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https://www.readbyqxmd.com/read/28699202/ductal-adenocarcinoma-of-the-prostate-clinical-and-biological-profiles
#1
Armelle Vinceneux, Franck Bruyère, Olivier Haillot, Thomas Charles, Alexandre de la Taille, Laurent Salomon, Yves Allory, Idir Ouzaid, Laurence Choudat, Morgan Rouprêt, Eva Comperat, Nadine Houede, Jean-Baptiste Beauval, Patrick Vourc'h, Gaëlle Fromont
BACKGROUND: Ductal adenocarcinoma (DAC) is a rare and aggressive subtype of prostate cancer (PCa). In the present study, we analyzed the clinical and biological characteristics of DAC, in comparison with high grade conventional acinar PCa. METHODS: Samples and data were retrospectively collected from seven institutions and centrally reviewed. Immunohistochemistry was performed on tissue microarrays to assess the expression of candidate proteins, based on the molecular classification of PCa, including ERG, PTEN, and SPINK1...
July 12, 2017: Prostate
https://www.readbyqxmd.com/read/28694206/identification-of-two-novel-sh3pxd2b-gene-mutations-in-frank-ter-haar-syndrome-by-exome-sequencing-case-report-and-review-of-the-literature
#2
Abdelali Zrhidri, Imane Cherkaoui Jaouad, Jaber Lyahyai, Laure Raymond, Grégory Egéa, Mohamed Taoudi, Said E L Mouatassim, Abdelaziz Sefiani
BACKGROUND: Frank-Ter Haar syndrome (FTHS) is an autosomal-recessive disorder characterized by skeletal, cardio-vascular, and eye abnormalities, such as increased intraocular pressure, prominent eyes, and hypertelorism. The most common underlying genetic defect in Frank-Ter Haar syndrome appears to be due to mutations in the SH3PXD2B gene on chromosome 5q35.1. Until now, only six mutations in SH3PXD2B gene have been identified. A genetic heterogeneity of FTHS was suggested in previous studies...
July 7, 2017: Gene
https://www.readbyqxmd.com/read/28652772/epidermal-growth-factor-receptor-exon-20-mutation-in-lung-cancer-types-incidence-clinical-features-and-impact-on-treatment
#3
Vanita Noronha, Anuradha Choughule, Vijay M Patil, Amit Joshi, Rajiv Kumar, Deepa Susan Joy Philip, Shripad Banavali, Amit Dutt, Kumar Prabhash
BACKGROUND: There are limited data available on the treatment and outcome of epidermal growth factor receptor (EGFR) exon 20-mutated lung cancer patients. Hence, we planned an analysis of the demographic details, clinical profile and survival of lung cancer patients with exon 20 mutations. We compared our results to patients with EGFR tyrosine kinase inhibitor (TKI)-sensitizing activating and EGFR/anaplastic lymphoma kinase (ALK)-negative mutations. METHODS: This was a retrospective analysis of lung cancer patients who were treated at our center between January 2010 and August 2014...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28630369/alpk3-gene-mutation-in-a-patient-with-congenital-cardiomyopathy-and-dysmorphic-features
#4
Ahmet Okay Cağlayan, Rabia Gonul Sezer, Hande Kaymakcalan, Ege Ulgen, Taner Yavuz, Jacob F Baranoski, Abdulkadir Bozaykut, Akdes Serin Harmanci, Yalim Yalcin, Mark W Youngblood, Katsuhito Yasuno, Kaya Bilguvar, Murat Gunel
Primary cardiomyopathy is one of the most common inherited cardiac diseases and harbors significant phenotypic and genetic heterogeneity. Because of this, genetic testing has become standard in treatment of this disease group. Indeed, in recent years, next-generation DNA sequencing has found broad applications in medicine, both as a routine diagnostic tool for genetic disorders and also as a high-throughput discovery tool for identifying novel disease causing genes. We describe a male infant with primary dilated cardiomyopathy that was diagnosed using intrauterine echocardiography, and found to progress to hypertrophic cardiomyopathy after birth...
June 19, 2017: Cold Spring Harbor Molecular Case Studies
https://www.readbyqxmd.com/read/28623566/clinical-and-molecular-genetic-features-of-cerebrotendinous-xanthomatosis-patients-in-chinese-families
#5
Chen Chen, Yue Zhang, Hui Wu, Yi-Min Sun, Ye-Hua Cai, Jian-Jun Wu, Jian Wang, Ling-Yun Gong, Zheng-Tong Ding
Cerebrotendinous xanthomatosis (CTX) is a lipid-storage disease caused by mutations in CYP27A1. Current publications of Chinese CTX were mainly based on case reports. Here we investigated the clinical manifestations, genetic features in Chinese CTX patients. The clinical materials of 4 Chinese CTX pedigrees were collected. The genetic testing was done by polymerase chain reaction plus Sanger sequencing. The features of Chinese CTX patients reported previously were also reviewed. Three novel mutations of p.Arg513Cys, c...
