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Journal of Medical Genetics

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https://www.readbyqxmd.com/read/29666149/genetic-and-phenotypic-difference-in-cd8-t-cell-exhaustion-between-chronic-hepatitis-b-infection-and-hepatocellular-carcinoma
#1
Xiaochen Wang, Qifeng He, Haiyuan Shen, Xiao-Jie Lu, Beicheng Sun
BACKGROUND: Several recent studies published have suggested that T cell exhaustion exists both in chronic infection and cancer. However, to date, few studies have investigated their differences. Here we designed this study to explore the genetic and phenotypic difference in CD8+ T cell exhaustion between chronic hepatitis B (CHB) and hepatocellular carcinoma (HCC). METHODS: In this study, we assayed the phenotypes and functional states of CD8+ T cells separating from human CHB tissues and HCC tissues, and re-analyse the single-cell sequencing data (GSE98638) published previously...
April 17, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29661971/cm-score-a-validated-scoring-system-to-predict-cdkn2a-germline-mutations-in-melanoma-families-from-northern-europe
#2
Thomas P Potjer, Hildur Helgadottir, Mirjam Leenheer, Nienke van der Stoep, Nelleke A Gruis, Veronica Höiom, Håkan Olsson, Remco van Doorn, Hans F A Vasen, Christi J van Asperen, Olaf M Dekkers, Frederik J Hes
BACKGROUND: Several factors have been reported that influence the probability of a germline CDKN2A mutation in a melanoma family. Our goal was to create a scoring system to estimate this probability, based on a set of clinical features present in the patient and his or her family. METHODS: Five clinical features and their association with CDKN2A mutations were investigated in a training cohort of 1227 Dutch melanoma families (13.7% with CDKN2A mutation) using multivariate logistic regression...
April 16, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29661970/consensus-for-genes-to-be-included-on-cancer-panel-tests-offered-by-uk-genetics-services-guidelines-of-the-uk-cancer-genetics-group
#3
Amy Taylor, Angela F Brady, Ian M Frayling, Helen Hanson, Marc Tischkowitz, Clare Turnbull, Lucy Side
Genetic testing for hereditary cancer predisposition has evolved rapidly in recent years with the discovery of new genes, but there is much debate over the clinical utility of testing genes for which there are currently limited data regarding the degree of associated cancer risk. To address the discrepancies that have arisen in the provision of these tests across the UK, the UK Cancer Genetics Group facilitated a 1-day workshop with representation from the majority of National Health Service (NHS) clinical genetics services...
April 16, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29661969/mutations-in-plasmalemma-vesicle-associated-protein-cause-severe-syndromic-protein-losing-enteropathy
#4
Ilse Julia Broekaert, Kerstin Becker, Ingo Gottschalk, Friederike Körber, Jörg Dötsch, Holger Thiele, Janine Altmüller, Peter Nürnberg, Christoph Hünseler, Sebahattin Cirak
BACKGROUND: Protein-losing enteropathy (PLE) is characterised by gastrointestinal protein leakage due to loss of mucosal integrity or lymphatic abnormalities. PLE can manifest as congenital diarrhoea and should be differentiated from other congenital diarrhoeal disorders. Primary PLEs are genetically heterogeneous and the underlying genetic defects are currently emerging. OBJECTIVES: We report an infant with fatal PLE for whom we aimed to uncover the underlying pathogenic mutation...
April 16, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29661968/correction-oral-pharmacological-chaperone-migalastat-compared-with-enzyme-replacement-therapy-in-fabry-disease-18-month-results-from-the-randomised-phase-iii-attract-study
#5
(no author information available yet)
No abstract text is available yet for this article.
April 16, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29632148/-in-vivo-bioassay-to-test-the-pathogenicity-of-missense-human-aip-variants
#6
Elena Daniela Aflorei, Benjamin Klapholz, Chenghao Chen, Serban Radian, Anca Neluta Dragu, Nina Moderau, Chrisostomos Prodromou, Paulo S Ribeiro, Ralf Stanewsky, Márta Korbonits
BACKGROUND: Heterozygous germline loss-of-function mutations in the aryl hydrocarbon receptor-interacting protein gene ( AIP ) predispose to childhood-onset pituitary tumours. The pathogenicity of missense variants may pose difficulties for genetic counselling and family follow-up. OBJECTIVE: To develop an in viv o system to test the pathogenicity of human AIP mutations using the fruit fly Drosophila melanogaster . METHODS: We generated a null mutant of the Drosophila AIP orthologue, CG1847, a gene located on the Xchromosome, which displayed lethality at larval stage in hemizygous knockout male mutants ( CG1847exon1_3 )...
