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European Journal of Medical Genetics

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https://www.readbyqxmd.com/read/27915094/clinical-features-associated-with-ctnnb1-de-novo-loss-of-function-mutations-in-ten-individuals
#1
Mira Kharbanda, Daniela T Pilz, Susan Tomkins, Kate Chandler, Anand Saggar, Alan Fryer, Victoria McKay, Pedro Louro, Jill Clayton Smith, John Burn, Usha Kini, Anna De Burca, David R FitzPatrick, Esther Kinning, D D D Study
Loss of function mutations in CTNNB1 have been reported in individuals with intellectual disability [MIM #615075] associated with peripheral spasticity, microcephaly and central hypotonia, suggesting a recognisable phenotype associated with haploinsufficiency for this gene. Trio based whole exome sequencing via the Deciphering Developmental Disorders (DDD) study has identified eleven further individuals with de novo loss of function mutations in CTNNB1. Here we report detailed phenotypic information on ten of these...
November 30, 2016: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/27913285/autosomal-recessive-spinocerebellar-ataxia-20-report-of-a-new-patient-and-review-of-literature
#2
Anju Shukla, Priyanka Upadhyai, Jhanvi Shah, K Neethukrishna, Stephanie Bielas, K M Girisha
Inherited ataxias are an extremely heterogeneous group of disorders. Autosomal recessive spinocerebellar ataxia 20 (SCAR20) is a recently described disorder characterized by intellectual disability, ataxia, coarse facial features, progressive loss of Purkinje cells in the cerebellum and often hearing loss and skeletal abnormalities. Mutations in the gene SNX14, which plays an important role in autophagy, have been found to cause SCAR20. The unique clinical findings of progressive coarsening of facial features makes the clinical phenotype recognizable among the various hereditary ataxias...
November 29, 2016: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/27890788/genetic-testing-among-spanish-pediatric-neurologists-knowledge-attitudes-and-practices
#3
J Domínguez-Carral, J López-Pisón, A Macaya, M Bueno Campaña, M A García-Pérez, D Natera-de Benito
Advances in genetic testing applied to child neurology have enabled the development of genetic tests with greater sensitivity in elucidating an etiologic diagnosis for common neurological conditions. The objective of the current study was to examine child neurologists' perspectives and insights into genetic testing. We surveyed 118 Spanish child neurologists, exploring their knowledge, attitudes, and practices concerning genetic tests. All of them had requested at least one genetic test in the past six months...
November 25, 2016: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/27866050/boucher-neuh%C3%A3-user-syndrome-a-rare-cause-of-inherited-hypogonadotropic-hypogonadism-a-case-of-two-adult-siblings-with-two-novel-mutations-in-pnpla6
#4
Jakob H Langdahl, Anja L Frederiksen, Nina Nguyen, Klaus Brusgaard, Claus B Juhl
Boucher Neuhäuser Syndrome (BNS) is a rare clinical syndrome with autosomal recessive inheritance defined by early-onset ataxia, hypogonadism and chorioretinal dystrophy. We present two siblings diagnosed with BNS in late adult life identified with compound heterozygous state of two novel PNPLA6 mutations. Five healthy siblings were non- or heterozygous carriers of the mutations. The cases, which presented with ataxia in childhood and hypogonadotropic hypogonadism (HH), were diagnosed at age 17 and 25, respectively, when examined for delayed puberty...
November 16, 2016: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/27866049/novel-eln-mutation-in-a-family-with-supravalvular-aortic-stenosis-and-intracranial-aneurysm
#5
Anne Marie Jelsig, Zsolt Urban, Vishwanathan Hucthagowder, Henrik Nissen, Lilian Bomme Ousager
Pathogenic germline mutations in ELN can be detected in patients with supravalvular aortic stenosis. The mutation might occur de novo or be inherited following an autosomal dominant pattern of inheritance. In this report we describe a three-generation family suffering from supravalvular aortic stenosis, various other arterial stenoses, sudden death, and intracranial aneurysms. A frameshift mutation in exon 12, not described before, was detected in the affected family members. This report emphasises the importance of family history, genetic counselling, and demonstrates the great variability in the phenotype within a single SVAS family...