June 17, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28618409/identification-of-8-novel-mutations-in-nephrogenesis-related-genes-in-chinese-han-patients-with-unilateral-renal-agenesis
#6
Hangdi Wu, Qian Xu, Jingyuan Xie, Jun Ma, Panpan Qiao, Wen Zhang, Haijin Yu, Weiming Wang, Ying Qian, Qianying Zhang, Yiqing Guo, Yonghua Tang, Xiao-Nong Chen, Zhaohui Wang, Nan Chen
BACKGROUND: Few genetic studies have focused on unilateral renal agenesis (URA), which is a disorder with insidious clinical manifestations and a tendency to result in renal failure. We aimed to detect pathogenic mutations in nephrogenesis-related genes, which were identified by a literature review conducted among a large cohort of Chinese Han patients with URA. METHODS: Totally, 86 unrelated URA patients were included. All URA patients were diagnosed by employing radiological methods...
2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/28604951/-analysis-of-foxl2-gene-mutations-in-5-families-affected-with-blepharophimosis-ptosis-and-epicanthus-inversus-syndrome
#7
Xiaowen Yang, Wen Li, Juan Du, Shimin Yuan, Wenbin He, Qianjun Zhang, Changgao Zhong, Guangxiu Lu, Yueqiu Tan
OBJECTIVE: To screen for FOXL2 gene mutations in 6 patients with blepharophimosis, ptosis, and epicanthus inversus syndrome (BPES), and explore their genotype-phenotype correlation. METHODS: Peripheral venous blood samples were collected from the patients for the extraction of genomic DNA. PCR and Sanger sequencing were employed to analyze the coding region and flanking sequences of the FOXL2 gene. Pathogenicity of the identified mutations was verified through literature review and bioinformatic analysis...
June 10, 2017: Zhonghua Yi Xue Yi Chuan Xue za Zhi, Zhonghua Yixue Yichuanxue Zazhi, Chinese Journal of Medical Genetics
https://www.readbyqxmd.com/read/28595730/recurrent-large-genomic-rearrangements-in-brca1-and-brca2-in-an-irish-case-series
#8
Terri P McVeigh, Nuala Cody, Cliona Carroll, Marie Duff, Michael Farrell, Lisa Bradley, David Gallagher, Trudi McDevitt, Andrew J Green
Mutations in BRCA1 and BRCA2 confer a highly increased risk of cancers, mainly of the breast and ovary. Most variants are point mutations or small insertions/deletions detectable by Sanger sequencing. Large genomic rearrangements, including deletions/duplications of multiple exons, are not routinely detectable by Sanger sequencing, but can be reliably identified by Multiplex Ligation-dependent Probe Amplification (MLPA), and account for 5-17% mutations in different populations. Comprehensive mutation testing using these two methods has been facilitated via our centre since 2005...
August 2017: Cancer Genetics
https://www.readbyqxmd.com/read/28587904/evaluation-of-a-novel-line-probe-assay-to-detect-resistance-to-pyrazinamide-a-key-drug-used-for-tuberculosis-treatment
#9
Michèle Driesen, Yuji Kondo, Bouke C de Jong, Gabriela Torrea, Sylvie Asnong, Christel Desmaretz, Kamal S M Mostofa, Sabira Tahseen, Michael G Whitfield, Daniela M Cirillo, Paolo Miotto, Andrea M Cabibbe, Leen Rigouts
OBJECTIVES: The development of rapid molecular diagnostic assays for pyrazinamide (PZA) resistance is considered technically challenging as mutations are highly diverse, scattered along the full length of the pncA gene, and not all are associated with PZA resistance. In this study, we evaluated the performance of the novel Genoscholar PZA-TB II line-probe assay (NIPRO Corporation, Japan; 'PZA-LPA2'). METHODS: To evaluate the applicability of the PZA-LPA2 in clinical settings, we compared the performance of the PZA-LPA2 to a composite reference standard pncA Sanger and Illumina sequencing plus phenotypic susceptibility testing on a panel of 87 Mycobacterium tuberculosis isolates from WHO drug resistance surveys, harbouring mutations previously classified as associated or not associated with resistance according to data from peer-reviewed literature...