April 9, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29622727/current-detection-rates-and-time-to-detection-of-all-identifiable-brca-carriers-in-the-greater-london-population
#7
Ranjit Manchanda, Oleg Blyuss, Faiza Gaba, Vladimir Sergeevich Gordeev, Chris Jacobs, Matthew Burnell, Carmen Gan, Rohan Taylor, Clare Turnbull, Rosa Legood, Alexey Zaikin, Antonis C Antoniou, Usha Menon, Ian Jacobs
BACKGROUND: BRCA carrier identification offers opportunities for early diagnoses, targeted treatment and cancer prevention. We evaluate BRCA- carrier detection rates in general and Ashkenazi Jewish (AJ) populations across Greater London and estimate time-to-detection of all identifiable BRCA carriers. METHODS: BRCA carrier data from 1993 to 2014 were obtained from National Health Service genetic laboratories and compared with modelled predictions of BRCA prevalence from published literature and geographical data from UK Office for National Statistics...
April 5, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29618507/further-delineation-of-the-mecp2-duplication-syndrome-phenotype-in-59-french-male-patients-with-a-particular-focus-on-morphological-and-neurological-features
#8
Marguerite Miguet, Laurence Faivre, Jeanne Amiel, Mathilde Nizon, Renaud Touraine, Fabienne Prieur, Laurent Pasquier, Mathilde Lefebvre, Julien Thevenon, Christèle Dubourg, Sophie Julia, Catherine Sarret, Ganaëlle Remerand, Christine Francannet, Fanny Laffargue, Odile Boespflug-Tanguy, Albert David, Bertrand Isidor, Jacqueline Vigneron, Bruno Leheup, Laetitia Lambert, Christophe Philippe, Mylène Béri-Dexheimer, Jean-Marie Cuisset, Joris Andrieux, Ghislaine Plessis, Annick Toutain, Laurent Guibaud, Valérie Cormier-Daire, Marlene Rio, Jean-Paul Bonnefont, Bernard Echenne, Hubert Journel, Lydie Burglen, Sandrine Chantot-Bastaraud, Thierry Bienvenu, Clarisse Baumann, Laurence Perrin, Séverine Drunat, Pierre-Simon Jouk, Klaus Dieterich, Françoise Devillard, Didier Lacombe, Nicole Philip, Sabine Sigaudy, Anne Moncla, Chantal Missirian, Catherine Badens, Nathalie Perreton, Christel Thauvin-Robinet, Réseau AChro-Puce, Jean-Michel Pedespan, Caroline Rooryck, Cyril Goizet, Catherine Vincent-Delorme, Bénédicte Duban-Bedu, Nadia Bahi-Buisson, Alexandra Afenjar, Kim Maincent, Delphine Héron, Jean-Luc Alessandri, Dominique Martin-Coignard, Gaëtan Lesca, Massimiliano Rossi, Martine Raynaud, Patrick Callier, Anne-Laure Mosca-Boidron, Nathalie Marle, Charles Coutton, Véronique Satre, Cédric Le Caignec, Valérie Malan, Serge Romana, Boris Keren, Anne-Claude Tabet, Valérie Kremer, Sophie Scheidecker, Adeline Vigouroux, Marilyn Lackmy-Port-Lis, Damien Sanlaville, Marianne Till, Maryline Carneiro, Brigitte Gilbert-Dussardier, Marjolaine Willems, Hilde Van Esch, Vincent Des Portes, Salima El Chehadeh
The Xq28 duplication involving the MECP2 gene ( MECP2 duplication) has been mainly described in male patients with severe developmental delay (DD) associated with spasticity, stereotypic movements and recurrent infections. Nevertheless, only a few series have been published. We aimed to better describe the phenotype of this condition, with a focus on morphological and neurological features. Through a national collaborative study, we report a large French series of 59 affected males with interstitial MECP2 duplication...
