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5 results on '"Izquierdo-Álvarez S"'

2. Osteogenesis imperfecta caused by COL1A1, CRTAP and LEPRE1 mutations. Report of 2cases.

Author

Caudevilla Lafuente P, Izquierdo-Álvarez S, and Labarta Aizpún JI

Subjects
Collagen Type I, alpha 1 Chain, Female, Genetic Markers, Humans, Osteogenesis Imperfecta diagnosis, Collagen Type I genetics, Extracellular Matrix Proteins genetics, Membrane Glycoproteins genetics, Molecular Chaperones genetics, Mutation, Osteogenesis Imperfecta genetics, Prolyl Hydroxylases genetics, Proteoglycans genetics
Published
2019
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3. Rasopathies case report: concurrence of two pathogenic variations de novo in NF1 and KRAS genes in a patient.

Author

Baquedano Lobera I, Izquierdo Álvarez S, and Oliván Del Cacho MJ

Subjects
Abnormalities, Multiple genetics, Female, Humans, Infant, Newborn, Mitogen-Activated Protein Kinase Kinases metabolism, Signal Transduction, ras Proteins metabolism, Genes, Neurofibromatosis 1, Mutation, Noonan Syndrome genetics, Proto-Oncogene Proteins p21(ras) genetics
Abstract

Background: Rasopathies are a group of genetic malformative syndromes including neurofibromatosis 1, Noonan, LEOPARD, Costello, cardio-facio-cutaneous, Legius, and capillary malformation-arteriovenous malformation syndromes., Case Presentation: We present a female newborn that consulted at the emergency department with refusal to eat and sleepiness. A shortened femur, thickened nucal fold and suspect for agenesis of the corpus callosum were observed in prenatal ultrasound. Her phenotype included hypertelorism, antimongoloid obliquity of the palpebral fissure, prominent forehead, long filtrum, thickened nucal fold, separated nipples, widespread thickened skinfolds and café-au-lait spots. She had a systolic murmur due to pulmonary valve stenosis. The NF1 gene testing found the pathogenic variant p.E2586X (c.7756G > T) in exon 53, not described in any international database or scientific publications yet. Also, a mutation in the Kras gene was detected (p.Val14lle), which is associated with mild Noonan phenotype. Both variations were de novo., Conclusions: Not all genes and mutations have already been discovered, so it's important to document new findings, like our patient's, to enrich and update the international database and broaden all possible knowledge about rasopathies. This is the first case to be described presenting simultaneously two mutations in Kras and NF1 genes, whose possible synergic effect regarding its pathogenicity is unknown, but could be interesting towards therapeutic alternatives.

Published
2019
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5. Genetic landscape of 6089 inherited retinal dystrophies affected cases in Spain and their therapeutic and extended epidemiological implications