June 3, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28584208/establishment-of-a-novel-method-for-screening-epidermal-growth-factor-receptor-tyrosine-kinase-inhibitor-resistance-mutations-in-lung-cancer
#10
Hong-Xia Tian, Xu-Chao Zhang, Zhen Wang, Jin-Ji Yang, Wei-Bang Guo, Zhi-Hong Chen, Yi-Long Wu
BACKGROUND: Drug resistance to targeted therapies occurs in lung cancer, and resistance mechanisms related to epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs) are continuously being discovered. We aimed to establish a novel method for highly parallel multiplexed detection of genetic mutations related to EGFR TKI-resistant lung cancer using Agena iPLEX chemistry and matrix-assisted laser desorption ionization time-of-flight analysis on the MassARRAY mass spectrometry platform...
June 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28583442/evolution-of-selective-sequencing-approaches-for-virus-discovery-and-virome-analysis
#11
REVIEW
Arvind Kumar, Satyapramod Murthy, Amit Kapoor
Recent advances in sequencing technologies have transformed the field of virus discovery and virome analysis. Once, mostly confined to the traditional Sanger sequencing based individual virus discovery, is now entirely replaced by high throughput sequencing (HTS) based virus metagenomics that can be used to characterize the nature and composition of entire viromes. To better harness the potential of HTS for study of viromes, sample preparation methodologies used different refinements to exclude amplification of non-viral components that can overshadow low-titer viruses...
June 2, 2017: Virus Research
https://www.readbyqxmd.com/read/28577957/egfr-t790m-mutation-testing-within-the-osimertinib-aura-phase-i-study
#12
Simon Dearden, Helen Brown, Suzanne Jenkins, Kenneth S Thress, Mireille Cantarini, Rebecca Cole, Malcolm Ranson, Pasi A Jänne
OBJECTIVES: Reliable epidermal growth factor receptor (EGFR) mutation testing techniques are required to identify eligible patients with EGFR mutation/T790M positive advanced non-small cell lung cancer (NSCLC), for treatment with osimertinib (AZD9291), an oral, potent, irreversible EGFR tyrosine kinase inhibitor (TKI) selective for EGFR-TKI-sensitizing and T790M resistance mutations over wild-type EGFR. There is no current consensus regarding the best method to detect EGFR T790M mutations...
July 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/28575112/molecular-epidemiology-of-staphylococcus-aureus-bacteremia-in-a-single-large-minnesota-medical-center-in-2015-as-assessed-using-mlst-core-genome-mlst-and-spa-typing
#13
Kyung-Hwa Park, Kerryl E Greenwood-Quaintance, James R Uhl, Scott A Cunningham, Nicholas Chia, Patricio R Jeraldo, Priya Sampathkumar, Heidi Nelson, Robin Patel
Staphylococcus aureus is a leading cause of bacteremia in hospitalized patients. Whether or not S. aureus bacteremia (SAB) is associated with clonality, implicating potential nosocomial transmission, has not, however, been investigated. Herein, we examined the epidemiology of SAB using whole genome sequencing (WGS). 152 SAB isolates collected over the course of 2015 at a single large Minnesota medical center were studied. Staphylococcus protein A (spa) typing was performed by PCR/Sanger sequencing; multilocus sequence typing (MLST) and core genome MLST (cgMLST) were determined by WGS...
2017: PloS One
https://www.readbyqxmd.com/read/28557526/molecular-profiling-of-malignant-pleural-effusion-in-metastatic-non-small-cell-lung-carcinoma-the-effect-of-preanalytical-factors
#14
Jamal Carter, James Adam Miller, David Feller-Kopman, David Ettinger, David Sidransky, Zahra Maleki
RATIONALE: Non-small-cell lung cancer (NSCLC)-associated malignant pleural effusions (MPEs) are sometimes the only available specimens for molecular analysis. OBJECTIVES: This study evaluates diagnostic yield of NSCLC-associated MPE, its adequacy for molecular profiling and the potential influence of MPE volume/cellularity on the analytic sensitivity of our assays. METHODS: Molecular results of 50 NSCLC-associated MPE cases during a 5-year period were evaluated...
