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BMC Medical Genetics

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https://www.readbyqxmd.com/read/28525974/pancreas-and-gallbladder-agenesis-in-a-newborn-with-semilobar-holoprosencephaly-a-case-report
#1
Robert Hilbrands, Kathelijn Keymolen, Alex Michotte, Miriam Marichal, Filip Cools, Anieta Goossens, Peter In't Veld, Jean De Schepper, Andrew Hattersley, Harry Heimberg
BACKGROUND: Pancreatic agenesis is an extremely rare cause of neonatal diabetes mellitus and has enabled the discovery of several key transcription factors essential for normal pancreas and beta cell development. CASE PRESENTATION: We report a case of a Caucasian female with complete pancreatic agenesis occurring together with semilobar holoprosencephaly (HPE), a more common brain developmental disorder. Clinical findings were later confirmed by autopsy, which also identified agenesis of the gallbladder...
May 19, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28521825/association-of-4p14-and-6q27-variation-with-graves-disease-a-case-control-study-and-a-meta-analysis-of-available-evidence
#2
Fa-Mei Li, Lin Liu, Li-Nan Pang, Min Shen, Hong-Wen Lu, Xiao-Hong Zhang, Xun Chu, Zhen-Ju Song
BACKGROUND: The etiology of the Graves' disease (GD) is largely unknown. However, genetic factors are believed to play a major role. A recent genome-wide association study in a Han Chinese sample collection revealed two new Graves' disease (GD) risk loci within chromosome band 4p14 and 6q27. In this study, we aimed to investigate these associations with Weifang Han Chinese population of Shandong province and perform a meta-analysis of associations with GD. METHODS: A case-control study was conducted to investigate association of variation within 4p14 and 6q27 to GD susceptibility in Weifang Han Chinese population of Shandong province...
May 18, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28506293/case-report-of-unexpected-gastrointestinal-involvement-in-type-1-gaucher-disease-comparison-of-eliglustat-tartrate-treatment-and-enzyme-replacement-therapy
#3
Yoo-Mi Kim, Dong Hoon Shin, Su Bum Park, Chong Kun Cheon, Han-Wook Yoo
BACKGROUND: Gastrointestinal involvement in Gaucher disease is very rare, and appears to be unresponsive to enzyme replacement therapy (ERT). CASE PRESENTATION: Here, we describe identical twin, splenectomized, non-neuronopathic Gaucher patients on long-term ERT for 9 years, who complained of epigastric discomfort due to Gaucher cell infiltration of the gastroduodenal mucosa. Rare compound heterozygous mutations (p.Arg48Trp and p.Arg257Gln) of the GBA gene were found in both...
May 15, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28499373/a-case-control-study-of-selenoprotein-genes-polymorphisms-and-autoimmune-thyroid-diseases-in-a-chinese-population
#4
Ling Xiao, Jianghong Yuan, Qiuming Yao, Ni Yan, Ronghua Song, Wenjuan Jiang, Danfeng Li, Liangfeng Shi, Jin-An Zhang
BACKGROUND: Selenium is an essential trace and there is a high selenium concentration in the thyroid gland. Selenium deficiency may impair the thyroid function. The aim of this study was to investigate the association between three selenoprotein genes polymorphisms and autoimmune thyroid diseases. METHODS: We genotyped six single-nucleotide polymorphisms (SNPs), rs6865453 in selenoprotein P gene (SELENOP), rs713041 rs2074451 rs3746165 in glutathione peroxidase 4 gene (GPX4) and rs28665122 and rs7178239 in selenoprotein S gene (SELENOS) by MassARRAY system using the chip-based matrix-assisted laser desorption ionization time-of-flight mass spectrometry technology in 1060 patients with autoimmune thyroid diseases and 938 healthy controls...
May 12, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28499369/characterization-of-a-splice-site-mutation-in-the-tumor-suppressor-gene-flcn-associated-with-renal-cancer
#5
Malte P Bartram, Tripti Mishra, Nadine Reintjes, Francesca Fabretti, Hakam Gharbi, Alexander C Adam, Heike Göbel, Mareike Franke, Bernhard Schermer, Stefan Haneder, Thomas Benzing, Bodo B Beck, Roman-Ulrich Müller
BACKGROUND: Renal cell carcinoma is among the most prevalent malignancies. It is generally sporadic. However, genetic studies of rare familial forms have led to the identification of mutations in causative genes such as VHL and FLCN. Mutations in the FLCN gene are the cause of Birt-Hogg-Dubé syndrome, a rare tumor syndrome which is characterized by the combination of renal cell carcinoma, pneumothorax and skin tumors. METHODS: Using Sanger sequencing we identify a heterozygous splice-site mutation in FLCN in lymphocyte DNA of a patient suffering from renal cell carcinoma...
