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BMC Medical Genetics

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https://www.readbyqxmd.com/read/28818065/case-reports-of-two-pedigrees-with-recessive-arrhythmogenic-right-ventricular-cardiomyopathy-associated-with-homozygous-thr335ala-variant-in-dsg2
#1
Sami Qadri, Olli Anttonen, Juho Viikilä, Eija H Seppälä, Samuel Myllykangas, Tero-Pekka Alastalo, Miia Holmström, Tiina Heliö, Juha W Koskenvuo
BACKGROUND: Arrhythmogenic right ventricular cardiomyopathy (ARVC) is an inherited cardiac disease, involving changes in ventricular myocardial tissue and leading to fatal arrhythmias. Mutations in desmosomal genes are thought to be the main cause of ARVC. However, the exact molecular genetic etiology of the disease still remains largely inconclusive, and this along with large variabilities in clinical manifestations complicate clinical diagnostics. CASE PRESENTATION: We report two families (n = 20) in which a desmoglein-2 (DSG2) missense variant c...
August 17, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28814288/monoallelic-characteristic-bearing-heterozygous-l1053x-in-brca2-gene-among-sudanese-women-with-breast-cancer
#2
Alsmawal A Elimam, Mohamed Elmogtba Mouaweia Mohamed Aabdein, Mohamed El-Fatih Moly Eldeen, Hisham N Altayb, Mohamed Adel Taha, Mohammed N Nimir, Mohamed D Dafaalla, Musaab M Alfaki, Mohamed A Abdelrahim, Abdelmohaymin A Abdalla, Musab I Mohammed, Mona Ellaithi, Muzamil Mahdi Abdel Hamid, Mohamed Ahmed Salih Hassan
BACKGROUND: Breast cancer (BC) is the most common type of cancer in women. Among many risk factors of BC, mutations in BRCA2 gene were found to be the primary cause in 5-10% of cases. The majority of deleterious mutations are frameshift or nonsense mutations. Most of the reported BRCA2 mutations are protein truncating mutations. METHODS: The study aimed to describe the pattern of mutations including single nucleotide polymorphisms (SNPs) and variants of the BRCA2 (exon11) gene among Sudanese women patients diagnosed with BC...
August 16, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28806901/polymorphism-rs189037c%C3%A2-%C3%A2-t-in-the-promoter-region-of-the-atm-gene-may-associate-with-reduced-risk-of-t2dm-in-older-adults-in-china-a-case-control-study
#3
Xiang Ding, Qiukui Hao, Ming Yang, Tie Chen, Shanping Chen, Jirong Yue, Sean X Leng, Birong Dong
BACKGROUND: Recent evidence indicates that ataxia telangiectasia mutated (ATM) is a cytoplasmic protein that involves in insulin signaling pathways. When ATM gene is mutated, this event appears to contribute to the development of insulin resistance and type 2 diabetes mellitus (T2DM). Up to date, little information about the relationship between ATM gene polymorphism and T2DM is available. This study aimed to explore potential association between a genetic variant [single nucleotide polymorphism (SNP), i...
August 14, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28774260/large-intragenic-deletion-of-cdc73-exons-4-10-in-a-three-generation-hyperparathyroidism-jaw-tumor-hpt-jt-syndrome-family
#4
Vito Guarnieri, Raewyn M Seaberg, Catherine Kelly, M Jean Davidson, Simon Raphael, Andrew Y Shuen, Filomena Baorda, Orazio Palumbo, Alfredo Scillitani, Geoffrey N Hendy, David E C Cole
BACKGROUND: Inactivating mutations of CDC73 cause Hyperparathyroidism-Jaw Tumour syndrome (HPT-JT), Familial Isolated Hyperparathyroidism (FIHP) and sporadic parathyroid carcinoma. We conducted CDC73 mutation analysis in an HPT-JT family and confirm carrier status of the proband's daughter. METHODS: The proband had primary hyperparathyroidism (parathyroid carcinoma) and uterine leiomyomata. Her father and daughter had hyperparathyroidism (parathyroid adenoma) but no other manifestations of HPT-JT...