Author

Perea-Romero, I., Gordo, G., Iancu, I.F., Del Pozo-Valero, M., Almoguera, B., Blanco-Kelly, F., Carreño, E., Jimenez-Rolando, B., Lopez-Rodriguez, R., Lorda-Sanchez, I., Martin-Merida, I., Pérez de Ayala, L., Riveiro-Alvarez, R., Rodriguez-Pinilla, E., Tahsin-Swafiri, S., Trujillo-Tiebas, M.J., Bustamante-Aragones, A., Cardero-Merlo, R., Fernandez-Sanchez, R., Gallego-Merlo, J., Garcia-Vara, I., Gimenez-Pardo, A., Horcajada-Burgos, L., Infantes-Barbero, F., Lantero, E., Lopez-Martinez, M.A., Martinez-Ramas, A., Ondo, L., Rodriguez de Alba, M., Sanchez-Jimeno, C., Velez-Monsalve, C., Villaverde, C., Zurita, O., Aguilera-Garcia, D., Aguirre-Lamban, J., Arteche, A., Cantalapiedra, D., Fernandez-San Jose, P., Galbis-Martinez, L., Garcia-Hoyos, M., Lombardia, C., Lopez-Molina, M.I., Perez-Carro, R., Da Silva, L.R.J., Ramos, C., Sanchez-Alcudia, R., Sanchez-Navarro, I., Tatu, S.D., Vallespin, E., Aller, E., Bernal, S., Gamundi, M.J., Garcia-Garcia, G., Hernan, I., Jaijo, T., Antiñolo, G., Baiget, M., Carballo, M., Millan, J.M., Valverde, D., Allikmets, R., Banfi, S., Cremers, F.P.M., Collin, R.W.J., De Baere, E., Hakonarson, H., Kohl, S., Rivolta, C., Sharon, D., Alonso-Cerezo, M.C., Ballesta-Martinez, M.J., Beltran, S., Benito Lopez, C., Català-Mora, J., Catalli, C., Cotarelo-Perez, C., Fernandez-Burriel, M., Fontalba-Romero, A., Galán-Gómez, E., Garcia-Barcina, M., Garcia-Cruz, L.M., Gener, B., Gil-Fournier, B., Govea, N., Guillen-Navarro, E., Hernando Acero, I., Irigoyen, C., Izquierdo-Álvarez, S., Llano-Rivas, I., López-Ariztegui, M.A., Lopez-Gonzalez, V., Lopez-Grondona, F., Martorell, L., Mendez-Perez, P., Moreno-Igoa, M., Oancea-Ionescu, R., Palau-Martinez, F., Perez de Nanclares, G., Ramos-Fuentes, F.J., Rodriguez-Lopez, R., Rodriguez-Pedreira, M., Rodriguez-Peña, L., Rodriguez-Sanchez, B., Rosell, J., Rosello, N., Saez-Villaverde, R., Santana, A., Valenzuela-Palafoll, I., Villota-Deleu, E., Garcia-Sandoval, B., Minguez, P., Avila-Fernandez, A., Corton, M., Ayuso, C., Instituto de Salud Carlos III, Ministerio de Sanidad y Consumo (España), Centro de Investigación Biomédica en Red Enfermedades Raras (España), Comunidad de Madrid, European Commission, ONCE, Fundación Ramón Areces, Fundación Conchita Rábago de Jiménez Díaz, UAM. Departamento de Medicina, Perea-Romero, I., Gordo, G., Iancu, I. F., Del Pozo-Valero, M., Almoguera, B., Blanco-Kelly, F., Carreno, E., Jimenez-Rolando, B., Lopez-Rodriguez, R., Lorda-Sanchez, I., Martin-Merida, I., Perez de Ayala, L., Riveiro-Alvarez, R., Rodriguez-Pinilla, E., Tahsin-Swafiri, S., Trujillo-Tiebas, M. J., Bustamante-Aragones, A., Cardero-Merlo, R., Fernandez-Sanchez, R., Gallego-Merlo, J., Garcia-Vara, I., Gimenez-Pardo, A., Horcajada-Burgos, L., Infantes-Barbero, F., Lantero, E., Lopez-Martinez, M. A., Martinez-Ramas, A., Ondo, L., Rodriguez de Alba, M., Sanchez-Jimeno, C., Velez-Monsalve, C., Villaverde, C., Zurita, O., Aguilera-Garcia, D., Aguirre-Lamban, J., Arteche, A., Cantalapiedra, D., Fernandez-San Jose, P., Galbis-Martinez, L., Garcia-Hoyos, M., Lombardia, C., Lopez-Molina, M. I., Perez-Carro, R., Da Silva, L. R. J., Ramos, C., Sanchez-Alcudia, R., Sanchez-Navarro, I., Tatu, S. D., Vallespin, E., Aller, E., Bernal, S., Gamundi, M. J., Garcia-Garcia, G., Hernan, I., Jaijo, T., Antinolo, G., Baiget, M., Carballo, M., Millan, J. M., Valverde, D., Allikmets, R., Banfi, S., Cremers, F. P. M., Collin, R. W. J., De Baere, E., Hakonarson, H., Kohl, S., Rivolta, C., Sharon, D., Alonso-Cerezo, M. C., Ballesta-Martinez, M. J., Beltran, S., Benito Lopez, C., Catala-Mora, J., Catalli, C., Cotarelo-Perez, C., Fernandez-Burriel, M., Fontalba-Romero, A., Galan-Gomez, E., Garcia-Barcina, M., Garcia-Cruz, L. M., Gener, B., Gil-Fournier, B., Govea, N., Guillen-Navarro, E., Hernando Acero, I., Irigoyen, C., Izquierdo-Alvarez, S., Llano-Rivas, I., Lopez-Ariztegui, M. A., Lopez-Gonzalez, V., Lopez-Grondona, F., Martorell, L., Mendez-Perez, P., Moreno-Igoa, M., Oancea-Ionescu, R., Palau-Martinez, F., Perez de Nanclares, G., Ramos-Fuentes, F. J., Rodriguez-Lopez, R., Rodriguez-Pedreira, M., Rodriguez-Pena, L., Rodriguez-Sanchez, B., Rosell, J., Rosello, N., Saez-Villaverde, R., Santana, A., Valenzuela-Palafoll, I., Villota-Deleu, E., Garcia-Sandoval, B., Minguez, P., Avila-Fernandez, A., Corton, M., and Ayuso, C.

