المؤلفون: Julián Nevado, Sixto García-Miñaúr, María Palomares-Bralo, Elena Vallespín, Encarna Guillén-Navarro, Jordi Rosell, Cristina Bel-Fenellós, María Ángeles Mori, Montserrat Milá, Miguel del Campo, Pilar Barrúz, Fernando Santos-Simarro, Gabriela Obregón, Carmen Orellana, Harry Pachajoa, Jair Antonio Tenorio, Enrique Galán, Juan C. Cigudosa, Angélica Moresco, César Saleme, Silvia Castillo, Elisabeth Gabau, Luis Pérez-Jurado, Ana Barcia, Maria Soledad Martín, Elena Mansilla, Isabel Vallcorba, Pedro García-Murillo, Franco Cammarata-Scalisi, Natálya Gonçalves Pereira, Raquel Blanco-Lago, Mercedes Serrano, Juan Dario Ortigoza-Escobar, Blanca Gener, Verónica Adriana Seidel, Pilar Tirado, Pablo Lapunzina, Spanish PMS Working Group, Mena Rocío, Lleguer Roser, Fernández-Montaño Victoria, Martín Rubén, Fernández Blanca, García-Santiago Fé, Gómez del Pozo Victoria, Peña Carolina, Alhambra Norma, García Carlos, Rodríguez Juan Ramón, Martínez-Bermejo Antonio, Málaga Ignacio, Martínez-Monseny Antonio Federico, Armstrong Judith, Anticona Jennifer, Hernando-Davalillo Cristina, San Martí Adrián Alcalá, Martorell Loreto, Yubero Delia, Nunes Tania, Callaghan Mar O´, Alonso Xenia, Ramos Federico, López Jesús Casas, López-González Vanesa, M Juliana Ballesta, Armengol Lluís, González-Meneses Antonio, Borrego Salud, Roselló Mónica, Suela Javier, Pérez-Granero Ángeles, Rodríguez-Revenga Laia

المصدر: Frontiers in Genetics, Vol 13 (2022)

مصطلحات موضوعية: autistic behavior, 22q13 deletion syndrome, Phelan-McDermid syndrome (PMS), SHANK3, subtelomeric deletion syndrome, intellectual disabilities (ID), Genetics, QH426-470

الوصف: Phelan-McDermid syndrome (PMS, OMIM# 606232) results from either different rearrangements at the distal region of the long arm of chromosome 22 (22q13.3) or pathogenic sequence variants in the SHANK3 gene. SHANK3 codes for a structural protein that plays a central role in the formation of the postsynaptic terminals and the maintenance of synaptic structures. Clinically, patients with PMS often present with global developmental delay, absent or severely delayed speech, neonatal hypotonia, minor dysmorphic features, and autism spectrum disorders (ASD), among other findings. Here, we describe a cohort of 210 patients with genetically confirmed PMS. We observed multiple variant types, including a significant number of small deletions (

وصف الملف: electronic resource

العلاقة: https://www.frontiersin.org/articles/10.3389/fgene.2022.652454/fullTest; https://doaj.org/toc/1664-8021Test

الوصول الحر: https://doaj.org/article/45e2ed9b52f940b0bd31664eea90cf57Test

المؤلفون: Virginia Pérez‐Grijalba, Alberto García‐Oguiza, María López, Judith Armstrong, Sixto García‐Miñaur, Jose María Mesa‐Latorre, Mar O'Callaghan, Mercé Pineda Marfa, Maria Antonia Ramos‐Arroyo, Fernando Santos‐Simarro, Verónica Seidel, Elena Domínguez‐Garrido

المصدر: Molecular Genetics & Genomic Medicine, Vol 7, Iss 11, Pp n/a-n/a (2019)

مصطلحات موضوعية: CREBBP, epigenetics, genotype–phenotype correlation, Rubinstein‐Taybi syndrome, Genetics, QH426-470

