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Journal of Human Genetics

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https://www.readbyqxmd.com/read/29773863/low-prevalence-of-argininosuccinate-lyase-deficiency-among-inherited-urea-cycle-disorders-in-korea
#1
Dahye Kim, Jung Min Ko, Yoon-Myung Kim, Go Hun Seo, Gu-Hwan Kim, Beom Hee Lee, Han-Wook Yoo
Argininosuccinic aciduria (ASA), which is considered to be the second most common urea cycle disorder (UCD), is caused by an argininosuccinate lyase deficiency and is biochemically characterized by elevation of argininosuccinic acid and arginine deficiency. In addition to hyperammonemia, other characteristic features of ASA include hepatic fibrosis, hypertension, neurocognitive deficiencies, and trichorrhexis nodosa. Herein, we retrospectively reviewed the clinical findings, biochemical profiles, and genotypic characteristics of five Korean patients with ASA, who showed typical phenotypes and biochemical findings of the disease...
May 17, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29760529/de-novo-nonsense-mutation-in-whsc1-nsd2-in-patient-with-intellectual-disability-and-dysmorphic-features
#2
Ekaterina R Lozier, Fedor A Konovalov, Ilya V Kanivets, Denis V Pyankov, Philip A Koshkin, Larisa S Baleva, Alla E Sipyagina, Elena N Yakusheva, Anastasiya E Kuchina, Sergey A Korostelev
Intellectual disability is the most common developmental disorder caused by chromosomal aberrations as well as single-nucleotide variants (SNVs) and small insertions/deletions (indels). Here we report identification of a novel, probably pathogenic mutation in the WHSC1 gene in a patient case with phenotype overlapping the features of Wolf-Hirschhorn syndrome. Deletions involving WHSC1 (Wolf-Hirschhorn syndrome candidate 1 gene) were described earlier in patients with Wolf-Hirschhorn syndrome. However, to our knowledge, single-point mutations in WHSC1 associated with any intellectual deficiency syndromes have not been reported...
May 14, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29760528/lrrtm4-c538y-novel-gene-mutation-is-associated-with-hereditary-macular-degeneration-with-novel-dysfunction-of-on-type-bipolar-cells
#3
Yuichi Kawamura, Akiko Suga, Takuro Fujimaki, Kazutoshi Yoshitake, Kazushige Tsunoda, Akira Murakami, Takeshi Iwata
The macula is a unique structure in higher primates, where cone and rod photoreceptors show highest density in the fovea and the surrounding area, respectively. The hereditary macular dystrophies represent a heterozygous group of rare disorders characterized by central visual loss and atrophy of the macula and surrounding retina. Here we report an atypical absence of ON-type bipolar cell response in a Japanese patient with autosomal dominant macular dystrophy (adMD). To identify a causal genetic mutation for the adMD, we performed whole-exome sequencing (WES) on four affected and four-non affected members of the family for three generations, and identified a novel p...
May 14, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29735986/novel-splice-site-variant-of-uchl1-in-an-indian-family-with-autosomal-recessive-spastic-paraplegia-79
#4
Aneek Das Bhowmik, Siddaramappa J Patil, Dipti Vijayrao Deshpande, Venkatraman Bhat, Ashwin Dalal
Spastic Paraplegia-79 (SPG79) is an autosomal recessive type of childhood onset complicated by hereditary spastic paraplegia. SPG79 is characterized by spasticity, paraplegia, optic atrophy, cerebellar signs, and other variable clinical features. Recessive, disease causing variants in Ubiquitin C-terminal hydrolase-L1 (UCHL1) gene have been implicated as a cause for SPG79 in two families till now. In this study, we report on a third family of SPG79 with two similarly affected siblings, harboring a novel homozygous splice-site variant in the UCHL1 gene (NM_004181...
