Comprehensive screening of eight known causative genes in congenital hypothyroidism with gland-in-situ
| Autor: | Nicholas, Adeline K., Serra, Eva G., Cangül, Hakan, Alyaarubi, Saif, Ullah, Irfan, Schoenmakers, Erik, Deeb, Asma, Habeb, Abdelhadi M., Almaghamsi, Mohammad, Peters, Catherine, Nathwani, Nisha, Aycan, Zehra, Bober, Ece, Dattani, Mehul, Shenoy, Savitha, Murray, Philip G., Babiker, Amir, Willemsen, Ruben, Thankamony, Ajay, Lyons, Greta, Irwin, Rachael, Padidela, Raja, Tharian, Kavitha, Davies, Justin H., Puthi, Vijith, Park, Soo-Mi, Massoud, Ahmed F., Gregory, John W., Albanese, Assunta, Pease-Gevers, Evelien, Martin, Howard, Brugger, Kim, Maher, Eamonn R., Chatterjee, V. Krishna K., Anderson, Carl A., Schoenmakers, Nadia |
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| Přispěvatelé: | Uludağ Üniversitesi/Tıp Fakültesi/Çocuk Sağlığı ve Hastalıkları Anabilim Dalı., Sağlam, Halil, C-7392-2019 |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
TPO protein
TG gene Iodide peroxidase Dual Oxidases Congenital Hypothyroidism Oxidoreductases IYD gene Autoantigens Gene Receptor gene Thyroglobulin gene Computer model Phenomics DUOX2 gene Endocrinology & metabolism Priority journal Allele Iodide organification defects Goiter Sequence analysis TSHR gene Pedigree Phenotype Iron-binding proteins Cohort analysis Human TPO gene Clinical article Population DNA sequence Thyrotropin receptor Guidelines Thyroglobulin Article Autoantigen Next generation sequencing Genetic screening Genetics Humans Pathogenicity Genetic variation Iron binding protein Gene mutation Receptors thyrotropin SLC5A5 gene Congenital hypothyroidism Japanese patients DUOX2 mutations Mutation Genetic association SLC26A4 gene DUOXA2 gene Dyshormonogenesis |
| Popis: | Context: Lower TSH screening cutoffs have doubled the ascertainment of congenital hypothyroidism (CH), particularly cases with a eutopically located gland-in-situ (GIS). Although mutations in known dyshormonogenesis genes or TSHR underlie some cases of CH with GIS, systematic screening of these eight genes has not previously been undertaken. Objective: Our objective was to evaluate the contribution and molecular spectrum of mutations in eight known causative genes (TG, TPO, DUOX2, DUOXA2, SLC5A5, SLC26A4, IYD, and TSHR) in CH cases with GIS. Patients, Design, and Setting:We screened 49 CH cases with GIS from 34 ethnically diverse families, using next-generation sequencing. Pathogenicity of novel mutations was assessed in silica. Results: Twenty-nine cases harbored likely disease-causing mutations. Monogenic defects (19 cases) most commonly involved TG (12), TPO (four), DUOX2 (two), and TSHR (one). Ten cases harbored triallelic (digenic) mutations: TG and TPO (one); SLC26A4 and TPO (three), and DUOX2 and TG (six cases). Novel variants overall included 15 TG, six TPO, and three DUOX2 mutations. Genetic basis was not ascertained in 20 patients, including 14 familial cases. Conclusions: The etiology of CH with GIS remains elusive, with only 59% attributable to mutations in TSHR or known dyshormonogenesis-associated genes in a cohort enriched for familial cases. Biallelic TG or TPO mutations most commonly underlie severe CH. Triallelic defects are frequent, mandating future segregation studies in larger kindreds to assess their contribution to variable phenotype. A high proportion (-41%) of unsolved or ambiguous cases suggests novel genetic etiologies that remain to be elucidated. Wellcome Trust European Commission - 100585/Z/12/Z - 095564/Z/11/Z - 098051 - WT091310 UK Research & Innovation (UKRI) Medical Research Council UK (MRC) - MC_UU_12012/5/B European Commission National Institute for Health Research (NIHR) - (NF-SI-0514-10176) NIHR (CL-2012-06-005) |
| Databáze: | OpenAIRE |
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