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American Journal of Medical Genetics. Part A

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https://www.readbyqxmd.com/read/28319323/further-evidence-for-specific-ifih1-mutation-as-a-cause-of-singleton-merten-syndrome-with-phenotypic-heterogeneity
#1
Maria Pettersson, Birgitta Bergendal, Johanna Norderyd, Daniel Nilsson, Britt-Marie Anderlid, Ann Nordgren, Anna Lindstrand
Singleton-Merten syndrome (MIM 182250) is an autosomal dominant inherited disorder characterized by early onset periodontitis, root resorption, osteopenia, osteoporosis, and aortic valve or thoracic aorta calcification. The disorder can have significant intrafamilial phenotypic variability. Here, we present a mother and daughter with Singleton-Merten syndrome harboring a previously described pathogenic missense mutation, c.2465G>A p.(Arg822Gln), in IFIH1 (interferon induced with helicase C domain 1), encoding MDA5 (Melanoma Differentiation-Associated protein 5)...
March 20, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28319315/maxillofacial-features-and-systemic-malformations-in-expanded-spectrum-hemifacial-microsomia
#2
Noah Cohen, Erica Cohen, Alberto Gaiero, Silvia Zecca, Graziella Fichera, Federica Baldi, Joseph Felix Giordanetto, Jacques Marie Mercier, Amnon Cohen
Hemifacial microsomia (HFM) is a rare, multisystemic congenital disease with estimated frequency of 1/26370 births in Europe. Most cases are sporadic and caused by unilateral abnormal morphogenesis of the first and second pharyngeal arches. The aim of this study is to define the types and frequency of maxillofacial and systemic malformations in HFM patients. This is a case series study of patients with HFM evaluated at a single institution. Data were acquired through history, physical examination, photographs, diagnostic radiology, and laboratory and analyzed by the FileMakerPro database on 95 patients (54F; 41M) of which 89 met the inclusion criteria...
March 20, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28317311/novel-pathogenic-variants-in-foxp3-in-fetuses-with-echogenic-bowel-and-skin-desquamation-identified-by-ultrasound
#3
Raymond J Louie, Queenie K-G Tan, Jennifer B Gilner, R Curtis Rogers, Noelle Younge, Stephanie B Wechsler, Marie T McDonald, Barbara Gordon, Christopher A Saski, Julie R Jones, Shelley J Chapman, Roger E Stevenson, John W Sleasman, Michael J Friez
Immunodysregulation, Polyendocrinopathy, Enteropathy, X-linked (IPEX) syndrome is a rare, X-linked recessive disease that affects regulatory T cells (Tregs) resulting in diarrhea, enteropathy, eczema, and insulin-dependent diabetes mellitus. IPEX syndrome is caused by pathogenic alterations in FOXP3 located at Xp11.23. FOXP3 encodes a transcription factor that interacts with several partners, including NFAT and NF-κB, and is necessary for the proper cellular differentiation of Tregs. Although variable, the vast majority of IPEX syndrome patients have onset of disease during infancy with severe enteropathy...
March 20, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28317263/maternal-uniparental-disomy-of-chromosome-15-and-concomitant-strc-and-catsper2-deletion-mediated-deafness-infertility-syndrome
#4
LETTER
Lisa Karger, Wahab A Khan, Rafaela Calabio, Ram Singh, Bixia Xiang, Arvind Babu, Ninette Cohen, Amy C Yang, Stuart A Scott
No abstract text is available yet for this article.
March 20, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28317256/thomas-h-shepard-m-d-pioneer-in-embryology-and-teratology
#5
Alan G Fantel, Janine E Polifka, Godfrey P Oakley
Dr. Thomas H. Shepard died on October 3, 2016 at the age of 93. He was a major figure in the fields of teratology, embryonic and fetal pathology, and pediatrics. He was beloved by his colleagues as he was by the many students and fellows whom he taught, mentored and befriended. His contributions to teratology are extraordinary and he is greatly missed. © 2017 Wiley Periodicals, Inc.
