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Human Genomics

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https://www.readbyqxmd.com/read/28637487/the-nf1-somatic-mutational-landscape-in-sporadic-human-cancers
#1
REVIEW
Charlotte Philpott, Hannah Tovell, Ian M Frayling, David N Cooper, Meena Upadhyaya
BACKGROUND: Neurofibromatosis type 1 (NF1: Online Mendelian Inheritance in Man (OMIM) #162200) is an autosomal dominantly inherited tumour predisposition syndrome. Heritable constitutional mutations in the NF1 gene result in dysregulation of the RAS/MAPK pathway and are causative of NF1. The major known function of the NF1 gene product neurofibromin is to downregulate RAS. NF1 exhibits variable clinical expression and is characterized by benign cutaneous lesions including neurofibromas and café-au-lait macules, as well as a predisposition to various types of malignancy, such as breast cancer and leukaemia...
June 21, 2017: Human Genomics
https://www.readbyqxmd.com/read/28545550/genetic-variation-in-neurodegenerative-diseases-and-its-accessibility-in-the-model-organism-caenorhabditis-elegans
#2
REVIEW
Yiru Anning Wang, Jan Edward Kammenga, Simon Crawford Harvey
BACKGROUND: Neurodegenerative diseases (NGDs) such as Alzheimer's and Parkinson's are debilitating and largely untreatable conditions strongly linked to age. The clinical, neuropathological, and genetic components of NGDs indicate that neurodegeneration is a complex trait determined by multiple genes and by the environment. MAIN BODY: The symptoms of NGDs differ among individuals due to their genetic background, and this variation affects the onset and progression of NGD and NGD-like states...
May 25, 2017: Human Genomics
https://www.readbyqxmd.com/read/28532469/a-pipeline-combining-multiple-strategies-for-prioritizing-heterozygous-variants-for-the-identification-of-candidate-genes-in-exome-datasets
#3
Teresa Requena, Alvaro Gallego-Martinez, Jose A Lopez-Escamez
BACKGROUND: The identification of disease-causing variants in autosomal dominant diseases using exome-sequencing data remains a difficult task in small pedigrees. We combined several strategies to improve filtering and prioritizing of heterozygous variants using exome-sequencing datasets in familial Meniere disease: an in-house Pathogenic Variant (PAVAR) score, the Variant Annotation Analysis and Search Tool (VAAST-Phevor), Exomiser-v2, CADD, and FATHMM. We also validated the method by a benchmarking procedure including causal mutations in synthetic exome datasets...
May 22, 2017: Human Genomics
https://www.readbyqxmd.com/read/28511696/variant-effect-prediction-tools-assessed-using-independent-functional-assay-based-datasets-implications-for-discovery-and-diagnostics
#4
Khalid Mahmood, Chol-Hee Jung, Gayle Philip, Peter Georgeson, Jessica Chung, Bernard J Pope, Daniel J Park
BACKGROUND: Genetic variant effect prediction algorithms are used extensively in clinical genomics and research to determine the likely consequences of amino acid substitutions on protein function. It is vital that we better understand their accuracies and limitations because published performance metrics are confounded by serious problems of circularity and error propagation. Here, we derive three independent, functionally determined human mutation datasets, UniFun, BRCA1-DMS and TP53-TA, and employ them, alongside previously described datasets, to assess the pre-eminent variant effect prediction tools...
May 16, 2017: Human Genomics
https://www.readbyqxmd.com/read/28499422/identification-of-novel-genes-associated-with-hiv-1-latency-by-analysis-of-histone-modifications
#5
LETTER
Kyung-Chang Kim, Sunyoung Lee, Junseock Son, Younghyun Shin, Cheol-Hee Yoon, Chun Kang, Byeong-Sun Choi
BACKGROUND: A reservoir of HIV-1 is a major obstacle in eliminating HIV-1 in patients because it can reactivate in stopping antiretroviral therapy (ART). Histone modifications, such as acetylation and methylation, play a critical role in the organization of chromatin domains and the up- or downregulation of gene expression. Although many studies have reported that an epigenetic mechanism is strongly involved in the maintenance of HIV-1 transcriptional latency, neither the epigenetic control of viral replication nor how HIV-1 latency is maintained is not fully understood...