May 12, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28482824/novel-missense-mutation-in-the-bzip-transcription-factor-maf-associated-with-congenital-cataract-developmental-delay-seizures-and-hearing-loss-aym%C3%A3-gripp-syndrome
#6
Shari Javadiyan, Jamie E Craig, Shiwani Sharma, Karen M Lower, Theresa Casey, Eric Haan, Emmanuelle Souzeau, Kathryn P Burdon
BACKGROUND: Cataract is a major cause of severe visual impairment in childhood. The purpose of this study was to determine the genetic cause of syndromic congenital cataract in an Australian mother and son. METHOD: Fifty-one genes associated with congenital cataract were sequenced in the proband using a custom Ampliseq library on the Ion Torrent Personal Genome Machine (PGM). Reads were aligned against the human genome (hg19) and variants were annotated. Variants were prioritised for validation by Sanger sequencing if they were novel, rare or previously reported to be associated with paediatric cataract and were predicted to be protein changing...
May 8, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28472934/novel-npc1-mutations-with-different-segregation-in-two-related-greek-patients-with-niemann-pick-type-c-disease-molecular-study-in-the-extended-pedigree-and-clinical-correlations
#7
Evangelia Bountouvi, Anna Papadopoulou, Marie T Vanier, Georgia Nyktari, Spyridon Kanellakis, Helen Michelakakis, Argyrios Dinopoulos
BACKGROUND: Niemann-Pick type C disease (NPC) is an autosomal recessive, neurovisceral, lysosomal storage disorder with protean and progressive clinical manifestations, resulting from mutations in either of the two genes, NPC1 (~95% of families) and NPC2. Contrary to other populations, published evidence regarding NPC disease in Greece is sparse. METHODS: The study population consisted of two Greek NPC patients and their extended pedigree. Patients' clinical, biochemical, molecular profiles and the possible correlations are presented...
May 4, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28468610/a-case-report-of-novel-mutation-in-prf1-gene-which-causes-familial-autosomal-recessive-hemophagocytic-lymphohistiocytosis
#8
Mohammad Reza Bordbar, Farzaneh Modarresi, Mohammad Ali Farazi Fard, Hassan Dastsooz, Nader Shakib Azad, Mohammad Ali Faghihi
BACKGROUND: Hemophagocytic Lymphohistiocytosis (HLH) is a life-threatening immunodeficiency and multi-organ disease that affects people of all ages and ethnic groups. Common symptoms and signs of this disease are high fever, hepatosplenomegaly, and cytopenias. Familial form of HLH disease, which is an autosomal recessive hematological disorder is due to disease-causing mutations in several genes essential for NK and T-cell granule-mediated cytotoxic function. For an effective cytotoxic response from cytotoxic T lymphocyte or NK cell encountering an infected cell or tumor cell, different processes are required, including trafficking, docking, priming, membrane fusion, and entry of cytotoxic granules into the target cell leading to apoptosis...
May 3, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28468609/a-novel-trps1-mutation-in-a-moroccan-family-with-tricho-rhino-phalangeal-syndrome-type-iii-case-report
#9
W Smaili, S Chafai Elalaoui, S Meier, M Zerkaoui, A Sefiani, K Heinimann
BACKGROUND: Tricho-rhino-phalangeal syndrome (TRPS) is an autosomal dominant disorder characterized by craniofacial and skeletal malformations including short stature, thin scalp hair, sparse lateral eyebrows, pear-shaped nose and cone shaped epiphyses. This condition is caused by haploinsufficiency of the TRPS1 gene. Previous genotype-phenotype studies have correlated exon 6 missense mutations with TRPS type III, a severe form of type I with pronounced, facial characteristics, short stature and brachydactyly and differing from type II by the absence of exostoses and mental retardation...
May 3, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28464932/interaction-between-fto-rs9939609-and-the-native-american-origin-abca1-rs9282541-affects-bmi-in-the-admixed-mexican-population
#10
Marisela Villalobos-Comparán, Bárbara Antuna-Puente, María Teresa Villarreal-Molina, Samuel Canizales-Quinteros, Rafael Velázquez-Cruz, Paola León-Mimila, Hugo Villamil-Ramírez, Juan Antonio González-Barrios, José Luis Merino-García, María Rocío Thompson-Bonilla, Diego Jarquin, Osvaldo Erik Sánchez-Hernández, Martha Eunice Rodríguez-Arellano, Carlos Posadas-Romero, Gilberto Vargas-Alarcón, Francisco Campos-Pérez, Manuel Quiterio, Jorge Salmerón-Castro, Alessandra Carnevale, Sandra Romero-Hidalgo
BACKGROUND: The aim of this study was to explore whether interactions between FTO rs9939609 and ABCA1 rs9282541 affect BMI and waist circumference (WC), and could explain previously reported population differences in FTO-obesity and FTO-BMI associations in the Mexican and European populations. METHODS: A total of 3938 adults and 636 school-aged children from Central Mexico were genotyped for both polymorphisms. Subcutaneous and visceral adipose tissue biopsies from 22 class III obesity patients were analyzed for FTO and ABCA1 mRNA expression...
