{"id":1681,"date":"2021-12-09T02:49:23","date_gmt":"2021-12-09T02:49:23","guid":{"rendered":"https:\/\/blogs.bmj.com\/jmg\/?p=1681"},"modified":"2026-02-23T01:10:06","modified_gmt":"2026-02-23T01:10:06","slug":"phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study","status":"publish","type":"post","link":"https:\/\/blogs.bmj.com\/jmg\/2021\/12\/09\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\/","title":{"rendered":"Phenotypic spectrum and clinical course of single large-scale mitochondrial DNA deletion disease in the paediatric population: a multicentre study (Contributed by Mr. Kristoffer Bj\u00f6rkman)"},"content":{"rendered":"<p>Large-scale mitochondrial DNA deletions are one of the most common causes of mitochondrial disease. The presentation varies greatly and understanding of the disease course has remained unclear. This large study of 80 patients with disease onset in childhood provides a detailed and improved insight into the characteristic symptoms, signs and course of the disease. It demonstrates that a broad spectrum of age-dependent multi-organ involvement is frequent. The findings will be of help in identifying affected patients and point to the importance of coordinated multidisciplinary follow up. (<a href=\"https:\/\/jmg.bmj.com\/content\/early\/2021\/12\/05\/jmedgenet-2021-108006\">https:\/\/jmg.bmj.com\/content\/early\/2021\/12\/05\/jmedgenet-2021-108006<\/a> )<!--TrendMD v2.4.8--><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Large-scale mitochondrial DNA deletions are one of the most common causes of mitochondrial disease. The presentation varies greatly and understanding of the disease course has remained unclear. This large study of 80 patients with disease onset in childhood provides a detailed and improved insight into the characteristic symptoms, signs and course of the disease. It [&#8230;]<\/p>\n<p><a class=\"btn btn-secondary understrap-read-more-link\" href=\"https:\/\/blogs.bmj.com\/jmg\/2021\/12\/09\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\/\">Read More&#8230;<\/a><\/p>\n","protected":false},"author":123,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1681","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Phenotypic spectrum and clinical course of single large-scale mitochondrial DNA deletion disease in the paediatric population: a multicentre study (Contributed by Mr. Kristoffer Bj\u00f6rkman) - JMG Contact blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.bmj.com\/jmg\/2021\/12\/09\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Phenotypic spectrum and clinical course of single large-scale mitochondrial DNA deletion disease in the paediatric population: a multicentre study (Contributed by Mr. Kristoffer Bj\u00f6rkman) - JMG Contact blog\" \/>\n<meta property=\"og:description\" content=\"Large-scale mitochondrial DNA deletions are one of the most common causes of mitochondrial disease. The presentation varies greatly and understanding of the disease course has remained unclear. This large study of 80 patients with disease onset in childhood provides a detailed and improved insight into the characteristic symptoms, signs and course of the disease. It [...]Read More...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blogs.bmj.com\/jmg\/2021\/12\/09\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\/\" \/>\n<meta property=\"og:site_name\" content=\"JMG Contact blog\" \/>\n<meta property=\"article:published_time\" content=\"2021-12-09T02:49:23+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-02-23T01:10:06+00:00\" \/>\n<meta name=\"author\" content=\"hqqu\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@HuiQiQu\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"hqqu\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2021\\\/12\\\/09\\\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2021\\\/12\\\/09\\\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\\\/\"},\"author\":{\"name\":\"hqqu\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/#\\\/schema\\\/person\\\/be0250f8d5b52412c3e7c222dabd591b\"},\"headline\":\"Phenotypic spectrum and clinical course of single large-scale mitochondrial DNA deletion disease in the paediatric population: a multicentre study (Contributed by Mr. Kristoffer