Severe neurologic manifestations from cervical spine instability in spondylo-megaepiphyseal-metaphyseal dysplasia

dc.creatorSimon, M
dc.creatorCampos-Xavier, AB
dc.creatorMittaz-Crettol, L
dc.creatorValadares, ER
dc.creatorCarvalho, D
dc.creatorSpeck-Martins, CE
dc.creatorNampoothiri, S
dc.creatorAlanay, Y
dc.creatorMihci, E
dc.creatorvan Bever, Y
dc.creatorGarcia-Segarra, N
dc.creatorCavalcanti, D
dc.creatorMortier, G
dc.creatorBonafe, L
dc.creatorSuperti-Furga, A
dc.date2012
dc.dateAUG 15
dc.date2014-11-14T04:51:42Z
dc.date2015-11-26T17:13:19Z
dc.date2014-11-14T04:51:42Z
dc.date2015-11-26T17:13:19Z
dc.date.accessioned2018-03-29T00:01:41Z
dc.date.available2018-03-29T00:01:41Z
dc.identifierAmerican Journal Of Medical Genetics Part C-seminars In Medical Genetics. Wiley-blackwell, v. 160C, n. 3, n. 230, n. 237, 2012.
dc.identifier1552-4868
dc.identifierWOS:000306668500009
dc.identifier10.1002/ajmg.c.31339
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/75694
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/75694
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/75694
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1281541
dc.descriptionSpondylo-megaepiphyseal-metaphyseal dysplasia (SMMD; OMIM 613330) is a dysostosis/dysplasia caused by recessive mutations in the homeobox-containing gene, NKX3-2 (formerly known as BAPX1). Because of the rarity of the condition, its diagnostic features and natural course are not well known. We describe clinical and radiographic findings in six patients (five of which with homozygous mutations in the NKX3-2 gene) and highlight the unusual and severe changes in the cervical spine and the neurologic complications. In individuals with SMMD, the trunk and the neck are short, while the limbs, fingers and toes are disproportionately long. Radiographs show a severe ossification delay of the vertebral bodies with sagittal and coronal clefts, missing ossification of the pubic bones, large round balloon-like epiphyses of the long bones, and presence of multiple pseudoepiphyses at all metacarpals and phalanges. Reduced or absent ossification of the cervical vertebrae leads to cervical instability with anterior or posterior kinking of the cervical spine (swan neck-like deformity, kyknodysostosis). As a result of the cervical spine instability or deformation, five of six patients in our series suffered cervical cord injury that manifested clinically as limb spasticity. Although the number of individuals observed is small, the high incidence of cervical spine deformation in SMMD is unique among skeletal dysplasias. Early diagnosis of SMMD by recognition of the radiographic pattern might prevent of the neurologic complications via prophylactic cervical spine stabilization. (C) 2012 Wiley Periodicals, Inc.
dc.description160C
dc.description3
dc.descriptionSI
dc.description230
dc.description237
dc.descriptionBrazil-Switzerland Joint Research Project [BSJRP 2012-2014]
dc.descriptionLeenaards Foundation
dc.descriptionFaculte de Biologie et Medicine (FBM) of the Lausanne University
dc.descriptionLeenaards Foundation in Lausanne
dc.descriptionBrazil-Switzerland Joint Research Project [BSJRP 2012-2014]
dc.languageen
dc.publisherWiley-blackwell
dc.publisherHoboken
dc.publisherEUA
dc.relationAmerican Journal Of Medical Genetics Part C-seminars In Medical Genetics
dc.relationAm. J. Med. Genet. C
dc.rightsfechado
dc.rightshttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dc.sourceWeb of Science
dc.subjectspondylo-megaepiphyseal-metaphyseal dysplasia
dc.subjectSMMD
dc.subjectNKX3-2
dc.subjectBone Dysplasia
dc.titleSevere neurologic manifestations from cervical spine instability in spondylo-megaepiphyseal-metaphyseal dysplasia
dc.typeArtículos de revistas


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