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Pascual‐Alonso A, Blasco L, Vidal S, Gean E, Rubio P, O'Callaghan M, Martínez‐Monseny AF, Castells AA, Xiol C, Català V, Brandi N, Pacheco P, Ros C, Campo M, Guillén E, Ibañez S, Sánchez MJ, Lapunzina P, Nevado J, Santos F, Lloveras E, Ortigoza‐Escobar JD, Tejada MI, Maortua H, Martínez F, Orellana C, Roselló M, Mesas MA, Obón M, Plaja A, Fernández‐Ramos JA, Tizzano E, Marín R, Peña‐Segura JL, Alcántara S, Armstrong J. Front Cover. Clin Genet 2020. [DOI: 10.1111/cge.13733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Laura Blasco
- Fundación San Juan de DiosServicio de Medicina Genética y Molecular Barcelona Spain
| | - Silvia Vidal
- Fundación San Juan de DiosServicio de Medicina Genética y Molecular Barcelona Spain
| | - Esther Gean
- Departamento de Medicina Genética y MolecularHospital Universitario San Juan de Dios Barcelona Spain
| | - Patricia Rubio
- Departamento de Medicina Genética y MolecularHospital Universitario San Juan de Dios Barcelona Spain
| | - Mar O'Callaghan
- Departamento de Neurología PediátricaHospital Universitario San Juan de Dios Barcelona Spain
| | | | - Alba Aina Castells
- Fundación San Juan de DiosServicio de Medicina Genética y Molecular Barcelona Spain
- Neural Development Lab, Departament de Patologia i Terapèutica Experimental, Institut de NeurociènciesUniversitat de Barcelona, IDIBELL, l'Hospitalet de Llobregat Barcelona Spain
| | - Clara Xiol
- Fundación San Juan de DiosServicio de Medicina Genética y Molecular Barcelona Spain
| | - Vicenç Català
- Unitad de Biología Celular y Genética Médica, Departament of BCFyIUniversidad Autónoma de Barcelona Barcelona Spain
| | - Nuria Brandi
- Servicio de Medicina Genètica i MolecularHospital Universitario San Juan de Dios Barcelona Spain
| | - Paola Pacheco
- Servicio de Medicina Genètica i MolecularHospital Universitario San Juan de Dios Barcelona Spain
| | - Carlota Ros
- Servicio de Medicina Genètica i MolecularHospital Universitario San Juan de Dios Barcelona Spain
| | - Miguel Campo
- Pediatrics, Genetic EpidemiologyHospital Valle Hebrón Barcelona Spain
| | - Encarna Guillén
- Unidad de GenéticaHospital Virgen de la Arrixaca Murcia Spain
| | - Salva Ibañez
- Unidad de GenéticaHospital Virgen de la Arrixaca Murcia Spain
| | | | - Pablo Lapunzina
- Instituto de Genética Médica y MolecularHospital Universitario La Paz Madrid Spain
- CIBERER (Biomedical Network Research Center for Rare Diseases)Instituto de Salud Carlos III Madrid Spain
| | - Julián Nevado
- Instituto de Genética Médica y MolecularHospital Universitario La Paz Madrid Spain
- CIBERER (Biomedical Network Research Center for Rare Diseases)Instituto de Salud Carlos III Madrid Spain
| | - Fernando Santos
- Instituto de Genética Médica y MolecularHospital Universitario La Paz Madrid Spain
| | | | | | - María I. Tejada
- CIBERER (Biomedical Network Research Center for Rare Diseases)Instituto de Salud Carlos III Madrid Spain
- Laboratorio de Genética Molecular, Servicio de Genética, Instituto de Investigación Sanitaria BiocrucesHospital Universitario de Cruces Barakaldo Spain
| | - Hiart Maortua
- CIBERER (Biomedical Network Research Center for Rare Diseases)Instituto de Salud Carlos III Madrid Spain
- Laboratorio de Genética Molecular, Servicio de Genética, Instituto de Investigación Sanitaria BiocrucesHospital Universitario de Cruces Barakaldo Spain
| | - Francisco Martínez
- Unidad de GenéticaHospital Universitario y Politécnico La Fe Valencia Spain
| | - Carmen Orellana
- Unidad de GenéticaHospital Universitario y Politécnico La Fe Valencia Spain
| | - Mónica Roselló
- Unidad de GenéticaHospital Universitario y Politécnico La Fe Valencia Spain
| | | | - María Obón
- Area de Genètica Clínica i Consell GenèticLaboratoris ICS Girona Spain
| | - Alberto Plaja
- Institut de Recerca (VHIR), Universitat Autònoma de BarcelonaHospital Universitari Vall d'Hebron Barcelona Spain
| | | | - Eduardo Tizzano
- Area Genética Clínica y MolecularHospital Universitari Vall d'Hebron Barcelona Spain
| | - Rosario Marín
- Hospital Universitario Puerta del Mar Unidad de Genética Cádiz Spain
| | | | - Soledad Alcántara
- Neural Development Lab, Departament de Patologia i Terapèutica Experimental, Institut de NeurociènciesUniversitat de Barcelona, IDIBELL, l'Hospitalet de Llobregat Barcelona Spain