May 2, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28464862/severe-congenital-microcephaly-with-ap4m1-mutation-a-case-report
#11
Sarah Duerinckx, Helene Verhelst, Camille Perazzolo, Philippe David, Laurence Desmyter, Isabelle Pirson, Marc Abramowicz
BACKGROUND: Autosomal recessive defects of either the B1, E1, M1 or S1 subunit of the Adaptor Protein complex-4 (AP4) are characterized by developmental delay, severe intellectual disability, spasticity, and occasionally mild to moderate microcephaly of essentially postnatal onset. CASE PRESENTATION: We report on a patient with severe microcephaly of prenatal onset, and progressive spasticity, developmental delay, and severe intellectual deficiency. Exome sequencing showed a homozygous mutation in AP4M1, causing the replacement of an arginine by a stop codon at position 338 of the protein (p...
May 2, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28464846/sequence-variations-of-the-egr4-gene-in-korean-men-with-spermatogenesis-impairment
#12
Se Ra Sung, Seung Hun Song, Kyung Min Kang, Ji Eun Park, Yeo Jung Nam, Yun-Jeong Shin, Dong Hyun Cha, Ju Tae Seo, Tae Ki Yoon, Sung Han Shim
BACKGROUND: Egr4 is expressed in primary and secondary spermatocytes in adult mouse testes and has a crucial role in regulating germ cell maturation. The functional loss of Egr4 blocks spermatogenesis, significantly reducing the number of spermatozoa that are produced. In this study, we examined whether EGR4 variants are present in Korean men with impaired spermatogenesis. METHODS: A total 170 Korean men with impaired spermatogenesis and 272 normal controls were screened...
May 2, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28449647/pear1-is-not-a-major-susceptibility-gene-for-cardiovascular-disease-in-a-flemish-population
#13
Wen-Yi Yang, Thibault Petit, Nicholas Cauwenberghs, Zhen-Yu Zhang, Chang-Sheng Sheng, Lutgarde Thijs, Erika Salvi, Benedetta Izzi, Christophe Vandenbriele, Fang-Fei Wei, Yu-Mei Gu, Lotte Jacobs, Lorena Citterio, Simona Delli Carpini, Cristina Barlassina, Daniele Cusi, Marc F Hoylaerts, Peter Verhamme, Tatiana Kuznetsova, Jan A Staessen
BACKGROUND: Platelet Endothelial Aggregation Receptor 1 (PEAR1), a membrane protein highly expressed in platelets and endothelial cells, plays a role in platelet contact-induced activation, sustained platelet aggregation and endothelial function. Previous reports implicate PEAR1 rs12041331 as a variant influencing risk in patients with coronary heart disease. We investigated whether genetic variation in PEAR1 predicts cardiovascular outcome in a white population. METHODS: In 1938 participants enrolled in the Flemish Study on Environment, Genes and Health Outcomes (51...
April 27, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28446136/first-mutation-in-the-fshr-cytoplasmic-tail-identified-in-a-non-pregnant-woman-with-spontaneous-ovarian-hyperstimulation-syndrome
#14
Justine Hugon-Rodin, Charlotte Sonigo, Anne Gompel, Catherine Dodé, Michael Grynberg, Nadine Binart, Isabelle Beau
BACKGROUND: Spontaneous ovarian hyperstimulation syndrome (sOHSS) is a rare event occurring mostly during natural pregnancy. Among described etiologies, some activating mutations of FSH receptor (FSHR) have been identified. CASE PRESENTATION: We report hereby the case of a non-pregnant women with three episodes of sOHSS. Hormonal evaluation was normal and no pituitary adenoma was detected. However, genetic analysis identified a novel heterozygous FSHR mutation (c...
April 26, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28427360/association-of-novel-polymorphisms-in-tmem39a-gene-with-systemic-lupus-erythematosus-in-a-chinese-han-population
#15
Xinze Cai, Wenyue Huang, Xudong Liu, Lining Wang, Yi Jiang
BACKGROUND: This study aimed to assess the association between 14 single nucleotide polymorphisms (SNPs) in six genes (IRF8, TMEM39A, IKZF3, ORMDL3, GSDMB, and ZPBP2) and systemic lupus erythematosus (SLE) in a Chinese Han population sample. METHODS: We carried out a case-control study of 415 patients with SLE and 470 healthy controls without autoimmune disease or cancer. DNA for genetic analysis was isolated from the blood of all subjects using standard phenol-chloroform method...