Bj\u00f6rkman)\",\"datePublished\":\"2021-12-09T02:49:23+00:00\",\"dateModified\":\"2026-02-23T01:10:06+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2021\\\/12\\\/09\\\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\\\/\"},\"wordCount\":118,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/#organization\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2021\\\/12\\\/09\\\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2021\\\/12\\\/09\\\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\\\/\",\"url\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2021\\\/12\\\/09\\\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\\\/\",\"name\":\"Phenotypic spectrum and clinical course of single large-scale mitochondrial DNA deletion disease in the paediatric population: a multicentre study (Contributed by Mr. Kristoffer Bj\u00f6rkman) - JMG Contact blog\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/#website\"},\"datePublished\":\"2021-12-09T02:49:23+00:00\",\"dateModified\":\"2026-02-23T01:10:06+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2021\\\/12\\\/09\\\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2021\\\/12\\\/09\\\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2021\\\/12\\\/09\\\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Phenotypic spectrum and clinical course of single large-scale mitochondrial DNA deletion disease in the paediatric population: a multicentre study (Contributed by Mr. Kristoffer Bj\u00f6rkman)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/#website\",\"url\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/\",\"name\":\"JMG Contact blog\",\"description\":\"JMG Contact blog\",\"publisher\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/#organization\",\"name\":\"JMG Contact blog\",\"url\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/files\\\/2017\\\/10\\\/blog-logo-jmg.png\",\"contentUrl\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/files\\\/2017\\\/10\\\/blog-logo-jmg.png\",\"width\":300,\"height\":34,\"caption\":\"JMG Contact blog\"},\"image\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/#\\\/schema\\\/person\\\/be0250f8d5b52412c3e7c222dabd591b\",\"name\":\"hqqu\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/920bc4e81500cde88def4bfd7775029cb154e422c5460b9cf80d5c47137d6f35?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/920bc4e81500cde88def4bfd7775029cb154e422c5460b9cf80d5c47137d6f35?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/920bc4e81500cde88def4bfd7775029cb154e422c5460b9cf80d5c47137d6f35?s=96&d=mm&r=g\",\"caption\":\"hqqu\"},\"description\":\"Huiqi Qu has a background as a physician trained in internal medicine and a PhD in Experimental Medicine (Endocrinology). His research applies human genetics and multi-omics to complex and pediatric diseases, including GWAS, polygenic risk scores (PRS), single-cell transcriptomics, and integrative genomics to support precision medicine and clinical translation.\",\"sameAs\":[\"https:\\\/\\\/x.com\\\/HuiQiQu\"],\"url\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/author\\\/hqiqu\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Phenotypic spectrum and clinical course of single large-scale mitochondrial DNA deletion disease in the paediatric population: a multicentre study (Contributed by Mr. Kristoffer Bj\u00f6rkman) - JMG Contact blog","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/blogs.bmj.com\/jmg\/2021\/12\/09\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\/","og_locale":"en_US","og_type":"article","og_title":"Phenotypic spectrum and clinical course of single large-scale mitochondrial DNA deletion disease in the paediatric population: a multicentre study (Contributed by Mr. Kristoffer Bj\u00f6rkman) - JMG Contact blog","og_description":"Large-scale mitochondrial DNA deletions are one of the most common causes of mitochondrial disease. The presentation varies greatly and understanding of the disease course has remained unclear. This large study of 80 patients with disease onset in childhood provides a detailed and improved insight into the characteristic symptoms, signs and course of the disease. It [...]Read More...","og_url":"https:\/\/blogs.bmj.com\/jmg\/2021\/12\/09\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\/","og_site_name":"JMG Contact blog","article_published_time":"2021-12-09T02:49:23+00:00","article_modified_time":"2026-02-23T01:10:06+00:00","author":"hqqu","twitter_card":"summary_large_image","twitter_creator":"@HuiQiQu","twitter_misc":{"Written by":"hqqu","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/blogs.bmj.com\/jmg\/2021\/12\/09\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\/#article","isPartOf":{"@id":"https:\/\/blogs.bmj.com\/jmg\/2021\/12\/09\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\/"},"author":{"name":"hqqu","@id":"https:\/\/blogs.bmj.com\/jmg\/#\/schema\/person\/be0250f8d5b52412c3e7c222dabd591b"},"headline":"Phenotypic