{"id":4518,"date":"2025-09-19T16:43:25","date_gmt":"2025-09-19T13:43:25","guid":{"rendered":"https:\/\/dmdwarrior.com\/?p=4518"},"modified":"2025-09-19T16:43:27","modified_gmt":"2025-09-19T13:43:27","slug":"mutations-and-deletions-amenable-to-exon-51-skipping-therapies-dmd","status":"publish","type":"post","link":"https:\/\/dmdwarrior.com\/pt\/mutations-and-deletions-amenable-to-exon-51-skipping-therapies-dmd\/","title":{"rendered":"Muta\u00e7\u00f5es e dele\u00e7\u00f5es pass\u00edveis de terapias de salto do exon 51 para distrofia muscular de Duchenne"},"content":{"rendered":"<p class=\"wp-block-paragraph\">A Distrofia Muscular de Duchenne (DMD) \u00e9 uma doen\u00e7a gen\u00e9tica grave causada por muta\u00e7\u00f5es no gene DMD, que leva \u00e0 aus\u00eancia ou quase aus\u00eancia de distrofina, uma prote\u00edna essencial para a for\u00e7a e estabilidade muscular. No entanto, para certos indiv\u00edduos, tratamentos promissores, como terapias de salto de exon, oferecem esperan\u00e7a \u2014 especialmente o salto do exon 51, que \u00e9 o exon mais comumente visado nas terapias atuais. <strong>Neste artigo, exploramos quais muta\u00e7\u00f5es e dele\u00e7\u00f5es s\u00e3o pass\u00edveis de salto do exon 51 e como determinar se um paciente pode se beneficiar dessa terapia.<\/strong><\/p>\n\n\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>\u00cdndice<\/h2><nav><ul><li><a href=\"#what-is-exon-51-skipping-therapy\">O que \u00e9 terapia de salto do exon 51?<\/a><ul><li><a href=\"#approved-exon-51-skipping-therapy\">Terapia de salto de Exon 51 aprovada<\/a><\/li><\/ul><\/li><li><a href=\"#why-is-exon-51-important-in-dmd\">Por que o \u00c9xon 51 \u00e9 importante na DMD?<\/a><\/li><li><a href=\"#deletions-amenable-for-exon-44-skipping\">Exclus\u00f5es pass\u00edveis de salto do exon 51<\/a><ul><li><a href=\"#common-deletions-amenable-to-exon-51-skipping\">Exclus\u00f5es comuns pass\u00edveis de salto do exon 51<\/a><\/li><\/ul><\/li><li><a href=\"#mutations-amenable-to-exon-44-skipping\">Muta\u00e7\u00f5es pass\u00edveis de salto do exon 51<\/a><\/li><li><a href=\"#potential-benefits-of-exon-44-skipping-for-dmd-patients\">Terapia de salto do Exon 51: o que esperar<\/a><\/li><li><a href=\"#summary-is-your-child-a-candidate-for-exon-51-skipping\">Resumo: Seu filho \u00e9 candidato ao salto do exon 51?<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"what-is-exon-51-skipping-therapy\">O que \u00e9 terapia de salto do exon 51?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O salto do exon 51 \u00e9 uma abordagem de medicina de precis\u00e3o que utiliza mol\u00e9culas sint\u00e9ticas (chamadas oligonucleot\u00eddeos antisense) para &quot;pular&quot; o exon 51 durante o processamento do RNA mensageiro (mRNA) do gene DMD. Ao pular o exon 51, o tratamento pode restaurar o quadro de leitura do gene, permitindo que o corpo produza uma vers\u00e3o mais curta, por\u00e9m funcional, da distrofina.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"approved-exon-51-skipping-therapy\">Terapia de salto de Exon 51 aprovada<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Eteplirsen (Exondys 51)<\/strong> \u2013 Aprovado pelos EUA FDA para tratamento de pacientes com DMD com muta\u00e7\u00f5es pass\u00edveis de salto do exon 51.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"why-is-exon-51-important-in-dmd\">Por que o \u00c9xon 51 \u00e9 importante na DMD?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Cerca de 13% dos pacientes com DMD apresentam muta\u00e7\u00f5es que podem levar ao salto do exon 51, tornando-o o alvo mais comum de salto do exon nas terapias atuais. Isso o torna altamente relevante para muitas fam\u00edlias que buscam tratamentos de ponta para a Duchenne.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"deletions-amenable-for-exon-44-skipping\">Exclus\u00f5es pass\u00edveis de salto do exon 51<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>O salto do exon 51 representa uma estrat\u00e9gia terap\u00eautica direcionada para um subconjunto de pacientes com distrofia muscular de Duchenne, especificamente aqueles com dele\u00e7\u00f5es envolvendo exons<\/strong>: 3-50, 4-50, 5-50, 6-50, 9-50, 10-50, 11-50, 13-50, 14-50, 15-50, 16-50, 17-50, 19-50, 21-50, 23-50, 24-50, 25-50, 26-50, 27-50, 28-50, 29-50,  30-50, 31-50, 32-50, 33-50, 34-50, 35-50, 36-50, 37-50, 38-50, 39-50, 40-50, 41-50, 42-50, 43-50, 45-50, 47-50, 48-50, 49-50, 50, 52, 52-61, 52-63, 52-64, 52-66, 52-76.