{"id":37839,"date":"2026-10-26T08:10:04","date_gmt":"2026-10-26T13:10:04","guid":{"rendered":"https:\/\/myeloma.ca\/?p=37839"},"modified":"2026-10-26T08:13:25","modified_gmt":"2026-10-26T13:13:25","slug":"definir-la-guerison-du-myelome-multiple","status":"publish","type":"post","link":"https:\/\/myeloma.ca\/fr\/2026\/10\/26\/definir-la-guerison-du-myelome-multiple\/","title":{"rendered":"D\u00e9finir la gu\u00e9rison du my\u00e9lome multiple"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Depuis sa premi\u00e8re description en 1844, le my\u00e9lome multiple est g\u00e9n\u00e9ralement consid\u00e9r\u00e9 comme une maladie incurable. Aujourd\u2019hui, pour la premi\u00e8re fois, l\u2019<em>International Myeloma Society<\/em> (IMS) et l\u2019<em>International Myeloma Working Group<\/em> (IMWG) proposent une d\u00e9finition consensuelle de ce que signifie la gu\u00e9rison du my\u00e9lome. Le Dr Nikhil Munshi a pr\u00e9sent\u00e9 cette d\u00e9finition le 23 septembre 2026, lors du congr\u00e8s annuel de l\u2019IMS \u00e0 Glasgow : une r\u00e9mission durable, sans traitement, si profonde et prolong\u00e9e que le my\u00e9lome ne peut plus \u00eatre d\u00e9tect\u00e9, m\u00eame \u00e0 l\u2019aide de tests \u00e0 haute sensibilit\u00e9. Cette d\u00e9finition repose essentiellement sur des crit\u00e8res cliniques et ne refl\u00e8te pas n\u00e9cessairement le v\u00e9cu des patients, mais elle ouvre des perspectives encourageantes pour l\u2019avenir des soins du my\u00e9lome.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pourquoi d\u00e9finir la gu\u00e9rison maintenant?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Cette question suscite un int\u00e9r\u00eat croissant dans le milieu de la recherche en raison de l\u2019am\u00e9lioration constante de la survie au cours des vingt derni\u00e8res ann\u00e9es. Au Canada, la survie nette \u00e0 cinq ans des personnes atteintes d\u2019un my\u00e9lome est pass\u00e9e de 27 % chez celles ayant re\u00e7u un diagnostic entre 1992 et 1994 \u00e0 54 % chez celles ayant re\u00e7u un diagnostic entre 2019 et 2021\u00b9. Les r\u00e9ponses aux traitements sont \u00e9galement devenues plus profondes et durent plus longtemps. L\u2019\u00e9tude CARTITUDE-1 en est un bon exemple : parmi les 97 patients ayant d\u00e9j\u00e0 re\u00e7u de nombreux traitements, 32 \u00e9taient toujours en vie et ne pr\u00e9sentaient aucune progression de la maladie au moins cinq ans apr\u00e8s avoir re\u00e7u une seule perfusion de cilta-cel, une th\u00e9rapie cellulaire CAR-T, sans traitement d\u2019entretien <sup>2,3<\/sup>. Un autre exemple est l\u2019\u00e9tude CARTITUDE-2, cohorte A, qui a \u00e9valu\u00e9 le cilta-cel \u00e0 un stade plus pr\u00e9coce du parcours th\u00e9rapeutique, apr\u00e8s une \u00e0 trois lignes de traitement. Dans cette \u00e9tude, 10 des 20 patients \u00e9taient toujours en vie et ne pr\u00e9sentaient aucune progression de la maladie apr\u00e8s au moins cinq ans, sans avoir re\u00e7u d\u2019autre traitement contre le my\u00e9lome\u2074. Comme l\u2019a soulign\u00e9 le Dr Munshi, \u00ab la profondeur et la dur\u00e9e des r\u00e9ponses aux traitements permettent d\u00e9sormais de mesurer la gu\u00e9rison, plut\u00f4t que de simplement l\u2019esp\u00e9rer \u00bb\u2075. Gr\u00e2ce aux progr\u00e8s continus, notamment au d\u00e9veloppement de nouvelles th\u00e9rapies et \u00e0 l\u2019utilisation plus pr\u00e9coce de traitements efficaces, on s\u2019attend \u00e0 ce que le nombre de personnes dont la maladie demeure aussi longtemps sous contr\u00f4le augmente au fil du temps. La recherche sur le my\u00e9lome progresse plus rapidement que jamais, ouvrant la voie \u00e0 des r\u00e9sultats toujours plus encourageants et \u00e0 de nouveaux espoirs pour les personnes touch\u00e9es par la maladie.