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Journal of Human Genetics

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https://www.readbyqxmd.com/read/28978928/the-2017-jhg-young-scientist-award
#1
EDITORIAL
Naomichi Matsumoto
No abstract text is available yet for this article.
October 5, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28904386/skewed-x-inactivation-in-lesch-nyhan-disease-carrier-females
#2
Rosa J Torres, Juan G Puig
X chromosome inactivation (XCI) ratios of normal females can range from a highly skewed ratio of 0:100 to a 50:50 ratio. In several X-linked disorders, female carriers present skewed X inactivation. Hypoxanthine-guanine phosphoribosyltransferase (HPRT) deficiency is an X-linked disorder. Males are affected and present with the complete Lesch-Nyhan disease (LND) or with a partial phenotype (Lesch-Nyhan variant, LNV). Female carriers are usually asymptomatic. The aim of the present study was to analyze the XCI pattern of HPRT-deficiency carrier females...
September 14, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28878340/the-pharmacogenomics-of-valproic-acid
#3
REVIEW
Miao-Miao Zhu, Hui-Lan Li, Li-Hong Shi, Xiao-Ping Chen, Jia Luo, Zan-Ling Zhang
Valproic acid is an anticonvulsant and mood-stabilizing drug used primarily in the treatment of epilepsy and bipolar disorder. Adverse effects of valproic acid are rare, but hepatotoxicity is severe in particular in those younger than 2 years old and polytherapy. During valproic acid treatment, it is difficult for prescribers to predict its individual response. Recent advances in the field of pharmacogenomics have indicated variants of candidate genes that affect valproic acid efficacy and safety. In this review, a large number of candidate genes that influence valproic acid pharmacokinetics and pharmacodynamics are discussed, including metabolic enzymes, drug transporters, neurotransmitters and drug targets...
September 7, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28878339/pathogen-lineage-based-genome-wide-association-study-identified-cd53-as-susceptible-locus-in-tuberculosis
#4
Yosuke Omae, Licht Toyo-Oka, Hideki Yanai, Supalert Nedsuwan, Sukanya Wattanapokayakit, Nusara Satproedprai, Nat Smittipat, Prasit Palittapongarnpim, Pathom Sawanpanyalert, Wimala Inunchot, Ekawat Pasomsub, Nuanjun Wichukchinda, Taisei Mushiroda, Michiaki Kubo, Katsushi Tokunaga, Surakameth Mahasirimongkol
Tuberculosis (TB) is known to be affected by host genetic factors. We reported a specific genetic risk factor through a genome-wide association study (GWAS) that focused on young age onset TB. In this study, we further focused on the heterogeneity of Mycobacterium tuberculosis (M. tb) lineages and assessed its possible interaction with age at onset on host genetic factors. We identified the pathogen lineage in 686 Thai TB cases and GWAS stratified by both infected pathogen lineage information and age at onset revealed a genome-wide significant association of one single-nucleotide polymorphism (SNP) on chromosome 1p13, which was specifically associated with non-Beijing lineage-infected old age onset cases (P=2...
September 7, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28878338/the-clinical-characteristics-of-asian-patients-with-classical-type-hutchinson-gilford-progeria-syndrome
#5
Nanae Sato-Kawano, Minoru Takemoto, Emiko Okabe, Koutaro Yokote, Muneaki Matsuo, Rika Kosaki, Kenji Ihara
Hutchinson-Gilford progeria syndrome (HGPS) is an extremely rare genetic disorder that shows a characteristic progeria phenotype. We conducted a questionnaire survey of 1173 tertiary hospitals in Japan and reviewed the academic reports, to identify the characteristics of Asian patients with classical HGPS. As a result, four Japanese patients were identified; this was estimated to account for approximately two-third of the prevalence in Japan. Three Asian patients who had definitively been diagnosed with classical HGPS were identified in the literature; in total, the clinical characteristics of seven patients were evaluated...