الوصف: Abstract Background Rubinstein‐Taybi syndrome (RSTS) is a rare congenital disorder characterized by broad thumbs and halluces, intellectual disability, distinctive facial features, and growth retardation. Clinical manifestations of RSTS are varied and overlap with other syndromes’ phenotype, which makes clinical diagnosis challenging. CREBBP is the major causative gene (55%–60% of the cases), whereas pathogenic variants found in EP300 represent the molecular cause in 8% of RSTS patients. A wide range of CREBBP pathogenic variants have been reported so far, including point mutations (30%–50%) and large deletions (10%). Methods The aim of this study was to characterize the CREBBP genetic variant spectrum in 39 RSTS patients using Multiplex Ligation‐dependent Probe Amplification and DNA sequencing techniques (Sanger and Trio‐based whole‐exome sequencing). Results We identified 15 intragenic deletions/duplications, ranging from one exon to the entire gene. As a whole, 25 de novo point variants were detected: 4 missense, 12 nonsense, 5 frameshift, and 4 splicing pathogenic variants. Three of them were classified as of uncertain significance and one of the patients carried two different variants. Conclusion Seventeen of the 40 genetic variants detected were reported for the first time in this work contributing, thus, to expand the molecular knowledge of this complex disorder.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/2324-9269Test

الوصول الحر: https://doaj.org/article/64f4772ba8c645adabb9856b4244a604Test

المؤلفون: María López, Alberto García-Oguiza, Judith Armstrong, Inmaculada García-Cobaleda, Sixto García-Miñaur, Fernando Santos-Simarro, Verónica Seidel, Elena Domínguez-Garrido

المصدر: BMC Medical Genetics, Vol 19, Iss 1, Pp 1-8 (2018)

مصطلحات موضوعية: RSTS, EP300-Rubinstein-Taybi, Broad thumbs, Intellectual disability, EP300-mutations, EP300-RSTS-phenotype, Internal medicine, RC31-1245, Genetics, QH426-470

الوصف: Abstract Background Rubinstein-Taybi syndrome (RSTS) is a rare autosomal dominant neurodevelopmental disorder characterized by broad thumbs and halluces. RSTS is caused by mutations in CREBBP and in EP300 genes in 50–60% and 8%, respectively. Up to now, 76 RSTS-EP300 patients have been described. We present the clinical and molecular characterization of a cohort of RSTS patients carrying EP300 mutations. Methods Patients were selected from a cohort of 72 individuals suspected of RSTS after being negative in CREBBP study. MLPA and panel-based NGS EP300 were performed. Results Eight patients were found to carry EP300 mutations. Phenotypic characteristics included: intellectual disability (generally mild), postnatal growth retardation, infant feeding problems, psychomotor and language delay and typical facial dysmorphisms (microcephaly, downslanting palpebral fissures, columella below the alae nasi, and prominent nose). Broad thumbs and/or halluces were common, but angulated thumbs were only found in two patients. We identified across the gene novel mutations, including large deletion, frameshift mutations, nonsense, missense and splicing alterations, confirming de novo origin in all but one (the mother, possibly underdiagnosed, has short and broad thumbs and had learning difficulties). Conclusions The clinical evaluation of our patients corroborates that clinical features in EP300 are less marked than in CREBBP patients although it is difficult to establish a genotype-phenotype correlation although. It is remarkable that these findings are observed in a RSTS-diagnosed cohort; some patients harbouring EP300 mutations could present a different phenotype. Broadening the knowledge about EP300-RSTS phenotype may contribute to improve the management of patients and the counselling to the families.

وصف الملف: electronic resource

العلاقة: http://link.springer.com/article/10.1186/s12881-018-0548-2Test; https://doaj.org/toc/1471-2350Test

الوصول الحر: https://doaj.org/article/a134cbfb26ba4247aa62eca80e8b71b8Test

المؤلفون: Maria Nieves-Moreno, Susana Noval, Jesus Peralta, María Palomares-Bralo, Angela del Pozo, Sixto Garcia-Miñaur, Fernando Santos-Simarro, Elena Vallespin

المصدر: Genes, Vol 12, Iss 5, p 707 (2021)

مصطلحات موضوعية: PAX6, aniridia, congenital cataracts, nystagmus, Genetics, QH426-470