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Quels sont les crit\u00e8res pour \u00e9valuer la gu\u00e9rison?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Selon la d\u00e9finition propos\u00e9e, un patient ayant re\u00e7u un diagnostic de my\u00e9lome ou pr\u00e9sentant une rechute pourrait \u00eatre consid\u00e9r\u00e9 comme gu\u00e9ri apr\u00e8s cinq ann\u00e9es de r\u00e9mission compl\u00e8te, <strong>sans aucun traitement contre le my\u00e9lome.<\/strong> Cette p\u00e9riode de cinq ans commence \u00e0 la date d\u2019arr\u00eat du traitement. Ainsi, les p\u00e9riodes sans signe de la maladie pendant lesquelles le patient re\u00e7oit encore un traitement ne sont pas prises en compte dans l\u2019\u00e9valuation de la gu\u00e9rison. Au cours de ces cinq ann\u00e9es, trois conditions doivent \u00eatre remplies\u00b3 :<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Au moins quatre tests de d\u00e9pistage de la maladie r\u00e9siduelle minimale (MRM) doivent \u00eatre n\u00e9gatifs.<\/strong> Un r\u00e9sultat n\u00e9gatif signifie qu\u2019aucune cellule de my\u00e9lome n\u2019a \u00e9t\u00e9 d\u00e9tect\u00e9e au seuil de sensibilit\u00e9 du test utilis\u00e9. L\u2019un de ces tests doit \u00eatre effectu\u00e9 \u00e0 la fin de la p\u00e9riode de cinq ans, et aucun des tests r\u00e9alis\u00e9s entre-temps ne doit \u00eatre positif.<\/li>\n\n\n\n<li><strong>Les tests de d\u00e9pistage de la MRM doivent \u00eatre extr\u00eamement sensibles. <\/strong>Plusieurs types de tests de d\u00e9pistage de la MRM sont actuellement disponibles ou en cours de d\u00e9veloppement. Pour r\u00e9pondre aux crit\u00e8res de la d\u00e9finition de la gu\u00e9rison, ces tests doivent pouvoir d\u00e9tecter une seule cellule de my\u00e9lome parmi un million de cellules (soit 10\u207b\u2076), au moyen du s\u00e9quen\u00e7age de nouvelle g\u00e9n\u00e9ration ou de la cytom\u00e9trie en flux de nouvelle g\u00e9n\u00e9ration.<\/li>\n\n\n\n<li><strong>Les examens d\u2019imagerie avanc\u00e9e ne doivent r\u00e9v\u00e9ler aucun signe de la maladie. <\/strong>Une tomographie par \u00e9mission de positons\/tomodensitom\u00e9trie (TEP-TDM) ou une imagerie de diffusion par r\u00e9sonance magn\u00e9tique (RM) du corps entier doit confirmer l\u2019absence de maladie au d\u00e9but et \u00e0 la fin de la p\u00e9riode de cinq ans. Tout examen suppl\u00e9mentaire effectu\u00e9 entre-temps ne doit r\u00e9v\u00e9ler aucun signe de la maladie.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Le crit\u00e8re de l\u2019absence de traitement est essentiel, car il permet de distinguer une v\u00e9ritable gu\u00e9rison d\u2019une maladie qui demeure ma\u00eetris\u00e9e gr\u00e2ce \u00e0 la prise continue de m\u00e9dicaments. La p\u00e9riode de cinq ans a \u00e9t\u00e9 retenue parce que les donn\u00e9es sur le my\u00e9lome montrent que le risque de rechute diminue consid\u00e9rablement apr\u00e8s ce d\u00e9lai. Cette tendance est \u00e9galement observ\u00e9e dans