April 4, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29618506/biochemical-and-molecular-characterisation-of-neurological-wilson-disease
#9
Go Hun Seo, Yoon-Myung Kim, Seak Hee Oh, Sun Ju Chung, In Hee Choi, Gu-Hwan Kim, Mi-Sun Yum, Jin-Ho Choi, Kyung Mo Kim, Tae-Sung Ko, Beom Hee Lee, Han-Wook Yoo
BACKGROUND: To identify biochemical and genetic features that characterise neurological Wilson disease as a distinct disease subgroup. METHODS: Detailed biochemical profiles and genotypic characteristics of neurological (86 patients) and hepatic subgroups (233 patients) from 368 unrelated Korean families were analysed. RESULTS: Compared with patients in the hepatic subgroup, patients in the neurological subgroup had a later age at onset, a higher proportion with Kayser-Fleischer rings and higher serum creatinine levels, and a lower proportion with favourable outcome (62% vs 80%, P<0...
April 4, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29602790/retrospective-natural-history-of-thymidine-kinase-2-deficiency
#10
Caterina Garone, Robert W Taylor, Andrés Nascimento, Joanna Poulton, Carl Fratter, Cristina Domínguez-González, Julie C Evans, Mariana Loos, Pirjo Isohanni, Anu Suomalainen, Dipak Ram, M Imelda Hughes, Robert McFarland, Emanuele Barca, Carlos Lopez Gomez, Sandeep Jayawant, Neil D Thomas, Adnan Y Manzur, Karin Kleinsteuber, Miguel A Martin, Timothy Kerr, Grainne S Gorman, Ewen W Sommerville, Patrick F Chinnery, Monika Hofer, Christoph Karch, Jeffrey Ralph, Yolanda Cámara, Marcos Madruga-Garrido, Jana Domínguez-Carral, Carlos Ortez, Sonia Emperador, Julio Montoya, Anupam Chakrapani, Joshua F Kriger, Robert Schoenaker, Bruce Levin, John L P Thompson, Yuelin Long, Shamima Rahman, Maria Alice Donati, Salvatore DiMauro, Michio Hirano
BACKGROUND: Thymine kinase 2 (TK2) is a mitochondrial matrix protein encoded in nuclear DNA and phosphorylates the pyrimidine nucleosides: thymidine and deoxycytidine. Autosomal recessive TK2 mutations cause a spectrum of disease from infantile onset to adult onset manifesting primarily as myopathy. OBJECTIVE: To perform a retrospective natural history study of a large cohort of patients with TK2 deficiency. METHODS: The study was conducted by 42 investigators across 31 academic medical centres...
March 30, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29599419/chitayat-hall-and-schaaf-yang-syndromes-a-common-aetiology-expanding-the-phenotype-of-magel2-related-disorders
#11
Rebekah Jobling, Dimitri James Stavropoulos, Christian R Marshall, Cheryl Cytrynbaum, Michelle M Axford, Vanessa Londero, Sharon Moalem, Jennifer Orr, Francis Rossignol, Fatima Daniela Lopes, Julie Gauthier, Nathalie Alos, Rosemarie Rupps, Margaret McKinnon, Shelin Adam, Malgorzata J M Nowaczyk, Susan Walker, Stephen W Scherer, Christina Nassif, Fadi F Hamdan, Cheri L Deal, Jean-François Soucy, Rosanna Weksberg, Patrick Macleod, Jacques L Michaud, David Chitayat
BACKGROUND: Chitayat-Hall syndrome, initially described in 1990, is a rare condition characterised by distal arthrogryposis, intellectual disability, dysmorphic features and hypopituitarism, in particular growth hormone deficiency. The genetic aetiology has not been identified. METHODS AND RESULTS: We identified three unrelated families with a total of six affected patients with the clinical manifestations of Chitayat-Hall syndrome. Through whole exome or whole genome sequencing, pathogenic variants in the MAGEL2 gene were identified in all affected patients...
March 29, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29599418/new-workflow-for-classification-of-genetic-variants-pathogenicity-applied-to-hereditary-recurrent-fevers-by-the-international-study-group-for-systemic-autoinflammatory-diseases-insaid
#12
Marielle E Van Gijn, Isabella Ceccherini, Yael Shinar, Ellen C Carbo, Mariska Slofstra, Juan I Arostegui, Guillaume Sarrabay, Dorota Rowczenio, Ebun Omoyımnı, Banu Balci-Peynircioglu, Hal M Hoffman, Florian Milhavet, Morris A Swertz, Isabelle Touitou
BACKGROUND: Hereditary recurrent fevers (HRFs) are rare inflammatory diseases sharing similar clinical symptoms and effectively treated with anti-inflammatory biological drugs. Accurate diagnosis of HRF relies heavily on genetic testing. OBJECTIVES: This study aimed to obtain an experts' consensus on the clinical significance of gene variants in four well-known HRF genes: MEFV , TNFRSF1A , NLRP3 and MVK . METHODS: We configured a MOLGENIS web platform to share and analyse pathogenicity classifications of the variants and to manage a consensus-based classification process...
