{"id":140061,"date":"2025-05-27T15:10:28","date_gmt":"2025-05-27T15:10:28","guid":{"rendered":"https:\/\/teknomers.com\/en\/could-a-blood-test-soon-enable-diagnosis-source-teknomers\/"},"modified":"2025-05-27T15:10:30","modified_gmt":"2025-05-27T15:10:30","slug":"could-a-blood-test-soon-enable-diagnosis-source-teknomers","status":"publish","type":"post","link":"https:\/\/teknomers.com\/en\/could-a-blood-test-soon-enable-diagnosis-source-teknomers\/","title":{"rendered":"Could a blood test soon enable diagnosis? Source: Teknomers"},"content":{"rendered":"\n<h1>Understanding the Groundbreaking Alzheimer&#8217;s Blood Test<\/h1>\n<p>The recent approval of a <strong>blood test for Alzheimer\u2019s disease<\/strong> marks a revolutionary step in the healthcare landscape. With this new tool, the potential for quicker and more effective patient management is now a reality. The success of this test could align with advancements in both diagnosis and treatment, changing the paradigm in which we approach dementia care.<\/p>\n<h2>The Significance of the Blood Test<\/h2>\n<p>As the most prevalent form of <strong>dementia<\/strong>, Alzheimer\u2019s affects millions of people globally. The disease progressively impairs memory and cognitive function, namely affecting individuals above the age of 75, where approximately <strong>17%<\/strong> are diagnosed. With accurate diagnosis critical for timely intervention, the new blood test is pivotal. Currently, about <strong>50%<\/strong> of patients remain incorrectly diagnosed, leading to delayed treatment and analysis.<\/p>\n<h2>How the Test Works<\/h2>\n<p>Developed by <strong>Fujirebio Diagnostics<\/strong>, the blood test measures two key proteins\u2014<strong>beta-amyloid<\/strong> and <strong>tau<\/strong>\u2014which are indicative of Alzheimer\u2019s disease. Previously, these proteins were challenging to detect in minuscule amounts during blood tests. This sensitivity is essential because <strong>beta-amyloid plaques<\/strong> have been widely recognized as a hallmark of Alzheimer\u2019s. However, a positive result doesn\u2019t guarantee a diagnosis, as symptoms must be corroborated with clinical data, including neurocognitive assessments.<\/p>\n<p>Professor <strong>Philippe Amouyel<\/strong>, director of the Alzheimer Foundation, emphasizes that the test is a <strong>diagnostic tool<\/strong> rather than a screening one. This means it is intended for patients already exhibiting symptoms. The proteins can also be present in small quantities in healthy individuals, which necessitates careful interpretation to avoid false positives.<\/p>\n<h2>Advantages of Blood Testing<\/h2>\n<p>Traditionally, Alzheimer\u2019s diagnosis entails various methods, including neuropsychological tests, <strong>MRI scans<\/strong>, and <strong>PET scans<\/strong>. Each of these diagnostic tools has its complexities and may be invasive, requiring procedures such as <strong>lumbar punctures<\/strong> to analyze cerebrospinal fluid. The newly-approved blood test simplifies this process. <\/p>\n<p>As Professor Amouyel points out, existing methods can be time-consuming and somewhat uncomfortable. The <strong>blood test<\/strong> offers a quick and less invasive avenue to diagnosis, representing a significant advancement that could reshape patient management.<\/p>\n<h2>Moving Towards Better Patient Care<\/h2>\n<p>Currently, two treatments\u2014<strong>lecanemab<\/strong> and <strong>donanemab<\/strong>\u2014have been approved for Alzheimer\u2019s, targeting plaques that contribute to cognitive decline. While these treatments offer some benefits, they do not cure the disease. The recent authorization of another treatment, <strong>Leqembi<\/strong>, aimed at an earlier stage of Alzheimer\u2019s, highlights the urgency in treating this debilitating condition.