journal
https://read.qxmd.com/read/38332109/a-splice-acceptor-variant-in-rgs6-associated-with-intellectual-disability-microcephaly-and-cataracts-disproportionately-promotes-expression-of-a-subset-of-rgs6-isoforms
#41
JOURNAL ARTICLE
K E Ahlers-Dannen, J Yang, M M Spicer, D Fu, A DeVore, R A Fisher
Intellectual disability (ID) is associated with an increased risk of developing psychiatric disorders, suggesting a common underlying genetic factor. Importantly, altered signaling and/or expression of regulator of G protein signaling 6 (RGS6) is associated with ID and numerous psychiatric disorders. RGS6 is highly conserved and undergoes complex alternative mRNA splicing producing ~36 protein isoforms with high sequence similarity historically necessitating a global approach in functional studies. However, our recent analysis in mice revealed RGS6 is most highly expressed in CNS with RGS6L(+GGL) isoforms predominating...
February 9, 2024: Journal of Human Genetics
https://read.qxmd.com/read/38321215/genetic-association-and-functional-validation-of-zfp36l2-in-non-syndromic-orofacial-cleft-subtypes
#42
JOURNAL ARTICLE
Jialin Sun, Mujia Li, Huaqin Sun, Ziyuan Lin, Bing Shi, Zhonglin Jia
BACKGROUND: Non-syndromic orofacial cleft (NSOC) is one of the most common craniofacial malformations with complex etiology. This study aimed to explore the role of specific SNPs in ZFP36L2 and its functional relevance in zebrafish models. METHODS: We analyzed genetic data of the Chinese Han population from two previous GWAS, comprising of 2512 cases and 2255 controls. Based on the Hardy-Weinberg Equilibrium (HWE) and minor allele frequency (MAF), SNPs in the ZFP36L2 were selected for association analysis...
February 6, 2024: Journal of Human Genetics
https://read.qxmd.com/read/38316882/cardiac-manifestations-of-human-acta2-variants-recapitulated-in-a-zebrafish-model
#43
JOURNAL ARTICLE
Wulan Apridita Sebastian, Masanori Inoue, Nobuyuki Shimizu, Ryosuke Sato, Saori Oguri, Tomoyo Itonaga, Shintaro Kishimoto, Hiroshi Shiraishi, Toshikatsu Hanada, Kenji Ihara
The ACTA2 gene encodes actin α2, a major smooth muscle protein in vascular smooth muscle cells. Missense variants in the ACTA2 gene can cause inherited thoracic aortic diseases with characteristic symptoms, such as dysfunction of smooth muscle cells in the lungs, brain vessels, intestines, pupils, bladder, or heart. We identified a heterozygous missense variant of Gly148Arg (G148R) in a patient with a thoracic aortic aneurysm, dissection, and left ventricular non-compaction. We used zebrafish as an in vivo model to investigate whether or not the variants might cause functional or histopathological abnormalities in the heart...
February 5, 2024: Journal of Human Genetics
https://read.qxmd.com/read/38228875/a-comparative-study-on-riboflavin-responsive-multiple-acyl-coa-dehydrogenation-deficiency-due-to-variants-in-flad1-and-etfdh-gene
#44
JOURNAL ARTICLE
Bing Wen, Runqi Tang, Shuyao Tang, Yuan Sun, Jingwen Xu, Dandan Zhao, Tan Wang, Chuanzhu Yan
Lipid storage myopathy (LSM) is a heterogeneous group of lipid metabolism disorders predominantly affecting skeletal muscle by triglyceride accumulation in muscle fibers. Riboflavin therapy has been shown to ameliorate symptoms in some LSM patients who are essentially concerned with multiple acyl-CoA dehydrogenation deficiency (MADD). It is proved that riboflavin responsive LSM caused by MADD is mainly due to ETFDH gene variant (ETFDH-RRMADD). We described here a case with riboflavin responsive LSM and MADD resulting from FLAD1 gene variants (c...