May 7, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29717186/novel-nexmif-pathogenic-variant-in-a-boy-with-severe-autistic-features-intellectual-disability-and-epilepsy-and-his-mildly-affected-mother
#5
Nelle Lambert, Corinne Dauve, Emmanuelle Ranza, Periklis Makrythanasis, Federico Santoni, Frédérique Sloan-Béna, Stefania Gimelli, Jean-Louis Blouin, Michel Guipponi, Armand Bottani, Stylianos E Antonarakis, Markus M Kosel, Joel Fluss, Ariane Paoloni-Giacobino
Intellectual disability (ID) and autism spectrum disorders are complex neurodevelopmental disorders occurring among all ethnic and socioeconomic groups. Pathogenic variants in the neurite extension and migration factor (NEXMIF) gene (formerly named KIAA2022) on the X chromosome are responsible for ID, autistic behavior, epilepsy, or dysmorphic features in males. Most affected females described had a milder phenotype or were asymptomatic obligate carriers. We report here for the first time mother-to-son transmission of a novel NEXMIF truncating variant without X-inactivation skewing in the blood...
May 1, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29717185/author-correction-two-large-deletions-extending-beyond-either-end-of-the-rhd-gene-and-their-red-cell-phenotypes
#6
Kshitij Srivastava, David Alan Stiles, Franz Friedrich Wagner, Willy Albert Flegel
The authors of the above paper noticed an error in publication. In Results section, under sub-section RHD genetic variations, the deletion nomenclature for Sample 1 was incorrectly given as [NC_000001.11(NG_007494.1):c.(1-15149_1-15153)_(148+3154_148+3158)del].
May 1, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29703962/truncating-mutations-of-hibch-tend-to-cause-severe-phenotypes-in-cases-with-hibch-deficiency-a-case-report-and-brief-literature-review
#7
Hu Tan, Xin Chen, Weigang Lv, Siyuan Linpeng, Desheng Liang, Lingqian Wu
3-hydroxyisobutryl-CoA hydrolase (HIBCH) deficiency is a rare inborn error of valine metabolism characterized by neurodegenerative symptoms and caused by recessive mutations in the HIBCH gene. In this study, utilizing whole exome sequencing, we identified two novel splicing mutations of HIBCH (c.304+3A>G; c.1010_1011+3delTGGTA) in a Chinese patient with characterized neurodegenerative features of HIBCH deficiency and bilateral syndactyly which was not reported in previous studies. Functional tests showed that both of these two mutations destroyed the normal splicing and reduced the expression of HIBCH protein...
April 27, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29703961/genetic-variants-in-chemokine-cc-subfamily-genes-influence-hepatitis-c-virus-viral-clearance
#8
Yinan Yao, Ming Yue, Feng Zang, Mei Liu, Haozhi Fan, Lingyun Zhuo, Jingjing Wu, Xueshan Xia, Yue Feng, Peng Huang, Rongbin Yu
Chemokine genes may influence both hepatitis C virus (HCV) spontaneous clearance in acute infection and treatment response in chronic infection. We conducted this study to evaluate whether the genetic variants in several CC family genes influence HCV spontaneous clearance and treatment response. The current research genotyped eight SNPs, including CCR1 rs3733096, rs13096371, CCR5 rs746492, rs1800874, CCL3 rs1130371, CCL5 rs3817656, CCL8 rs1133763, CCL14 rs854625, to explore their associations with HCV spontaneous clearance and response to treatment in two populations...
April 27, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29695797/a-biallelic-36-bp-insertion-in-pibf1-is-associated-with-joubert-syndrome
#9
Malavika Hebbar, Anil Kanthi, Anju Shukla, Stephanie Bielas, Katta M Girisha
Biallelic pathogenic variants in PIBF1 have been identified as one of the genetic etiologies of Joubert syndrome. We report a two-year-old girl with global developmental delay, facial dysmorphism, hypotonia, enlarged cystic kidneys, molar tooth sign, and thinning of corpus callosum. A novel homozygous 36-bp insertion in PIBF1 (c.1181_1182ins36) was identified by exome sequencing as the likely cause of her condition. This is the second publication demonstrating the cause and effect relationship between PIBF1 and Joubert syndrome...
April 25, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29691480/an-estimation-of-the-prevalence-of-genomic-disorders-using-chromosomal-microarray-data
#10
Madelyn A Gillentine, Philip J Lupo, Pawel Stankiewicz, Christian P Schaaf
Multiple genomic disorders result from recurrent deletions or duplications between low copy repeat (LCR) clusters, mediated by nonallelic homologous recombination. These copy number variants (CNVs) often exhibit variable expressivity and/or incomplete penetrance. However, the population prevalence of many genomic disorders has not been estimated accurately. A subset of genomic disorders similarly characterized by CNVs between LCRs have been studied epidemiologically, including Williams-Beuren syndrome (7q11...