September 7, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28878337/precise-mapping-of-17-deletion-breakpoints-within-the-central-hotspot-deletion-region-introns-50-and-51-of-the-dmd-gene
#6
Gabriella Esposito, Maria Roberta Tremolaterra, Evelina Marsocci, Igor Cm Tandurella, Tiziana Fioretti, Maria Savarese, Antonella Carsana
Exon deletions in the human DMD gene, which encodes the dystrophin protein, are the molecular defect in 50-70% of cases of Duchenne/Becker muscular dystrophies. Deletions are preferentially clustered in the 5' (exons 2-20) and the central (exons 45-53) region of DMD, likely because local DNA structure predisposes to specific breakage or recombination events. Notably, innovative therapeutic strategies may rescue dystrophin function by homology-based specific targeting of sequences within the central DMD hot spot deletion region...
September 7, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28878336/effect-of-gnrhr-polymorphisms-on-in-vitro-fertilization-and-embryo-transfer-in-patients-with-polycystic-ovary-syndrome
#7
Wei-Yan Chen, Yan-Qiu Du, Xia Guan, Hong-Yun Zhang, Ting Liu
We investigated the relationship between gonadotropin-releasing hormone receptor (GnRHR) gene polymorphisms and outcome of patients with polycystic ovary syndrome (PCOS) undergoing in vitro fertilization and embryo transfer (IVF-ET). PCOS patients undergoing IVF-ET were selected, and infertile patients due to dysfunctional oviducts served as controls. GnRHR gene polymorphisms were detected using the polymerase chain reaction-restriction fragment length polymorphism assay. Gene-gene interaction and linkage disequilibrium tests were performed using the SHEsis software...
September 7, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28855716/a-genome-wide-association-analysis-identifies-nmnat2-and-hcp5-as-susceptibility-loci-for-kawasaki-disease
#8
Jae-Jung Kim, Sin Weon Yun, Jeong Jin Yu, Kyung Lim Yoon, Kyung-Yil Lee, Hong-Ryang Kil, Gi Beom Kim, Myung-Ki Han, Min Seob Song, Hyoung Doo Lee, Kee Soo Ha, Sejung Sohn, Todd A Johnson, Atsushi Takahashi, Michiaki Kubo, Tatsuhiko Tsunoda, Kaoru Ito, Yoshihiro Onouchi, Young Mi Hong, Gi Young Jang, Jong-Keuk Lee
Kawasaki disease (KD), a systemic vasculitis of infants and children, manifests as fever and mucocutaneous inflammation. Although its etiology is largely unknown, the epidemiological data suggest that genetic factors are important in KD susceptibility. To identify genetic variants influencing KD susceptibility, we performed a genome-wide association study (GWAS) and replication study using a total of 915 children with KD and 4553 controls in the Korean population. Six single-nucleotide polymorphisms (SNPs) in three loci were associated significantly with KD susceptibility (P<1...
August 31, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28855715/santos-syndrome-is-caused-by-mutation-in-the-wnt7a-gene
#9
Leandro U Alves, Silvana Santos, Camila M Musso, Suzana Am Ezquina, John M Opitz, Fernando Kok, Paulo A Otto, Regina C Mingroni-Netto
We have recently described a family with a condition (Santos syndrome (SS; MIM 613005)) characterized by fibular agenesis/hypoplasia, hypoplastic femora and grossly malformed/deformed clubfeet with severe oligodactyly, ungual hypoplasia/anonychia, sometimes associated with mild brachydactyly and occasional pre-axial polydactyly. Autosomal dominant inheritance with incomplete penetrance was suggested, but autosomal recessive inheritance could not be ruled out, due to the high frequency of consanguineous matings in the region where the family lived...
August 31, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28835638/shared-genetic-variants-for-polypoidal-choroidal-vasculopathy-and-typical-neovascular-age-related-macular-degeneration-in-east-asians
#10
Qiao Fan, Chui Ming Gemmy Cheung, Li Jia Chen, Kenji Yamashiro, Jeeyun Ahn, Augustinus Laude, Ranjana Mathur, Chan Choi Mun, Ian Y Yeo, Tock Han Lim, Yik-Ying Teo, Chiea Chuen Khor, Kyu-Hyung Park, Nagahisa Yoshimura, Chi Pui Pang, Tien Yin Wong, Ching-Yu Cheng
Polypoidal choroidal vasculopathy (PCV), a subtype of age-related macular degeneration (AMD) more frequently seen in East Asians, has both common and distinct clinical manifestations with typical neovascular AMD (tAMD). We aim to examine the extent to which common genetic variants are shared between these two subtypes. We performed the meta-analysis of association in a total of 1062 PCV patients, 1157 tAMD patients and 5275 controls of East Asian descent from the Genetics of AMD in Asians Consortium at the 34 known AMD loci...