| | - Judith Armstrong
- Servicio de Medicina Genètica i MolecularHospital Universitario San Juan de Dios Barcelona Spain
- CIBERER (Biomedical Network Research Center for Rare Diseases)Instituto de Salud Carlos III Madrid Spain
- Institut de Recerca PediàtricaHospital Sant Joan de Déu Barcelona Spain
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Pascual-Alonso A, Blasco L, Vidal S, Gean E, Rubio P, O'Callaghan M, Martínez-Monseny AF, Castells AA, Xiol C, Català V, Brandi N, Pacheco P, Ros C, Del Campo M, Guillén E, Ibañez S, Sánchez MJ, Lapunzina P, Nevado J, Santos F, Lloveras E, Ortigoza-Escobar JD, Tejada MI, Maortua H, Martínez F, Orellana C, Roselló M, Mesas MA, Obón M, Plaja A, Fernández-Ramos JA, Tizzano E, Marín R, Peña-Segura JL, Alcántara S, Armstrong J. Molecular characterization of Spanish patients with MECP2 duplication syndrome. Clin Genet 2020; 97:610-620. [PMID: 32043567 DOI: 10.1111/cge.13718] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 02/04/2020] [Accepted: 02/05/2020] [Indexed: 12/16/2022]
Abstract
MECP2 duplication syndrome (MDS) is an X-linked neurodevelopmental disorder characterized by a severe to profound intellectual disability, early onset hypotonia and diverse psycho-motor and behavioural features. To date, fewer than 200 cases have been published. We report the clinical and molecular characterization of a Spanish MDS cohort that included 19 boys and 2 girls. Clinical suspicions were confirmed by array comparative genomic hybridization and multiplex ligation-dependent probe amplification (MLPA). Using, a custom in-house MLPA assay, we performed a thorough study of the minimal duplicated region, from which we concluded a complete duplication of both MECP2 and IRAK1 was necessary for a correct MDS diagnosis, as patients with partial MECP2 duplications lacked some typical clinical traits present in other MDS patients. In addition, the duplication location may be related to phenotypic severity. This observation may provide a new approach for genotype-phenotype correlations, and thus more personalized genetic counselling.
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Affiliation(s)
- Ainhoa Pascual-Alonso
- Fundación San Juan de Dios, Servicio de Medicina Genética y Molecular, Barcelona, Spain
| | - Laura Blasco
- Fundación San Juan de Dios, Servicio de Medicina Genética y Molecular, Barcelona, Spain
| | - Silvia Vidal
- Fundación San Juan de Dios, Servicio de Medicina Genética y Molecular, Barcelona, Spain
| | - Esther Gean
- Departamento de Medicina Genética y Molecular, Hospital Universitario San Juan de Dios, Barcelona, Spain
| | - Patricia Rubio
- Departamento de Medicina Genética y Molecular, Hospital Universitario San Juan de Dios, Barcelona, Spain
| | - Mar O'Callaghan
- Departamento de Neurología Pediátrica, Hospital Universitario San Juan de Dios, Barcelona, Spain
| | - Antonio F Martínez-Monseny
- Departamento de Medicina Genética y Molecular, Hospital Universitario San Juan de Dios, Barcelona, Spain
| | - Alba Aina Castells
- Fundación San Juan de Dios, Servicio de Medicina Genética y Molecular, Barcelona, Spain.,Neural Development Lab, Departament de Patologia i Terapèutica Experimental, Institut de Neurociències, Universitat de Barcelona, IDIBELL, l'Hospitalet de Llobregat, Barcelona, Spain
| | - Clara Xiol
- Fundación San Juan de Dios, Servicio de Medicina Genética y Molecular, Barcelona, Spain
| | - Vicenç Català
- Unitad de Biología Celular y Genética Médica, Departament of BCFyI, Universidad Autónoma de Barcelona, Barcelona, Spain
| | - Nuria Brandi
- Servicio de Medicina Genètica i Molecular, Hospital Universitario San Juan de Dios, Barcelona, Spain
| | - Paola Pacheco
- Servicio de Medicina Genètica i Molecular, Hospital Universitario San Juan de Dios, Barcelona, Spain
| | - Carlota Ros
- Servicio de Medicina Genètica i Molecular, Hospital Universitario San Juan de Dios, Barcelona, Spain
| | - Miguel Del Campo
- Pediatrics, Genetic Epidemiology, Hospital Valle Hebrón, Barcelona, Spain
| | - Encarna Guillén
- Unidad de Genética, Hospital Virgen de la Arrixaca, Murcia, Spain
| | - Salva Ibañez
- Unidad de Genética, Hospital Virgen de la Arrixaca, Murcia, Spain
| | - María J Sánchez
- Unidad de Genética, Hospital Virgen de la Arrixaca, Murcia, Spain
| | - Pablo Lapunzina
