{"id":1671,"date":"2021-10-23T14:30:45","date_gmt":"2021-10-23T14:30:45","guid":{"rendered":"https:\/\/blogs.bmj.com\/jmg\/?p=1671"},"modified":"2026-02-23T21:10:01","modified_gmt":"2026-02-23T21:10:01","slug":"sufu-haploinsufficiency-causes-a-recognisable-neurodevelopmental-phenotype-at-the-mild-end-of-the-joubert-syndrome-spectrum","status":"publish","type":"post","link":"https:\/\/blogs.bmj.com\/jmg\/2021\/10\/23\/sufu-haploinsufficiency-causes-a-recognisable-neurodevelopmental-phenotype-at-the-mild-end-of-the-joubert-syndrome-spectrum\/","title":{"rendered":"SUFU haploinsufficiency causes a recognisable neurodevelopmental phenotype at the mild end of the Joubert syndrome spectrum (Contributed by Professor Enza Maria Valente)"},"content":{"rendered":"<p>Joubert syndrome (JS) is a genetic neurodevelopmental condition diagnosed by characteristic brain imaging findings in patients with abnormal eye movements, ataxia, and cognitive impairment. Until recently, all JS patients have been consistent with autosomal or X-linked recessive inheritance of variants in one of &gt;40 ciliary genes. This study and other recent work demonstrate that dominant inheritance of SUFU loss-of-function variants cause a spectrum of neurological involvement from classic JS, to isolated abnormal eye movements, to subtle brain imaging abnormalities in the absence of neurological symptoms. These findings will help avoid missed diagnoses and improve prognostic, recurrence risk, and treatment recommendations. (<a href=\"https:\/\/jmg.bmj.com\/content\/early\/2021\/10\/20\/jmedgenet-2021-108114\">https:\/\/jmg.bmj.com\/content\/early\/2021\/10\/20\/jmedgenet-2021-108114<\/a> )<!--TrendMD v2.4.8--><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Joubert syndrome (JS) is a genetic neurodevelopmental condition diagnosed by characteristic brain imaging findings in patients with abnormal eye movements, ataxia, and cognitive impairment. Until recently, all JS patients have been consistent with autosomal or X-linked recessive inheritance of variants in one of &gt;40 ciliary genes. This study and other recent work demonstrate that dominant [&#8230;]<\/p>\n<p><a class=\"btn btn-secondary understrap-read-more-link\" href=\"https:\/\/blogs.bmj.com\/jmg\/2021\/10\/23\/sufu-haploinsufficiency-causes-a-recognisable-neurodevelopmental-phenotype-at-the-mild-end-of-the-joubert-syndrome-spectrum\/\">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-1671","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SUFU haploinsufficiency causes a recognisable neurodevelopmental phenotype at the mild end of the Joubert syndrome spectrum (Contributed by Professor Enza Maria Valente) - 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\/10\/23\/sufu-haploinsufficiency-causes-a-recognisable-neurodevelopmental-phenotype-at-the-mild-end-of-the-joubert-syndrome-spectrum\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SUFU haploinsufficiency causes a recognisable neurodevelopmental phenotype at the mild end of the Joubert syndrome spectrum (Contributed by Professor Enza Maria Valente) - JMG Contact blog\" \/>\n<meta property=\"og:description\" content=\"Joubert syndrome (JS) is a genetic neurodevelopmental condition diagnosed by characteristic brain imaging findings in patients with abnormal eye movements, ataxia, and cognitive impairment. Until recently, all JS patients have been consistent with autosomal or X-linked recessive inheritance of variants in one of &gt;40 ciliary genes. This study and other recent work demonstrate that dominant [...]Read More...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blogs.bmj.com\/jmg\/2021\/10\/23\/sufu-haploinsufficiency-causes-a-recognisable-neurodevelopmental-phenotype-at-the-mild-end-of-the-joubert-syndrome-spectrum\/\" \/>\n<meta property=\"og:site_name\" content=\"JMG Contact blog\" \/>\n<meta property=\"article:published_time\" content=\"2021-10-23T14:30:45+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-02-23T21:10:01+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\\\/10\\\/23\\\/sufu-haploinsufficiency-causes-a-recognisable-neurodevelopmental-phenotype-at-the-mild-end-of-the-joubert-syndrome-spectrum\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2021\\\/10\\\/23\\\/sufu-haploinsufficiency-causes-a-recognisable-neurodevelopmental-phenotype-at-the-mild-end-of-the-joubert-syndrome-spectrum\\\/\"},\"author\":{\"name\":\"hqqu\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/#\\\/schema\\\/person\\\/be0250f8d5b52412c3e7c222dabd591b\"},\"headline\":\"SUFU haploinsufficiency causes a recognisable neurodevelopmental phenotype at the mild end of the Joubert syndrome spectrum (Contributed by Professor Enza Maria Valente)\",\"datePublished\":\"2021-10-23T14:30:45+00:00\",\"dateModified\":\"2026-02-23T21:10:01+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2021\\\/10\\\/23\\\/sufu-haploinsufficiency-causes-a-recognisable-neurodevelopmental-phenotype-at-the-mild-end-of-the-joubert-syndrome-spectrum\\\/\"},\"wordCount\":130,\"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\\\/10\\\/23\\\/sufu-haploinsufficiency-causes-a-recognisable-neurodevelopmental-phenotype-at-the-mild-end-of-the-joubert-syndrome-spectrum\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2021\\\/10\\\/23\\\/sufu-haploinsufficiency-causes-a-recognisable-neurodevelopmental-phenotype-at-the-mild-end-of-the-joubert-syndrome-spectrum\\\/\",\"url\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2021\\\/10\\\/23\\\/sufu-haploinsufficiency-causes-a-recognisable-neurodevelopmental-phenotype-at-the-mild-end-of-the-joubert-syndrome-spectrum\\\/\",\"name\":\"SUFU haploinsufficiency causes a recognisable neurodevelopmental phenotype at the mild end of the Joubert syndrome spectrum (Contributed by Professor Enza Maria Valente) - 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