August 3, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28768485/a-systematic-review-of-genetic-mutations-in-pulmonary-arterial-hypertension
#5
Gerardo Garcia-Rivas, Carlos Jerjes-Sánchez, David Rodriguez, José Garcia-Pelaez, Victor Trevino
BACKGROUND: Pulmonary arterial hypertension (PAH) is a group of vascular diseases that produce right ventricular dysfunction, heart failure syndrome, and death. Although the majority of patients appear idiopathic, accumulated research work combined with current sequencing technology show that many gene variants could be an important component of the disease. However, current guidelines, clinical practices, and available gene panels focus the diagnosis of PAH on a relatively low number of genes and variants associated with the bone morphogenic proteins and transforming Growth Factor-β pathways, such as the BMPR2, ACVRL1, CAV1, ENG, and SMAD9...
August 2, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28764642/the-susceptibility-of-fshb-211g%C3%A2-%C3%A2-t-and-fshr-g-29a-919a%C3%A2-%C3%A2-g-2039a%C3%A2-%C3%A2-g-polymorphisms-to-men-infertility-an-association-study-and-meta-analysis
#6
Qiuyue Wu, Jing Zhang, Peiran Zhu, Weijun Jiang, Shuaimei Liu, Mengxia Ni, Mingchao Zhang, Weiwei Li, Qing Zhou, Yingxia Cui, Xinyi Xia
BACKGROUND: Male infertility is a complex disorder caused by genetic, developmental, endocrine, or environmental factors as well as unknown etiology. Polymorphisms in the follicle stimulating hormone beta subunit (FSHB) (rs10835638, c.-211G > T) and follicle stimulating hormone receptor (FSHR) (rs1394205, c.-29G > A; rs6165, c.919A > G; rs6166, c.2039 A > G) genes might disturb normal spermatogenesis and affect male reproductive ability. METHODS: To further ascertain the aforementioned effects, we conducted a case-control study of 255 infertile men and 340 fertile controls from South China using the Mass ARRAY method, which was analyzed by the t-tests and logistic regression analysis using SPSS for Windows 14...
August 1, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28754107/interaction-between-obesity-and-the-hypoxia-inducible-factor-3-alpha-subunit-rs3826795-polymorphism-in-relation-with-plasma-alanine-aminotransferase
#7
Shuo Wang, Jieyun Song, Yide Yang, Yining Zhang, Nitesh V Chawla, Jun Ma, Haijun Wang
BACKGROUND: Hypoxia Inducible Factor 3 Alpha Subunit (HIF3A) DNA has been demonstrated to be associated with obesity in the methylation level, and it also has a Body Mass Index (BMI)-independent association with plasma alanine aminotransferase (ALT). However, the relation among obesity, plasma ALT, HIF3A polymorphism and methylation remains unclear. This study aims to identify the association between HIF3A polymorphism and plasma ALT, and further to determine whether the effect of HIF3A polymorphism on ALT could be modified by obesity or mediated by DNA methylation...
July 28, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28747166/cascade-fumarate-hydratase-mutation-screening-allows-early-detection-of-kidney-tumour-a-case-report
#8
Melanie M Y Chan, Angela Barnicoat, Faiz Mumtaz, Michael Aitchison, Lucy Side, Helen Brittain, Alan W H Bates, Daniel P Gale
BACKGROUND: Fumarate hydratase (FH) deficiency is a rare autosomal recessive disorder which results in a major defect in cellular metabolism. It presents in infancy with progressive encephalopathy, hypotonia, seizures and failure to thrive and is often fatal in childhood. It is caused by mutations in the FH gene (1q42.1) that result in deficiency of the citric acid cycle enzyme fumarate hydratase, resulting in accumulation of fumaric acid. Heterozygous germline mutations in the FH gene predispose to an aggressive autosomal dominant inherited early-onset kidney cancer syndrome: hereditary leiomyomatosis and renal cell cancer (HLRCC)...
July 26, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28747152/associations-between-male-infertility-and-ancestry-in-south-americans-a-case-control-study
#9
Maria Fernanda Skowronek, Tatiana Velazquez, Patricia Mut, Gonzalo Figueiro, Monica Sans, Bernardo Bertoni, Rossana Sapiro
No abstract text is available yet for this article.
July 26, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28738793/association-between-28-single-nucleotide-polymorphisms-and-type-2-diabetes-mellitus-in-the-kazakh-population-a-case-control-study
#10
Nurgul Sikhayeva, Aisha Iskakova, Nuria Saigi-Morgui, Elena Zholdybaeva, Chin-Bin Eap, Erlan Ramanculov
BACKGROUND: We evaluated the associations between single nucleotide polymorphisms and different clinical parameters related to type 2 diabetes mellitus (T2DM), obesity risk, and metabolic syndrome (MS) in a Kazakh cohort. METHODS: A total of 1336 subjects, including 408 T2DM patients and 928 control subjects, were recruited from an outpatient clinic and genotyped for 32 polymorphisms previously associated with T2DM and obesity-related phenotypes in other ethnic groups...