- Instituto de Genética Médica y Molecular, Hospital Universitario La Paz, Madrid, Spain.,CIBERER (Biomedical Network Research Center for Rare Diseases), Instituto de Salud Carlos III, Madrid, Spain
| | - Julián Nevado
- Instituto de Genética Médica y Molecular, Hospital Universitario La Paz, Madrid, Spain.,CIBERER (Biomedical Network Research Center for Rare Diseases), Instituto de Salud Carlos III, Madrid, Spain
| | - Fernando Santos
- Instituto de Genética Médica y Molecular, Hospital Universitario La Paz, Madrid, Spain
| | | | - Juan D Ortigoza-Escobar
- Departamento de Neurología Pediátrica, Hospital Universitario San Juan de Dios, Barcelona, Spain
| | - María I Tejada
- CIBERER (Biomedical Network Research Center for Rare Diseases), Instituto de Salud Carlos III, Madrid, Spain.,Laboratorio de Genética Molecular, Servicio de Genética, Instituto de Investigación Sanitaria Biocruces, Hospital Universitario de Cruces, Barakaldo, Spain
| | - Hiart Maortua
- CIBERER (Biomedical Network Research Center for Rare Diseases), Instituto de Salud Carlos III, Madrid, Spain.,Laboratorio de Genética Molecular, Servicio de Genética, Instituto de Investigación Sanitaria Biocruces, Hospital Universitario de Cruces, Barakaldo, Spain
| | - Francisco Martínez
- Unidad de Genética, Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - Carmen Orellana
- Unidad de Genética, Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - Mónica Roselló
- Unidad de Genética, Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | | | - María Obón
- Area de Genètica Clínica i Consell Genètic, Laboratoris ICS, Girona, Spain
| | - Alberto Plaja
- Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Hospital Universitari Vall d'Hebron, Barcelona, Spain
| | | | - Eduardo Tizzano
- Area Genética Clínica y Molecular, Hospital Universitari Vall d'Hebron, Barcelona, Spain
| | - Rosario Marín
- Hospital Universitario Puerta del Mar Unidad de Genética, Cádiz, Spain
| | - José L Peña-Segura
- Unidad de Neuropediatría, Hospital Universitario Miguel Servet, Zaragoza, Spain
| | - Soledad Alcántara
- Neural Development Lab, Departament de Patologia i Terapèutica Experimental, Institut de Neurociències, Universitat de Barcelona, IDIBELL, l'Hospitalet de Llobregat, Barcelona, Spain
| | - Judith Armstrong
- Servicio de Medicina Genètica i Molecular, Hospital Universitario San Juan de Dios, Barcelona, Spain.,CIBERER (Biomedical Network Research Center for Rare Diseases), Instituto de Salud Carlos III, Madrid, Spain.,Institut de Recerca Pediàtrica, Hospital Sant Joan de Déu, Barcelona, Spain
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3
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Natera-De Benito D, Poo P, Gean E, Vicente-Villa A, García-Cazorla A, Fons-Estupiña MC. [Diploid/triploid mosaicism: a variable but characteristic phenotype]. Rev Neurol 2014; 59:158-163. [PMID: 25059266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
INTRODUCTION Diploid/triploid mosaicism is a rare chromosomal abnormality. It is caused by a failure in the postzygotic division during embryonic development. It results in the coexistence of two genetically heterogeneous cell lines (46,XX and 69,XXX) in one individual. His clinical phenotype is characteristic. Pigmentary changes with a distribution pattern following Blaschko's lines abnormalities in other ectoderm-derived tissues are the main diagnostic signs. CASE REPORTS Three cases of diploid/triploid mosaicism are described, and compared to the previously reported cases. The most frequently observed symptoms were mental retardation, truncal obesity, short stature, hemihypertrophy, small and narrow hands with clino and camptodactyly. Phenotypic characteristics of our three patients were similar to those of previously reported cases. Although there is no single and specific phenotype associated with mosaicism diploid/triploid, there are some dysmorphic features that shape a recognizable malformative syndrome. Peripheral blood lymphocytes karyotype was normal in our patients. Diagnosis was reached performing a fibroblast karyotype from hypopigmented skin. CONCLUSIONS Intellectual disability associated with truncal obesity, short stature, hemihypertrophy or clino/camptodactyly should suggest to clinicians the possible existence of a diploid/triploid mosaicism. In most cases, karyotype from fibroblasts is needed to reach the diagnosis.
