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Clinical molecular genetics

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https://www.readbyqxmd.com/read/28646744/systematic-biobanking-novel-imaging-techniques-and-advanced-molecular-analysis-for-precise-tumor-diagnosis-and-therapy-the-polish-mobit-project
#1
Jacek Niklinski, Adam Kretowski, Marcin Moniuszko, Joanna Reszec, Anna Michalska-Falkowska, Magdalena Niemira, Michal Ciborowski, Radoslaw Charkiewicz, Dorota Jurgilewicz, Miroslaw Kozlowski, Rodryg Ramlau, Cezary Piwkowski, Miroslaw Kwasniewski, Monika Kaczmarek, Andrzej Ciereszko, Tomasz Wasniewski, Robert Mroz, Wojciech Naumnik, Ewa Sierko, Magdalena Paczkowska, Joanna Kisluk, Anetta Sulewska, Adam Cybulski, Zenon Mariak, Boguslaw Kedra, Jacek Szamatowicz, Paweł Kurzawa, Lukasz Minarowski, Angelika Edyta Charkiewicz, Barbara Mroczko, Jolanta Malyszko, Christian Manegold, Lothar Pilz, Heike Allgayer, Mohammed L Abba, Hartmut Juhl, Frauke Koch
Personalized and precision medicine is gaining recognition due to the limitations by standard diagnosis and treatment; many areas of medicine, from cancer to psychiatry, are moving towards tailored and individualized treatment for patients based on their clinical characteristics and genetic signatures as well as novel imaging techniques. Advances in whole genome sequencing have led to identification of genes involved in a variety of diseases. Moreover, biomarkers indicating severity of disease or susceptibility to treatment are increasingly being characterized...
June 21, 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/28646406/podocytes-and-the-quest-for-precision-medicines-for-kidney-diseases
#2
REVIEW
Peter Mundel
In this review, I describe a 30-year journey in the quest for precision medicines for patients with kidney diseases. In 1987, when I started my reseach career, most scientists studying glomerular disease biology were focused on mesangial cells. The crucial role of the podocyte in many kidney diseases characterized by proteinuria, including focal segmental glomerulosclerosis (FSGS) and diabetic nephropathy, had not yet been recognized. We were not aware of genetic causes or drivers of kidney diseases nor of molecular markers and cell culture systems for mechanistic studies of podocyte biology...
June 23, 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/28645642/ngs-and-blood-group-systems-state-of-the-art-and-perspectives
#3
Y Fichou, C Férec
Molecular analysis, or genotyping, of genes involved in the expression of blood group antigens has been a standard strategy used in immunohaematology laboratories routinely. For the past ten years, next-generation sequencing (NGS), or second-generation sequencing, has become the reference method in genetics. Extensive study of distinct targets, large genomic regions, and even whole genome is henceforth possible by this approach at minimal cost. Blood group genotyping has thus taken advantage of this technological advent...
June 20, 2017: Transfusion Clinique et Biologique: Journal de la Société Française de Transfusion Sanguine
https://www.readbyqxmd.com/read/28644570/clinical-and-genetic-analysis-of-patients-with-cherubism
#4
R A Machado, H A R Pontes, F R Pires, H M Silveira, A Bufalino, R Carlos, F M Tuji, D B M Alves, A R Santos-Silva, M A Lopes, H M Capistrano, R D Coletta, F P Fonseca
OBJECTIVE: To describe the clinical and genetic features of patients with cherubism. MATERIAL AND METHODS: A descriptive analysis of 14 cases from 9 different families was carried out. Clinicopathological, imaging and follow-up data were retrieved from patients' medical files and correlated with the genetic profile of each patient. Genomic DNA isolated from buccal mucosa cells was subjected to direct sequencing analysis of the SH3BP2 gene. RESULTS: Females were more affected than males (8:6), and the mean age at diagnosis was 8...