April 24, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29670293/no-novel-high-penetrant-gene-might-remain-to-be-found-in-japanese-patients-with-unknown-mody
#11
Yukio Horikawa, Kazuyoshi Hosomichi, Mayumi Enya, Hiroyuki Ishiura, Yutaka Suzuki, Shoji Tsuji, Sumio Sugano, Ituro Inoue, Jun Takeda
MODY 5 and 6 have been shown to be low-penetrant MODYs. As the genetic background of unknown MODY is assumed to be similar, a new analytical strategy is applied here to elucidate genetic predispositions to unknown MODY. We examined to find whether there are major MODY gene loci remaining to be identified using SNP linkage analysis in Japanese. Whole-exome sequencing was performed with seven families with typical MODY. Candidates for novel MODY genes were examined combined with in silico network analysis. Some peaks were found only in either parametric or non-parametric analysis; however, none of these peaks showed a LOD score greater than 3...
April 18, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29666465/molecular-epidemiology-of-lung-cancer-in-iran-implications-for-drug-development-and-cancer-prevention
#12
REVIEW
Zahra Fathi, Nicholas L Syn, Jian-Guo Zhou, Raheleh Roudi
Epidemiological studies undertaken over the past decades reveal a gradual but progressive increase in the incidence and mortality attributable to lung cancer in the Islamic Republic of Iran, a sovereign state geographically situated at the crossroads of Central Eurasia and Western Asia. We identified references published in English and Persian through searches of PubMed, EMBASE, Web of Science, Scopus, and the Scientific Information Database (SID)-a specialized Iranian database, which indexes Iranian scientific journals-between inception and 15 September 2017...
April 18, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29666464/an-adolescence-onset-male-leukoencephalopathy-with-remarkable-cerebellar-atrophy-and-novel-compound-heterozygous-aars2-gene-mutations-a-case-report
#13
Qing Dong, Ling Long, Yan-Yu Chang, Yan-Jun Lin, Mei Liu, Zheng-Qi Lu
Mutations in the mitochondrial alanyl-transfer (t)RNA synthetase 2 (AARS2; OMIM 612035) have been linked to leukoencephalopathy recently. Until now, there have been only 13 cases reported in the literature. Hence, the clinical and genetic characteristics of this disease are not fully understood. Here, we reported an adolescence-onset male leukoencephalopathy patient characterized by progressive limb tremor at the age of 17 years. He had no signs of a cardiomyopathy. Magnetic resonance imaging scanning demonstrated severe cerebellar atrophy and white matter abnormalities involving descending tracts...
April 17, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29636545/osteogenesis-imperfecta-with-ectopic-mineralizations-in-dentin-and-cementum-and-a-col1a2-mutation
#14
Piranit Nik Kantaputra, Yuddhasert Sirirungruangsarn, Worrachet Intachai, Chumpol Ngamphiw, Sissades Tongsima, Prapai Dejkhamron
We report a Thai father (patient 1) and his daughter (patient 2) affected with osteogenesis imperfecta type IV and dentinogenesis imperfecta. Both were heterozygous for the c.1451G>A (p.Gly484Glu) mutation in COL1A2. The father, a Thai boxer, had very mild osteogenesis imperfecta with no history of low-trauma bone fractures. Scanning electron micrography of the primary teeth with DI of the patient 2, and the primary teeth with DI of another OI patient with OI showed newly recognized dental manifestations of teeth with DI...
April 10, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29636544/genome-wide-uniparental-diploidy-of-all-paternal-chromosomes-in-an-11-year-old-girl-with-deafness-and-without-malignancy
#15
Irena Borgulová, Inna Soldatova, Martina Putzová, Marcela Malíková, Jana Neupauerová, Simona Poisson Marková, Marie Trková, Pavel Seeman
Approximately 20 cases of genome-wide uniparental disomy or diploidy (GWUPD) as mosaicism have previously been reported. We present the case of an 11-year-old deaf girl with a paternal uniparental diploidy or isodisomy with a genome-wide loss of heterozygosity (LOH). The patient was originally tested for non-syndromic deafness, and the novel variant p.V234I in the ESRRB gene was found in a homozygous state. Our female proband is the seventh patient diagnosed with GWUPD at a later age and is probably the least affected of the seven, as she has not yet presented any malignancy...