July 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28514307/exome-sequencing-identifies-a-de-novo-mutation-of-ctnnb1-gene-in-a-patient-mainly-presented-with-retinal-detachment-lens-and-vitreous-opacities-microcephaly-and-developmental-delay-case-report-and-literature-review
#15
REVIEW
Niu Li, Yufei Xu, Guoqiang Li, Tingting Yu, Ru-En Yao, Xiumin Wang, Jian Wang
RATIONALE: The CTNNB1 (β-catenin) gene is well known for its crucial role in cell adhesion and the Wnt-signaling pathway. Previous studies have shown that gain-of-function mutations in the CTNNB1 gene contribute to the occurrence and development of a variety of carcinomas in humans. Recently, de novo, heterozygous, loss-of-function mutations of the CTNNB1 gene were found that partially explain intellectual disability in some patients. Other major clinical symptoms in these patients included microcephaly, abnormal facial features, motor delays, speech impairments, and deformities of the hands and feet...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28502730/overgrowth-syndromes-caused-by-somatic-variants-in-the-phosphatidylinositol-3-kinase-akt-mammalian-target-of-rapamycin-pathway
#16
REVIEW
Gozde Akgumus, Fengqi Chang, Marilyn M Li
Somatic variants have been well described in tumorigenesis; however, they are only recently appreciated in other human disorders, such as mosaic overgrowth syndromes. Although overgrowth is a manifestation in many genetic syndromes, not all overgrowth syndromes are inherited. Mosaic somatic variants have been lately described in several overgrowth disorders, such as Proteus syndrome, CLOVES (congenital, lipomatous, overgrowth, vascular malformations, epidermal nevi, and spinal/skeletal anomalies and/or scoliosis) syndrome, megalencephaly-polymicrogyria-polydactyly-hydrocephalus syndrome, and megalencephaly-capillary malformation-polymicrogyria syndrome...
May 11, 2017: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/28483234/identification-of-a-novel-missence-mutation-in-fgfr3-gene-in-an-iranian-family-with-ladd-syndrome-by-next-generation-sequencing
#17
REVIEW
Farah Talebi, Farideh Ghanbari Mardasi, Javad Mohammadi Asl, Amir Hooshang Bavarsad, Saeed Tizno
Lacrimo-auriculo-dento-digital syndrome (LADD) is a multiple congenital anomaly and a genetically heterogeneous disorder. The aim of this study was to identify the pathogenic gene in an Iranian family with LADD syndrome and review the literature on reported mutations that involved in pathogenesis of LADD syndrome. One novel variant, c.1882 G > A, in fibroblast growth factor receptor 3 (FGFR3) was identified by next generation sequencing and Sanger sequencing. The heterozygous FGFR3 c.1882 G > A variant results in substitution of aspartic acid with asparagine at amino acid 628 (p...
June 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28482761/lack-of-association-between-adrenoreceptor-genotype-and-the-vasoconstriction-response-to-dexmedetomidine
#18
Robert H Friesen, Dobromir Slavov, Shelley D Miyamoto, R J Ing, Wells B LaRiviere, Matthew R G Taylor
An exaggerated vasoconstriction response to dexmedetomidine, an α-2 adrenergic agonist, has been associated with 2 genotypes: a deletion in the α-2B adrenoreceptor gene ( ADRA2B deletion) and SNP rs9922316 in the gene for protein kinase C type β ( PRKCB). We hypothesized that children with a marked systemic vascular resistance index (SVRI) increase following intravenous dexmedetomidine bolus would carry these genotypes. Following institutional review board approval, DNA samples from 16 children with transplanted hearts who participated in a study in the cardiac catheterization laboratory of hemodynamic responses to dexmedetomidine boluses underwent genotyping by polymerase chain reaction (PCR) amplification and PCR Sanger sequencing for the ADRA2B deletion and for PRKCB rs9922316...
May 1, 2017: Seminars in Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28469099/clinical-and-genetic-features-of-chinese-x-linked-charcot-marie-tooth-type-1-disease
#19
Yuan-Yuan Lu, He Lyu, Su-Qin Jin, Yue-Huan Zuo, Jing Liu, Zhao-Xia Wang, Wei Zhang, Yun Yuan
BACKGROUND: X-linked Charcot-Marie-Tooth type 1 (CMT1X) disease is one of the most common forms of inherited neuropathy caused by mutations in the gap junction beta-1 protein (GJB1) gene (also known as connexin 32). This study presented the clinical and genetic features of a series of Chinese patients with GJB1 gene mutations. METHODS: A total of 22 patients from unrelated families, who were referred to Department of Neurology, Peking University First Hospital from January 2005 to January 2016, were identified with GJB1 mutations...
May 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28462386/association-of-variants-of-arginine-vasopressin-and-arginine%C3%A2-vasopressin-receptor-1a-with-severe-acetaminophen%C3%A2-liver-injury
#20
Matthew Randesi, Orna Levran, Joel Correa da Rosa, Julia Hankins, Jody Rule, Mary Jeanne Kreek, William M Lee
BACKGROUND & AIMS: Acetaminophen-related acute liver injury and liver failure (ALF) result from ingestion of supratherapeutic quantities of this analgesic, frequently in association with other forms of substance abuse including alcohol, opioids, and cocaine. Thus, overdosing represents a unique high-risk behavior associated with other forms of drug use disorder. METHODS: We examined a series of 21 single nucleotide polymorphisms (SNPs) in 9 genes related to impulsivity and/or stress responsivity that may modify response to stress...
May 2017: Cellular and Molecular Gastroenterology and Hepatology
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