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Esquerda M, Gabaldón S, Gean E. [Ethical deliberations on genetic testing in children and adolescents]. Rev Neurol 2013; 57:237-239. [PMID: 23975531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
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5
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Caparrós-Martín JA, Valencia M, Reytor E, Pacheco M, Fernandez M, Perez-Aytes A, Gean E, Lapunzina P, Peters H, Goodship JA, Ruiz-Perez VL. The ciliary Evc/Evc2 complex interacts with Smo and controls Hedgehog pathway activity in chondrocytes by regulating Sufu/Gli3 dissociation and Gli3 trafficking in primary cilia. Hum Mol Genet 2012; 22:124-39. [PMID: 23026747 DOI: 10.1093/hmg/dds409] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Hedgehog (Hh) signaling is involved in patterning and morphogenesis of most organs in the developing mammalian embryo. Despite many advances in understanding core components of the pathway, little is known about how the activity of the Hh pathway is adjusted in organ- and tissue-specific developmental processes. Mutations in EVC or EVC2 disrupt Hh signaling in tooth and bone development. Using mouse models, we show here that Evc and Evc2 are mutually required for localizing to primary cilia and also for maintaining their normal protein levels. Consistent with Evc and Evc2 functioning as a complex, the skeletal phenotypes in either single or double homozygous mutant mice are virtually indistinguishable. Smo translocation to the cilium was normal in Evc2-deficient chondrocytes following Hh activation with the Smo-agonist SAG. However, Gli3 recruitment to cilia tips was reduced and Sufu/Gli3 dissociation was impaired. Interestingly, we found Smo to co-precipitate with Evc/Evc2, indicating that in some cells Hh signaling requires direct interaction of Smo with the Evc/Evc2 complex. Expression of a dominantly acting Evc2 mutation previously identified in Weyer's acrodental dysostosis (Evc2Δ43) caused mislocalization of Evc/Evc2Δ43 within the cilium and also reproduced the Gli3-related molecular defects observed in Evc2(-/-) chondrocytes. Moreover, Evc silencing in Sufu(-/-) cells attenuated the output of the Hh pathway, suggesting that Evc/Evc2 also promote Hh signaling in the absence of Sufu. Together our data reveal that the Hh pathway involves Evc/Evc2-dependent modulations that are necessary for normal endochondral bone formation.