July 24, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28738792/functional-study-of-dand5-variant-in-patients-with-congenital-heart-disease-and-laterality-defects
#11
Fernando Cristo, José M Inácio, Salomé de Almeida, Patrícia Mendes, Duarte Saraiva Martins, José Maio, Rui Anjos, José A Belo
BACKGROUND: Perturbations on the Left-Right axis establishment lead to laterality defects, with frequently associated Congenital Heart Diseases (CHDs). Indeed, in the last decade, it has been reported that the etiology of isolated cases of CHDs or cases of laterality defects with associated CHDs is linked with variants of genes involved in the Nodal signaling pathway. METHODS: With this in mind, we analyzed a cohort of 38 unrelated patients with Congenital Heart Defects that can arise from initial perturbations in the formation of the Left-Right axis and 40 unrelated ethnically matched healthy individuals as a control population...
July 24, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28724398/whole-genome-sequencing-identifies-a-novel-alms1-gene-mutation-in-two-chinese-siblings-with-alstr%C3%A3-m-syndrome
#12
Lin Yang, Zixiu Li, Mei Mei, Xiaomei Fan, Guodong Zhan, Huijun Wang, Guoying Huang, Mingbang Wang, Weidong Tian, Wenhao Zhou
BACKGROUND: Alström syndrome is a rare multi-systemic disorder with a broad spectrum of symptoms. This syndrome is characterized by childhood retinal degeneration; sensorineural hearing loss; obesity; type 2 diabetes mellitus; cardiomyopathy; systemic fibrosis; and pulmonary, hepatic, and renal failure. CASE PRESENTATION: A Chinese quartet family with two siblings predominantly affected by cone-rod dystrophy and short stature were recruited. The craniofacial dysmorphism and on-set age-of-cone-rod dystrophy in the proband showed a minor intrafamilial variability...
July 19, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28720088/sex-is-a-moderator-of-the-association-between-nos1ap-sequence-variants-and-qtc-in-two-long-qt-syndrome-founder-populations-a-pedigree-based-measured-genotype-association-analysis
#13
Annika Winbo, Eva-Lena Stattin, Ida Maria Westin, Anna Norberg, Johan Persson, Steen M Jensen, Annika Rydberg
BACKGROUND: Sequence variants in the NOS1AP gene have repeatedly been reported to influence QTc, albeit with moderate effect sizes. In the long QT syndrome (LQTS), this may contribute to the substantial QTc variance seen among carriers of identical pathogenic sequence variants. Here we assess three non-coding NOS1AP sequence variants, chosen for their previously reported strong association with QTc in normal and LQTS populations, for association with QTc in two Swedish LQT1 founder populations...
July 18, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28716012/case-reports-of-juvenile-gm1-gangliosidosisis-type-ii-caused-by-mutation-in-glb1-gene
#14
Parvaneh Karimzadeh, Samaneh Naderi, Farzaneh Modarresi, Hassan Dastsooz, Hamid Nemati, Tayebeh Farokhashtiani, Bibi Shahin Shamsian, Soroor Inaloo, Mohammad Ali Faghihi
BACKGROUND: Type II or juvenile GM1-gangliosidosis is an autosomal recessive lysosomal storage disorder, which is clinically distinct from infantile form of the disease by the lack of characteristic cherry-red spot and hepatosplenomegaly. The disease is characterized by slowly progressive neurodegeneration and mild skeletal changes. Due to the later age of onset and uncharacteristic presentation, diagnosis is frequently puzzled with other ataxic and purely neurological disorders. Up to now, 3-4 types of GM1-gangliosidosis have been reported and among them type I is the most common phenotype with the age of onset around 6 months...
July 17, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28709401/signal-transducer-and-activator-of-transcription-3-stat3-promoter-methylation-and-expression-in-pituitary-adenoma
#15
Indre Valiulyte, Giedrius Steponaitis, Daina Skiriute, Arimantas Tamasauskas, Paulina Vaitkiene
BACKGROUND: Pituitary adenoma (PA) is a benign brain tumor that can cause neurological, endocrinological and ophthalmological aberrations. Till now there is a need to identify factors that can influence the tumor invasiveness and recurrence. The aim of this study was to evaluate the associations between the signal transducer and activator of transcription 3 (STAT3) promoter methylation, mRNA expression and the invasiveness or recurrence of PAs and patient clinical characteristics. METHODS: Study participants comprised of 102 subjects with a diagnosis of PA: 54 functioning and 48 non-functioning, 58 invasive and 30 non-invasive PAs and 14 relapses...