spectrum and clinical course of single large-scale mitochondrial DNA deletion disease in the paediatric population: a multicentre study (Contributed by Mr. Kristoffer Bj\u00f6rkman)","datePublished":"2021-12-09T02:49:23+00:00","dateModified":"2026-02-23T01:10:06+00:00","mainEntityOfPage":{"@id":"https:\/\/blogs.bmj.com\/jmg\/2021\/12\/09\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\/"},"wordCount":118,"commentCount":0,"publisher":{"@id":"https:\/\/blogs.bmj.com\/jmg\/#organization"},"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/blogs.bmj.com\/jmg\/2021\/12\/09\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/blogs.bmj.com\/jmg\/2021\/12\/09\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\/","url":"https:\/\/blogs.bmj.com\/jmg\/2021\/12\/09\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\/","name":"Phenotypic spectrum and clinical course of single large-scale mitochondrial DNA deletion disease in the paediatric population: a multicentre study (Contributed by Mr. Kristoffer Bj\u00f6rkman) - JMG Contact blog","isPartOf":{"@id":"https:\/\/blogs.bmj.com\/jmg\/#website"},"datePublished":"2021-12-09T02:49:23+00:00","dateModified":"2026-02-23T01:10:06+00:00","breadcrumb":{"@id":"https:\/\/blogs.bmj.com\/jmg\/2021\/12\/09\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/blogs.bmj.com\/jmg\/2021\/12\/09\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/blogs.bmj.com\/jmg\/2021\/12\/09\/phenotypic-spectrum-and-clinical-course-of-single-large-scale-mitochondrial-dna-deletion-disease-in-the-paediatric-population-a-multicentre-study\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/blogs.bmj.com\/jmg\/"},{"@type":"ListItem","position":2,"name":"Phenotypic spectrum and clinical course of single large-scale mitochondrial DNA deletion disease in the paediatric population: a multicentre study (Contributed by Mr. Kristoffer Bj\u00f6rkman)"}]},{"@type":"WebSite","@id":"https:\/\/blogs.bmj.com\/jmg\/#website","url":"https:\/\/blogs.bmj.com\/jmg\/","name":"JMG Contact blog","description":"JMG Contact blog","publisher":{"@id":"https:\/\/blogs.bmj.com\/jmg\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/blogs.bmj.com\/jmg\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/blogs.bmj.com\/jmg\/#organization","name":"JMG Contact blog","url":"https:\/\/blogs.bmj.com\/jmg\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/blogs.bmj.com\/jmg\/#\/schema\/logo\/image\/","url":"https:\/\/blogs.bmj.com\/jmg\/files\/2017\/10\/blog-logo-jmg.png","contentUrl":"https:\/\/blogs.bmj.com\/jmg\/files\/2017\/10\/blog-logo-jmg.png","width":300,"height":34,"caption":"JMG Contact blog"},"image":{"@id":"https:\/\/blogs.bmj.com\/jmg\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/blogs.bmj.com\/jmg\/#\/schema\/person\/be0250f8d5b52412c3e7c222dabd591b","name":"hqqu","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/920bc4e81500cde88def4bfd7775029cb154e422c5460b9cf80d5c47137d6f35?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/920bc4e81500cde88def4bfd7775029cb154e422c5460b9cf80d5c47137d6f35?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/920bc4e81500cde88def4bfd7775029cb154e422c5460b9cf80d5c47137d6f35?s=96&d=mm&r=g","caption":"hqqu"},"description":"Huiqi Qu has a background as a physician trained in internal medicine and a PhD in Experimental Medicine (Endocrinology). His research applies human genetics and multi-omics to complex and pediatric diseases, including GWAS, polygenic risk scores (PRS), single-cell transcriptomics, and integrative genomics to support precision medicine and clinical translation.","sameAs":["https:\/\/x.com\/HuiQiQu"],"url":"https:\/\/blogs.bmj.com\/jmg\/author\/hqiqu\/"}]}},"_links":{"self":[{"href":"https:\/\/blogs.bmj.com\/jmg\/wp-json\/wp\/v2\/posts\/1681","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.bmj.com\/jmg\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.bmj.com\/jmg\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.bmj.com\/jmg\/wp-json\/wp\/v2\/users\/123"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.bmj.com\/jmg\/wp-json\/wp\/v2\/comments?post=1681"}],"version-history":[{"count":0,"href":"https:\/\/blogs.bmj.com\/jmg\/wp-json\/wp\/v2\/posts\/1681\/revisions"}],"wp:attachment":[{"href":"https:\/\/blogs.bmj.com\/jmg\/wp-json\/wp\/v2\/media?parent=1681"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.bmj.com\/jmg\/wp-json\/wp\/v2\/categories?post=1681"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.bmj.com\/jmg\/wp-json\/wp\/v2\/tags?post=1681"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}