November 16, 2016: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/27866048/7p22-1-microduplication-syndrome-refinement-of-the-critical-region
#6
Luisa Ronzoni, Francesca Sofia Grassi, Lidia Pezzani, Arianna Tucci, Marco Baccarin, Susanna Esposito, Donatella Milani
7p22.1 microduplication syndrome is mainly characterized by developmental and speech delay, craniofacial dysmorphisms and skeletal abnormalities. The minimal critical region includes two OMIM genes: ACTB and RNF216. Here, we report on a girl carrying the smallest 7p22.1 microduplication detected to date, contributing to the delineation of the clinical phenotype of the 7p22.1 duplication syndrome and to the refinement of the minimal critical region. Our patient shares several major features of the 7p22.1 duplication syndrome, including craniofacial dysmorphisms and speech and motor delay, but she also presents with renal anomalies...
November 16, 2016: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/27838393/mutation-spectrum-of-nf1-gene-in-italian-patients-with-neurofibromatosis-type-1-using-ion-torrent-pgm%C3%A2-platform
#7
Francesco Calì, Valeria Chiavetta, Giuseppa Ruggeri, Maria Piccione, Angelo Selicorni, Daniela Palazzo, Maria Bonsignore, Anna Cereda, Maurizio Elia, Pinella Failla, Maria Grazia Figura, Agata Fiumara, Silvia Maitz, Giuseppa Maria Luana Mandarà, Teresa Mattina, Alda Ragalmuto, Corrado Romano, Martino Ruggieri, Roberto Salluzzo, Antonino Saporoso, Carmelo Schepis, Giovanni Sorge, Maria Spanò, Gaetano Tortorella, Valentino Romano
Neurofibromatosis type 1 (NF1) is caused by mutations of the NF1 gene and is one of the most common human autosomal dominant disorders. The patient shows different signs on the skin and other organs from early childhood. The best known are six or more café au lait spots, axillary or inguinal freckling, increased risk of developing benign nerve sheath tumours and plexiform neurofibromas. Mutation detection is complex, due to the large gene size, the large variety of mutations and the presence of pseudogenes...
November 9, 2016: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/27836748/-serpentine-like-syndrome-a-very-rare-multiple-malformation-syndrome-characterised-by-brachioesophagus-and-vertebral-anomalies
#8
Ana Beleza-Meireles, Patricia Steenhaut, Catheline Hocq, Philippe Clapuyt, Pierre Bernard, Christian Debauche, Yves Sznajer
"Serpentine-like syndrome" is a severe and rare association of multiple congenital malformations, characterised by brachioesophagus, secondary intrathoracic stomach, and vertebral anomalies. Other associated anomalies have been described, such as malposition and herniation of abdominal organs. We report the natural history of a baby girl born at 29 weeks of gestation with intra uterine growth restriction, short neck, large rachischisis from cervical to thoracic spine, a very short oesophagus, thoracic stomach associated with a midline diaphragmatic hernia, malrotated gut and median cleft lip...
November 9, 2016: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/27771472/haplotype-analysis-of-%C3%AE-thalassemia-chromosomes-reveals-heterogeneity-and-multiple-founders-in-ashkenazi-jews
#9
Adir Shaulov, Dvora Filon, Deborah Rund
α-Thalassemia (α-thal) is among the world's most common single gene disorders, generally attributed to a selective advantage of heterozygotes against malaria mortality. A high frequency of -α(3.7) deletion heterozygosity has been previously reported in Ashkenazi Jews despite lack of obvious malarial selection pressure in this population. Using haplotype and -α(3.7) subtype analysis we analyzed a subset of -α(3.7) homozygotes from various Israeli ethnic groups. We found a high frequency of the common Ia haplotype in Yemenite Jews and Arabs (54% and 13% respectively)...
October 19, 2016: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/27751966/concurrent-occurrence-of-an-inherited-16p13-11-microduplication-and-a-de-novo-19p13-3-microdeletion-involving-map2k2-in-a-patient-with-developmental-delay-distinctive-facial-features-and-lambdoid-synostosis
#10
Keiko Shimojima, Yumiko Ondo, Mayumi Matsufuji, Nozomi Sano, Hisashi Tsuru, Tatsuki Oyoshi, Nayuta Higa, Hiroshi Tokimura, Kazunori Arita, Toshiyuki Yamamoto
A female patient presented with developmental delay, distinctive facial features, and congenital anomalies, including a heart defect and premature lambdoid synostosis. The patient showed a paternally inherited 16p13.11 microduplication and a de novo 19p13.3 microdeletion involving the mitogen-activated protein kinase kinase 2 gene (MAP2K2), in which mutations cause the cardio-facio-cutaneous (CFC) syndrome. Reports of patients with overlapping 19p13.3 microdeletions of this region describe similar clinical manifestations including distinctive facial features: prominent forehead, horizontal/down-slanting palpebral fissures, long midface, pointed chin/angular jaw, sparse eyebrows, and underdeveloped cheekbones...