الوصف: Background: Congenital aniridia is a complex ocular disorder, usually associated with severe visual impairment, generally caused by mutations on the PAX6 gene. The clinical phenotype of PAX6 mutations is highly variable, making the genotype–phenotype correlations difficult to establish. Methods: we describe the phenotype of eight patients from seven unrelated families with confirmed mutations in PAX6, and very different clinical manifestations. Results: Only two patients had the classical aniridia phenotype while the other two presented with aniridia-related manifestations, such as aniridia-related keratopathy or partial aniridia. Congenital cataracts were the main manifestation in three of the patients in this series. All the patients had nystagmus and low visual acuity. Conclusions: The diagnosis of mild forms of aniridia is challenging, but these patients have a potentially blinding hereditary disease that might present with a more severe phenotype in future generations. Clinicians should be aware of the mild aniridia phenotype and request genetic testing to perform an accurate diagnosis.

وصف الملف: electronic resource

العلاقة: https://www.mdpi.com/2073-4425/12/5/707Test; https://doaj.org/toc/2073-4425Test

الوصول الحر: https://doaj.org/article/58b32784df0848c8aea483351bda975dTest

المؤلفون: Jair Tenorio-Castaño, Beatriz Morte, Julián Nevado, Víctor Martinez-Glez, Fernando Santos-Simarro, Sixto García-Miñaúr, María Palomares-Bralo, Marta Pacio-Míguez, Beatriz Gómez, Pedro Arias, Alba Alcochea, Juan Carrión, Patricia Arias, Berta Almoguera, Fermina López-Grondona, Isabel Lorda-Sanchez, Enrique Galán-Gómez, Irene Valenzuela, María Pilar Méndez Perez, Ivón Cuscó, Francisco Barros, Juan Pié, Sergio Ramos, Feliciano J. Ramos, Alma Kuechler, Eduardo Tizzano, Carmen Ayuso, Frank J. Kaiser, Luis A. Pérez-Jurado, Ángel Carracedo, The ENoD-CIBERER Consortium, The SIDE Consortium, Pablo Lapunzina

المصدر: Genes, Vol 12, Iss 5, p 738 (2021)

مصطلحات موضوعية: Schuurs–Hoeijmakers syndrome, intellectual disability, PACS1, rare disorders, phosphofurin acidic cluster sorting protein 1, pathogenic variant c.607C >, Genetics, QH426-470

الوصف: Schuurs–Hoeijmakers syndrome (SHMS) or PACS1 Neurodevelopmental disorder is a rare disorder characterized by intellectual disability, abnormal craniofacial features and congenital malformations. SHMS is an autosomal dominant hereditary disease caused by pathogenic variants in the PACS1 gene. PACS1 is a trans-Golgi-membrane traffic regulator that directs protein cargo and several viral envelope proteins. It is upregulated during human embryonic brain development and has low expression after birth. So far, only 54 patients with SHMS have been reported. In this work, we report on seven new identified SHMS individuals with the classical c.607C > T: p.Arg206Trp PACS1 pathogenic variant and review clinical and molecular aspects of all the patients reported in the literature, providing a summary of clinical findings grouped as very frequent (≥75% of patients), frequent (50–74%), infrequent (26–49%) and rare (less than ≤25%).

وصف الملف: electronic resource

العلاقة: https://www.mdpi.com/2073-4425/12/5/738Test; https://doaj.org/toc/2073-4425Test

الوصول الحر: https://doaj.org/article/2d9555adce584bd3876b207d116bd669Test

المؤلفون: Soraya Mediero, Oriana D'Anna Mardero, Ana Boto de los Bueis, Susana Noval Martín, Sixto García-Miñaur

المصدر: International Journal of Ophthalmology, Vol 10, Iss 4, Pp 658-660 (2017)

مصطلحات موضوعية: 660, Ophthalmology, RE1-994

وصف الملف: electronic resource

العلاقة: http://www.ijo.cn/en_publish/2017/4/20170426.pdfTest; https://doaj.org/toc/2222-3959Test; https://doaj.org/toc/2227-4898Test