January 17, 2024: Journal of Human Genetics
https://read.qxmd.com/read/38228874/novel-compound-heterozygous-abca2-variants-cause-idpogsa-a-variable-phenotypic-syndrome-with-intellectual-disability
#45
JOURNAL ARTICLE
Yuta Inoue, Naomi Tsuchida, Chong Ae Kim, Bruno de Oliveira Stephan, Matheus Augusto Araujo Castro, Rachel Sayuri Honjo, Debora Romeo Bertola, Yuri Uchiyama, Kohei Hamanaka, Atsushi Fujita, Eriko Koshimizu, Kazuharu Misawa, Satoko Miyatake, Takeshi Mizuguchi, Naomichi Matsumoto
The gene for ATP binding cassette subfamily A member 2 (ABCA2) is located at chromosome 9q34.3. Biallelic ABCA2 variants lead to intellectual developmental disorder with poor growth and with or without seizures or ataxia (IDPOGSA). In this study, we identified novel compound heterozygous ABCA2 variants (NM_001606.5:c.[5300-17C>A];[6379C>T]) by whole exome sequencing in a 28-year-old Korean female patient with intellectual disability. These variants included intronic and nonsense variants of paternal and maternal origin, respectively, and are absent from gnomAD...
January 17, 2024: Journal of Human Genetics
https://read.qxmd.com/read/38225263/genotype-imputation-methods-for-whole-and-complex-genomic-regions-utilizing-deep-learning-technology
#46
REVIEW
Tatsuhiko Naito, Yukinori Okada
The imputation of unmeasured genotypes is essential in human genetic research, particularly in enhancing the power of genome-wide association studies and conducting subsequent fine-mapping. Recently, several deep learning-based genotype imputation methods for genome-wide variants with the capability of learning complex linkage disequilibrium patterns have been developed. Additionally, deep learning-based imputation has been applied to a distinct genomic region known as the major histocompatibility complex, referred to as HLA imputation...
January 15, 2024: Journal of Human Genetics
https://read.qxmd.com/read/38216729/detection-of-hidden-intronic-ddc-variant-in-aromatic-l-amino-acid-decarboxylase-deficiency-by-adaptive-sampling
#47
JOURNAL ARTICLE
Eriko Koshimizu, Mitsuhiro Kato, Kazuharu Misawa, Yuri Uchiyama, Naomi Tsuchida, Kohei Hamanaka, Atsushi Fujita, Takeshi Mizuguchi, Satoko Miyatake, Naomichi Matsumoto
Aromatic l-amino acid decarboxylase (AADC) deficiency is an autosomal recessive neurotransmitter disorder caused by pathogenic DOPA decarboxylase (DDC) variants. We previously reported Japanese siblings with AADC deficiency, which was confirmed by the lack of enzyme activity; however, only a heterozygous missense variant was detected. We therefore performed targeted long-read sequencing by adaptive sampling to identify any missing variants. Haplotype phasing and variant calling identified a novel deep intronic variant (c...
January 12, 2024: Journal of Human Genetics
https://read.qxmd.com/read/38212463/cryab-stop-loss-variant-causes-rare-syndromic-dilated-cardiomyopathy-with-congenital-cataract-expanding-the-phenotypic-and-mutational-spectrum-of-alpha-b-crystallinopathy
#48
JOURNAL ARTICLE
Changhee Ha, Darae Kim, Minjung Bak, Jong-Ho Park, Young-Gon Kim, Ja-Hyun Jang, Jong-Won Kim, Jin-Oh Choi, Mi-Ae Jang
Missense mutations in the alpha-B crystallin gene (CRYAB) have been reported in desmin-related myopathies with or without cardiomyopathy and have also been reported in families with only a cataract phenotype. Dilated cardiomyopathy (DCM) is a disorder with a highly heterogeneous genetic etiology involving more than 60 causative genes, hindering genetic diagnosis. In this study, we performed whole genome sequencing on 159 unrelated patients with DCM and identified an unusual stop-loss pathogenic variant in NM_001289808...
