{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,6]],"date-time":"2026-06-06T07:21:05Z","timestamp":1780730465652,"version":"3.54.1"},"reference-count":16,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2022,4,14]],"date-time":"2022-04-14T00:00:00Z","timestamp":1649894400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Genes"],"abstract":"<jats:p>Dystroglycanopathies are a group of congenital muscular dystrophies (CMDs) that include a broad phenotypic spectrum ranging from late-onset limb-girdle muscular dystrophy to severe muscle\u2013eye\u2013brain disease, Walker\u2013Warburg syndrome, and Fukuyama congenital muscular dystrophy. In addition to clinical heterogeneity, CMDs are characterized by genetic heterogeneity. To date, 18 genes have been associated with CMDs. One of them is B3GALNT2, which encodes the \u03b2-1,3-N-acetylgalactosaminyltransferase 2 that glycosylates \u03b1-dystroglycan. In this study, using exome sequencing, we identify a homozygous frameshift variant in B3GALNT2 due to a mixed uniparental disomy of chromosome 1 in a 7-year-old girl with global developmental delay, severely delayed active language development, and autism spectrum disorder but without any symptoms of muscular dystrophy. In addition to this case, we also provide an overview of all previously reported cases, further expanding the phenotypic spectrum.<\/jats:p>","DOI":"10.3390\/genes13040694","type":"journal-article","created":{"date-parts":[[2022,4,14]],"date-time":"2022-04-14T21:44:06Z","timestamp":1649972646000},"page":"694","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Expanding the Phenotype of B3GALNT2-Related Disorders"],"prefix":"10.3390","volume":"13","author":[{"given":"Erika","family":"D\u2019haenens","sequence":"first","affiliation":[{"name":"Center for Medical Genetics, Ghent University Hospital, 9000 Ghent, Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sarah","family":"Vergult","sequence":"additional","affiliation":[{"name":"Center for Medical Genetics, Ghent University Hospital, 9000 Ghent, Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bj\u00f6rn","family":"Menten","sequence":"additional","affiliation":[{"name":"Center for Medical Genetics, Ghent University Hospital, 9000 Ghent, Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Annelies","family":"Dheedene","sequence":"additional","affiliation":[{"name":"Center for Medical Genetics, Ghent University Hospital, 9000 Ghent, Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2024-0485","authenticated-orcid":false,"given":"R. Frank","family":"Kooy","sequence":"additional","affiliation":[{"name":"Center for Medical Genetics, Antwerp University Hospital, 2650 Edegem, Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9743-4205","authenticated-orcid":false,"given":"Bert","family":"Callewaert","sequence":"additional","affiliation":[{"name":"Center for Medical Genetics, Ghent University Hospital, 9000 Ghent, Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,4,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1007\/s12035-009-8089-5","article-title":"The roles of the dystrophin-associated glycoprotein complex at the synapse","volume":"41","author":"Pilgram","year":"2010","journal-title":"Mol. 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