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Affiliation(s)
- Jose A Caparrós-Martín
- Instituto de Investigaciones Biomédicas de Madrid, Arturo Duperier 4, Madrid 28029, Spain
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Fickie MR, Lapunzina P, Gentile JK, Tolkoff-Rubin N, Kroshinsky D, Galan E, Gean E, Martorell L, Romanelli V, Toral JF, Lin AE. Adults with Sotos syndrome: review of 21 adults with molecularly confirmed NSD1 alterations, including a detailed case report of the oldest person. Am J Med Genet A 2011; 155A:2105-11. [PMID: 21834047 DOI: 10.1002/ajmg.a.34156] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2010] [Accepted: 05/30/2011] [Indexed: 11/09/2022]
Abstract
Sotos syndrome is a well-described multiple anomaly syndrome characterized by overgrowth, distinctive craniofacial appearance, and variable learning disabilities. The diagnosis of Sotos syndrome relied solely on these clinical criteria until haploinsufficiency of the NSD1 gene was identified as causative. We describe a 63-year-old woman with classic features and a pathogenic NSD1 mutation, who we believe to be the oldest reported person with Sotos syndrome. She is notable for the diagnosis of Sotos syndrome late in life, mild cognitive limitation, and chronic kidney disease attributed to fibromuscular dysplasia for which she recently received a transplant. She has basal cell and squamous cell carcinoma for which her lifetime of sun exposure and fair cutaneous phototype are viewed as risk factors. We also reviewed previous literature reports (n = 11) for adults with Sotos syndrome, and studied patients ascertained in the Spanish Overgrowth Syndrome Registry (n = 15). Analysis was limited to 21/27 (78%) total patients who had molecular confirmation of Sotos syndrome (15 with a mutation, 6 with a microdeletion). With a mean age of 26 years, the most common features were learning disabilities (90%), scoliosis (52%), eye problems (43%), psychiatric issues (30%), and brain imaging anomalies (28%). Learning disabilities were more severe in patients with a microdeletion than in those with a point mutation. From this small study with heterogeneous ascertainment we suggest modest adjustments to the general healthcare monitoring of individuals with Sotos syndrome. Although this series includes neoplasia in four cases, this should not be interpreted as incidence. Age-appropriate cancer surveillance should be maintained.
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Affiliation(s)
- Matthew R Fickie
- Genetics Unit, MassGeneral Hospital for Children, Harvard Medical School Genetics Training Program, Boston, Massachusetts, USA.
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7
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Martínez-Glez V, Romanelli V, Mori MA, Gracia R, Segovia M, González-Meneses A, López-Gutierrez JC, Gean E, Martorell L, Lapunzina P. Macrocephaly-capillary malformation: Analysis of 13 patients and review of the diagnostic criteria. Am J Med Genet A 2011; 152A:3101-6. [PMID: 21077203 DOI: 10.1002/ajmg.a.33514] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Macrocephaly-capillary malformation (M-CM) is a genetic syndrome of unknown etiology characterized by an enlarged head circumference and patchy, reticular capillary malformation. We describe the clinical features of 13 cases, report on the genome-wide Copy Number Variation characterization of these patients, analyze the main clinical features of this syndrome and propose a modification of the current diagnostic criteria: the inclusion of both overgrowth/asymmetry and neuroimaging alterations as major criteria.
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Affiliation(s)
- Víctor Martínez-Glez
- Instituto de Genética Médica y Molecular (INGEMM), IdiPAZ, Hospital Universitario La Paz, Madrid, Spain.
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8
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Romanelli V, Meneses HNM, Fernández L, Martínez-Glez V, Gracia-Bouthelier R, F Fraga M, Guillén E, Nevado J, Gean E, Martorell L, Marfil VE, García-Miñaur S, Lapunzina P. Beckwith-Wiedemann syndrome and uniparental disomy 11p: fine mapping of the recombination breakpoints and evaluation of several techniques. Eur J Hum Genet 2011; 19:416-21. [PMID: 21248736 DOI: 10.1038/ejhg.2010.236] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Beckwith-Wiedemann syndrome (BWS) is a phenotypically and genotypically heterogeneous overgrowth syndrome characterized by somatic overgrowth, macroglossia and abdominal wall defects. Other usual findings are hemihyperplasia, embryonal tumours, adrenocortical cytomegaly, ear anomalies, visceromegaly, renal abnormalities, neonatal hypoglycaemia, cleft palate, polydactyly and a positive family history. BWS is a complex, multigenic disorder associated, in up to 90% of patients, with alteration in the expression or function of one or more genes in the 11p15.5 imprinted gene cluster. There are several molecular anomalies associated with BWS and the large proportion of cases, about 85%, is sporadic and karyotypically normal. One of the major categories of BWS molecular alteration (10-20% of cases) is represented by mosaic paternal uniparental disomy (pUPD), namely patients with two paternally derived copies of chromosome 11p15 and no maternal contribution for that. In these patients, in addition to the effects of IGF2 overexpression, a decreased level of the maternally expressed gene CDKN1C may contribute to the BWS phenotype. In this paper, we reviewed a series of nine patients with BWS because of pUPD using several methods with the aim to evaluate the percentage of mosaicism, the methylation status at both loci, the extension of the pUPD at the short arm and the breakpoints of recombination. Fine mapping of mitotic recombination breakpoints by single-nucleotide polymorphism-array in individuals with UPD and fine estimation of epigenetic defects will provide a basis for understanding the aetiology of BWS, allowing more accurate prognostic predictions and facilitating management and surveillance of individuals with this disorder.