August 24, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28794501/population-based-biobank-participants-preferences-for-receiving-genetic-test-results
#11
Kayono Yamamoto, Tsuyoshi Hachiya, Akimune Fukushima, Naoki Nakaya, Akira Okayama, Kozo Tanno, Fumie Aizawa, Tomoharu Tokutomi, Atsushi Hozawa, Atsushi Shimizu
There are ongoing debates on issues relating to returning individual research results (IRRs) and incidental findings (IFs) generated by genetic research in population-based biobanks. To understand how to appropriately return genetic results from biobank studies, we surveyed preferences for returning IRRs and IFs among participants of the Tohoku Medical Megabank Project (TMM). We mailed a questionnaire to individuals enrolled in the TMM cohort study (Group 1; n=1031) and a group of Tohoku region residents (Group 2; n=2314)...
August 10, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28747691/the-absence-that-makes-the-difference-choroidal-abnormalities-in-legius-syndrome
#12
Arianna Tucci, Veronica Saletti, Francesca Menni, Claudia Cesaretti, Giulietta Scuvera, Silvia Esposito, Giulia Melloni, Susanna Esposito, Donatella Milani, Cristina Cereda, Mario Cigada, Laura Tresoldi, Francesco Viola, Federica Natacci
Neurofibromatosis type 1 (NF1) is an hereditary disorder characterized by abnormal proliferation of multiple tissues of neural crest origin, and presents mainly with multiple café-au-lait macules, axillary freckling and neurofibromas. Choroidal involvement in NF1 patients has been studied, thanks to the development of non-invasive tools such as infrared monochromatic light during fundus examination, which showed bright patchy lesions consistent with choroidal nodules. Choroidal abnormalities identified with near-infrared reflectance have reported with a frequency of up to 100% in NF1, and have been recently been proposed as a novel diagnostic criterion for NF1...
July 27, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28747690/postmortem-genetic-analysis-of-sudden-unexpected-death-in-infancy-neonatal-genetic-screening-may-enable-the-prevention-of-sudden-infant-death
#13
Yuki Oshima, Takuma Yamamoto, Taisuke Ishikawa, Hiroyuki Mishima, Aya Matsusue, Takahiro Umehara, Takehiko Murase, Yuki Abe, Shin-Ichi Kubo, Koh-Ichiro Yoshiura, Naomasa Makita, Kazuya Ikematsu
Tandem mass screening has recently been started in Japan, but genetic screening has yet to be widely performed in neonates and many unexpected deaths are still being reported. We previously reported two cases of sudden infant death that may have been prevented had newborn screening been performed. In this study, we retrospectively reviewed 71 cases of sudden infant death for 66 arrhythmia- and 63 metabolic disease-related genes to identify how many cases of sudden infant death may have been prevented had mass screening been performed...
July 27, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28943641/corrigendum-genetic-diagnosis-of-duchenne-becker-muscular-dystrophy-using-next-generation-sequencing-validation-analysis-of-dmd-mutations
#14
Mariko Okubo, Narihiro Minami, Kanako Goto, Yuichi Goto, Satoru Noguchi, Satomi Mitsuhashi, Ichizo Nishino
This corrects the article DOI: 10.1038/jhg.2016.7.
October 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28680110/deletions-not-duplications-or-small-mutations-are-the-predominante-new-mutations-in-the-dystrophin-gene
#15
Janusz G Zimowski, Magdalena Pawelec, Joanna K Purzycka, Walentyna Szirkowiec, Jacek Zaremba
Examination of the carrier state was performed in 744 unrelated mothers of the Duchenne muscular dystrophy/Becker muscular dystrophy (DMD/BMD) probands with identified mutations in the dystrophin gene. Owing to that it was possible to assess frequency and type of new mutations in the gene. Contrary to the Japanese observations of Lee et al. published in this journal, we did not find significant differences in the carrier frequency between mothers of DMD and BMD patients. However, we found that new mutations in patients with deletions were significantly more frequent than in those with duplications and small mutations: of 564 unrelated patients with deletions, 236 (41...