January 12, 2024: Journal of Human Genetics
https://read.qxmd.com/read/38200111/c-terminal-truncations-in-iqsec2-implications-for-synaptic-localization-guanine-nucleotide-exchange-factor-activity-and-neurological-manifestations
#49
JOURNAL ARTICLE
Moeko Nakashima, Tomoko Shiroshima, Masahiro Fukaya, Takeyuki Sugawara, Hiroyuki Sakagami, Kazuki Yamazawa
IQSEC2 gene on chromosome Xq11.22 encodes a member of guanine nucleotide exchange factor (GEF) protein that is implicated in the activation of ADP-ribosylation factors (Arfs) at the postsynaptic density (PSD), and plays a crucial role in synaptic transmission and dendritic spine formation. Alterations in IQSEC2 have been linked to X-linked intellectual developmental disorders including epilepsy and behavioral abnormalities. Of interest, truncating variants at the C-terminus of IQSEC2 can cause severe phenotypes, akin to truncating variants located in other regions...
January 10, 2024: Journal of Human Genetics
https://read.qxmd.com/read/38177398/prediction-of-protein-structure-and-ai
#50
REVIEW
Shiho Ohno, Noriyoshi Manabe, Yoshiki Yamaguchi
AlphaFold, an artificial intelligence (AI)-based tool for predicting the 3D structure of proteins, is now widely recognized for its high accuracy and versatility in the folding of human proteins. AlphaFold is useful for understanding structure-function relationships from protein 3D structure models and can serve as a template or a reference for experimental structural analysis including X-ray crystallography, NMR and cryo-EM analysis. Its use is expanding among researchers, not only in structural biology but also in other research fields...
January 4, 2024: Journal of Human Genetics
https://read.qxmd.com/read/38135707/carrier-screening-for-present-disease-prevalence-and-recessive-genetic-disorder-in-taiwanese-population
#51
JOURNAL ARTICLE
Li Shan Chen, Cheng Wei Yu, Wei Jiun Li, Wen Chi Hsieh, Yi Ping Li
Carrier screening is important to people have a higher prevalence of severe recessive or X-linked genetic conditions. This study is aimed that the frequency and uncertain nature of genetic variants was identified in Taiwanese population, providing individuals with information at risk of inherited diseases and their heritability to newborns. A total of 480 subjects receiving genetic counseling with no family history of inherited disorders were recruited into a cohort from 2018 to 2022. Next-generation sequencing (NGS) panel for autosomal dominant (AD), autosomal recessive (AR) and X-linked diseases was sequenced to assess disease prevalence and carrier frequency for the targeted diseases...
December 22, 2023: Journal of Human Genetics
https://read.qxmd.com/read/38123667/an-update-and-frequency-distribution-of-y-chromosome-haplogroups-in-modern-japanese-males
#52
JOURNAL ARTICLE
Makoto Inoue, Youichi Sato
Japanese males belong to the Y chromosome C1a1, C2, D1a2a, D1a2a-12f2b, O1b2, O1b2a1a1, O2a2b1, and O2a1b haplogroups. Notably, the regional frequency of each haplogroup is homogeneous. Owing to recent developments in genome sequencing technology, the phylogenetic tree of Y chromosome haplogroups is updated annually. Therefore, in this study, we aimed to provide an update on the Y chromosome haplogroups of modern Japanese males and examine their regional distributions. Using 1,640 samples of Japanese males from seven Japanese cities (Nagasaki, Fukuoka, Tokushima, Osaka, Kanazawa, Kawasaki, and Sapporo), haplogroups C1a1, C2, D1a2a, D1a2a-12f2b, O1b2, and O1b2a1a1 were updated based on the latest phylogenetic tree...