April 20, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28403827/a-novel-mutation-in-homeobox-dna-binding-domain-of-hoxc13-gene-underlies-pure-hair-and-nail-ectodermal-dysplasia-ectd9-in-a-pakistani-family
#16
Anwar Kamal Khan, Noor Muhammad, Abdul Aziz, Sher Alam Khan, Khadim Shah, Abdul Nasir, Muzammil Ahmad Khan, Saadullah Khan
BACKGROUND: Pure hair and nail ectodermal dysplasia (PHNED) is a congenital disorder of hair abnormalities and nail dysplasia. Both autosomal recessive and dominant inheritance fashion of PHNED occurs. In literature, to date, five different forms of PHNED have been reported at molecular level, having three genes known and two loci with no gene yet. METHODS: In this study, a four generations consanguineous family of Pakistani origin with autosomal recessive PHNED was investigated...
April 12, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28399814/sirt6-polymorphism-rs117385980-is-associated-with-longevity-and-healthy-aging-in-finnish-men
#17
Katariina Hirvonen, Hannele Laivuori, Jari Lahti, Timo Strandberg, Johan G Eriksson, Peter Hackman
BACKGROUND: Sirtuin-6 (SIRT6) is involved in various crucial cellular pathways, being a key regulator of telomere structure, DNA repair, metabolism, transcriptional control and the NF-kappa B pathway. Sirt6 knock-out mice have been reported to develop typical features of aging and senescence at the age of 2-3 weeks and die within 4 weeks. The aim of this study was to investigate whether sequence variations of SIRT6 are associated with aging and longevity in Finnish men. METHODS: The sample of this study consisted of 43 longer-living and healthy males and 92 male control subjects who have died of natural causes at an average age of 66,6 (±4,1) years and who belonged to the Helsinki Birth Cohort Study (HBCS)...
April 11, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28381238/homozygous-germ-line-mutation-of-the-pms2-mismatch-repair-gene-a-unique-case-report-of-constitutional-mismatch-repair-deficiency-cmmrd
#18
N C Ramchander, N A J Ryan, E J Crosbie, D G Evans
BACKGROUND: Constitutional mismatch repair deficiency syndrome results from bi-allelic inheritance of mutations affecting the key DNA mismatch repair genes: MLH1, MSH2, MSH6 or PMS2. Individuals with bi-allelic mutations have a dysfunctional mismatch repair system from birth; as a result, constitutional mismatch repair deficiency syndrome is characterised by early onset malignancies. Fewer than 150 cases have been reported in the literature over the past 20 years. This is the first report of the founder PMS2 mutation - NM_000535...
April 5, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28376813/clinical-relevance-of-breast-and-gastric-cancer-associated-polymorphisms-as-potential-susceptibility-markers-for-oral-clefts-in-the-brazilian-population
#19
Renato Assis Machado, Edimilson Martins de Freitas, Sibele Nascimento de Aquino, Daniella Reis B Martelli, Mário Sérgio Oliveira Swerts, Silvia Regina de Almeida Reis, Darlene Camati Persuhn, Helenara Salvati Bertolossi Moreira, Verônica Oliveira Dias, Ricardo D Coletta, Hercílio Martelli-Júnior
BACKGROUND: Epidemiological studies have indicated a higher incidence of breast and gastric cancer in patients with nonsyndromic cleft lip with or without cleft palate (NSCL ± P) and their relatives, which can be based on similar genetic triggers segregated within family with NSCL ± P. METHODS: This multicenter study evaluated the association of 9 single nucleotide polymorphisms (SNP) in AXIN2 and CDH1, representing genes consistently altered in breast and gastric tumors, with NSCL ± P in 223 trios (father, mother and patient with NSCL ± P) by transmission disequilibrium test (TDT)...
April 4, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28351343/identification-of-large-genomic-rearrangement-of-brca1-2-in-high-risk-patients-in-korea
#20
Do-Hoon Kim, Hyojin Chae, Irene Jo, Jaeeun Yoo, Hyeyoung Lee, Woori Jang, Joonhong Park, Gun Dong Lee, Dong-Seok Jeon, Keun Ho Lee, Soo Young Hur, Byung Joo Chae, Byung Joo Song, Myungshin Kim, Yonggoo Kim
BACKGROUND: While the majority of germline inactivating mutations in BRCA1/2 are small-scale mutations, large genomic rearrangements (LGRs) are also detected in a variable proportion of patients. However, routine genetic methods are incapable of detecting LGRs, and comprehensive genetic testing algorithm is necessary. METHODS: We performed multiplex ligation-dependent probe amplification assay for small-scale mutation negative patients at high-risk for LGR, based on previously published LGR risk criteria...
March 28, 2017: BMC Medical Genetics
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