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Oro-facio-dental findings of rubinstein-taybi syndrome as a useful diagnostic feature.

ABSTRACT: Rubinstein-Taybi Syndrome (RTS) is a rare multiple congenital syndrome characterized by distinctive facial features, mental and growth retardation, broad thumbs and great toes. This case report describes the oro-dental manifestations, as well as, orthodontic evaluation of a 9-year-old male patient who had RTS. The remarkable oro-dental features were talon-like cingulum on maxillary central incisors, unerupted supernumerary teeth. Cone-beam computerized tomography was taken in order to identify his skeletal anomalies, bilateral cross-bite and a narrow maxilla were diagnosed. Dental treatments were completed under i.v sedation due to the patient's inability to cooperate during dental treatment. Perioparetive and postoperative courses were uneventful. Following dental treatments, orthodontic therapy was initiated with a fixed rapid maxillary expansion appliance.

SUBMITTER: Tirali RE

PROVIDER: S-EPMC3939505 | biostudies-literature | 2014 Jan

REPOSITORIES: biostudies-literature

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Oro-facio-dental findings of rubinstein-taybi syndrome as a useful diagnostic feature.

Tirali R Ebru RE Sar Cagla C Cehreli S Burcak SB

Journal of clinical and diagnostic research : JCDR 20140112 1

Rubinstein-Taybi Syndrome (RTS) is a rare multiple congenital syndrome characterized by distinctive facial features, mental and growth retardation, broad thumbs and great toes. This case report describes the oro-dental manifestations, as well as, orthodontic evaluation of a 9-year-old male patient who had RTS. The remarkable oro-dental features were talon-like cingulum on maxillary central incisors, unerupted supernumerary teeth. Cone-beam computerized tomography was taken in order to identify h ...[more]

PMID: 24596795

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Project description:Rubinstein-Taybi syndrome (RSTS) is a rare genetic disorder in humans characterized by growth and psychomotor delay, abnormal gross anatomy, and mild to severe mental retardation (Rubinstein and Taybi, Am J Dis Child 105:588-608, 1963, Hennekam et al., Am J Med Genet Suppl 6:56-64, 1990). RSTS is caused by de novo mutations in epigenetics-associated genes, including the cAMP response element-binding protein (CREBBP), the gene-encoding protein referred to as CBP, and the EP300 gene, which encodes the p300 protein, a CBP homologue. Recent studies of the epigenetic mechanisms underlying cognitive functions in mice provide direct evidence for the involvement of nuclear factors (e.g., CBP) in the control of higher cognitive functions. In fact, a role for CBP in higher cognitive function is suggested by the finding that RSTS is caused by heterozygous mutations at the CBP locus (Petrij et al., Nature 376:348-351, 1995). CBP was demonstrated to possess an intrinsic histone acetyltransferase activity (Ogryzko et al., Cell 87:953-959, 1996) that is required for CREB-mediated gene expression (Korzus et al., Science 279:703-707, 1998). The intrinsic protein acetyltransferase activity in CBP might directly destabilize promoter-bound nucleosomes, facilitating the activation of transcription. Due to the complexity of developmental abnormalities and the possible genetic compensation associated with this congenital disorder, however, it is difficult to establish a direct role for CBP in cognitive function in the adult brain. Although aspects of the clinical presentation in RSTS cases have been extensively studied, a spectrum of symptoms found in RSTS patients can be accessed only after birth, and, thus, prenatal genetic tests for this extremely rare genetic disorder are seldom considered. Even though there has been intensive research on the genetic and epigenetic function of the CREBBP gene in rodents, the etiology of this devastating congenital human disorder is largely unknown.

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Oro-facio-dental findings of rubinstein-taybi syndrome as a useful diagnostic feature.

Publications

Oro-facio-dental findings of rubinstein-taybi syndrome as a useful diagnostic feature.

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