December 21, 2023: Journal of Human Genetics
https://read.qxmd.com/read/38102195/rna-sequencing-and-target-long-read-sequencing-reveal-an-intronic-transposon-insertion-causing-aberrant-splicing
#53
JOURNAL ARTICLE
Ryota Kawakami, Takuya Hiraide, Kazuki Watanabe, Sachiko Miyamoto, Kota Hira, Kazuyuki Komatsu, Hidetoshi Ishigaki, Kimiyoshi Sakaguchi, Masato Maekawa, Keita Yamashita, Tokiko Fukuda, Isao Miyairi, Tsutomu Ogata, Hirotomo Saitsu
More than half of cases with suspected genetic disorders remain unsolved by genetic analysis using short-read sequencing such as exome sequencing (ES) and genome sequencing (GS). RNA sequencing (RNA-seq) and long-read sequencing (LRS) are useful for interpretation of candidate variants and detection of structural variants containing repeat sequences, respectively. Recently, adaptive sampling on nanopore sequencers enables target LRS more easily. Here, we present a Japanese girl with premature chromatid separation (PCS)/mosaic variegated aneuploidy (MVA) syndrome...
December 15, 2023: Journal of Human Genetics
https://read.qxmd.com/read/37524782/assessment-of-whole-exome-sequencing-results-in-neurogenetic-diseases
#54
JOURNAL ARTICLE
Özgür Balasar, Müşerref Başdemirci
Neurogenetic diseases are rare genetic diseases in which neurological findings are prominent. Whole exome sequencing (WES) has led to great advances in the understanding of the causes of neurogenetic diseases. Etiological research ends with the WES method in many patients. This etiological research is called a "diagnostic odyssey" for many families. Here, we present the results of 168 patients who were previously undiagnosed and underwent WES with the suspicion of neurogenetic disease. A total of 168 cases, 94 males and 74 females, with suspected undiagnosed neurogenetic disease were included in the study...
December 2023: Journal of Human Genetics
https://read.qxmd.com/read/38030753/a-heterozygous-germline-deletion-within-usp8-causes-severe-neurodevelopmental-delay-with-multiorgan-abnormalities
#55
JOURNAL ARTICLE
Masamune Sakamoto, Kenji Kurosawa, Koji Tanoue, Kazuhiro Iwama, Fumihiko Ishida, Yoshihiro Watanabe, Nobuhiko Okamoto, Naomi Tsuchida, Yuri Uchiyama, Eriko Koshimizu, Atsushi Fujita, Kazuharu Misawa, Satoko Miyatake, Takeshi Mizuguchi, Naomichi Matsumoto
Ubiquitin-specific protease 8 (USP8) is a deubiquitinating enzyme involved in deubiquitinating the enhanced epidermal growth factor receptor for escape from degradation. Somatic variants at a hotspot in USP8 are a cause of Cushing's disease, and a de novo germline USP8 variant at this hotspot has been described only once previously, in a girl with Cushing's disease and developmental delay. In this study, we investigated an exome-negative patient with severe developmental delay, dysmorphic features, and multiorgan dysfunction by long-read sequencing, and identified a 22-kb de novo germline deletion within USP8 (chr15:50469966-50491995 [GRCh38])...
November 30, 2023: Journal of Human Genetics
https://read.qxmd.com/read/38017281/a-missense-variant-in-exosc8-causes-exon-skipping-and-expands-the-phenotypic-spectrum-of-pontocerebellar-hypoplasia-type-1c
#56
JOURNAL ARTICLE
Maha S Zaki, Sherif F Abdel-Ghafar, Mohamed S Abdel-Hamid
Pontocerebellar hypoplasia (PCH) is a rare heterogeneous neurodegenerative disorder affecting the pons and cerebellum and is currently classified into 17 types (PCH1-PCH17). PCH1 is distinguishable from other types by the association of spinal motor neuron dysfunction. Based on the underlying genetic etiology, PCH1 is further classified into 6 different subtypes (PCH1 A-F). Of them, PCH type 1C is caused by pathogenic variants in EXOSC8 gene and so far, only four families have been described in the literature...