June 23, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28644547/a-genetic-epidemiology-study-of-congenital-adrenal-hyperplasia-in-italy
#5
Alessandro Gialluisi, Soara Menabò, Lilia Baldazzi, Letizia Casula, Antonella Meloni, Maria Carla Farci, Stefano Mariotti, Luisa Balestrino, Rita Ortolano, Stefania Murru, Carlo Carcassi, Sandro Loche, Antonio Balsamo, Giovanni Romeo
Congenital Adrenal Hyperplasia due to 21-hydroxylase deficiency (21OHD-CAH) is an autosomal recessive disorder affecting steroidogenesis, due to mutations in CYP21A2 (6p21.3). 21OHD-CAH neonatal screening is based on 17-hydroxyprogesterone (17OHP) serum levels, showing high type I error rate and low sensitivity to mild CAH forms. Here, we used an epidemiological approach, which estimates the allelic frequency (q) of an autosomal recessive disorder using the proportion of homozygous patients, the mutational spectrum and the inbreeding coefficient in a sample of affected individuals...
June 23, 2017: Clinical Genetics
https://www.readbyqxmd.com/read/28644430/the-clinical-landscape-for-sma-in-a-new-therapeutic-era
#6
REVIEW
K Talbot, E F Tizzano
Despite significant advances in basic research, the treatment of degenerative diseases of the nervous system remains one of the greatest challenges for translational medicine. The childhood onset motor neuron disorder spinal muscular atrophy (SMA) has been viewed as one of the more tractable targets for molecular therapy, due to a detailed understanding of the molecular genetic basis of the disease. In SMA, inactivating mutations in the SMN1 gene can be partially compensated for by limited expression of SMN protein from a variable number of copies of the SMN2 gene, which provides both a molecular explanation for phenotypic severity and a target for therapy...
June 23, 2017: Gene Therapy
https://www.readbyqxmd.com/read/28643992/recent-perspectives-of-molecular-aberrations-in-pediatric-high-grade-glioma
#7
Zhengwei Li, Qingzeng Sun, Yingchun Shi
Paediatric high-grade glioma (HGG), including diffuse intrinsic pontine glioma (DIPG) are highly aggressive tumours with no effective cures. Lack of understanding of the molecular biology of these tumours, in part due to lack of well-characterized pre-clinical models, is a great challenge in the development of novel therapies. Recent studies have shown that paediatric HGG short-term cell cultures retain many of the tumour characteristics in vivo and at present one of the best choices for in-vivo experimental studies...
June 22, 2017: Minerva Pediatrica
https://www.readbyqxmd.com/read/28643795/the-genomic-landscape-of-tuberous-sclerosis-complex
#8
Katie R Martin, Wanding Zhou, Megan J Bowman, Juliann Shih, Kit Sing Au, Kristin E Dittenhafer-Reed, Kellie A Sisson, Julie Koeman, Daniel J Weisenberger, Sandra L Cottingham, Steven T DeRoos, Orrin Devinsky, Mary E Winn, Andrew D Cherniack, Hui Shen, Hope Northrup, Darcy A Krueger, Jeffrey P MacKeigan
Tuberous sclerosis complex (TSC) is a rare genetic disease causing multisystem growth of benign tumours and other hamartomatous lesions, which leads to diverse and debilitating clinical symptoms. Patients are born with TSC1 or TSC2 mutations, and somatic inactivation of wild-type alleles drives MTOR activation; however, second hits to TSC1/TSC2 are not always observed. Here, we present the genomic landscape of TSC hamartomas. We determine that TSC lesions contain a low somatic mutational burden relative to carcinomas, a subset feature large-scale chromosomal aberrations, and highly conserved molecular signatures for each type exist...
June 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28643218/empagliflozin-improves-left-ventricular-diastolic-dysfunction-in-a-genetic-model-of-type-2-diabetes
#9
Nadjib Hammoudi, Dongtak Jeong, Rajvir Singh, Ahmed Farhat, Michel Komajda, Eric Mayoux, Roger Hajjar, Djamel Lebeche
PURPOSE: Cardiovascular (CV) diseases in type 2 diabetes (T2DM) represent an enormous burden with high mortality and morbidity. Sodium-glucose cotransporter 2 (SGLT2) inhibitors have recently emerged as a new antidiabetic class that improves glucose control, as well as body weight and blood pressure with no increased risk of hypoglycemia. The first CV outcome study terminated with empagliflozin, a specific SGLT2 inhibitor, has shown a reduction in CV mortality and in heart failure hospitalization, suggesting a beneficial impact on cardiac function which remains to be demonstrated...