March 20, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28317252/oculo-facio-cardio-dental-syndrome-with-craniosynostosis-temporal-hypertrichosis-and-deafness
#6
James J O'Byrne, Eoghan Laffan, Dylan J Murray, William Reardon
We report the case of a 7-month-old girl with atypical oculo-facio-cardio-dental syndrome (OFCD). A novel de novo pathogenic mutation in the BCL6 interacting co-repressor gene (BCOR) (c.4540C>T; p.Arg1514*), was identified on the X chromosome. This case expands the phenotype of OFCD as it is the first report of a case presenting with craniosynostois, temporal hypertrichosis, supraorbital grooving, and underdevelopment of the midface.
March 20, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28317251/adding-value-to-genetic-testing-through-utilization-management-commercial-laboratory-s-experience
#7
LETTER
Gina K Londre, Christina A Zaleski, Jessie H Conta
No abstract text is available yet for this article.
March 20, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28296084/de-novo-loss-of-function-variants-in-stag2-are-associated-with-developmental-delay-microcephaly-and-congenital-anomalies
#8
Sureni V Mullegama, Steven D Klein, Milene V Mulatinho, Tharanga Niroshini Senaratne, Kathryn Singh, Dzung C Nguyen, Natalie M Gallant, Samuel P Strom, Shahnaz Ghahremani, Nagesh P Rao, Julian A Martinez-Agosto
The cohesin complex is an evolutionarily conserved multi-subunit protein complex which regulates sister chromatid cohesion during mitosis and meiosis. Additionally, the cohesin complex regulates DNA replication, DNA repair, and transcription. The core of the complex consists of four subunits: SMC1A, SMC3, RAD21, and STAG1/2. Loss-of-function mutations in many of these proteins have been implicated in human developmental disorders collectively termed "cohesinopathies." Through clinical exome sequencing (CES) of an 8-year-old girl with a clinical history of global developmental delay, microcephaly, microtia with hearing loss, language delay, ADHD, and dysmorphic features, we describe a heterozygous de novo variant (c...
March 11, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28266130/in-memoriam-laurence-e-karp-1939-2016
#9
Robert G Resta
No abstract text is available yet for this article.
March 7, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28266126/the-outcomes-of-31-cases-of-trisomy-13-diagnosed-in-utero-with-various-management-options
#10
Ken Takahashi, Aiko Sasaki, Seiji Wada, Yuka Wada, Keiko Tsukamoto, Rika Kosaki, Yushi Ito, Haruhiko Sago
There are few reports on the prognosis of prenatally diagnosed trisomy 13 in relation to postnatal management. The aim of this study was to report on the prenatal and postnatal outcomes and postnatal management of trisomy 13 fetuses that were prenatally diagnosed at our center between 2003 and 2015. The data were retrospectively reviewed from medical records. Of the 31 cases of trisomy 13, 12 patients were diagnosed before 22 weeks of gestation, and 19 were diagnosed at or after 22 weeks of gestation. Nine families opted for termination of the pregnancy, 14 fetuses died, and 8 were born alive...
March 7, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28266107/refining-patterns-of-joint-hypermobility-habitus-and-orthopedic-traits-in-joint-hypermobility-syndrome-and-ehlers-danlos-syndrome-hypermobility-type
#11
Silvia Morlino, Chiara Dordoni, Isabella Sperduti, Marina Venturini, Claudia Celletti, Filippo Camerota, Marina Colombi, Marco Castori
Joint hypermobility syndrome (JHS) and Ehlers-Danlos syndrome, hypermobility type (EDS-HT) are two overlapping heritable disorders (JHS/EDS-HT) recognized by separated sets of diagnostic criteria and still lack a confirmatory test. This descriptive research was aimed at better characterizing the clinical phenotype of JHS/EDS-HT with focus on available diagnostic criteria, and in order to propose novel features and assessment strategies. One hundred and eighty-nine (163 females, 26 males; age: 2-73 years) patients from two Italian reference centers were investigated for Beighton score, range of motion in 21 additional joints, rate and sites of dislocations and sprains, recurrent soft-tissue injuries, tendon and muscle ruptures, body mass index, arm span/height ratio, wrist and thumb signs, and 12 additional orthopedic features...
