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Hum Mol Genet. 2005 Jan 1;14(1):1-5. Epub 2004 Nov 3.

Recessive mutations in PTHR1 cause contrasting skeletal dysplasias in Eiken and Blomstrand syndromes.

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  • 1Genetics of Infectious and Autoimmune Diseases, Pasteur Institute, INSERM E102, Paris, France.

Abstract

Eiken syndrome is a rare autosomal recessive skeletal dysplasia. We identified a truncation mutation in the C-terminal cytoplasmic tail of the parathyroid hormone (PTH)/PTH-related peptide (PTHrP) type 1 receptor (PTHR1) gene as the cause of this syndrome. Eiken syndrome differs from Jansen and Blomstrand chondrodysplasia and from enchondromatosis, which are all syndromes caused by PTHR1 mutations. Notably, the skeletal features are opposite to those in Blomstrand chondrodysplasia, which is caused by inactivating recessive mutations in PTHR1. To our knowledge, this is the first description of opposite manifestations resulting from distinct recessive mutations in the same gene.

PMID:
15525660
[PubMed - indexed for MEDLINE]
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