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Affiliation(s)
- Valeria Romanelli
- INGEMM, Instituto de Genética Médica y Molecular, IDIPaz, Hospital Universitario La Paz, Universidad Autónoma de Madrid, Madrid, Spain
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9
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Roche A, Mora J, Perez MDM, Gean E, Perez B, O'Callaghan M, Catala J, De Torres C, Cruz O, Prat J, Parareda A. Axenfeld-Rieger ocular anomaly and retinoblastoma caused by constitutional chromosome 13q deletion. Pediatr Blood Cancer 2010; 54:480-2. [PMID: 19927293 DOI: 10.1002/pbc.22354] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Axenfeld-Rieger (AR) ocular anomaly might be due to deletions of different chromosomes. No association between AR, mental retardation, and retinoblastoma has been described. We report a 2-month-old female with general development delay and dysmorphic features. AR anomaly was detected, and a retinoblastoma (RB) was diagnosed in a very early stage. De novo 13q deletion was identified. Systemic chemotherapy, focal cryotherapy, transpupillary thermotherapy, brachytherapy, and intra-arterial chemotherapy were needed to control the RB. This is the first report of an association of AR, 13q deletion, and retinoblastoma, to be disclosed in patients born with such ocular and dysmorphic features.
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Affiliation(s)
- Ana Roche
- Department of Child Neurology, Hospital Sant Joan de Déu, Barcelona, Spain
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10
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García-Cazorla A, Sans A, Baquero M, García-Bargo MD, Arellano M, Poo P, Gean E, Campistol J. White matter alterations associated with chromosomal disorders. Dev Med Child Neurol 2004; 46:148-53. [PMID: 14995083 DOI: 10.1017/s0012162204000271] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
White matter alterations in chromosomal disorders have been reported mainly in 18q-syndrome. Our aim was to evaluate white matter alterations in patients with chromosomal abnormalities detected through conventional cytogenetic techniques. Forty-four patients with chromosomal abnormalities, excluding trisomy 21, were diagnosed in our hospital between May 1999 and December 2002 (24 males, 20 females; mean age 6 years 4 months [SD 3 years 2 months], range 0 to 18 years). Of the 44 patients, 14 had brain magnetic resonance imaging (12 males, 2 females; mean age 4 years 2 months [SD 4 years 4 months]; five with sex chromosomal disorders [SCD] and nine with autosomal chromosomal disorders [ACD]). Of these 14 patients, eight (four with SCD and four with ACD) had abnormal white matter findings of similar patterns. These patients had pseudonodular, subcortical, and periventricular white matter high signal intensity images in T2, and fluid-attenuated inversion recovery sequences that were isolated or confluent. The images did not correlate with the neurological clinical state. Given that eight of the 14 patients showed these lesions, their prevalence in different chromosomal abnormalities appears to be high, even though they have not been well reported in the literature. To our knowledge, these alterations have never been described in SCD. We concluded that unknown factors related to the myelination processes may be localized in different chromosomes.
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11
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Ortega Rodríguez J, Ferrer Ferrán J, Fernández López A, Iriondo Sanz M, Manzanares Buhí R, Gean E. [The Ellis-van Creveld syndrome (chondroectodermal dysplasia). Apropos a clinical case]. An Esp Pediatr 1999; 50:74-6. [PMID: 10083650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- J Ortega Rodríguez
- Unidad Integrada de Pediatría, Hospital Sant Joan de Dèu, Esplugues, Barcelona
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12
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Reig C, Antich J, Gean E, Dante Heredia C, Valverde D, Baiget M, Carballo M. [Identification of Arg-135-Leu mutation in the rhodopsin gene in a family with autosomal dominant retinitis pigmentosa]. Med Clin (Barc) 1996; 106:219-21. [PMID: 8667664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Mutations in the rhodopsin gene have been sought in a family with autosomal dominant retinitis pigmentosa. Screening for mutations in the rhodopsin gene was carried out by polimerase chain reaction and denaturant gradient gel electrophoresis. Direct DNA sequencing was performed for the characterization of punctual mutations. A base substitution in the exon 2 of the rhodopsin gene was detected. Direct DNA sequencing revealed a CGC to CTG change in codon 135, that substitutes arginine for leucine residue in rhodopsin. The mutation segregates with the disease phenotype in the family. The mutation Arg-135-Leu causes the retinitis pigmentosa phenotype in the family, where the disease is inherited following an autosomal dominant pattern.