July 14, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28705149/f-treegc-a-questionnaire-based-family-tree-creation-software-for-genetic-counseling-and-genome-cohort-studies
#16
RANDOMIZED CONTROLLED TRIAL
Tomoharu Tokutomi, Akimune Fukushima, Kayono Yamamoto, Yasushi Bansho, Tsuyoshi Hachiya, Atsushi Shimizu
BACKGROUND: The Tohoku Medical Megabank project aims to create a next-generation personalized healthcare system by conducting large-scale genome-cohort studies involving three generations of local residents in the areas affected by the Great East Japan Earthquake. We collected medical and genomic information for developing a biobank to be used for this healthcare system. We designed a questionnaire-based pedigree-creation software program named "f-treeGC," which enables even less experienced medical practitioners to accurately and rapidly collect family health history and create pedigree charts...
July 14, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28683740/using-kasp-technique-to-screen-lrrk2-g2019s-mutation-in-a-large-tunisian-cohort
#17
Zied Landoulsi, Sawssan Benromdhan, Mouna Ben Djebara, Mariem Damak, Hamza Dallali, Rym Kefi, Sonia Abdelhak, Amina Gargouri-Berrechid, Chokri Mhiri, Riadh Gouider
BACKGROUND: In North African populations, G2019S mutation in LRRK2 gene, encoding for the leucine-rich repeat kinase 2, is the most prevalent mutation linked to familial and sporadic Parkinson's disease (PD). Early detection of G2019S by fast genetic testing is very important to guide PD's diagnosis and support patients and their family caregivers for better management of their life according to disease's evolution. METHODS: In our study, a genetic PD's diagnosis tool was developed for large scale genotyping using Kompetitive Allele Specific PCR (KASP) technology...
July 6, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28651521/association-study-of-candidate-genes-for-susceptibility-to-kashin-beck-disease-in-a-tibetan-population
#18
Zhengfu Tai, Lulin Huang, Fang Lu, Yi Shi, Shi Ma, Jing Cheng, He Lin, Xin Liu, Yuanfeng Li, Zhenglin Yang
BACKGROUND: Many osteoarthritis (OA) susceptibility genes have been identified in recent years. Given the overlap in the phenotype of joint inflammation between OA and Kashin-Beck disease (KBD), the aim of this study is to explore whether the reported OA susceptibility genes and two genes that may link to OA pathophysiology are associated with KBD in the Tibetan population. METHOD: Fifteen single-nucleotide polymorphisms (SNPs) in 12 candidate genes previously reported as OA susceptibility loci were selected for investigation...
June 26, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28619046/identification-of-a-novel-ctcf-mutation-responsible-for-syndromic-intellectual-disability-a-case-report
#19
Fatma Bastaki, Pratibha Nair, Madiha Mohamed, Ethar Mustafa Malik, Mustafa Helmi, Mahmoud Taleb Al-Ali, Abdul Rezzak Hamzeh
BACKGROUND: Autosomal dominant mental retardation 21 (MRD21) is a very rare condition, characterized by short stature, microcephaly, mild facial dysmorphisms and intellectual disability that ranged from mild to severe. MRD21 is caused by mutations in CCCTC-binding factor (CTCF) and this was established through only four unrelated cases, two of which had frameshift mutations. CTCF is a master transcriptional regulator that controls chromatin structure and may serve as insulator and transcriptional activator and repressor...
June 15, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28610567/mlpa-identification-of-dystrophin-mutations-and-in-silico-evaluation-of-the-predicted-protein-in-dystrophinopathy-cases-from-india
#20
Sekar Deepha, Seena Vengalil, Veeramani Preethish-Kumar, Kiran Polavarapu, Atchayaram Nalini, Narayanappa Gayathri, Meera Purushottam
BACKGROUND: Duchenne muscular dystrophy (DMD) and Becker muscular dystrophy (BMD) are X-linked recessive disorders caused by mutations in the DMD gene. The aim of this study was to predict the effect of gene mutations on the dystrophin protein and study its impact on clinical phenotype. METHODS: In this study, 415 clinically diagnosed patients were tested for mutations by Multiplex ligation dependent probe amplification (MLPA). Muscle biopsy was performed in 34 patients with negative MLPA...
June 13, 2017: BMC Medical Genetics
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