April 10, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29618761/qil1-dependent-assembly-of-micos-complex-lethal-mutation-in-c19orf70-resulting-in-liver-disease-and-severe-neurological-retardation
#16
J Gödiker, M Grüneberg, I DuChesne, J Reunert, S Rust, C Westermann, Y Wada, G Classen, C D Langhans, K P Schlingmann, R J Rodenburg, R Pohlmann, T Marquardt
Seven subunits of the mitochondrial contact site and cristae junction (CJ) organizing system (MICOS) in humans have been recently described in function and structure. QIL1 (also named MIC13) is a small complex that is crucial for the maintenance and assembling of MICOS. A novel mutation of an essential splice site in the C19orf70 gene encoding QIL1 induces severe mitochondrial encephalopathy, hepatopathy and lactate acidosis consistent with psychomotor retardation. In addition, bilateral kidney stones were observed...
April 4, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29615819/unfolded-protein-response-is-activated-in-krabbe-disease-in-a-manner-dependent-on-the-mutation-type
#17
Kaori Irahara-Miyana, Takanobu Otomo, Hidehito Kondo, Mohammad Arif Hossain, Keiichi Ozono, Norio Sakai
Krabbe disease, one of the autosomal-recessive lysosomal storage disorders (LSDs), is caused by a deficiency of galactocerebrosidase (GALC) activity, resulting in the intracellular accumulation of psychosine, which is cytotoxic for neuronal cells. Genetically pathogenic mutations result in conformational changes in GALC and disrupt the lysosmal trafficking of cargos, which subsequently accumulate in the endoplasmic reticulum (ER). Recently, ER stress together with the activation of the unfolded protein response (UPR) has been suggested to play a key role in the pathogenesis of LSDs...
April 3, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29602947/high-risk-screening-for-gaucher-disease-in-patients-with-neurological-symptoms
#18
Ken Momosaki, Jun Kido, Shirou Matsumoto, Shinichiro Yoshida, Atsuko Takei, Takuya Miyabayashi, Keishin Sugawara, Fumio Endo, Kimitoshi Nakamura
Gaucher disease (GD) is an autosomal recessive lysosomal storage disorder caused by the deficiency of glucocerebrosidase enzyme activity. Clinical phenotypes of GD are categorized into three groups: (i) non-neuronopathic GD (type 1), (ii) acute neuronopathic GD (type 2) and (iii) subacute neuronopathic GD (type 3). The high-risk screening of neuronopathic GD has been performed using an enzymatic assay on the dried blood spot (DBS) samples. We enrolled a total of 102 individuals (47 females, 55 males; 0-57 years old; median age 10...
March 30, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29568001/dysosteosclerosis-is-also-caused-by-tnfrsf11a-mutation
#19
Long Guo, Nursel H Elcioglu, Ozge K Karalar, Mert O Topkar, Zheng Wang, Yuma Sakamoto, Naomichi Matsumoto, Noriko Miyake, Gen Nishimura, Shiro Ikegawa
Dysosteosclerosis (DOS) is a form of sclerosing bone disease characterized by irregular osteosclerosis and platyspondyly. Its mode of inheritance is autosomal recessive. SLC29A3 mutations have been reported as the causal gene in two DOS families, however, genetic heterogeneity has been suggested. By whole-exome sequencing in a Turkish patient with DOS, we found a novel splice-site mutation in TNFRSF11A. TNFRSF11A mutations have previously been reported in two autosomal dominant diseases (osteolysis, familial expansile and Paget disease of bone 2, early-onset) and an autosomal recessive disease (osteopetrosis, autosomal recessive 7)...
March 22, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29568000/are-csnk2a1-gene-mutations-associated-with-retinal-dystrophy-report-of-a-patient-carrier-of-a-novel-de-novo-splice-site-mutation
#20
LETTER
Davide Colavito, Elda Del Giudice, Chiara Ceccato, Maurizio Dalle Carbonare, Alberta Leon, Agnese Suppiej
No abstract text is available yet for this article.
March 22, 2018: Journal of Human Genetics
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