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Title: The most 5' truncating homozygous mutation of WNT1 in siblings with osteogenesis imperfecta with a variable degree of brain anomalies: A case report
Authors: Chulaluck Kuptanon
Chalurmpon Srichomthong
Apiruk Sangsin
Dool Kovitvanitcha
Kanya Suphapeetiporn
Vorasuk Shotelersuk
Keywords: Biochemistry, Genetics and Molecular Biology
Issue Date: 16-Jul-2018
Abstract: © 2018 The Author(s). Background: WNT1 mutations cause bone fragility as well as brain anomalies. There are some reported cases of WNT1 mutations with normal cognition. Genotype and phenotype correlation of WNT1 mutations has not been established. Case presentation: Here we present two female siblings with osteogenesis imperfecta (OI) born to a consanguineous couple. Both sustained severe bone deformities. However, only the younger had severe brain anomalies resulting in an early death from pneumonia, while the older had normal intellectual development. Next generation sequencing showed a homozygous mutation, c.6delG, p.Leu3Serfs*36 in WNT1. To our knowledge, it is the most 5' truncating mutation to date. Conclusion: This report emphasizes the intrafamilial variability of brain anomalies found in this OI type and suggests that WNT1 may not be necessary for normal human cognitive development.
ISSN: 14712350
Appears in Collections:CMUL: Journal Articles

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