March 7, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28261977/tissue-specific-mosaicism-for-a-lethal-osteogenesis-imperfecta-col1a1-mutation-causes-mild-oi-eds-overlap-syndrome
#12
Sofie Symoens, Wouter Steyaert, Lynn Demuynck, Anne De Paepe, Karin E M Diderich, Fransiska Malfait, Paul J Coucke
Type I collagen is the predominant protein of connective tissues such as skin and bone. Mutations in the type I collagen genes (COL1A1 and COL1A2) mainly cause osteogenesis imperfecta (OI). We describe a patient with clinical signs of Ehlers-Danlos syndrome (EDS), including fragile skin, easy bruising, recurrent luxations, and fractures resembling mild OI. Biochemical collagen analysis of the patients' dermal fibroblasts showed faint overmodification of the type I collagen bands, a finding specific for structural defects in type I collagen...
March 6, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28256057/interrupted-bipartite-clavicle-as-a-diagnostic-clue-in-kabuki-syndrome
#13
Maria Haanpää, Helena Schlecht, Gauri Batra, Jill Clayton-Smith, Sofia Douzgou
Kabuki syndrome is a rare developmental disorder characterized by typical facial features, postnatal growth deficiency, mild to moderate intellectual disability, and minor skeletal anomalies. It is caused by mutations of the KMT2D and KDM6A genes while recently RAP1A and RAP1B mutations have been shown to rarely contribute to the pathogenesis. We report two patients' presentation of Kabuki syndrome caused by different KMT2D mutations, both including an interrupted/bipartite clavicle. The clinical diagnosis of Kabuki syndrome may be challenging, especially in younger patients and we suggest that the observation of a bipartite clavicle may be an additional diagnostic clue to prompt investigation for Kabuki syndrome...
March 3, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28256045/two-cases-of-legg-perthes-and-intellectual-disability-in-tricho-rhino-phalangeal-syndrome-type-1-associated-with-novel-trps1-mutations
#14
Jordana L Gilman, Heather A Newman, Rebecca Freeman, Kathryn E Singh, Rebecca L Puckett, David K Morohashi, Constance Stein, Kathryn Palomino, Robert Roger Lebel, Virginia E Kimonis
Tricho-Rhino-Phalangeal syndrome is a rare autosomal dominant genetic disorder caused by mutations in the TRPS1 gene. This malformation syndrome is characterized by distinctive craniofacial features including sparse scalp hair, bulbous tip of the nose, long flat philtrum, thin upper vermilion border, and protruding ears. Skeletal abnormalities include cone-shaped epiphyses at the phalanges, hip malformations, and short stature. In this report, we describe two patients with the physical manifestations and genotype of TRPS type I but with learning/intellectual disability not typically described as part of the syndrome...
March 3, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28240412/a-7q21-11-microdeletion-presenting-with-apparent-intellectual-disability-without-epilepsy
#15
LETTER
Azeem Siddique, Josh Willoughby, Alisdair McNeill
No abstract text is available yet for this article.
February 27, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28239978/sleep-disordered-breathing-and-its-management-in-children-with-achondroplasia
#16
Rossana Tenconi, Sonia Khirani, Alessandro Amaddeo, Caroline Michot, Geneviève Baujat, Vincent Couloigner, Livio De Sanctis, Syril James, Michel Zerah, Valérie Cormier-Daire, Brigitte Fauroux
Sleep-disordered breathing is a common feature in children with achondroplasia. The aim of our study was to review the poly(somno)graphic (P(S)G) findings and consequent treatments in children with achondroplasia followed in the national reference center for skeletal dysplasia. A retrospective review of the clinical charts and P(S)G of 43 consecutive children (mean age 3.9 ± 3.5 years) with achondroplasia seen over a period of 2 years was performed. Twenty four (59%) children had obstructive sleep apnea (OSA)...