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Affiliation(s)
- C Reig
- Secció de Genètica, Hospital Sant Joan de Déu, Barcelona
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Valbuena O, Póo P, Campistol J, Vernet A, Fernández-Alvarez E, Sierra I, Gean E. [Ataxia telangiectasia: review of 13 new cases]. Rev Neurol 1996; 24:77-80. [PMID: 8852005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
We report the review of 13 patients who were diagnosed of ataxia telangiectasia before 6 years of age. All of them manifested cerebelous ataxia, oculocutaneus telangiectasias (11), sinopulmonary infections (9), dystonia (9), oculomotor apraxia (9) and Burkitt linfoma (1). We analyse the most common presentation of the disease in early stages and the complementary studies performed. The prompt diagnosis allow us a better control of infections, malignant process and finally the possibility of genetic counseling.
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Affiliation(s)
- O Valbuena
- Servicio de Neuropediatria, Unitat Integrada Hospital Clinic-Sant Joan de Déu, Barcelona
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14
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Reig C, Serra A, Gean E, Vidal M, Arumí J, De la Calzada MD, Antich J, Carballo M. A point mutation in the RDS-peripherin gene in a Spanish family with central areolar choroidal dystrophy. Ophthalmic Genet 1995; 16:39-44. [PMID: 7493155 DOI: 10.3109/13816819509056911] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The RDS-peripherin gene encodes a photoreceptor-specific protein that is localized in the outer segment disc membranes of both rods and cones. We screened a Spanish family with central areolar choroidal dystrophy for mutations in candidate genes. A base substitution was identified in the RDS-peripherin gene of one patient and DNA sequencing revealed a C-to-T transition in codon 172, arginine being substituted by tryptophan. The mutation was also detected in two asymptomatic family members who showed irregular pigmentation in the retinal pigment epithelium (RPE). The phenotype is similar to other macular dystrophies caused by mutation in the RDS-peripherin gene.
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Affiliation(s)
- C Reig
- Secció de Genética Hospital de Sant Joan de Dèu, Barcelona, Spain
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15
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Reig C, Antich J, Gean E, Garcia-Sandoval B, Ramos C, Ayuso C, Carballo M. Identification of a novel rhodopsin mutation (Met-44-Thr) in a simplex case of retinitis pigmentosa. Hum Genet 1994; 94:283-6. [PMID: 8076945 DOI: 10.1007/bf00208284] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Retinitis pigmentosa (RP) is a group of genetically heterogeneous retinal degenerations that can be autosomal dominant (ADRP), autosomal recessive (ARRP), or X-linked. Approximately 30% of ADRP patients show point mutations or small deletions in the rhodopsin gene. However, over 50% of the RP patients are simplex cases (sporadic). Screening for mutations in the rhodopsin gene of 33 patients with simplex RP by denaturing gradient gel electrophoresis (DGGE) was carried out. One patient, with D-type (diffuse) RP and consanguineous parents, showed an altered electrophoretic pattern for the 5' half of exon 1. Direct sequencing revealed a new mutation ATG to ACG in codon 44; this predicts a change of Met-44-Thr in rhodopsin. The position and amino acid substitution suggest that this mutation causes the RP phenotype. Implications for genetic counselling are discussed.
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Affiliation(s)
- C Reig
- Secció de Genética del Hospital Sant Joan de Déu, Barcelona, Spain
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16
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Reig C, Llecha N, Antich J, Gean E, Tejada I, Molina M, Reventós J, Carballo M. A missense mutation (211His-->Arg) and a silent (160Thr) mutation within the rhodopsin gene in a spanish autosomal dominant retinitis pigmentosa family. Hum Mol Genet 1994; 3:195-6. [PMID: 8162026 DOI: 10.1093/hmg/3.1.195] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Affiliation(s)
- C Reig
- Secció de Genética del Hospital Sant Joan de Déu, Barcelona, Spain
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Coll MD, Clusellas N, Grao P, Gean E, Egozcue J. Satellite polymorphism or Y/autosome translocation? Clin Genet 1993; 43:271-2. [PMID: 8375110 DOI: 10.1111/j.1399-0004.1993.tb03817.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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