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dc.contributor.authorHackett, A.en
dc.contributor.authorTarpey, P.en
dc.contributor.authorLicata, A.en
dc.contributor.authorCox, J.en
dc.contributor.authorWhibley, A.en
dc.contributor.authorBoyle, J.en
dc.contributor.authorRogers, C.en
dc.contributor.authorGrigg, J.en
dc.contributor.authorPartington, M.en
dc.contributor.authorStevenson, R.en
dc.contributor.authorTolmie, J.en
dc.contributor.authorYates, J.en
dc.contributor.authorTurner, G.en
dc.contributor.authorWilson, M.en
dc.contributor.authorFutreal, P.en
dc.contributor.authorCorbett, M.en
dc.contributor.authorShaw, M.en
dc.contributor.authorGecz, J.en
dc.contributor.authorRaymond, F.en
dc.contributor.authorStratton, M.en
dc.identifier.citationEuropean Journal of Human Genetics, 2010; 18(5):544-552en
dc.description.abstractMutations of the calcium/calmodulin-dependent serine protein kinase (CASK) gene have recently been associated with X-linked mental retardation (XLMR) with microcephaly, optic atrophy and brainstem and cerebellar hypoplasia, as well as with an X-linked syndrome having some FG-like features. Our group has recently identified four male probands from 358 probable XLMR families with missense mutations (p.Y268H, p.P396S, p.D710G and p.W919R) in the CASK gene. Congenital nystagmus, a rare and striking feature, was present in two of these families. We screened a further 45 probands with either nystagmus or microcephaly and mental retardation (MR), and identified two further mutations, a missense mutation (p.Y728C) and a splice mutation (c.2521-2A>T) in two small families with nystagmus and MR. Detailed clinical examinations of all six families, including an ophthalmological review in four families, were undertaken to further characterise the phenotype. We report on the clinical features of 24 individuals, mostly male, from six families with CASK mutations. The phenotype was variable, ranging from non-syndromic mild MR to severe MR associated with microcephaly and dysmorphic facial features. Carrier females were variably affected. Congenital nystagmus was found in members of four of the families. Our findings reinforce the CASK gene as a relatively frequent cause of XLMR in females and males. We further define the phenotypic spectrum and demonstrate that affected males with missense mutations or in-frame deletions in CASK are frequently associated with congenital nystagmus and XLMR, a striking feature not previously reported.en
dc.description.statementofresponsibilityAnna Hackett, Patrick S Tarpey, Andrea Licata, James Cox, Annabel Whibley, Jackie Boyle, Carolyn Rogers, John Grigg, Michael Partington, Roger E Stevenson, John Tolmie, John RW Yates, Gillian Turner, Meredith Wilson, Andrew P Futreal, Mark Corbett, Marie Shaw, Jozef Gecz, F Lucy Raymond, Michael R Stratton, Charles E Schwartz and Fatima E Abidien
dc.publisherNature Publishing Groupen
dc.subjectCASK gene; XLMR; intellectual disability; congenital nystagmusen
dc.titleCASK mutations are frequent in males and cause X-linked nystagmus and variable XLMR phenotypesen
dc.typeJournal articleen
pubs.library.collectionPaediatrics publicationsen
dc.identifier.orcidCorbett, M. [0000-0001-9298-3072]en
dc.identifier.orcidShaw, M. [0000-0002-5060-190X]en
dc.identifier.orcidGecz, J. [0000-0002-7884-6861]en
Appears in Collections:Paediatrics publications

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