May 12, 2017: Human Genomics
https://www.readbyqxmd.com/read/28499412/genome-wide-dna-methylation-analysis-reveals-hypomethylation-in-the-low-cpg-promoter-regions-in-lymphoblastoid-cell-lines
#6
Itsuki Taniguchi, Chihiro Iwaya, Keizo Ohnaka, Hiroki Shibata, Ken Yamamoto
BACKGROUND: Epidemiological studies of DNA methylation profiles may uncover the molecular mechanisms through which genetic and environmental factors contribute to the risk of multifactorial diseases. There are two types of commonly used DNA bioresources, peripheral blood cells (PBCs) and EBV-transformed lymphoblastoid cell lines (LCLs), which are available for genetic epidemiological studies. Therefore, to extend our knowledge of the difference in DNA methylation status between LCLs and PBCs is important in human population studies that use these DNA sources to elucidate the epigenetic risks for multifactorial diseases...
May 12, 2017: Human Genomics
https://www.readbyqxmd.com/read/28472998/in-silico-prioritization-and-further-functional-characterization-of-spink1-intronic-variants
#7
Wen-Bin Zou, Hao Wu, Arnaud Boulling, David N Cooper, Zhao-Shen Li, Zhuan Liao, Jian-Min Chen, Claude Férec
BACKGROUND: SPINK1 (serine protease inhibitor, kazal-type, 1), which encodes human pancreatic secretory trypsin inhibitor, is one of the most extensively studied genes underlying chronic pancreatitis. Recently, based upon data from qualitative reverse transcription-PCR (RT-PCR) analyses of transfected HEK293T cells, we concluded that 24 studied SPINK1 intronic variants were not of pathological significance, the sole exceptions being two canonical splice site variants (i.e., c.87 + 1G > A and c...
May 4, 2017: Human Genomics
https://www.readbyqxmd.com/read/28427458/whole-exome-sequencing-identifies-novel-candidate-predisposition-genes-for-familial-polycythemia-vera
#8
Elina A M Hirvonen, Esa Pitkänen, Kari Hemminki, Lauri A Aaltonen, Outi Kilpivaara
BACKGROUND: Polycythemia vera (PV), characterized by massive production of erythrocytes, is one of the myeloproliferative neoplasms. Most patients carry a somatic gain-of-function mutation in JAK2, c.1849G > T (p.Val617Phe), leading to constitutive activation of JAK-STAT signaling pathway. Familial clustering is also observed occasionally, but high-penetrance predisposition genes to PV have remained unidentified. RESULTS: We studied the predisposition to PV by exome sequencing (three cases) in a Finnish PV family with four patients...
April 20, 2017: Human Genomics
https://www.readbyqxmd.com/read/28302172/transcriptome-analysis-of-bronchoalveolar-lavage-fluid-from-children-with-severe-mycoplasma-pneumoniae-pneumonia-reveals-novel-gene-expression-and-immunodeficiency
#9
Kuo Wang, Man Gao, Mingyue Yang, Fanzheng Meng, Deli Li, Ruihua Lu, Yan Wang, Huadong Zhuang, Mengyao Li, Genhong Cheng, Xiaosong Wang
BACKGROUND: A growing number of severe Mycoplasma pneumoniae pneumonia (MPP) cases have been reported recently. However, the pathogenesis of severe MPP is not clear. In the current study, transcriptome sequencing was used to identify gene expression and alternative splicing profiles to provide insights into the pathogenesis of severe MPP. METHODS: RNAs of bronchoalveolar lavage fluid (BALF) samples from three severe MPP children and three mild MPP children were analyzed respectively by deep sequencing followed by computational annotation and quantification...
March 16, 2017: Human Genomics
https://www.readbyqxmd.com/read/28302154/the-israeli-national-genetic-database-a-10-year-experience
#10
Joël Zlotogora, George P Patrinos
BACKGROUND: The Israeli National and Ethnic Mutation database ( http://server.goldenhelix.org/israeli ) was launched in September 2006 on the ETHNOS software to include clinically relevant genomic variants reported among Jewish and Arab Israeli patients. In 2016, the database was reviewed and corrected according to ClinVar ( https://www.ncbi.nlm.nih.gov/clinvar ) and ExAC ( http://exac.broadinstitute.org ) database entries. The present article summarizes some key aspects from the development and continuous update of the database over a 10-year period, which could serve as a paradigm of successful database curation for other similar resources...
March 16, 2017: Human Genomics
https://www.readbyqxmd.com/read/28257648/genetic-determinants-of-clinical-heterogeneity-of-the-coronary-artery-disease-in-the-population-of-hyderabad-india
#11
Rayabarapu Pranavchand, Arramraju Sreenivas Kumar, Battini Mohan Reddy
BACKGROUND: Genetic predisposition to the clinical categories of coronary artery disease (anatomical viz., insignificant, single, double, and triple vessel diseases and phenotypic severity categories viz., angina, acute coronary syndrome, and myocardial infarction) is poorly understood. Particularly, the apolipoprotein genes clustered at 11q23.3 chromosomal region play a vital role in cholesterol homeostasis, and a large number of SNPs identified in this region need to be explored for their association with the clinical categories of CAD...
