Severe ipsilateral musculoskeletal involvement in a Cornelia de Lange patient with a novel NIPBL mutation / Carolina Baquero Montoya  

Público ISBD Título : Severe ipsilateral musculoskeletal involvement in a Cornelia de Lange patient with a novel NIPBL mutation Tipo de documento : documento electrónico Autores : Carolina Baquero Montoya, Fecha de publicación : 2014 Títulos uniformes : European Journal of Medical Genetics Idioma : Inglés (eng) Palabras clave : Cornelia de Lange syndrome  CdLS  HEAT repeat  ipsilateral  musculoskeletal involvement  NIPBL mutation  BHLHA9 duplication  exome sequencing Resumen : Cornelia de Lange Syndrome (CdLS) is a congenital autosomal dominant ( NIPBL , SMC3 and RAD21 ) or X-linked ( SMC1A and HDAC8 ) disorder characterized by facial dysmorphism, pre and postnatal growth retardation, developmental delay and/or intellectual disability, and multiorgan involvement. Musculoskeletal malformations are usually bilateral and affect mainly the upper limbs; the range goes from brachyclinodactyly to severe reduction defects. Instead lower extremities are usually less and mildly involved. Here, we report on a 3-year-old Senegalese boy with typical craniofacial CdLS features, pre and postnatal growth retardation, atrial septal defect, developmental delay and right ipsilateral limb malformations, consistent with oligodactyly of the 3rd and 4th fingers, tibial agenesis and fibula hypoplasia. Exome sequencing and Sanger sequencing showed a novel missense mutation in NIPBL gene (c.6647A>G; p.(Tyr2216Cys)), which affects a conserved residue located within NIPBL HEAT repeat elements. Pyrosequencing analysis of NIPBL gene, disclosed similar levels of wild-type and mutated alleles in DNA and RNA samples from all tissues analyzed (oral mucosa epithelial cells, peripheral blood leukocytes and fibroblasts). These findings indicated the absence of somatic mosaicism, despite of the segmental asymmetry of the limbs, and confirmed biallelic expression for NIPBL transcripts, respectively. Additionally, conditions like Split-hand/foot malformation with long-bone deficiency secondary to duplication of BHLHA9 gene have been ruled out by the array-CGH and MLPA analysis. To our knowledge, this is the first CdLS patient described with major ipsilateral malformations of both the upper and lower extremities, that even though this finding could be due to a random event, expands the spectrum of limb reduction defects in CdLS. Mención de responsabilidad : Carolina Baquero-Montoya, María-Concepción Gil-Rodríguez, María Hernández-Marcos, María-Esperanza Teresa-Rodrigo, Alicia Vicente-Gabas, María-Luisa Bernal, Cesar-Horacio Casale, Gloria Bueno-Lozano, Inés Bueno-Martínez, Ethel Queralt, Olaya Villa, Cristina Hernando-Davalillo, Lluís Armengol, Paulino Gómez-Puertas, Beatriz Puisac, Angelo Selicorni, Feliciano J Ramos, Juan Pié Referencia : Eur J Med Genet. 2014 Sep;57(9):503-9. DOI (Digital Object Identifier) : 10.1016/j.ejmg.2014.05.006 PMID : 24874887 En línea : https://linkinghub.elsevier.com/retrieve/pii/S0041-1345(12)01403-0 Enlace permanente : https://hospitalpablotobon.cloudbiteca.com/pmb/opac_css/index.php?lvl=notice_display&id=3795 Severe ipsilateral musculoskeletal involvement in a Cornelia de Lange patient with a novel NIPBL mutation [documento electrónico] / Carolina Baquero Montoya,  . - 2014. Obra : European Journal of Medical Genetics Idioma : Inglés (eng) Palabras clave : Cornelia de Lange syndrome  CdLS  HEAT repeat  ipsilateral  musculoskeletal involvement  NIPBL mutation  BHLHA9 duplication  exome sequencing Resumen : Cornelia de Lange Syndrome (CdLS) is a congenital autosomal dominant ( NIPBL , SMC3 and RAD21 ) or X-linked ( SMC1A and HDAC8 ) disorder characterized by facial dysmorphism, pre and postnatal growth retardation, developmental delay and/or intellectual disability, and multiorgan involvement. Musculoskeletal malformations are usually bilateral and affect mainly the upper limbs; the range goes from brachyclinodactyly to severe reduction defects. Instead lower extremities are usually less and mildly involved. Here, we report on a 3-year-old Senegalese boy with typical craniofacial CdLS features, pre and postnatal growth retardation, atrial septal defect, developmental delay and right ipsilateral limb malformations, consistent with oligodactyly of the 3rd and 4th fingers, tibial agenesis and fibula hypoplasia. Exome sequencing and Sanger sequencing showed a novel missense mutation in NIPBL gene (c.6647A>G; p.(Tyr2216Cys)), which affects a conserved residue located within NIPBL HEAT repeat elements. Pyrosequencing analysis of NIPBL gene, disclosed similar levels of wild-type and mutated alleles in DNA and RNA samples from all tissues analyzed (oral mucosa epithelial cells, peripheral blood leukocytes and fibroblasts). These findings indicated the absence of somatic mosaicism, despite of the segmental asymmetry of the limbs, and confirmed biallelic expression for NIPBL transcripts, respectively. Additionally, conditions like Split-hand/foot malformation with long-bone deficiency secondary to duplication of BHLHA9 gene have been ruled out by the array-CGH and MLPA analysis. To our knowledge, this is the first CdLS patient described with major ipsilateral malformations of both the upper and lower extremities, that even though this finding could be due to a random event, expands the spectrum of limb reduction defects in CdLS. Mención de responsabilidad : Carolina Baquero-Montoya, María-Concepción Gil-Rodríguez, María Hernández-Marcos, María-Esperanza Teresa-Rodrigo, Alicia Vicente-Gabas, María-Luisa Bernal, Cesar-Horacio Casale, Gloria Bueno-Lozano, Inés Bueno-Martínez, Ethel Queralt, Olaya Villa, Cristina Hernando-Davalillo, Lluís Armengol, Paulino Gómez-Puertas, Beatriz Puisac, Angelo Selicorni, Feliciano J Ramos, Juan Pié Referencia : Eur J Med Genet. 2014 Sep;57(9):503-9. DOI (Digital Object Identifier) : 10.1016/j.ejmg.2014.05.006 PMID : 24874887 En línea : https://linkinghub.elsevier.com/retrieve/pii/S0041-1345(12)01403-0 Enlace permanente : https://hospitalpablotobon.cloudbiteca.com/pmb/opac_css/index.php?lvl=notice_display&id=3795

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