{"id":951,"date":"2016-11-22T19:58:34","date_gmt":"2016-11-22T19:58:34","guid":{"rendered":"https:\/\/blogs.bmj.com\/jmg\/?p=951"},"modified":"2026-02-24T21:15:46","modified_gmt":"2026-02-24T21:15:46","slug":"hypersuccinylacetonemia-and-normal-liver-function-in-maleylacetoacetate-isomerase-deficiency","status":"publish","type":"post","link":"https:\/\/blogs.bmj.com\/jmg\/2016\/11\/22\/hypersuccinylacetonemia-and-normal-liver-function-in-maleylacetoacetate-isomerase-deficiency\/","title":{"rendered":"Hypersuccinylacetonemia and normal liver function in maleylacetoacetate isomerase deficiency (Contributed by Dr. Grant Mitchell)"},"content":{"rendered":"<p>Tyrosinemia is a genetic disease that causes liver failure, cirrhosis and liver cancer. Succinylacetone is a substance that is elevated in tyrosinemia. Using succinylacetone for newborn screening permits early treatment of tyrosinemia, which can prevent liver disease. Six babies were detected by screening but had normal liver function. Even without special treatment, each child has maintained normal liver function. Each has a genetic deficiency of an enzyme called maleylacetoacetate isomerase, that is related to but different from the enzyme that causes tyrosinemia. Recognizing this newly-discovered condition is important for proper genetic counselling and treatment of babies detected by tyrosinemia screening. (<a href=\"http:\/\/jmg.bmj.com\/content\/early\/2016\/11\/22\/jmedgenet-2016-104289\">http:\/\/jmg.bmj.com\/content\/early\/2016\/11\/22\/jmedgenet-2016-104289<\/a> )<!--TrendMD v2.4.8--><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tyrosinemia is a genetic disease that causes liver failure, cirrhosis and liver cancer. Succinylacetone is a substance that is elevated in tyrosinemia. Using succinylacetone for newborn screening permits early treatment of tyrosinemia, which can prevent liver disease. Six babies were detected by screening but had normal liver function. Even without special treatment, each child has [&#8230;]<\/p>\n<p><a class=\"btn btn-secondary understrap-read-more-link\" href=\"https:\/\/blogs.bmj.com\/jmg\/2016\/11\/22\/hypersuccinylacetonemia-and-normal-liver-function-in-maleylacetoacetate-isomerase-deficiency\/\">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-951","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Hypersuccinylacetonemia and normal liver function in maleylacetoacetate isomerase deficiency (Contributed by Dr. Grant Mitchell) - 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\/2016\/11\/22\/hypersuccinylacetonemia-and-normal-liver-function-in-maleylacetoacetate-isomerase-deficiency\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hypersuccinylacetonemia and normal liver function in maleylacetoacetate isomerase deficiency (Contributed by Dr. Grant Mitchell) - JMG Contact blog\" \/>\n<meta property=\"og:description\" content=\"Tyrosinemia is a genetic disease that causes liver failure, cirrhosis and liver cancer. Succinylacetone is a substance that is elevated in tyrosinemia. Using succinylacetone for newborn screening permits early treatment of tyrosinemia, which can prevent liver disease. Six babies were detected by screening but had normal liver function. Even without special treatment, each child has [...]Read More...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blogs.bmj.com\/jmg\/2016\/11\/22\/hypersuccinylacetonemia-and-normal-liver-function-in-maleylacetoacetate-isomerase-deficiency\/\" \/>\n<meta property=\"og:site_name\" content=\"JMG Contact blog\" \/>\n<meta property=\"article:published_time\" content=\"2016-11-22T19:58:34+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-02-24T21:15:46+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\\\/2016\\\/11\\\/22\\\/hypersuccinylacetonemia-and-normal-liver-function-in-maleylacetoacetate-isomerase-deficiency\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2016\\\/11\\\/22\\\/hypersuccinylacetonemia-and-normal-liver-function-in-maleylacetoacetate-isomerase-deficiency\\\/\"},\"author\":{\"name\":\"hqqu\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/#\\\/schema\\\/person\\\/be0250f8d5b52412c3e7c222dabd591b\"},\"headline\":\"Hypersuccinylacetonemia and normal liver function in maleylacetoacetate isomerase deficiency (Contributed by Dr. Grant Mitchell)\",\"datePublished\":\"2016-11-22T19:58:34+00:00\",\"dateModified\":\"2026-02-24T21:15:46+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2016\\\/11\\\/22\\\/hypersuccinylacetonemia-and-normal-liver-function-in-maleylacetoacetate-isomerase-deficiency\\\/\"},\"wordCount\":122,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/#organization\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2016\\\/11\\\/22\\\/hypersuccinylacetonemia-and-normal-liver-function-in-maleylacetoacetate-isomerase-deficiency\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2016\\\/11\\\/22\\\/hypersuccinylacetonemia-and-normal-liver-function-in-maleylacetoacetate-isomerase-deficiency\\\/\",\"url\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2016\\\/11\\\/22\\\/hypersuccinylacetonemia-and-normal-liver-function-in-maleylacetoacetate-isomerase-deficiency\\\/\",\"name\":\"Hypersuccinylacetonemia and normal liver function in maleylacetoacetate isomerase deficiency (Contributed by Dr. Grant Mitchell) - 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