March 29, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29574422/maternal-variants-in-nlrp-and-other-maternal-effect-proteins-are-associated-with-multilocus-imprinting-disturbance-in-offspring
#13
Matthias Begemann, Faisal I Rezwan, Jasmin Beygo, Louise E Docherty, Julia Kolarova, Christopher Schroeder, Karin Buiting, Kamal Chokkalingam, Franziska Degenhardt, Emma L Wakeling, Stephanie Kleinle, Daniela González Fassrainer, Barbara Oehl-Jaschkowitz, Claire L S Turner, Michal Patalan, Maria Gizewska, Gerhard Binder, Can Thi Bich Ngoc, Vu Chi Dung, Sarju G Mehta, Gareth Baynam, Julian P Hamilton-Shield, Sara Aljareh, Oluwakemi Lokulo-Sodipe, Rachel Horton, Reiner Siebert, Miriam Elbracht, Isabel Karen Temple, Thomas Eggermann, Deborah J G Mackay
BACKGROUND: Genomic imprinting results from the resistance of germline epigenetic marks to reprogramming in the early embryo for a small number of mammalian genes. Genetic, epigenetic or environmental insults that prevent imprints from evading reprogramming may result in imprinting disorders, which impact growth, development, behaviour and metabolism. We aimed to identify genetic defects causing imprinting disorders by whole-exome sequencing in families with one or more members affected by multilocus imprinting disturbance...
March 24, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29572253/inframe-deletion-of-human-espn-is-associated-with-deafness-vestibulopathy-and-vision-impairment
#14
Zubair M Ahmed, Thomas J Jaworek, Gowri N Sarangdhar, Lili Zheng, Khitab Gul, Shaheen N Khan, Thomas B Friedman, Robert A Sisk, James R Bartles, Sheikh Riazuddin, Saima Riazuddin
BACKGROUND: Usher syndrome (USH) is a neurosensory disorder characterised by deafness, variable vestibular areflexia and vision loss. The aim of the study was to identify the genetic defect in a Pakistani family (PKDF1051) segregating USH. METHODS: Genome-wide linkage analysis was performed by using an Illumina linkage array followed by Sanger and exome sequencing. Heterologous cells and mouse organ of Corti explant-based transfection assays were used for functional evaluations...
March 23, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29572252/functional-and-clinical-relevance-of-novel-mutations-in-a-large-cohort-of-patients-with-cockayne-syndrome
#15
Nadege Calmels, Elena Botta, Nan Jia, Heather Fawcett, Tiziana Nardo, Yuka Nakazawa, Manuela Lanzafame, Shinichi Moriwaki, Katsuo Sugita, Masaya Kubota, Cathy Obringer, Marie-Aude Spitz, Miria Stefanini, Vincent Laugel, Donata Orioli, Tomoo Ogi, Alan Robert Lehmann
BACKGROUND: Cockayne syndrome (CS) is a rare, autosomal recessive multisystem disorder characterised by prenatal or postnatal growth failure, progressive neurological dysfunction, ocular and skeletal abnormalities and premature ageing. About half of the patients with symptoms diagnostic for CS show cutaneous photosensitivity and an abnormal cellular response to UV light due to mutations in either the ERCC8 / CSA or ERCC6 / CSB gene. Studies performed thus far have failed to delineate clear genotype-phenotype relationships...
March 23, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29563141/monosomy-18p-is-a-risk-factor-for-facioscapulohumeral-dystrophy
#16
Judit Balog, Remko Goossens, Richard J L F Lemmers, Kirsten R Straasheijm, Patrick J van der Vliet, Anita van den Heuvel, Chiara Cambieri, Nicolas Capet, Léonard Feasson, Veronique Manel, Julian Contet, Marjolein Kriek, Colleen M Donlin-Smith, Claudia A L Ruivenkamp, Patricia Heard, Stephen J Tapscott, Jannine D Cody, Rabi Tawil, Sabrina Sacconi, Silvère M van der Maarel
BACKGROUND: 18p deletion syndrome is a rare disorder caused by partial or full monosomy of the short arm of chromosome 18. Clinical symptoms caused by 18p hemizygosity include cognitive impairment, mild facial dysmorphism, strabismus and ptosis. Among other genes, structural maintenance of chromosomes flexible hinge domain containing 1 ( SMCHD1 ) is hemizygous in most patients with 18p deletions. Digenic inheritance of a SMCHD1 mutation and a moderately sized D4Z4 repeat on a facioscapulohumeral muscular dystrophy (FSHD) permissive genetic background of chromosome 4 can cause FSHD type 2 (FSHD2)...