October 14, 2016: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/27742482/interventions-in-fetal-alcohol-spectrum-disorders-an-international-perspective
#11
Christie L M Petrenko, Michelle E Alto
Fetal alcohol spectrum disorders (FASD) are present across countries and cultures, with prevalence rates threatening to rise in the coming years. In order to support children and families with FASD around the world, researchers must work to disseminate and implement evidence-based interventions. However, each cultural context presents unique elements and barriers to the implementation process. This review considers the challenges of addressing FASD in an international context. It summarizes existing FASD interventions that have empirical support in the domains of parenting and education, attention and self-regulation, adaptive functioning, and nutrition and medication...
October 11, 2016: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/27729236/a-review-of-the-physical-features-of-the-fetal-alcohol-spectrum-disorders
#12
Miguel Del Campo, Kenneth Lyons Jones
The fetal alcohol spectrum of disorders (FASD) includes four diagnostic categories for the clinical consequences of prenatal alcohol exposure (PAE) in the unborn child. Physical features are necessary for the diagnosis of the fetal alcohol syndrome (FAS) and partial pFAS. Moreover, these features are specific and a diagnosis of FAS can be made even in the absence of knowledge of PAE. Not only growth deficits, microcephaly and the 3 facial features (short palpebral fissures, smooth philtrum and narrow vermillion of the upper lip) are characteristic, since other dysmorphic features particularly in the hands are key to the recognition of FAS...
October 10, 2016: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/27725288/a-23-years-follow-up-study-identifies-glut1-deficiency-syndrome-initially-diagnosed-as-complicated-hereditary-spastic-paraplegia
#13
Marina Diomedi, Ziv Gan-Or, Fabio Placidi, Patrick A Dion, Anna Szuto, Mario Bengala, Guy A Rouleau, Gian Luigi Gigli
Glucose transporter 1 (GLUT1) deficiency syndrome (GLUT1DS) was initially described in the early 90s as a sporadic clinical condition, characterized by seizures, motor and intellectual impairment with variable clinical presentation, and without a known genetic cause. Although causative mutations in SLC2A1 were later identified and much more is known about the disease, it still remains largely underdiagnosed. In the current study, a previously described Italian family was re-analyzed using whole exome sequencing and clinically re-evaluated...
October 7, 2016: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/27717910/a-case-of-constitutional-trisomy-3-mosaicism-in-a-teenage-patient-with-mild-phenotype
#14
Mariana Kekis, Sayaka Hashimoto, Carol Deeg, Inga Calloway, Aimee McKinney, Christine Shuss, Scott Hickey, Caroline Astbury
Constitutional mosaicism for trisomy 3 is extremely rare, with only a few postnatally diagnosed cases reported in the literature. We report a case of constitutional trisomy 3 mosaicism in a 16-year-old female, who presented with chronic joint pain, easy bruising, joint hypermobility and dysmorphic features, including long, thin facies, over-folded dysplastic ears, and Pierre-Robin sequence (PRS) with cleft palate. The patient was small at birth, had cleft palate repair, developed chronic joint pain at age 12, and has a history of mild leukopenia and mild thrombocytopenia...
October 4, 2016: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/27705751/before-and-after-nutritional-transformation-of-dysmorphism-in-a-case-of-costello-syndrome
#15
Annie T G Chiu, Lixing Zhu, Gary T K Mok, Gordon K C Leung, C B Chow, Brian H Y Chung
Costello syndrome is a type of RASopathy mapped to HRAS gene in chromosome 11, characterized by prenatal overgrowth, postnatal failure to thrive, classic facial gestalt and multisystem involvement including cardiomyopathy and intellectual disability. We present a 7 months old child with severe failure to thrive whose "subtle" facial dysmorphism at the time eluded clinical recognition of the syndrome. It was only with optimization of his nutritional status that dysmorphic features became more apparent, which affirmed the molecular diagnosis of Costello syndrome from exome sequencing...