February 27, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28190301/cornelia-de-lange-syndrome-and-molecular-implications-of-the-cohesin-complex-abstracts-from-the-7th-biennial-scientific-and-educational-symposium-2016
#17
Antonie D Kline, Ian D Krantz, Matthew A Deardorff, Katsuhiko Shirahige, Dale Dorsett, Jennifer L Gerton, Meng Wu, Devanshi Mehta, Jason A Mills, Cheri S Carrico, Sarah Noon, Pamela S Herrera, Julia A Horsfield, Chiara Bettale, Jeremy Morgan, Sylvia A Huisman, Jo Moss, Joseph McCleery, Marco Grados, Blake D Hansen, Siddharth Srivastava, Emily Taylor-Snell, Lynne M Kerr, Olivia Katz, Anne L Calof, Antonio Musio, Alena Egense, Richard E Haaland
Cornelia de Lange Syndrome (CdLS) is due to mutations in the genes for the structural and regulatory proteins that make up the cohesin complex, and is considered a cohesinopathy disorder or, more recently, a transcriptomopathy. New phenotypes have been recognized in this expanding field. There are multiple clinical issues facing individuals with all forms of CdLS, particularly in the neurodevelopmental system, but also gastrointestinal, cardiac, and musculoskeletal. Aspects of developmental and cell biology have found common endpoints in the biology of the cohesin complex, with improved understanding of the mechanisms, easier diagnostic tests, and the possibility of potential therapeutics, all major clinical implications for the individual with CdLS...
February 12, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28190295/high-prevalence-of-fatigue-in-adults-with-a-22q11-2-deletion-syndrome
#18
Elfi Vergaelen, Stephan Claes, Stefan Kempke, Ann Swillen
The 22q11.2 deletion syndrome (22q11.2DS) is a microdeletion syndrome with high phenotypic variability, including somatic disorders like congenital heart disease and psychiatric disorders such as schizophrenia, anxiety disorders, and mood disorders. Clinical observations suggest that many patients with 22q11.2DS suffer from severe fatigue. However, to the best of our knowledge, no previous study has investigated the potential association between 22q11.2DS and fatigue. Twenty-nine patients (mean age 26.8, 18-38 y) with 22q11...
February 12, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28190287/a-novel-de-novo-germline-mutation-glu40lys-in-akt3-causes-megalencephaly-with-growth-hormone-deficiency
#19
Masaki Takagi, Kazushige Dobashi, Keiko Nagahara, Mitsuhiro Kato, Gen Nishimura, Ryuji Fukuzawa, Satoshi Narumi, Tomonobu Hasegawa
Germline or somatic gain-of-function mutations in the v-akt murine thymoma viral oncogene homolog 3 (AKT3) have been reported to cause syndromic megalencephaly. We describe a novel germline mutation, p.Glu40Lys, in AKT3. Phenotypically, the patient presented with megalencephaly with hypotonia, apparent connective tissue laxity, and growth hormone (GH) deficiency. To our knowledge, this is the first instance of a patient with megalencephaly with GH deficiency, harboring a germline de novo mutation in AKT3. © 2016 Wiley Periodicals, Inc...
February 12, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28190284/foramen-magnum-compression-in-coffin-lowry-syndrome-a-case-report
#20
Jariya Upadia, Jerry Oakes, Austin Hamm, Anna C E Hurst, Nathaniel H Robin
Coffin-Lowry syndrome (CLS) is a rare genetic disorder inherited in an X-linked dominant pattern. Common manifestations include intellectual disability, growth retardation, dysmorphic facial features, and variable skeletal anomalies. Here we report a patient who first presented with episodes of apparent life-threatening events (ALTE) found to be caused by hydrocephalus and brainstem compression at the foramen magnum. Together with his small size, short limbs and fingers, and facial appearance, the narrowing of the foramen magnum lead to the initial clinical misdiagnosis of hypochondroplasia...
February 12, 2017: American Journal of Medical Genetics. Part A
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