March 21, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29535157/mainstreamed-genetic-testing-for-women-with-ovarian-cancer-first-year-experience
#17
Belinda Rahman, Anne Lanceley, Rebecca S Kristeleit, Jonathan A Ledermann, Michelle Lockley, Mary McCormack, Tim Mould, Lucy Side
BACKGROUND: Ovarian cancer is the fifth most common cause of cancer death for women in the UK. Up to 18% of cases can be attributed to germline mutations in BRCA1 and BRCA2 genes. Identifying patients who carry a BRCA mutation provides important information about potential response to treatment and eligibility for therapies such as poly ADP ribose polymerase (PARP) inhibitors. Implementation of systematic genetic testing of patients with ovarian cancer via oncology clinics (mainstreamed genetic testing, MGT) is increasing...
March 13, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29514873/multiplex-genomewide-association-analysis-of-breast-milk-fatty-acid-composition-extends-the-phenotypic-association-and-potential-selection-of-fads1-variants-to-arachidonic-acid-a-critical-infant-micronutrient
#18
Josyf C Mychaleckyj, Uma Nayak, E Ross Colgate, Dadong Zhang, Tommy Carstensen, Shahnawaz Ahmed, Tahmeed Ahmed, Alexander J Mentzer, Masud Alam, Beth D Kirkpatrick, Rashidul Haque, Abu Syed Golam Faruque, William A Petri
BACKGROUND: Breast milk is the sole nutrition source during exclusive breastfeeding, and polyunsaturated fatty acids (FAs) are critical micronutrients in infant physical and cognitive development. There has been no prior genomewide association study of breast milk, hence our objective was to test for genetic association with breast milk FA composition. METHODS: We measured the fractional composition of 26 individual FAs in breast milk samples from three cohorts totalling 1142 Bangladeshi mothers whose infants were genotyped on the Illumina MEGA chip and replicated on a custom Affymetrix 30K SNP array (n=616)...
March 7, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29514872/homozygous-chst11-mutation-in-chondrodysplasia-brachydactyly-overriding-digits-clino-symphalangism-and-synpolydactyly
#19
Rana Muhammad Kamran Shabbir, Gökhan Nalbant, Nafees Ahmad, Sajid Malik, Aslıhan Tolun
BACKGROUND: Carbohydrate sulfotransferase 11 (CHST11) is a membrane protein of Golgi that catalyses the transfer of sulfate to position 4 of the N-acetylgalactosamine residues of chondroitin. Chondroitin sulfate is the predominant proteoglycan in cartilage, and its sulfation is important in the developing growth plate of cartilage. A homozygous deletion encompassing part of the gene and the embedded miRNA MIR3922 had been detected in a woman with hand/foot malformation and malignant lymphoproliferative disease...
March 7, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29500247/whole-exome-sequencing-identifies-mutations-in-10-of-patients-with-familial-non-syndromic-cleft-lip-and-or-palate-in-genes-mutated-in-well-known-syndromes
#20
Mirta Basha, Bénédicte Demeer, Nicole Revencu, Raphael Helaers, Stephanie Theys, Sami Bou Saba, Odile Boute, Bernard Devauchelle, Geneviève Francois, Bénédicte Bayet, Miikka Vikkula
BACKGROUND: Oral clefts, that is, clefts of the lip and/or cleft palate (CL/P), are the most common craniofacial birth defects with an approximate incidence of ~1/700. To date, physicians stratify patients with oral clefts into either syndromic CL/P (syCL/P) or non-syndromic CL/P (nsCL/P) depending on whether the CL/P is associated with another anomaly or not. In general, patients with syCL/P follow Mendelian inheritance, while those with nsCL/P have a complex aetiology and, as such, do not adhere to Mendelian inheritance...
March 2, 2018: Journal of Medical Genetics
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