October 2, 2016: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/27697599/chornobyl-30-years-later-radiation-pregnancies-and-developmental-anomalies-in-rivne-ukraine
#16
Wladimir Wertelecki, Christina D Chambers, Lyubov Yevtushok, Natalya Zymak-Zakutnya, Zoriana Sosyniuk, Serhiy Lapchenko, Bogdana Ievtushok, Diana Akhmedzhanova
In the 30 years since the Chornobyl nuclear power plant disaster, there is evidence of persistent levels of incorporated ionizing radiation in adults, children and pregnant women in the surrounding area. Measured levels of Cesium-137 vary by region, and may be influenced by dietary and water sources as well as proximity to nuclear power plants. Since 2000, comprehensive, population-based birth defects monitoring has been performed in selected regions of Ukraine to evaluate trends and to generate hypotheses regarding potential causes of unexplained variations in defect rates...
September 30, 2016: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/27667191/non-lethal-raine-syndrome-and-differential-diagnosis
#17
Siham Chafai Elalaoui, Nada Al-Sheqaih, Ilham Ratbi, Jill E Urquhart, James O'Sullivan, Sanjeev Bhaskar, Simon S Williams, Mustapha Elalloussi, Jaber Lyahyai, Leila Sbihi, Imane Cherkaoui Jaouad, Abdelhafid Sbihi, William G Newman, Abdelaziz Sefiani
Raine syndrome is a rare autosomal recessive bone dysplasia characterized by characteristic facial features with exophthalmos and generalized osteosclerosis. Amelogenesis imperfecta, hearing loss, seizures, and intracerebral calcification are apparent in some affected individuals. Originally, Raine syndrome was originally reported as a lethal syndrome. However, recently a milder phenotype, compatible with life, has been described. Biallelic variants inFAM20C, encoding aGolgi casein kinase involved in biomineralisation, have been identified in affected individuals...
September 22, 2016: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/27659713/prader-willi-syndrome-and-atypical-submicroscopic-15q11-q13-deletions-with-or-without-imprinting-defects
#18
Maaz Hassan, Merlin G Butler
We report a 20 year follow up on a Caucasian female, now 26 years of age, with Prader-Willi syndrome (PWS) harboring an atypical 15q11-q13 submicroscopic deletion of 100-200 kb in size first detected in 1996 involving the imprinting center, SNRPN gene and surrounding region. PWS is a rare complex disorder caused by the loss of paternally expressed genes in the 15q11-q13 region. With high resolution chromosomal microarray and methylation - specific MLPA analysis, we updated the genetic findings on our patient and found a 209,819bp deletion including the SNURF-SNRPN gene complex which includes the imprinting center and the SNORD116 region...
September 19, 2016: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/27659712/clinical-and-molecular-characterization-of-a-novel-ins-mutation-identified-in-patients-with-mody-phenotype
#19
Barbara Piccini, Rosangela Artuso, Lorenzo Lenzi, Monica Guasti, Giulia Braccesi, Federica Barni, Emilio Casalini, Sabrina Giglio, Sonia Toni
Correct diagnosis of Maturity-Onset Diabetes of the Young (MODY) is based on genetic tests requiring an appropriate subject selection by clinicians. Mutations in the insulin (INS) gene rarely occur in patients with MODY. This study is aimed at determining the genetic background and clinical phenotype in patients with suspected MODY. 34 patients with suspected MODY, negative for mutations in the GCK, HNF1α, HNF4α, HNF1β and PDX1 genes, were screened by next generation sequencing (NGS). A heterozygous INS mutation was identified in 4 members of the same family...
September 19, 2016: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/27639443/mycophenolate-mofetil-embryopathy-a-newly-recognized-teratogenic-syndrome
#20
Antonio Perez-Aytes, Purificacion Marin-Reina, Virginia Boso, Ana Ledo, John C Carey, Maximo Vento
Mycophenolate mofetil (MMF) is probably the most common employed immunosuppressant drug in recipients of solid organ transplant and in many autoimmune diseases. In vitro studies, a significant number of single clinical observations and a recent study from a group of different European teratogen information services, have provided very consistent data supporting the existence of a specific MMF embryopathy. The typical malformative pattern of MMF embryopathy includes external ear anomalies ranging from hypoplastic pinna (microtia) to complete absence of pinna (anotia); cleft lip, with or without cleft palate, and ocular anomalies as iris or chorioretinal coloboma and anophthalmia/microphthalmia...
September 14, 2016: European Journal of Medical Genetics
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