<\/p>\n<p>Early treatment is crucial as cognitive function declines rapidly with the progression of the disease. Amouyel reiterates the importance of administering care sooner, as once neurons are lost, they cannot regenerate. The blood test aids in identifying potential patients quickly, creating a pathway for timely intervention before significant impairment.<\/p>\n<h2>Target Audience for the Test<\/h2>\n<p>The blood test is intended for clinical settings, targeting individuals who already show signs of cognitive decline. As noted by Professor Amouyel, these patients experience social difficulties resulting from memory issues. In France, general practitioners can direct suspected Alzheimer&#8217;s patients to specialized <strong>memory centers<\/strong> for more comprehensive evaluation.<\/p>\n<p>This bifurcation of care ensures that patients receive proper attention and follow-up diagnostics. It establishes a streamlined approach to managing Alzheimer&#8217;s, focusing on accredited facilities that can offer extensive analysis.<\/p>\n<h2>Future Availability and Implications<\/h2>\n<p>A request for market approval has been submitted to European authorities, with responses expected in the upcoming months. If successful, the blood test could be available in France as early as next year. The approval process for testing is notably expedited compared to medications, which can take considerably longer for evaluation.<\/p>\n<p>Amouyel underscores that the assessment centers on the test&#8217;s <strong>sensitivity<\/strong> and reliability rather than a complex risk-benefit analysis like that of medications. This could lead to an accelerated pathway for implementing the test across various clinical settings.<\/p>\n<h2>Conclusion<\/h2>\n<p>In summary, the <strong>FDA&#8217;s approval<\/strong> of the Alzheimer\u2019s blood test presents new horizons in the ongoing fight against dementia. With its ability to swiftly and accurately diagnose patients, it ushers in the potential for more effective treatments at earlier stages of the disease. This advancement highlights the vital nature of embracing both innovation and collaboration within the healthcare sector to enhance patient outcomes and enrich lives.<\/p>\n<div>\n<p>Les autorit\u00e9s sanitaires am\u00e9ricaines ont autoris\u00e9 le premier test sanguin de diagnostic de la maladie d&#8217;Alzheimer, ce qui devrait permettre une prise en charge plus rapide et plus efficace des patients.<\/p>\n<p>Une \u00e9tape importante. La Food and drug administration (FDA) des \u00c9tats-Unis a donn\u00e9 mi-mai son feu vert au premier test sanguin de diagnostic de la <a href=\"https:\/\/www.bfmtv.com\/sante\/alzheimer-un-traitement-prometteur-pour-lutter-contre-la-maladie-fait-sept-morts-aux-etats-unis_AN-202504020585.html\" title=\"Alzheimer: un traitement prometteur pour lutter contre la maladie fait sept morts aux \u00c9tats-Unis\" class=\"internal_link\" rel=\"nofollow noopener\" target=\"_blank\">maladie d&#8217;Alzheimer<\/a>, une technologie prometteuse qui pourrait arriver bient\u00f4t en Europe et en France.<\/p>\n<p>La maladie d&#8217;Alzheimer est la forme la plus courante de d\u00e9mence. Elle s&#8217;aggrave avec le temps, privant progressivement les personnes atteintes de leurs souvenirs et de leur ind\u00e9pendance. 17% des personnes de plus de 75 ans en sont atteintes, selon la <a href=\"https:\/\/www.vaincrealzheimer.org\/la-maladie\/quelques-chiffres\/\" target=\"_blank\" class=\"external_link\" rel=\"nofollow noopener\">fondation Vaincre Alzheimer<\/a>. Mais si la maladie touche des centaines de milliers de patients, seulement 1 sur 2 est correctement diagnostiqu\u00e9.<\/p>\n<h2 class=\"subheading\" id=\"96aec\">\u00b7 Comment fonctionne ce test?<\/h2>\n<p>Le test, mis au point par la firme japonaise Fujirebio Diagnostics, mesure la pr\u00e9sence dans le sang de la prot\u00e9ine b\u00eata amylo\u00efde et la prot\u00e9ine tau, caract\u00e9ristiques de la maladie d&#8217;Alzheimer. En raison de leur tr\u00e8s faible quantit\u00e9, elles n&#8217;\u00e9taient jusqu&#8217;\u00e0 pr\u00e9sent que difficilement d\u00e9tectables lors d&#8217;une prise de sang.