Rubinstein-Taybi Syndrome: spectrum of CREBBP mutations in Italian patients, BMC Medical Genetics
Por um escritor misterioso
Last updated 05 agosto 2024
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Background Rubinstein-Taybi Syndrome (RSTS, MIM 180849) is a rare congenital disorder characterized by mental and growth retardation, broad and duplicated distal phalanges of thumbs and halluces, facial dysmorphisms and increased risk of tumors. RSTS is caused by chromosomal rearrangements and point mutations in one copy of the CREB-binding protein gene (CREBBP or CBP) in 16p13.3. To date mutations in CREBBP have been reported in 56.6% of RSTS patients and an average figure of 10% has ascribed to deletions. Methods Our study is based on the mutation analysis of CREBBP in 31 Italian RSTS patients using segregation analysis of intragenic microsatellites, BAC FISH and direct sequencing of PCR and RT-PCR fragments. Results We identified a total of five deletions, two of the entire gene and three, all in a mosaic condition, involving either the 5' or the 3' region. By direct sequencing a total of 14 de novo mutations were identified: 10 truncating (5 frameshift and 5 nonsense), one splice site, and three novel missense mutations. Two of the latter affect the HAT domain, while one maps within the conserved nuclear receptor binding of (aa 1–170) and will probably destroy a Nuclear Localization Signal. Identification of the p.Asn1978Ser in the healthy mother of a patient also carrying a de novo frameshift mutation, questions the pathogenetic significance of the missense change reported as recurrent mutation. Thirteen additional polymorphisms, three as of yet unreported, were also detected. Conclusion A high detection rate (61.3%) of mutations is confirmed by this Italian study which also attests one of the highest microdeletion rate (16%) documented so far.
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Rubinstein-Taybi Syndrome and Epigenetic Alterations. - Abstract - Europe PMC
![Rubinstein-Taybi Syndrome: spectrum of CREBBP mutations in Italian patients, BMC Medical Genetics](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fejhg.2016.14/MediaObjects/41431_2016_Article_BFejhg201614_Fig1_HTML.jpg)
Mosaic CREBBP mutation causes overlapping clinical features of Rubinstein– Taybi and Filippi syndromes
![Rubinstein-Taybi Syndrome: spectrum of CREBBP mutations in Italian patients, BMC Medical Genetics](https://onlinelibrary.wiley.com/cms/asset/8b146ed6-a97c-4eea-a1a0-6df5c4059403/ajmga37800-fig-0003-m.jpg)
CREBBP mutations in individuals without Rubinstein–Taybi syndrome phenotype - Menke - 2016 - American Journal of Medical Genetics Part A - Wiley Online Library
![Rubinstein-Taybi Syndrome: spectrum of CREBBP mutations in Italian patients, BMC Medical Genetics](https://media.springernature.com/m685/springer-static/image/art%3A10.1007%2Fs00439-015-1542-9/MediaObjects/439_2015_1542_Fig2_HTML.gif)
Characterization of 14 novel deletions underlying Rubinstein–Taybi syndrome: an update of the CREBBP deletion repertoire
![Rubinstein-Taybi Syndrome: spectrum of CREBBP mutations in Italian patients, BMC Medical Genetics](https://i1.rgstatic.net/publication/235714443_Novel_cAMP_binding_protein-BP_CREBBP_mutation_in_a_girl_with_Rubinstein-Taybi_syndrome_GH_deficiency_Arnold_Chiari_malformation_and_pituitary_hypoplasia/links/02e7e52bc559ecf14e000000/largepreview.png)
PDF) Novel cAMP binding protein-BP (CREBBP) mutation in a girl with Rubinstein-Taybi syndrome, GH deficiency, Arnold Chiari malformation and pituitary hypoplasia
![Rubinstein-Taybi Syndrome: spectrum of CREBBP mutations in Italian patients, BMC Medical Genetics](https://onlinelibrary.wiley.com/cms/asset/2deacd6b-63b2-499e-b632-825b2fd41505/ajmga37800-fig-0001-m.jpg)
CREBBP mutations in individuals without Rubinstein–Taybi syndrome phenotype - Menke - 2016 - American Journal of Medical Genetics Part A - Wiley Online Library
![Rubinstein-Taybi Syndrome: spectrum of CREBBP mutations in Italian patients, BMC Medical Genetics](https://media.springernature.com/lw685/springer-static/image/art%3A10.1186%2Fs12920-022-01335-4/MediaObjects/12920_2022_1335_Fig1_HTML.jpg)
A novel CREBBP mutation and its phenotype in a case of Rubinstein–Taybi syndrome, BMC Medical Genomics
![Rubinstein-Taybi Syndrome: spectrum of CREBBP mutations in Italian patients, BMC Medical Genetics](https://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1471-2350-7-77/MediaObjects/12881_2006_Article_185_Fig4_HTML.jpg)
Rubinstein-Taybi Syndrome: spectrum of CREBBP mutations in Italian patients, BMC Medical Genetics
![Rubinstein-Taybi Syndrome: spectrum of CREBBP mutations in Italian patients, BMC Medical Genetics](https://www.mdpi.com/genes/genes-12-00968/article_deploy/html/images/genes-12-00968-g003-550.jpg)
Genes, Free Full-Text
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Rubinstein-Taybi Syndrome: spectrum of CREBBP mutations in Italian patients, BMC Medical Genetics
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High frequency of mosaic CREBBP deletions in Rubinstein–Taybi syndrome patients and mapping of somatic and germ-line breakpoints - ScienceDirect
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