<\/p>\n\n\n\n<div><a href=\"https:\/\/dmdwarrior.com\/wp-content\/uploads\/2025\/03\/amenable-to-exon-51-skipping-847x1024.jpg\" class=\"td-modal-image\"><figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"847\" height=\"1024\" src=\"https:\/\/dmdwarrior.com\/wp-content\/uploads\/2025\/03\/amenable-to-exon-51-skipping-847x1024.jpg\" alt=\"Muta\u00e7\u00f5es e dele\u00e7\u00f5es pass\u00edveis de terapias de salto do exon 51 para distrofia muscular de Duchenne\" class=\"wp-image-4526\" title=\"\" srcset=\"https:\/\/dmdwarrior.com\/wp-content\/uploads\/2025\/03\/amenable-to-exon-51-skipping-847x1024.jpg 847w, https:\/\/dmdwarrior.com\/wp-content\/uploads\/2025\/03\/amenable-to-exon-51-skipping-248x300.jpg 248w, https:\/\/dmdwarrior.com\/wp-content\/uploads\/2025\/03\/amenable-to-exon-51-skipping-768x929.jpg 768w, https:\/\/dmdwarrior.com\/wp-content\/uploads\/2025\/03\/amenable-to-exon-51-skipping-1270x1536.jpg 1270w, https:\/\/dmdwarrior.com\/wp-content\/uploads\/2025\/03\/amenable-to-exon-51-skipping-1693x2048.jpg 1693w, https:\/\/dmdwarrior.com\/wp-content\/uploads\/2025\/03\/amenable-to-exon-51-skipping-10x12.jpg 10w, https:\/\/dmdwarrior.com\/wp-content\/uploads\/2025\/03\/amenable-to-exon-51-skipping-347x420.jpg 347w, https:\/\/dmdwarrior.com\/wp-content\/uploads\/2025\/03\/amenable-to-exon-51-skipping-150x181.jpg 150w, https:\/\/dmdwarrior.com\/wp-content\/uploads\/2025\/03\/amenable-to-exon-51-skipping-300x363.jpg 300w, https:\/\/dmdwarrior.com\/wp-content\/uploads\/2025\/03\/amenable-to-exon-51-skipping-696x842.jpg 696w, https:\/\/dmdwarrior.com\/wp-content\/uploads\/2025\/03\/amenable-to-exon-51-skipping-1068x1292.jpg 1068w, https:\/\/dmdwarrior.com\/wp-content\/uploads\/2025\/03\/amenable-to-exon-51-skipping-1920x2323.jpg 1920w, https:\/\/dmdwarrior.com\/wp-content\/uploads\/2025\/03\/amenable-to-exon-51-skipping.jpg 1984w\" sizes=\"auto, (max-width: 847px) 100vw, 847px\" \/><\/figure><\/a><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/dmdwarrior.com\/pt\/duchenne-exon-deletion-tool\/\">Descubra nossa ferramenta de busca de exclus\u00e3o de exon<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para ser candidato ao salto do exon 51, um paciente deve ter uma dele\u00e7\u00e3o de deslocamento de quadro que pode ser corrigida saltando o exon 51. O objetivo \u00e9 trazer o gene DMD de volta ao quadro de leitura correto.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"common-deletions-amenable-to-exon-51-skipping\">Exclus\u00f5es comuns pass\u00edveis de salto do exon 51<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Se o teste gen\u00e9tico mostrar uma das seguintes dele\u00e7\u00f5es, a terapia de salto do exon 51 pode ser aplic\u00e1vel:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Dele\u00e7\u00e3o do exon 50<\/li>\n\n\n\n<li>Dele\u00e7\u00e3o dos exons 48\u201350<\/li>\n\n\n\n<li>Dele\u00e7\u00e3o dos exons 47\u201350<\/li>\n\n\n\n<li>Dele\u00e7\u00e3o dos exons 49\u201350<\/li>\n\n\n\n<li>Dele\u00e7\u00e3o do exon 52<\/li>\n\n\n\n<li>Dele\u00e7\u00e3o dos exons 52\u201363<\/li>\n\n\n\n<li>Exclus\u00e3o dos exons 45\u201350 (em alguns casos, dependendo do estado do quadro)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Essas dele\u00e7\u00f5es interrompem o quadro de leitura de uma forma que pode ser restaurada pulando o exon 51, potencialmente produzindo uma prote\u00edna distrofina funcional.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"mutations-amenable-to-exon-44-skipping\">Muta\u00e7\u00f5es pass\u00edveis de salto do exon 51<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>As muta\u00e7\u00f5es pass\u00edveis de salto do exon 51 na distrofia muscular de Duchenne incluem os seguintes exons<\/strong>: 3-50, 4-50, 5-50, 6-50, 9-50, 10-50, 11-50, 13-50, 14-50, 15-50, 16-50, 17-50, 19-50, 21-50, 23-50, 24-50, 25-50, 26-50, 27-50, 28-50, 29-50,  30-50, 31-50, 32-50, 33-50, 34-50, 35-50, 36-50, 37-50, 38-50, 39-50, 40-50, 41-50, 42-50, 43-50, 45-50, 47-50, 48-50, 49-50, 50, 52, 52-61, 52-63, 52-64, 52-66, 52-76.