March 4, 2017: Human Genomics
https://www.readbyqxmd.com/read/28219410/copy-number-variation-of-human-amy1-is-a-minor-contributor-to-variation-in-salivary-amylase-expression-and-activity
#12
Danielle Carpenter, Laura M Mitchell, John A L Armour
BACKGROUND: Salivary amylase in humans is encoded by the copy variable gene AMY1 in the amylase gene cluster on chromosome 1. Although the role of salivary amylase is well established, the consequences of the copy number variation (CNV) at AMY1 on salivary amylase protein production are less well understood. The amylase gene cluster is highly structured with a fundamental difference between odd and even AMY1 copy number haplotypes. In this study, we aimed to explore, in samples from 119 unrelated individuals, not only the effects of AMY1 CNV on salivary amylase protein expression and amylase enzyme activity but also whether there is any evidence for underlying difference between the common haplotypes containing odd numbers of AMY1 and even copy number haplotypes...
February 20, 2017: Human Genomics
https://www.readbyqxmd.com/read/28209183/variants-in-congenital-hypogonadotrophic-hypogonadism-genes-identified-in-an-indonesian-cohort-of-46-xy-under-virilised-boys
#13
Katie L Ayers, Aurore Bouty, Gorjana Robevska, Jocelyn A van den Bergen, Achmad Zulfa Juniarto, Nurin Aisyiyah Listyasari, Andrew H Sinclair, Sultana M H Faradz
BACKGROUND: Congenital hypogonadotrophic hypogonadism (CHH) and Kallmann syndrome (KS) are caused by disruption to the hypothalamic-pituitary-gonadal (H-P-G) axis. In particular, reduced production, secretion or action of gonadotrophin-releasing hormone (GnRH) is often responsible. Various genes, many of which play a role in the development and function of the GnRH neurons, have been implicated in these disorders. Clinically, CHH and KS are heterogeneous; however, in 46,XY patients, they can be characterised by under-virilisation phenotypes such as cryptorchidism and micropenis or delayed puberty...
February 16, 2017: Human Genomics
https://www.readbyqxmd.com/read/28031051/the-status-of-her2-amplification-and-kras-mutations-in-mucinous-ovarian-carcinoma
#14
LETTER
Kuang-Leei Chang, Ming-Yung Lee, Wan-Ru Chao, Chih-Ping Han
Jayson GC et al. remarked in Lancet that nearly 100% of mucinous ovarian cancer cases have Kras mutation as well as a high frequency of Her2 amplification. Using the Abbott PathVysion Her2 DNA Probe Kit and Kras mutant-enriched PCR Kits (FemtoPath®), 21 samples of primary ovarian mucinous cystadenocarcinomas from Taiwanese patients were examined to determine the status of Her2 amplification and Kras mutations. Our results showed the Her2 amplification rates were 33.33%, while the Kras mutation rates were 61...
December 28, 2016: Human Genomics
https://www.readbyqxmd.com/read/27894333/head-and-neck-squamous-cell-carcinoma-risk-in-smokers-no-association-detected-between-phenotype-and-ahr-cyp1a1-cyp1a2-or-cyp1b1-genotype
#15
Lucia F Jorge-Nebert, Ge Zhang, Keith M Wilson, Zhengwen Jiang, Randall Butler, Jack L Gluckman, Susan M Pinney, Daniel W Nebert
BACKGROUND: Head-and-neck squamous cell carcinoma (HNSCC) differs between smokers and nonsmokers in etiology and clinical presentation. Because of demonstrated unequivocal involvement in smoking-induced cancer in laboratory animals, four candidate genes--AHR, CYP1A1, CYP1A2, and CYP1B1--were selected for a clinical genotype-phenotype association study of HNSCC risk in smokers. Thirty-six single-nucleotide variants (mostly tag-SNPs) within and near these four genes [16 (AHR), 4 (CYP1A1), 4 (CYP1A2), and 12 (CYP1B1)] were chosen...
November 28, 2016: Human Genomics
https://www.readbyqxmd.com/read/27881154/targeted-next-generation-sequencing-identifies-novel-notch3-gene-mutations-in-cadasil-diagnostics-patients
#16
Neven Maksemous, Robert A Smith, Larisa M Haupt, Lyn R Griffiths
BACKGROUND: Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is a monogenic, hereditary, small vessel disease of the brain causing stroke and vascular dementia in adults. CADASIL has previously been shown to be caused by varying mutations in the NOTCH3 gene. The disorder is often misdiagnosed due to its significant clinical heterogeneic manifestation with familial hemiplegic migraine and several ataxia disorders as well as the location of the currently identified causative mutations...