الوصول الحر: https://doaj.org/article/486c24b9ed584310b2756060fb14aea3Test

المؤلفون: Carlos Sánchez-Montenegro, Alejandra Vilanova-Sánchez, Saturnino Barrena-Delfa, Jair Tenorio, Fernando Santos-Simarro, Sixto García-Miñaur, Pablo Lapunzina, Leopoldo Martínez-Martínez

المصدر: Case Reports in Genetics, Vol 2017 (2017)

مصطلحات موضوعية: Genetics, QH426-470

الوصف: Costello syndrome is caused by heterozygous de novo missense mutations in the protooncogene HRAS with tumor predisposition, especially rhabdomyosarcoma. We here report two pediatric patients with Costello syndrome and umbilical ligament rhabdomyosarcoma. A review of the literature published in English in MEDLINE from January 1971 to June 2016 using the search terms “Costello syndrome” and “rhabdomyosarcoma” was performed, including two new cases that we describe. Twenty-six patients with Costello syndrome and rhabdomyosarcoma were recorded with mean age of diagnosis of 2 years and 8 months. The most common tumor location was the abdomen/pelvis, including four out of ten of those in the umbilical ligament. The most common histological subtype was embryonal rhabdomyosarcoma. Overall survival was 43%. A total of 17 rhabdomyosarcomas in pediatric patients arising in the umbilical ligament were recorded with mean age of diagnosis of 3 years and 4 months. Overall survival was 69%. Costello syndrome is a poorly known disorder in pediatric oncology but their predisposition to malignancies implies the need for a new perspective on early diagnosis and aggressive medical and surgical treatment.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/2090-6544Test; https://doaj.org/toc/2090-6552Test

الوصول الحر: https://doaj.org/article/df0439c942704519a6be6279ebf7314fTest

المؤلفون: Julián Nevado, Rafaella Mergener, María Palomares-Bralo, Karen Regina Souza, Elena Vallespín, Rocío Mena, Víctor Martínez-Glez, María Ángeles Mori, Fernando Santos, Sixto García-Miñaur, Fé García-Santiago, Elena Mansilla, Luis Fernández, María Luisa de Torres, Mariluce Riegel, Pablo Lapunzina

المصدر: Genetics and Molecular Biology, Vol 37, Iss 1 suppl 1, Pp 210-219 (2014)

مصطلحات موضوعية: microdeletion, microduplication, chromosome rearrangement, novel deletions, novel duplications, Genetics, QH426-470

الوصف: Several new microdeletion and microduplication syndromes are emerging as disorders that have been proven to cause multisystem pathologies frequently associated with intellectual disability (ID), multiple congenital anomalies (MCA), autistic spectrum disorders (ASD) and other phenotypic findings. In this paper, we review the "new" and emergent microdeletion and microduplication syndromes that have been described and recognized in recent years with the aim of summarizing their main characteristics and chromosomal regions involved. We decided to group them by genomic region and within these groupings have classified them into those that include ID, MCA, ASD or other findings. This review does not intend to be exhaustive but is rather a quick guide to help pediatricians, clinical geneticists, cytogeneticists and/or molecular geneticists.

وصف الملف: electronic resource

العلاقة: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572014000200007&lng=en&tlng=enTest; https://doaj.org/toc/1678-4685Test

الوصول الحر: https://doaj.org/article/6101bc0de0dd4288ba9efef3ffc10c8eTest

المؤلفون: Natalie Blagowidow, Beata Nowakowska, Erica Schindewolf, Francesca Romana Grati, Carolina Putotto, Jeroen Breckpot, Ann Swillen, Terrence Blaine Crowley, Joanne C. Y. Loo, Lauren A. Lairson, Sólveig Óskarsdóttir, Erik Boot, Sixto Garcia-Minaur, Maria Cristina Digilio, Bruno Marino, Beverly Coleman, Julie S. Moldenhauer, Anne S. Bassett, Donna M. McDonald-McGinn

المصدر: Genes, Vol 14, Iss 1, p 160 (2023)

مصطلحات موضوعية: prenatal ultrasound, 22q11.2 deletion syndrome, noninvasive prenatal screening, preimplantation genetic testing, fetal cardiac anomaly, Genetics, QH426-470