November 29, 2023: Journal of Human Genetics
https://read.qxmd.com/read/38012394/novel-missense-variants-cause-intermediate-phenotypes-in-the-phenotypic-spectrum-of-slc5a6-related-disorders
#57
JOURNAL ARTICLE
Yasuhiro Utsuno, Keisuke Hamada, Kohei Hamanaka, Keita Miyoshi, Keiji Tsuchimoto, Satoshi Sunada, Toshiyuki Itai, Masamune Sakamoto, Naomi Tsuchida, Yuri Uchiyama, Eriko Koshimizu, Atsushi Fujita, Satoko Miyatake, Kazuharu Misawa, Takeshi Mizuguchi, Yasuhito Kato, Kuniaki Saito, Kazuhiro Ogata, Naomichi Matsumoto
SLC5A6 encodes the sodium-dependent multivitamin transporter, a transmembrane protein that uptakes biotin, pantothenic acid, and lipoic acid. Biallelic SLC5A6 variants cause sodium-dependent multivitamin transporter deficiency (SMVTD) and childhood-onset biotin-responsive peripheral motor neuropathy (COMNB), which both respond well to replacement therapy with the above three nutrients. SMVTD usually presents with various symptoms in multiple organs, such as gastrointestinal hemorrhage, brain atrophy, and global developmental delay, at birth or in infancy...
November 27, 2023: Journal of Human Genetics
https://read.qxmd.com/read/37993639/identification-of-potential-disease-associated-variants-in-idiopathic-generalized-epilepsy-using-targeted-sequencing
#58
JOURNAL ARTICLE
Regina Gamirova, Elena Shagimardanova, Takehiro Sato, Takayuki Kannon, Rimma Gamirova, Atsushi Tajima
Many questions remain regarding the genetics of idiopathic generalized epilepsy (IGE), a subset of genetic generalized epilepsy (GGE). We aimed to identify the candidate coding variants of epilepsy panel genes in a cohort of affected individuals, using variant frequency information from a control cohort of the same region. We performed whole-exome sequencing analysis of 121 individuals and 10 affected relatives, focusing on variants of 950 candidate genes associated with epilepsy according to the Genes4Epilepsy curated panel...
November 22, 2023: Journal of Human Genetics
https://read.qxmd.com/read/37950019/nanopore-long-read-sequencing-analysis-reveals-zic1-dysregulation-caused-by-a-de-novo-3q-inversion-with-a-breakpoint-located-7%C3%A2-kb-downstream-of-zic1
#59
JOURNAL ARTICLE
Hiroaki Murakami, Yumi Enomoto, Tatsuro Kumaki, Noriko Aida, Kenji Kurosawa
Zic family member 1 (ZIC1), a gene located on chromosome 3q24, encodes a transcription factor with zinc finger domains that is essential for the normal development of the cerebellum. Heterozygous loss-of-function of ZIC1 causes Dandy-Walker malformation, while heterozygous gain-of-function leads to a multiple congenital anomaly syndrome characterized by craniosynostosis, brain abnormalities, facial features, and learning disability. In this study, we present the results of genetic analysis of a male patient with clinically suspected Gomez-Lopez-Hernandez syndrome...
November 10, 2023: Journal of Human Genetics
https://read.qxmd.com/read/37907557/diversity-of-thought-public-perceptions-of-genetic-testing-across-ethnic-groups-in-the-uk
#60
JOURNAL ARTICLE
Benjamin H L Harris, Caitlin McCabe, Hana Shafique, Simon Lammy, Laura Tookman, James Flanagan, Sofia Miron-Barroso, Mark Lythgoe, James Clark, Jason L Walsh, Matteo Di Giovannantonio, Jonathan Krell
Genetic testing is becoming rapidly more accessible to the general populous either through or outside healthcare systems. Few large-scale studies have been carried out to gauge public opinion in this growing area. Here, we undertook the largest cross-sectional study on genetic testing in the UK. The primary purpose of this study is to identify the differences in attitudes toward genetic testing across ethnic groups. A cohort of 6500 individuals from a diverse population completed a 72-item survey in a cross-sectional study...
November 1, 2023: Journal of Human Genetics
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