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"potential-benefits-of-exon-44-skipping-for-dmd-patients\">Terapia de salto do Exon 51: o que esperar<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Se o seu filho se qualificar, o eteplirsen pode ser uma op\u00e7\u00e3o. Esta terapia \u00e9 administrada por meio de infus\u00f5es intravenosas semanais e foi desenvolvida para retardar a progress\u00e3o da degenera\u00e7\u00e3o muscular.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Benef\u00edcios:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Progress\u00e3o mais lenta da doen\u00e7a<\/li>\n\n\n\n<li>Melhoria na produ\u00e7\u00e3o de distrofina<\/li>\n\n\n\n<li>Preserva\u00e7\u00e3o potencial da deambula\u00e7\u00e3o e da fun\u00e7\u00e3o pulmonar<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Limita\u00e7\u00f5es:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Isto n\u00e3o \u00e9 uma cura, mas um tratamento modificador da doen\u00e7a.<\/li>\n\n\n\n<li>Funciona apenas para muta\u00e7\u00f5es espec\u00edficas pass\u00edveis de salto do exon 51.<\/li>\n\n\n\n<li>Requer comprometimento de longo prazo e acompanhamento regular.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"summary-is-your-child-a-candidate-for-exon-51-skipping\">Resumo: Seu filho \u00e9 candidato ao salto do exon 51?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Se seu filho foi diagnosticado com DMD e tem uma muta\u00e7\u00e3o pr\u00f3xima ao exon 51, como uma dele\u00e7\u00e3o do exon 50 ou do exon 52, h\u00e1 uma possibilidade de que ele possa se beneficiar da terapia de omiss\u00e3o do exon 51.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd0d Principais conclus\u00f5es:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>O salto do exon 51 ajuda a restaurar o quadro de leitura da distrofina em dele\u00e7\u00f5es espec\u00edficas.<\/li>\n\n\n\n<li>Cerca de 13% de pacientes com DMD s\u00e3o eleg\u00edveis.<\/li>\n\n\n\n<li>Testes gen\u00e9ticos s\u00e3o essenciais para determinar a elegibilidade.<\/li>\n\n\n\n<li>Terapias como eteplirsen s\u00e3o aprovadas pelo FDA para muta\u00e7\u00f5es sens\u00edveis ao exon 51.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Saber mais<\/strong>:&nbsp;<a href=\"https:\/\/dmdwarrior.com\/pt\/exon-51-skipping-therapies-dmd\/\">Pr\u00f3ximas terapias de salto do Exon 51 para o tratamento da distrofia muscular de Duchenne<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Duchenne Muscular Dystrophy (DMD) is a severe genetic disorder caused by mutations in the DMD gene, which leads to the absence or near absence of dystrophin, a critical protein for muscle strength and stability. However, for certain individuals, promising treatments such as exon skipping therapies offer hope\u2014especially exon 51 skipping, which is the most commonly [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4524,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[122,193,421,194,77,178],"class_list":["post-4518","post","type-post","status-publish","format-standard","has-post-thumbnail","category-dmd","tag-exon-51","tag-exon-51-skipping","tag-exon-51-skipping-therapy","tag-exon-51-treatment","tag-exon-skipping","tag-exon-skipping-therapies"],"_links":{"self":[{"href":"https:\/\/dmdwarrior.com\/pt\/wp-json\/wp\/v2\/posts\/4518","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dmdwarrior.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dmdwarrior.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dmdwarrior.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dmdwarrior.com\/pt\/wp-json\/wp\/v2\/comments?post=4518"}],"version-history":[{"count":0,"href":"https:\/\/dmdwarrior.com\/pt\/wp-json\/wp\/v2\/posts\/4518\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dmdwarrior.com\/pt\/wp-json\/wp\/v2\/media\/4524"}],"wp:attachment":[{"href":"https:\/\/dmdwarrior.com\/pt\/wp-json\/wp\/v2\/media?parent=4518"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dmdwarrior.com\/pt\/wp-json\/wp\/v2\/categories?post=4518"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dmdwarrior.com\/pt\/wp-json\/wp\/v2\/tags?post=4518"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}