الوصف: Diagnosis of a chromosome 22q11.2 microdeletion and its associated deletion syndrome (22q11.2DS) is optimally made early. We reviewed the available literature to provide contemporary guidance and recommendations related to the prenatal period. Indications for prenatal diagnostic testing include a parent or child with the 22q11.2 microdeletion or suggestive prenatal screening results. Definitive diagnosis by genetic testing of chorionic villi or amniocytes using a chromosomal microarray will detect clinically relevant microdeletions. Screening options include noninvasive prenatal screening (NIPS) and imaging. The potential benefits and limitations of each screening method should be clearly conveyed. NIPS, a genetic option available from 10 weeks gestational age, has a 70–83% detection rate and a 40–50% PPV for most associated 22q11.2 microdeletions. Prenatal imaging, usually by ultrasound, can detect several physical features associated with 22q11.2DS. Findings vary, related to detection methods, gestational age, and relative specificity. Conotruncal cardiac anomalies are more strongly associated than skeletal, urinary tract, or other congenital anomalies such as thymic hypoplasia or cavum septi pellucidi dilatation. Among others, intrauterine growth restriction and polyhydramnios are additional associated, prenatally detectable signs. Preconception genetic counselling should be offered to males and females with 22q11.2DS, as there is a 50% risk of transmission in each pregnancy. A previous history of a de novo 22q11.2 microdeletion conveys a low risk of recurrence. Prenatal genetic counselling includes an offer of screening or diagnostic testing and discussion of results. The goal is to facilitate optimal perinatal care.

وصف الملف: electronic resource

العلاقة: https://www.mdpi.com/2073-4425/14/1/160Test; https://doaj.org/toc/2073-4425Test

الوصول الحر: https://doaj.org/article/2748a8cabd9643f5834b47d25ca52448Test

المؤلفون: Lauren K. White, T. Blaine Crowley, Brenda Finucane, Emily J. McClellan, Sarah Donoghue, Sixto Garcia-Minaur, Gabriela M. Repetto, Matthias Fischer, Sebastien Jacquemont, Raquel E. Gur, Anne M. Maillard, Kirsten A. Donald, Anne S. Bassett, Ann Swillen, Donna M. McDonald-McGinn

المصدر: Genes, Vol 14, Iss 1, p 169 (2023)

مصطلحات موضوعية: copy number variations (CNVs), neurodevelopmental psychiatric disorders (NPDs), 22q11.2 deletion syndrome, Genetics, QH426-470

الوصف: Background: Research participant feedback is rarely collected; therefore, investigators have limited understanding regarding stakeholders’ (affected individuals/caregivers) motivation to participate. Members of the Genes to Mental Health Network (G2MH) surveyed stakeholders affected by copy number variants (CNVs) regarding perceived incentives for study participation, opinions concerning research priorities, and the necessity for future funding. Respondents were also asked about feelings of preparedness, research burden, and satisfaction with research study participation. Methods: Modified validated surveys were used to assess stakeholders´ views across three domains: (1) Research Study Enrollment, Retainment, Withdrawal, and Future Participation; (2) Overall Research Experience, Burden, and Preparedness; (3) Research Priorities and Obstacles. Top box score analyses were performed. Results: A total of 704 stakeholders´ responded from 29 countries representing 55 CNVs. The top reasons for initial participation in the research included reasons related to education and altruism. The top reasons for leaving a research study included treatment risks and side effects. The importance of sharing research findings and laboratory results with stakeholders was underscored by participants. Most stakeholders reported positive research experiences. Conclusions: This study provides important insight into how individuals and families affected with a rare CNV feel toward research participation and their overall experience in rare disease research. There are clear targets for areas of improvement for study teams, although many stakeholders reported positive research experiences. Key findings from this international survey may help advance collaborative research and improve the experience of participants, investigators, and other stakeholders moving forward.

وصف الملف: electronic resource

العلاقة: https://www.mdpi.com/2073-4425/14/1/169Test; https://doaj.org/toc/2073-4425Test

الوصول الحر: https://doaj.org/article/be6fa2ad773b49aba3f6f4db2b2c4a33Test