{"id":84218,"date":"2024-11-15T16:02:12","date_gmt":"2024-11-15T07:02:12","guid":{"rendered":"https:\/\/www.hiro-clinic.or.jp\/nipt\/17q23-1-q23-2-deletion-syndrome\/"},"modified":"2025-08-12T15:27:23","modified_gmt":"2025-08-12T06:27:23","slug":"17q23-1-q23-2-deletion-syndrome","status":"publish","type":"post","link":"https:\/\/www.hiro-clinic.or.jp\/nipt\/17q23-1-q23-2-deletion-syndrome\/?lang=en","title":{"rendered":"Tetrasomy 18p Syndrome"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u76ee\u6b21<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/17q23-1-q23-2-deletion-syndrome\/?lang=en\/#1_Causes_of_the_disease\" >1. Causes of the disease<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/17q23-1-q23-2-deletion-syndrome\/?lang=en\/#2_Symptoms\" >2. Symptoms<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/17q23-1-q23-2-deletion-syndrome\/?lang=en\/#3_Treatment\" >3. Treatment<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/17q23-1-q23-2-deletion-syndrome\/?lang=en\/#4_Prognosis\" >4. Prognosis<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/17q23-1-q23-2-deletion-syndrome\/?lang=en\/#5_The_burden_on_parents\" >5. The burden on parents<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Causes_of_the_disease\"><\/span>1. Causes of the disease<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Tetrasomy 18p syndrome is an extremely rare chromosomal abnormality that occurs when part of the short arm of chromosome 18 (18p) doubles to four. This abnormality causes multiple symptoms that affect development, growth, and internal organ function.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Symptoms\"><\/span>2. Symptoms<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Developmental delay<\/strong>&nbsp;: noticeable delay in language and motor skills.<\/li>\n\n\n\n<li><strong>Decreased muscle tone<\/strong>&nbsp;: Muscle weakness and abnormal muscle tone may be observed.<\/li>\n\n\n\n<li><strong>Specific facial features<\/strong>&nbsp;: A distinctive facial appearance may be observed.<\/li>\n\n\n\n<li><strong>Intellectual disability<\/strong>&nbsp;: Mild to severe intellectual disability may occur.<\/li>\n\n\n\n<li><strong>Skeletal abnormalities<\/strong>&nbsp;: Scoliosis and abnormalities of the hands and feet may be present.<\/li>\n\n\n\n<li><strong>Visceral abnormalities<\/strong>&nbsp;: Abnormalities of the internal organs, such as the heart and kidneys, may be seen.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Treatment\"><\/span>3. Treatment<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Developmental Support<\/strong>&nbsp;: We provide physical, occupational and speech therapy to support development.<\/li>\n\n\n\n<li><strong>Visceral Management<\/strong>&nbsp;: Appropriate medical management is provided for cardiac and renal abnormalities.<\/li>\n\n\n\n<li><strong>Management of skeletal abnormalities<\/strong>&nbsp;: Orthopedic surgery may be performed if necessary.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Prognosis\"><\/span>4. Prognosis<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Depending on the severity of the condition and how it is managed, early help can help reduce symptoms and improve quality of life.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_The_burden_on_parents\"><\/span>5. The burden on parents<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Long-term treatment and medical management are required, which can be a huge burden for families. It is important to work with support groups and medical teams to receive appropriate support.<\/p>\n","protected":false},"excerpt":{"rendered":"1. Causes of the dis&#8230;\n <a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/17q23-1-q23-2-deletion-syndrome\/?lang=en\">\u7d9a\u304d\u3092\u8aad\u3080<\/a>","protected":false},"author":101,"featured_media":86709,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[97],"tags":[],"class_list":["post-84218","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/posts\/84218","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/users\/101"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/comments?post=84218"}],"version-history":[{"count":2,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/posts\/84218\/revisions"}],"predecessor-version":[{"id":109977,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/posts\/84218\/revisions\/109977"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/media\/86709"}],"wp:attachment":[{"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/media?parent=84218"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/categories?post=84218"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/tags?post=84218"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}