536,48,3207,2316,49,2678,8,2450,2449,112,261,47],"class_list":["post-10602","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-les-maladies","tag-basees","tag-decisions","tag-etude","tag-internationale","tag-lage","tag-les","tag-leucemie","tag-pour","tag-question","tag-remet","tag-sur","tag-traitement","tag-une","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50","resize-featured-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.4 - 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