A possible cranio-oro-facial phenotype in Cockayne syndrome. - Archive ouverte HAL Access content directly
Journal Articles Orphanet Journal of Rare Diseases Year : 2013

A possible cranio-oro-facial phenotype in Cockayne syndrome.

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Mériam Koob
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Abstract

ABSTRACT: BACKGROUND: Cockayne Syndrome CS (Type A -- CSA; or CS Type I OMIM #216400) (Type B -- CSB; or CS Type II OMIM #133540) is a rare autosomal recessive neurological disease caused by defects in DNA repair characterized by progressive cachectic dwarfism, progressive intellectual disability with cerebral leukodystrophy, microcephaly, progressive pigmentary retinopathy, sensorineural deafness photosensitivity and possibly orofacial and dental anomalies. METHODS: We studied the cranio-oro-facial status of a group of 17 CS patients from 15 families participating in the National Hospital Program for Clinical Research (PHRC) 2005 [left-pointing double angle quotation mark] Clinical and molecular study of Cockayne syndrome [right-pointing double angle quotation mark]. All patients were examined by two investigators using the Diagnosing Dental Defects Database (D[4]/phenodent) record form. RESULTS: Various oro-facial and dental anomalies were found: retrognathia; micrognathia; high- arched narrow palate; tooth crowding; hypodontia (missing permanent lateral incisor, second premolars or molars), screwdriver shaped incisors, microdontia, radiculomegaly, and enamel hypoplasia. Eruption was usually normal. Dental caries was associated with enamel defects, a high sugar/carbohydrate soft food diet, poor oral hygiene and dry mouth. Cephalometric analysis revealed mid-face hypoplasia, a small retroposed mandible and hypo-development of the skull. CONCLUSION: CS patients may have associated oro-dental features, some of which may be more frequent in CS children -- some of them being described for the first time in this paper (agenesis of second permanent molars and radiculomegaly). The high susceptibility to rampant caries is related to a combination of factors as well as enamel developmental defects. Specific attention to these anomalies may contribute to diagnosis and help plan management.
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Dates and versions

inserm-00799545 , version 1 (12-03-2013)

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Agnès Bloch-Zupan, Morgan Rousseaux, Virginie Laugel, Matthieu Schmittbuhl, Rémy Mathis, et al.. A possible cranio-oro-facial phenotype in Cockayne syndrome.. Orphanet Journal of Rare Diseases, 2013, 8 (1), pp.9. ⟨10.1186/1750-1172-8-9⟩. ⟨inserm-00799545⟩
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