October 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28659611/a-common-deletion-in-the-haptoglobin-gene-associated-with-blood-cholesterol-levels-among-chinese-women
#16
Neil S Zheng, Lisa A Bastarache, Julie A Bastarache, Yingchang Lu, Lorraine B Ware, Xiao-Ou Shu, Joshua C Denny, Jirong Long
Haptoglobin (HP) protein plays a critical role in binding and removing free hemoglobin from blood. A deletion in the HP gene affects the protein structure and function. A recent study developed a novel method to impute this variant and discovered significant association of this variant with low-density lipoprotein (LDL) and total cholesterol levels among European descendants. In the present study, we investigated this variant among 3608 Chinese women. Consistent with findings from Europeans, we found significant associations between the deletion with lower cholesterol levels; women homozygous for the deletion allele (HP1-HP1), had a lower level of total cholesterol (-4...
October 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28638143/siblings-with-optic-neuropathy-and-rtn4ip1-mutation
#17
Nobuhiko Okamoto, Fuyuki Miya, Yoshikazu Hatsukawa, Yasuhiro Suzuki, Kazumi Kawato, Yuto Yamamoto, Tatsuhiko Tsunoda, Mitsuhiro Kato, Shinji Saitoh, Mami Yamasaki, Yonehiro Kanemura, Kenjiro Kosaki
Inherited optic neuropathies (IONs) are neurodegenerative disorders affecting the optic nerve and the nervous system. Dominant and recessive IONs are known. Many of the dominant IONs are caused by mutations of OPA1. Autosomal-recessive IONs are rare. OPA10 is an autosomal-recessive ION due to mutations in RTN4IP1. Patients with RTN4IP1 mutations show extraocular manifestations. We report brothers with optic neuropathy who had novel mutations in the RTN4IP1 gene. This is the first report of Japanese patients with OPA10...
October 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28638142/inter-generational-instability-of-inserted-repeats-during-transmission-in-spinocerebellar-ataxia-type-31
#18
Kunihiro Yoshida, Akira Matsushima, Katsuya Nakamura
The causative mutation for spinocerebellar ataxia type 31 (SCA31) is an intronic insertion containing pathogenic pentanucleotide repeats, (TGGAA)n. We examined to what degree the inserted repeats were unstable during transmission. In 14 parent-child pairs, the average change of onset age was -6.4±7.3 years (mean±s.d.) in the child generation when compared with the parent generation. Of the 11 pairs analyzed, six showed expansion of inserted repeat length during transmission, and five showed contraction. On average, the inserted repeats expanded by 12...
October 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28638141/al-mena-a-comprehensive-resource-of-human-genetic-variants-integrating-genomes-and-exomes-from-arab-middle-eastern-and-north-african-populations
#19
Remya Koshy, Anop Ranawat, Vinod Scaria
Middle East and North Africa (MENA) encompass very unique populations, with a rich history and encompasses characteristic ethnic, linguistic and genetic diversity. The genetic diversity of MENA region has been largely unknown. The recent availability of whole-exome and whole-genome sequences from the region has made it possible to collect population-specific allele frequencies. The integration of data sets from this region would provide insights into the landscape of genetic variants in this region. We integrated genetic variants from multiple data sets systematically, available from this region to create a compendium of over 26 million genetic variations...
October 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28615674/meta-analysis-of-genome-wide-snp-and-pathway-based-associations-for-facets-of-neuroticism
#20
Song E Kim, Han-Na Kim, Yeo-Jun Yun, Seong Gu Heo, Juhee Cho, Min-Jung Kwon, Yoosoo Chang, Seungho Ryu, Hocheol Shin, Chol Shin, Nam H Cho, Yeon Ah Sung, Hyung-Lae Kim
Neuroticism is a heritable personality trait that is comprised of distinct sub-factors, or facets. Sub-factors of neuroticism are linked to different emotional states or psychiatric symptoms and studying the genetic variants associated with these facets may help reveal the biological mechanisms underlying psychiatric disorders. In the present study, a meta-analysis of genome-wide association studies for six facets of neuroticism was performed in 5584 participants from three cohorts. Additionally, a Gene Set Enrichment Analysis was conducted to find biological pathways associated with each facet...
October 2017: Journal of Human Genetics
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