d\u2019autres cancers, comme le lymphome de Hodgkin et le cancer du testicule\u00b3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dans la pratique clinique, les tests de d\u00e9pistage de la MRM ne sont pas encore accessibles ni appropri\u00e9s pour tous les patients. Les d\u00e9cisions concernant les tests et les traitements doivent donc toujours \u00eatre adapt\u00e9es \u00e0 la situation de chaque personne, en collaboration avec son \u00e9quipe de soins. Il est important de souligner que le fait de ne pas r\u00e9pondre aux crit\u00e8res de la d\u00e9finition propos\u00e9e de la gu\u00e9rison ne signifie pas que le traitement a \u00e9chou\u00e9 ou qu\u2019une r\u00e9mission \u00e0 long terme est impossible.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Quelles sont les prochaines \u00e9tapes?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pour la premi\u00e8re fois, les patients et les professionnels de la sant\u00e9 disposent d\u2019une d\u00e9finition claire de la gu\u00e9rison, fond\u00e9e sur des crit\u00e8res mesurables. Toutefois, pour confirmer une gu\u00e9rison, il faut avoir recours \u00e0 des tests de d\u00e9pistage de la maladie r\u00e9siduelle minimale extr\u00eamement sensibles et \u00e0 des examens d\u2019imagerie avanc\u00e9e, qui ne sont pas encore syst\u00e9matiquement accessibles partout au Canada\u2076. La prochaine \u00e9tape consiste \u00e0 am\u00e9liorer l\u2019acc\u00e8s \u00e0 ces tests ainsi qu\u2019aux traitements efficaces permettant d\u2019obtenir des r\u00e9missions profondes et durables. La bonne nouvelle, c\u2019est que les tests de d\u00e9pistage de la MRM et les traitements \u00e9voluent rapidement\u00b3. Les patients peuvent contribuer \u00e0 ces progr\u00e8s en discutant avec leur \u00e9quipe de soins de ces tests et de ce que cela signifie pour leur traitement. Plus encourageant encore, le my\u00e9lome, autrefois consid\u00e9r\u00e9 comme une maladie qu\u2019on pouvait seulement ma\u00eetriser, est d\u00e9sormais, comme l\u2019a soulign\u00e9 le Dr Munshi dans ses remarques finales, \u00ab un cancer gu\u00e9rissable \u00bb pour certaines personnes\u2075.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">R\u00e9f\u00e9rences<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Statistique Canada. <em>Statistiques sur la survie au cancer, 1992 \u00e0 2021<\/em>. Le Quotidien; 13 ao\u00fbt 2025. Disponible sur : <a href=\"https:\/\/www150.statcan.gc.ca\/n1\/daily-quotidien\/250813\/dq250813a-fra.htm\">https:\/\/www150.statcan.gc.ca\/n1\/daily-quotidien\/250813\/dq250813a-fra.htm<\/a>.<\/li>\n\n\n\n<li>Jagannath S, Martin TG, Lin Y, et coll. <em>Long-term (\u22655-year) remission and survival after treatment with ciltacabtagene autoleucel in CARTITUDE-1 patients with relapsed\/refractory multiple myeloma<\/em>. J Clin Oncol; 2025;43(25):2766\u20132771. Disponible sur : <a href=\"https:\/\/doi.org\/10.1200\/JCO-25-00760\">https:\/\/doi.org\/10.1200\/JCO-25-00760<\/a>. (en anglais seulement)<\/li>\n\n\n\n<li>International Myeloma Society. <em>Global myeloma experts define cure for a disease long considered incurable<\/em> [communiqu\u00e9 de presse]. 