November 24, 2016: Human Genomics
https://www.readbyqxmd.com/read/27871310/transcriptome-analysis-reveals-manifold-mechanisms-of-cyst-development-in-adpkd
#17
Rita M C de Almeida, Sherry G Clendenon, William G Richards, Michael Boedigheimer, Michael Damore, Sandro Rossetti, Peter C Harris, Britney-Shea Herbert, Wei Min Xu, Angela Wandinger-Ness, Heather H Ward, James A Glazier, Robert L Bacallao
BACKGROUND: Autosomal dominant polycystic kidney disease (ADPKD) causes progressive loss of renal function in adults as a consequence of the accumulation of cysts. ADPKD is the most common genetic cause of end-stage renal disease. Mutations in polycystin-1 occur in 87% of cases of ADPKD and mutations in polycystin-2 are found in 12% of ADPKD patients. The complexity of ADPKD has hampered efforts to identify the mechanisms underlying its pathogenesis. No current FDA (Federal Drug Administration)-approved therapies ameliorate ADPKD progression...
November 21, 2016: Human Genomics
https://www.readbyqxmd.com/read/27863505/a-genomic-case-study-of-desmoplastic-small-round-cell-tumor-comprehensive-analysis-reveals-insights-into-potential-therapeutic-targets-and-development-of-a-monitoring-tool-for-a-rare-and-aggressive-disease
#18
Elisa Napolitano Ferreira, Bruna Durães Figueiredo Barros, Jorge Estefano de Souza, Renan Valieris Almeida, Giovana Tardin Torrezan, Sheila Garcia, Ana Cristina Victorino Krepischi, Celso Abdon Lopes de Mello, Isabela Werneck da Cunha, Clóvis Antonio Lopes Pinto, Fernando Augusto Soares, Emmanuel Dias-Neto, Ademar Lopes, Sandro José de Souza, Dirce Maria Carraro
BACKGROUND: Genome-wide profiling of rare tumors is crucial for improvement of diagnosis, treatment, and, consequently, achieving better outcomes. Desmoplastic small round cell tumor (DSRCT) is a rare type of sarcoma arising from mesenchymal cells of abdominal peritoneum that usually develops in male adolescents and young adults. A specific translocation, t(11;22)(p13;q12), resulting in EWS and WT1 gene fusion is the only recurrent molecular hallmark and no other genetic factor has been associated to this aggressive tumor...
November 18, 2016: Human Genomics
https://www.readbyqxmd.com/read/27793185/navigating-the-dynamic-landscape-of-long-noncoding-rna-and-protein-coding-gene-annotations-in-gencode
#19
Saakshi Jalali, Shrey Gandhi, Vinod Scaria
BACKGROUND: Our understanding of the transcriptional potential of the genome and its functional consequences has undergone a significant change in the last decade. This has been largely contributed by the improvements in technology which could annotate and in many cases functionally characterize a number of novel gene loci in the human genome. Keeping pace with advancements in this dynamic environment and being able to systematically annotate a compendium of genes and transcripts is indeed a formidable task...
October 28, 2016: Human Genomics
https://www.readbyqxmd.com/read/27836013/novel-genetic-risk-variants-for-pediatric-celiac-disease
#20
Angeliki Balasopoulou, Biljana Stanković, Angeliki Panagiotara, Gordana Nikčevic, Brock A Peters, Anne John, Effrosyni Mendrinou, Apostolos Stratopoulos, Aigli Ioanna Legaki, Vasiliki Stathakopoulou, Aristoniki Tsolia, Nikolaos Govaris, Sofia Govari, Zoi Zagoriti, Konstantinos Poulas, Maria Kanariou, Nikki Constantinidou, Maro Krini, Kleopatra Spanou, Nedeljko Radlovic, Bassam R Ali, Joseph Borg, Radoje Drmanac, George Chrousos, Sonja Pavlovic, Eleftheria Roma, Branka Zukic, George P Patrinos, Theodora Katsila
BACKGROUND: Celiac disease is a complex chronic immune-mediated disorder of the small intestine. Today, the pathobiology of the disease is unclear, perplexing differential diagnosis, patient stratification, and decision-making in the clinic. METHODS: Herein, we adopted a next-generation sequencing approach in a celiac disease trio of Greek descent to identify all genomic variants with the potential of celiac disease predisposition. RESULTS: Analysis revealed six genomic variants of prime interest: SLC9A4 c...
October 24, 2016: Human Genomics
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