Subjects
Male, 0301 basic medicine, Peripherins, ABCA4, Sensory disorders Donders Center for Medical Neuroscience [Radboudumc 12], Cohort Studies, 0302 clinical medicine, Epidemiology, Genetics research, Prevalence, Genetics, Extracellular Matrix Proteins, Multidisciplinary, medicine.diagnostic_test, biology, Molecular medicine, pedigree, genetic screening, Middle Aged, Phenotype, Myosin VIIa, Cohort, Medicine, Female, Adult, medicine.medical_specialty, MYO7A, Medicina, Science, Article, 03 medical and health sciences, retinitis pigmentosa, Retinal Dystrophies, Retinitis pigmentosa, medicine, Humans, Genetic Testing, Clinical genetics, Eye Proteins, Author Correction, Gene, Aged, Retrospective Studies, Genetic testing, Hereditary eye disease, DNA, medicine.disease, Cross-Sectional Studies, 030104 developmental biology, retina dystrophy, Spain, 030221 ophthalmology & optometry, biology.protein, ATP-Binding Cassette Transporters, mutation
Abstract

ESRETNET Study Group, The ERDC Study Group, The Associated Clinical Study Group., Inherited retinal diseases (IRDs), defined by dysfunction or progressive loss of photoreceptors, are disorders characterized by elevated heterogeneity, both at the clinical and genetic levels. Our main goal was to address the genetic landscape of IRD in the largest cohort of Spanish patients reported to date. A retrospective hospital-based cross-sectional study was carried out on 6089 IRD affected individuals (from 4403 unrelated families), referred for genetic testing from all the Spanish autonomous communities. Clinical, demographic and familiar data were collected from each patient, including family pedigree, age of appearance of visual symptoms, presence of any systemic findings and geographical origin. Genetic studies were performed to the 3951 families with available DNA using different molecular techniques. Overall, 53.2% (2100/3951) of the studied families were genetically characterized, and 1549 different likely causative variants in 142 genes were identified. The most common phenotype encountered is retinitis pigmentosa (RP) (55.6% of families, 2447/4403). The most recurrently mutated genes were PRPH2, ABCA4 and RS1 in autosomal dominant (AD), autosomal recessive (AR) and X-linked (XL) NON-RP cases, respectively; RHO, USH2A and RPGR in AD, AR and XL for non-syndromic RP; and USH2A and MYO7A in syndromic IRD. Pathogenic variants c.3386G > T (p.Arg1129Leu) in ABCA4 and c.2276G > T (p.Cys759Phe) in USH2A were the most frequent variants identified. Our study provides the general landscape for IRD in Spain, reporting the largest cohort ever presented. Our results have important implications for genetic diagnosis, counselling and new therapeutic strategies to both the Spanish population and other related populations., This work was supported by the Instituto de Salud Carlos III (ISCIII) of the Spanish Ministry of Health (FIS; PI16/00425 and PI19/00321), Centro de Investigación Biomédica en Red Enfermedades Raras (CIBERER, 06/07/0036), IIS-FJD BioBank (PT13/0010/0012), Comunidad de Madrid (CAM, RAREGenomics Project, B2017/BMD-3721), European Regional Development Fund (FEDER), the Organización Nacional de Ciegos Españoles (ONCE), Fundación Ramón Areces, Fundación Conchita Rábago and the University Chair UAM-IIS-FJD of Genomic Medicine. Irene Perea-Romero is supported by a PhD fellowship from the predoctoral Program from ISCIII (FI17/00192). Ionut F. Iancu is supported by a grant from the Comunidad de Madrid (CAM, PEJ-2017-AI/BMD7256). Marta del Pozo-Valero is supported by a PhD grant from the Fundación Conchita Rábago. Berta Almoguera is supported by a Juan Rodes program from ISCIII (JR17/00020). Pablo Minguez is supported by a Miguel Servet program from ISCIII (CP16/00116). Marta Corton is supported by a Miguel Servet program from ISCIII (CPII17/00006).

Published
2021

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