{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,13]],"date-time":"2025-05-13T15:21:52Z","timestamp":1747149712093,"version":"3.40.5"},"reference-count":18,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2021,3,26]],"date-time":"2021-03-26T00:00:00Z","timestamp":1616716800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["JIMD Reports"],"published-print":{"date-parts":[[2021,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Mucopolysaccharidosis type II (MPS II) is a multi\u2010systemic disorder arising due to pathogenic variants in the gene located on chromosome Xq28 encoding the lysosomal enzyme, iduronate 2\u2010sulfatase (IDS). The broad clinical heterogeneity of MPS II can be partly ascribed to the high level of molecular diversity in the gene locus with the majority of variants localised within one family. Here, we describe a case of fetal hepatomegaly that was causatively investigated for 151 genes associated with fetal hydrops and lysosomal diseases. Sequence analysis identified a novel hemizygous variant, pAsp532Gly, in exon 9 of the <jats:italic>IDS<\/jats:italic> gene. Determination of IDS activity in cultured amniotic fluid cells returned 8% of normal activity and analysis of a second sulfatase was normal, the latter virtually excluding multiple sulfatase deficiency. Together, these data supported a diagnosis of MPS II in the fetus. Additional measurement of a signature disaccharide in the amniotic fluid was normal, conflicting with enzymology indications. The baby was unremarkable at birth and 3\u2009years later shows no clinical suspicion of MPS II, normal urinary disaccharide concentrations, and reduced IDS activity in leukocytes. His 5\u2010year\u2010old brother was subsequently shown to carry the same pAsp532Gly variant, with normal urinary disaccharide concentrations, reduced leukocyte IDS activity and normal phenotype. This case highlights the importance of thorough biochemical investigations, clinical and family correlation in determining the significance of genetic variants in <jats:italic>IDS<\/jats:italic>.<\/jats:p>","DOI":"10.1002\/jmd2.12214","type":"journal-article","created":{"date-parts":[[2021,3,26]],"date-time":"2021-03-26T11:41:49Z","timestamp":1616758909000},"page":"10-14","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Functional assessment of the genetic findings indicating mucopolysaccharidosis type <scp>II<\/scp> in the prenatal setting"],"prefix":"10.1002","volume":"60","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9092-8942","authenticated-orcid":false,"given":"Maria","family":"Fuller","sequence":"first","affiliation":[{"name":"Genetics and Molecular Pathology, SA Pathology Women's and Children's Hospital  North Adelaide South Australia Australia"},{"name":"Adelaide Medical School University of Adelaide  Adelaide South Australia Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David","family":"Ketteridge","sequence":"additional","affiliation":[{"name":"Metabolic Unit Women's and Children's Hospital  North Adelaide South Australia Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2021,3,26]]},"reference":[{"key":"e_1_2_12_2_1","first-page":"3421","volume-title":"The Metabolic and Molecular Bases of Inherited Disease","author":"Neufeld EF","year":"2001"},{"key":"e_1_2_12_3_1","doi-asserted-by":"publisher","DOI":"10.3390\/ijms21041258"},{"key":"e_1_2_12_4_1","doi-asserted-by":"publisher","DOI":"10.1093\/clinchem\/35.3.374"},{"key":"e_1_2_12_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ymgme.2009.10.001"},{"key":"e_1_2_12_6_1","doi-asserted-by":"publisher","DOI":"10.1038\/nchembio.766"},{"key":"e_1_2_12_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0008-6215(00)87067-6"},{"key":"e_1_2_12_8_1","doi-asserted-by":"publisher","DOI":"10.1023\/A:1012763026526"},{"key":"e_1_2_12_9_1","doi-asserted-by":"publisher","DOI":"10.3390\/ijns6030073"},{"key":"e_1_2_12_10_1","doi-asserted-by":"publisher","DOI":"10.1373\/clinchem.2006.077263"},{"key":"e_1_2_12_11_1","doi-asserted-by":"publisher","DOI":"10.1021\/ac5004135"},{"key":"e_1_2_12_12_1","doi-asserted-by":"publisher","DOI":"10.1111\/cge.12927"},{"key":"e_1_2_12_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cca.2018.02.023"},{"key":"e_1_2_12_14_1","doi-asserted-by":"publisher","DOI":"10.1002\/pd.5479"},{"key":"e_1_2_12_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0021-9258(19)52451-6"},{"key":"e_1_2_12_16_1","doi-asserted-by":"publisher","DOI":"10.1016\/0009-8981(90)90339-T"},{"key":"e_1_2_12_17_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41436-018-0136-z"},{"issue":"1","key":"e_1_2_12_18_1","first-page":"49","article-title":"Prenatal diagnosis and genetic counselling of mucopolysaccharidosis type II (hunter syndrome)","volume":"18","author":"Chen CP","year":"2007","journal-title":"Genet Couns"},{"key":"e_1_2_12_19_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10545-006-0440-7"}],"container-title":["JIMD Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jmd2.12214","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/jmd2.12214","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jmd2.12214","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,8,30]],"date-time":"2023-08-30T03:41:59Z","timestamp":1693366919000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/jmd2.12214"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,3,26]]},"references-count":18,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2021,7]]}},"alternative-id":["10.1002\/jmd2.12214"],"URL":"https:\/\/doi.org\/10.1002\/jmd2.12214","archive":["Portico"],"relation":{},"ISSN":["2192-8312","2192-8312"],"issn-type":[{"type":"print","value":"2192-8312"},{"type":"electronic","value":"2192-8312"}],"subject":[],"published":{"date-parts":[[2021,3,26]]},"assertion":[{"value":"2021-01-26","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-03-17","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-03-26","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}