Abstract:
INTRODUCTION:Currently, next-generation sequencing (NGS) technology is more accessible and available to detect the genetic causation of diseases. Though NGS technology benefited some clinical phenotypes, for some clinical diagnoses such as seizures and epileptic disorders, adaptation occurred slowly. The genetic diagnosis was mainly based on epilepsy gene panels and not on whole exome and/or genome sequencing. METHOD:We retrospectively analyzed 420 index cases, referred for NGS over a period of 18 months, to investigate the challenges in diagnosing epilepsy. RESULT:Of the 420 cases, 65 (15%) were referred due to epilepsy with one third having a positive family history. The result of the NGS was 14 positive cases (21.5%), 16 inconclusive cases (24%), and 35 (53%) negative cases. No gene has been detected twice in the inconclusive and positive groups. Comparative genomic hybridization has been performed for all 30 NGS negative cases and four cases with pathogenic variants (deletion in 15q11.213.1, deletion of 2p16.3, deletion in Xq22.1, and deletion in 17p13.3) were identified. CONCLUSION:These findings have implications for our understanding of the approach to genetic testing and counseling of patients affected with seizures and epilepsy disorders. The overall diagnostic yield of exome/genome sequencing in our cohort was 23%. The main characteristic is genetic heterogeneity, supporting NGS technology as a suitable testing approach for seizures and epilepsy disorders. Genetic counseling for newly identified disease-causing variants depends on the pedigree interpretation, within the context of disease penetrance and variable expressivity.
journal_name
Ann Hum Genetjournal_title
Annals of human geneticsauthors
Alsubaie L,Aloraini T,Amoudi M,Swaid A,Eyiad W,Al Mutairi F,Ababneh F,Alrifai MT,Baarmah D,Altwaijri W,Alotaibi N,Harthi A,Rumayyan A,Alanazi A,Qrimli M,Alfadhel M,Alfares Adoi
10.1111/ahg.12397subject
Has Abstractpub_date
2020-11-01 00:00:00pages
431-436issue
6eissn
0003-4800issn
1469-1809journal_volume
84pub_type
杂志文章abstract::Seven phage clones containing human sequences were picked at random from a human genomic library cloned in Charon 4A. The clones are devoid of repetitive sequences and can be used to recognize restriction fragment length polymorphisms (Feder et al. 1985). The chromosomal locations of the sequences defined by the seven...
journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/j.1469-1809.1986.tb01033.x
更新日期:1986-05-01 00:00:00
abstract::Apparently identical twin boys are both XX/XY and have two populations, A1 and B, of cells in their peripheral blood. Chimerism in somatic tissue outside the blood cells can be demonstrated in only one of the twins. From analysis of chromosomes and many gene markers the mechanism of origin of the unusual twins remains...
journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/j.1469-1809.1979.tb02000.x
更新日期:1979-10-01 00:00:00
abstract::Hereditary hearing impairment is the most genetically heterogeneous trait known in humans. So far, 50 published autosomal recessive non-syndromic hearing impairment (ARNSHI) loci have been mapped, and 23 ARNSHI genes have been identified. Here, we report the mapping of a novel ARNSHI locus, DFNB63, to chromosome 11q13...
journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/j.1469-1809.2006.00337.x
更新日期:2007-03-01 00:00:00
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journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/j.1469-1809.2007.00370.x
更新日期:2007-11-01 00:00:00
abstract::A theory is given for complex phenotypes represented by an ordered polychotomy separately for affected (as severity) and for normals (as diathesis), with consideration of history, ascertainment, sampling frames, and phenotype systems. Nonrandom selection of probands by severity is permitted. Both probit and logistic m...
journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/j.1469-1809.1991.tb00857.x
更新日期:1991-10-01 00:00:00
abstract::Myasthenia gravis (MG) is considered to be a kind of autoimmune disorder resulting from dysfunction of neuromuscular transmission caused by autoantibodies against the nicotinic acetylcholine receptors. A number of studies have identified Cytotoxic T-lymphocyte-associated antigen-4 (CTLA-4) as a candidate gene for MG. ...
journal_title:Annals of human genetics
pub_type: 杂志文章,meta分析
doi:10.1111/ahg.12262
更新日期:2018-11-01 00:00:00
abstract::By biochemical characterization of glucose-6-phosphate dehydrogenase (G6PD) from the red cells of seventeen subjects of the population of Matera (Southern Italy) we have identified six genetically determined common variants. Among these, G6PD Metaponto and G6PD A(-) Matera had been already fully characterized. We have...
journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/j.1469-1809.1990.tb00355.x
更新日期:1990-01-01 00:00:00
abstract:INTRODUCTION:Limb-girdle muscular dystrophy (LGMD) is the fourth most common muscular dystrophy, with progressive proximal muscle weakness. However, a large number of neuromuscular conditions are similarly presented. Because of this, the use of high-throughput methods such as next-generation sequencing (NGS) is importa...
journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/ahg.12319
更新日期:2019-09-01 00:00:00
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journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/j.1469-1809.1976.tb00134.x
更新日期:1976-01-01 00:00:00
abstract::Variants in the UGT1A1 gene and its promoter are known to determine levels of unconjugated bilirubin (UCB), but do not explain all cases of unconjugated hyperbilirubinemia. To discover associations with variants in genes other than UGT1A1, we undertook a genome-wide association study. We recruited 200 participants to ...
journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/j.1469-1809.2011.00688.x
更新日期:2012-01-01 00:00:00
abstract::Non-random inheritance of the two parental haplotypes among siblings affected by certain diseases has long been used to provide evidence of the presence of disease susceptibility genes. The distribution of a powerful test, called Q, based on haplotype concordance and discordance, is derived under the null hypothesis o...
journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/j.1469-1809.1994.tb01885.x
更新日期:1994-05-01 00:00:00
abstract::Mitochondrial DNA variability in the Polish Roma population has been studied by means of hypervariable segment I and II (HVS I and II) sequencing and restriction fragment-length polymorphism analysis of the mtDNA coding region. The mtDNA haplotypes detected in the Polish Roma fall into the common Eurasian mitochondria...
journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/j.1529-8817.2005.00222.x
更新日期:2006-03-01 00:00:00
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journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1046/j.1469-1809.1997.6160497.x
更新日期:1997-11-01 00:00:00
abstract::We analyzed commonly reported European and Asian obesity-related gene variants in a Mexican-Mestizo population through each single nucleotide polymorphism (SNP) and a genetic risk score (GRS) based on 23 selected SNPs. Study subjects were physically active Mexican-Mestizo adults (n = 608) with body mass index (BMI) ...
journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/ahg.12190
更新日期:2017-05-01 00:00:00
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journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/j.1469-1809.1988.tb01073.x
更新日期:1988-01-01 00:00:00
abstract::As knowledge of the human genome continues to grow, more progress is being made towards not only identifying the genes involved in disease susceptibility but also in defining the synergistic role genes play with environmental exposures. The detection of gene-environment interactions is important as it can offer clinic...
journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1046/j.1529-8817.2003.00073.x
更新日期:2004-01-01 00:00:00
abstract::Typically genetic studies of continuous traits such as cholesterol levels or blood pressure assume that interindividual variability follows a normal distribution. Here we develop methods to analyze positively skewed data by assuming a lognormal distribution. We develop a variance components approach for identifying su...
journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1046/j.1469-1809.1998.6260521.x
更新日期:1998-11-01 00:00:00
abstract::Two clones, pCN1 and pCN2, which together form full-length cDNA for N-ras, were used to search for restriction fragment length polymorphisms. pCN2, which entirely consists of 3' non-translated sequences, revealed more bands on DNA transfer hybridizations than could be accounted for using the known restriction map of N...
journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/j.1469-1809.1988.tb01096.x
更新日期:1988-07-01 00:00:00
abstract::The reported associations between HLA antigen DR3 and null (QO) alleles at the C4A and C4B loci and systemic lupus erythematosus are here analysed. The empirical logistic method has been applied to a body of data which included the relevant genotypes. The analysis suggests that the association with null alleles at the...
journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/j.1469-1809.1986.tb01942.x
更新日期:1986-01-01 00:00:00
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pub_type: 杂志文章,评审
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更新日期:2011-11-01 00:00:00
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pub_type: 杂志文章,meta分析
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更新日期:2012-01-01 00:00:00
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journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/j.1469-1809.2009.00554.x
更新日期:2010-01-01 00:00:00
abstract::The proportion of hex S to hex C in normal and Sandhoff's fibroblasts was determined to be between 1:1 and 1:2 by differential staining of hex S at pH 4.4 with 4-methylumbelliferyl-beta-N-acetylgalactosaminide and of hex C at pH 7.0 with 4-methylumbelliferyl-beta-N-acetylglucosaminide. Hex S and hex C were also semi-q...
journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/j.1469-1809.1977.tb01911.x
更新日期:1977-10-01 00:00:00
abstract::1. Two methods have been devised for the detection after electrophoresis of gamma-aminobutyric acid transaminase (GABAT) isozymes. 2. GABAT isozymes can be detected in liver, brain, kidney, pancreas, heart, testis. spinal cord and upper jejunum. The greatest activity occurs in liver. 3. Three different commonly occurr...
journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/j.1469-1809.1981.tb00334.x
更新日期:1981-07-01 00:00:00
abstract::1. The use of SDS electrophoresis as a tool for the analysis of development processes in man has been evaluated. 2. The protein profiles of cardiac and skeletal muscle from foetal (10--24 weeks gestation) infant and adult specimens have been analysed and striking developmental changes were found which involved all the...
journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/j.1469-1809.1978.tb00911.x
更新日期:1978-05-01 00:00:00
abstract::The polygenic threshold model assumes that the distribution of the underlying liability is approximately normal. This paper examines the impact of deviations from normality in the underlying liability distribution when the number of loci affecting liability is finite, but large (e.g. 5-10). Skewness and kurtosis of th...
journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/j.1469-1809.1986.tb01941.x
更新日期:1986-01-01 00:00:00
abstract::Estimating haplotype relative risks in a family-based study is complicated by phase ambiguity and the many parameters needed to quantify relative risks for all possible diplotypes. This problem becomes manageable if a particular haplotype has been implicated previously as relevant to risk. We fit log-linear models to ...
journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/j.1469-1809.2009.00515.x
更新日期:2009-05-01 00:00:00
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journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/ahg.12081
更新日期:2014-11-01 00:00:00
abstract::Since 1967 a syndrome characterized by renal disease, normochromic anaemia and corneal opacities has been described in 7 members of 3 different Norweigan families. The patients have low levels of esterified cholesterol and lack LCAT (lecithin: cholesterol acyltransferase) activity in plasma. The genetic basis of the d...
journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/j.1469-1809.1975.tb00617.x
更新日期:1975-01-01 00:00:00
abstract::Some studies of mtDNA propose that contemporary Amerindians have descended from four haplotype groups, each defined by specific sets of polymorphisms. One recent study also found evidence of other potential founder haplotypes. We wanted to determine whether the four haplotypes in modern populations were also present i...
journal_title:Annals of human genetics
pub_type: 杂志文章
doi:10.1111/j.1469-1809.1996.tb01193.x
更新日期:1996-07-01 00:00:00