Published in:
Open Access
01-12-2013 | Letter to the Editor
Deficiency for the ER-stress transducer OASIS causes severe recessive osteogenesis imperfecta in humans
Authors:
Sofie Symoens, Fransiska Malfait, Sanne D’hondt, Bert Callewaert, Annelies Dheedene, Wouter Steyaert, Hans Peter Bächinger, Anne De Paepe, Hulya Kayserili, Paul J Coucke
Published in:
Orphanet Journal of Rare Diseases
|
Issue 1/2013
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Abstract
Osteogenesis imperfecta (OI) is a clinically and genetically heterogeneous brittle bone disorder. Whereas dominant OI is mostly due to heterozygous mutations in either COL1A1 or COL1A2, encoding type I procollagen, recessive OI is caused by biallelic mutations in genes encoding proteins involved in type I procollagen processing or chaperoning. Hitherto, some OI cases remain molecularly unexplained. We detected a homozygous genomic deletion of CREB3L1 in a family with severe OI. CREB3L1 encodes OASIS, an endoplasmic reticulum-stress transducer that regulates type I procollagen expression during murine bone formation. This is the first report linking CREB3L1 to human recessive OI, thereby expanding the OI gene spectrum.