<\/p>\n<p>Attention, un test positif ne signifie pas automatiquement que la personne est atteinte de la maladie. &#8220;Il s&#8217;agit bien d&#8217;un test diagnostic et non d&#8217;un d\u00e9pistage&#8221;, pr\u00e9cise \u00e0 BFMTV.com le professeur Philippe Amouyel, directeur g\u00e9n\u00e9ral de la Fondation Alzheimer.<\/p>\n<p>Quand un d\u00e9pistage d\u00e9tecte la pr\u00e9sence d\u2019une maladie \u00e0 un stade pr\u00e9coce chez des personnes a priori en bonne sant\u00e9, le test de Fujirebio Diagnostics s&#8217;adresse \u00e0 des patients pr\u00e9sentant d\u00e9j\u00e0 des sympt\u00f4mes et doit \u00eatre confirm\u00e9 par d&#8217;autres informations cliniques, comme des test neurocognitifs.<\/p>\n<p>&#8220;Les prot\u00e9ines que l&#8217;on cherche se trouvent en grande quantit\u00e9 chez les malades d&#8217;Alzheimer, mais on les trouve \u00e9galement en petite quantit\u00e9 chez des gens qui n&#8217;ont pas de maladie d&#8217;Alzheimer. Le test \u00e9tant tellement sensible, la maladie pourrait \u00eatre d\u00e9tect\u00e9 \u00e0 tort&#8221;, poursuit le sp\u00e9cialiste.<\/p>\n<h2 class=\"subheading\" id=\"2clmr\">\u00b7 Quel est l&#8217;avantage du test sanguin?<\/h2>\n<p>Aujourd&#8217;hui, le diagnostic de la maladie d&#8217;Alzheimer peut \u00eatre pos\u00e9 \u00e0 partir de diff\u00e9rents examens: tests neuropsychologiques, IRM, tomographie par \u00e9mission de positons (ou PET scan, une imagerie qui mesure l&#8217;activit\u00e9 m\u00e9tabolique). Les m\u00e9decins peuvent aussi r\u00e9aliser une ponction lombaire qui va mesurer dans le liquide c\u00e9phalo-rachidien les prot\u00e9ines que l&#8217;on trouve en grande quantit\u00e9 dans le cerveau d&#8217;un patient atteint de la maladie d&#8217;Alzheimer.<\/p>\n<blockquote class=\"embed embed_quote\"><p><span>&#8220;Avec ces \u00e9l\u00e9ments, et en observant l&#8217;\u00e9volution des sympt\u00f4mes, on fait un diagnostic de syndrome d\u00e9mentiel. Car l&#8217;Alzheimer, c&#8217;est 60 \u00e0 70% des formes de d\u00e9mence, mais il existe d&#8217;autres formes comme la maladie \u00e0 corps de L\u00e9vy ou les d\u00e9mences fronto-temporales&#8221;, explique le professeur Philippe Amouyel.<\/span><\/p><\/blockquote>\n<p>Le probl\u00e8me de ces examens est qu&#8217;ils sont &#8220;relativement lourds, qu&#8217;ils prennent du temps et, pour la ponction lombaire, sont quand m\u00eame assez invasifs&#8221;. Le test sanguin, plus simple et plus rapide, est donc une r\u00e9elle avanc\u00e9e.<\/p>\n<h2 class=\"subheading\" id=\"8ok0h\">\u00b7 Vers une meilleure prise en charge des patients?<\/h2>\n<p>Il existe actuellement <a href=\"https:\/\/www.bfmtv.com\/sante\/une-future-therapie-contre-alzheimer-le-cnrs-avance-une-piste-prometteuse-grace-aux-dromadaires_AN-202505150274.html\" title=\"Une future th\u00e9rapie contre Alzheimer? Le CNRS avance une piste prometteuse gr\u00e2ce aux dromadaires\" class=\"internal_link\" rel=\"nofollow noopener\" target=\"_blank\">deux traitements approuv\u00e9s de l&#8217;Alzheimer<\/a>, les lecanemab et donanemab, qui ciblent la plaque amylo\u00efde et ralentissent modestement le d\u00e9clin cognitif, sans permettre une gu\u00e9rison totale.<\/p>\n<p>Un autre traitement agissant sur la premi\u00e8re phase de la maladie, le <a href=\"https:\/\/www.bfmtv.com\/sante\/alzheimer-l-agence-europeenne-du-medicament-recommande-finalement-un-traitement-pour-certains-patients_AD-202411140892.html\" title=\"Alzheimer: l&#039;agence europ\u00e9enne des m\u00e9dicaments recommande finalement un traitement pour certains patients\" class=\"internal_link\" rel=\"nofollow noopener\" target=\"_blank\">Leqembi<\/a>, vient d&#8217;\u00eatre autoris\u00e9 par les autorit\u00e9s europ\u00e9ennes mais n&#8217;est pas encore accessible en France.