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Kopajtich, R. ; Murayama, K.* ; Janecke, A.R.* ; Haack, T.B. ; Breuer, M.* ; Knisely, A.S.* ; Harting, I.* ; Ohashi, T.* ; Okazaki, Y.* ; Watanabe, D.* ; Tokuzawa, Y.* ; Kotzaeridou, U.* ; Kolker, S.* ; Sauer, S.* ; Carl, M.* ; Straub, S.* ; Entenmann, A.* ; Gizewski, E.* ; Feichtinger, R.G.* ; Mayr, J.A.* ; Lackner, K.J.* ; Strom, T.M. ; Meitinger, T. ; Müller, T.* ; Ohtake, A.* ; Hoffmann, G.F.* ; Prokisch, H. ; Staufner, C.*

Biallelic IARS mutations cause growth retardation with prenatal onset, intellectual disability, muscular hypotonia, and infantile hepatopathy.

Am. J. Hum. Genet. 99, 414-422 (2016)
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tRNA synthetase deficiencies are a growing group of genetic diseases associated with tissue-specific, mostly neurological, phenotypes. In cattle, cytosolic isoleucyl-tRNA synthetase (IARS) missense mutations cause hereditary weak calf syndrome. Exome sequencing in three unrelated individuals with severe prenatal-onset growth retardation, intellectual disability, and muscular hypotonia revealed biallelic mutations in IARS. Studies in yeast confirmed the pathogenicity of identified mutations. Two of the individuals had infantile hepatopathy with fibrosis and steatosis, leading in one to liver failure in the course of infections. Zinc deficiency was present in all affected individuals and supplementation with zinc showed a beneficial effect on growth in one.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords Transfer-rna Synthetase; Export Pump Deficiency; Acute Liver-failure; Cerebellar Atrophy; Human-disease; Zinc Ion; Zebrafish; Children; Reveals; Lars
ISSN (print) / ISBN 0002-9297
e-ISSN 1537-6605
Journal American Journal of Human Genetics, The
Quellenangaben Volume: 99, Issue: 2, Pages: 414-422 Article Number: , Supplement: ,
Publisher Elsevier
Publishing Place New York, NY
Non-patent literature Publications
Reviewing status Peer reviewed
Institute(s) Institute of Human Genetics (IHG)