23 septembre 2026. Disponible sur : <a href=\"https:\/\/www.myelomasociety.org\/ims-news-room\/myeloma-cure\/\">https:\/\/www.myelomasociety.org\/ims-news-room\/myeloma-cure\/<\/a>. (en anglais seulement)<\/li>\n\n\n\n<li>Cohen AD, Mateos MV, Cohen Y, et coll. <em>Long-term (\u22655-year) remission and survival with ciltacabtagene autoleucel in relapsed\/refractory multiple myeloma with 1-3 prior lines of therapy: CARTITUDE-2 Cohort A<\/em>. Affiche no PA-288. Pr\u00e9sent\u00e9e lors du 23e congr\u00e8s annuel de l\u2019International Myeloma Society, du 23 au 26 septembre 2026, \u00e0 Glasgow, en \u00c9cosse.<\/li>\n\n\n\n<li>Munshi NC. <em>IMS\/IMWG Consensus Update<\/em>. Pr\u00e9sentation donn\u00e9e lors du 23e congr\u00e8s annuel de l\u2019International Myeloma Society, du 23 au 26 septembre 2026, \u00e0 Glasgow, en \u00c9cosse.<\/li>\n\n\n\n<li>Mian HS, Visram A, Shih SC-M, et coll. <em>Minimal residual disease testing infrastructure in multiple myeloma: guidance for clinical trial and routine practice use in Canada<\/em>. Clin Lymphoma Myeloma Leuk. 2025;25(6):e404\u2013e410. Disponible sur : <a href=\"https:\/\/doi.org\/10.1016\/j.clml.2025.01.010\">https:\/\/doi.org\/10.1016\/j.clml.2025.01.010<\/a>. (en anglais seulement)<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Depuis sa premi\u00e8re description en 1844, le my\u00e9lome multiple est g\u00e9n\u00e9ralement consid\u00e9r\u00e9 comme une maladie incurable. Aujourd\u2019hui, pour la premi\u00e8re fois, l\u2019International Myeloma Society (IMS) et l\u2019International Myeloma Working Group (IMWG) proposent une d\u00e9finition consensuelle de ce que signifie la gu\u00e9rison du my\u00e9lome. Le Dr Nikhil Munshi a pr\u00e9sent\u00e9 cette d\u00e9finition le 23 septembre 2026, [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":37836,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","_members_access_role":[],"_members_access_error":""},"categories":[88,53,134],"tags":[],"class_list":["post-37839","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","category-actualites-et-evenement","category-recherche-et-science"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Depuis sa premi\u00e8re description en 1844, le my\u00e9lome multiple est g\u00e9n\u00e9ralement consid\u00e9r\u00e9 comme une maladie incurable. Aujourd\u2019hui, pour la premi\u00e8re fois, l\u2019International Myeloma Society (IMS) et l\u2019International Myeloma Working Group (IMWG) proposent une d\u00e9finition consensuelle de ce que signifie la gu\u00e9rison du my\u00e9lome. 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Aujourd\u2019hui, pour la premi\u00e8re fois, l\u2019International Myeloma Society (IMS) et l\u2019International Myeloma Working Group (IMWG) proposent une d\u00e9finition consensuelle de ce que signifie la gu\u00e9rison du my\u00e9lome. 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Aujourd\u2019hui, pour la premi\u00e8re fois, l\u2019International Myeloma Society (IMS) et l\u2019International Myeloma Working Group (IMWG) proposent une d\u00e9finition consensuelle de ce que signifie la gu\u00e9rison du my\u00e9lome. Le Dr Nikhil Munshi a pr\u00e9sent\u00e9 cette d\u00e9finition le 23 septembre 2026,\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BlogPosting\",\"@id\":\"https:\\\/\\\/myeloma.ca\\\/fr\\\/2026\\\/10\\\/26\\\/definir-la-guerison-du-myelome-multiple\\\/#blogposting\",\"name\":\"D\\u00e9finir la gu\\u00e9rison du my\\u00e9lome multiple | My\\u00e9lome Canada\",\"headline\":\"D\\u00e9finir la gu\\u00e9rison du my\\u00e9lome 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