<\/p>\n<p>Les partisans de ces traitements, dont de nombreux neurologues, avancent qu&#8217;ils doivent \u00eatre pris plus t\u00f4t pour \u00eatre efficaces.<\/p>\n<blockquote class=\"embed embed_quote\"><p><span>&#8220;Plus on traite t\u00f4t la maladie, meilleur sera le maintien des fonctions intellectuelles. Car ce qui caract\u00e9rise l&#8217;avanc\u00e9e dans la maladie, c&#8217;est la perte des neurones, et les neurones ne repoussent pas&#8221;, souligne le professeur Philippe Amouyel.<\/span><\/p><\/blockquote>\n<p>&#8220;Le but est de donner ces traitements aux patients qui ont une r\u00e9serve cognitive suffisante pour continuer \u00e0 vivre normalement sans question de d\u00e9pendance. Donc il faut faire un test assez rapidement, ce que permet le test sanguin&#8221;, conclut-il.<\/p>\n<h2 class=\"subheading\" id=\"78o9h\">\u00b7 \u00c0 qui s&#8217;adresse le test?<\/h2>\n<p>Le test est autoris\u00e9 en milieu clinique pour les patients pr\u00e9sentant d\u00e9j\u00e0 des signes de d\u00e9clin cognitif.<\/p>\n<blockquote class=\"embed embed_quote\"><p><span>&#8220;Il s&#8217;agit de patients dont les troubles &#8211; de la m\u00e9moire, mais pas seulement &#8211; entra\u00eenent une g\u00eane sociale pour eux-m\u00eames ou leurs proches&#8221;, rappelle le professeur Philippe Amouyel.<\/span><\/p><\/blockquote>\n<p>En France, le m\u00e9decin g\u00e9n\u00e9raliste oriente les patients qu&#8217;il pense \u00eatre atteints d&#8217;Alzheimer vers des <a href=\"https:\/\/www.centres-memoire.fr\/cartographie-centres-memoire\/\" target=\"_blank\" class=\"external_link\" rel=\"nofollow noopener\">&#8220;centres m\u00e9moire&#8221;<\/a> qui r\u00e9alisent des diagnostics plus pouss\u00e9s. &#8220;C&#8217;est dans ce contexte que, dans un premier temps, le test devrait \u00eatre d\u00e9velopp\u00e9&#8221;, indique Philippe Amouyel.<\/p>\n<h2 class=\"subheading\" id=\"19bt\">\u00b7 \u00c0 quand une arriv\u00e9e en France?<\/h2>\n<p>Une demande de mise sur le march\u00e9 a \u00e9t\u00e9 d\u00e9pos\u00e9e aupr\u00e8s des autorit\u00e9s europ\u00e9ennes, et une r\u00e9ponse est attendue \u00e0 l\u2019automne. Il pourrait donc \u00eatre disponible en France d\u00e8s l\u2019ann\u00e9e prochaine.<\/p>\n<p>Le processus d&#8217;autorisation est plus rapide pour un test que pour un m\u00e9dicament, pointe Philippe Amouyel. &#8220;On ne juge pas la balance b\u00e9n\u00e9fice-risque mais la sensibilit\u00e9, la capacit\u00e9 de donner la bonne r\u00e9ponse. Donc \u00e7a devrait aller vite&#8221;.<\/p>\n<\/div>\n<p><br \/>\n<br \/><a href=\"https:\/\/teknomers.com\/category\/general\/\" rel=\"dofollow\">General News &#8211; 2<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Understanding the Groundbreaking Alzheimer&#8217;s Blood Test The recent approval of a blood test for Alzheimer\u2019s disease marks a revolutionary step in the healthcare landscape. With this new tool, the potential for quicker and more effective patient management is now a reality. The success of this test could align with advancements in both diagnosis and treatment, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":140062,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[36400],"tags":[],"class_list":["post-140061","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-health"],"_links":{"self":[{"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/posts\/140061","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/comments?post=140061"}],"version-history":[{"count":0,"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/posts\/140061\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/media\/140062"}],"wp:attachment":[{"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/media?parent=140061"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/categories?post=140061"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/tags?post=140061"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}