June 22, 2017: Cardiovascular Drugs and Therapy
https://www.readbyqxmd.com/read/28642997/pd-1-and-cancer-molecular-mechanisms-and-polymorphisms
#10
REVIEW
Arash Salmaninejad, Vahid Khoramshahi, Alireza Azani, Ehsan Soltaninejad, Saeed Aslani, Mohammad Reza Zamani, Masoud Zal, Abolfazl Nesaei, Sayed Mostafa Hosseini
The programmed cell death protein 1 (PD-1) is expressed by activated T cells that act as an immunoregulatory molecule, and are responsible for the negative regulation of T cell activation and peripheral tolerance. The PD-1 gene also encodes an inhibitory cell surface receptor involved in the regulation of T cell functions during immune responses/tolerance. Beyond potent inhibitory effects on T cells, PD-1 also has a role in regulating B cell and monocyte responses. An overexpression of PD-1 has been reported to contribute to immune system avoidance in different cancers...
June 22, 2017: Immunogenetics
https://www.readbyqxmd.com/read/28642604/turning-the-tide-in-myelodysplastic-myeloproliferative-neoplasms
#11
REVIEW
Michael W N Deininger, Jeffrey W Tyner, Eric Solary
Myelodysplastic syndromes/myeloproliferative neoplasms (MDS/MPN) are aggressive myeloid malignancies recognized as a distinct category owing to their unique combination of dysplastic and proliferative features. Although current classification schemes still emphasize morphology and exclusionary criteria, disease-defining somatic mutations and/or germline predisposition alleles are increasingly incorporated into diagnostic algorithms. The developing picture suggests that phenotypes are driven mostly by epigenetic mechanisms that reflect a complex interplay between genotype, physiological processes such as ageing and interactions between malignant haematopoietic cells and the stromal microenvironment of the bone marrow...
June 23, 2017: Nature Reviews. Cancer
https://www.readbyqxmd.com/read/28642592/integrative-network-analysis-identifies-novel-drivers-of-pathogenesis-and-progression-in-newly-diagnosed-multiple-myeloma
#12
A Laganà, D Perumal, D Melnekoff, B Readhead, B A Kidd, V Leshchenko, P-Y Kuo, J Keats, M DeRome, J Yesil, D Auclair, S Lonial, A Chari, H J Cho, B Barlogie, S Jagannath, J T Dudley, S Parekh
Multiple Myeloma (MM) is an incurable malignancy of bone marrow plasma cells characterized by wide clinical and molecular heterogeneity. In this study we applied an integrative network biology approach to molecular and clinical data measured from 450 patients with newly diagnosed MM from the MMRF CoMMpass study. A novel network model of myeloma (MMNet) was constructed, revealing complex molecular disease patterns and novel associations between clinical traits and genomic markers. Genomic alterations and groups of co-expressed genes correlate with disease stage, tumor clonality, and early progression...
June 23, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28642172/egfr-t790m-ctdna-testing-platforms-and-their-role-as-companion-diagnostics-correlation-with-clinical-outcomes-to-egfr-tkis
#13
Zhiyong Liang, Ying Cheng, Yuan Chen, Yanping Hu, Wei-Ping Liu, You Lu, Jie Wang, Ye Wang, Gang Wu, Jian-Ming Ying, He-Long Zhang, Xu-Chao Zhang, Yi-Long Wu
Somatic mutation in the epidermal growth factor receptor (EGFR) predict clinical response to EGFR tyrosine kinase inhibitors in non-small cell lung cancer (NSCLC) and is a promising target for personalised medicine. EGFR mutations have prognostic value. Initially patients respond well to tyrosine kinase inhibitors but finally they would develop resistance and about 50% of this resistance can be attributed to the emergence of EGFR resistant mutation, T790M. This necessitates the need for genetic testing for clinical management of patients...
June 19, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28642100/jcl-roundtable-future-of-the-lipid-laboratory-using-the-laboratory-to-manage-the-patient-part-2
#14
REVIEW
William Virgil Brown, Yehuda Handelsman, Seth S Martin, Pamela B Morris
The measurement of cholesterol and triglycerides as indicators of metabolic disorders and most particularly of vascular disease risk has been of growing importance to physicians and epidemiologists over the past century. This was refocused on the lipoproteins, the specific packages in blood that carry these lipids, by John Gofman, MD, PhD, and Don Fredrickson, MD, more than 50 years ago. We continue to learn about the metabolism of these large molecular structures and their relationship to arteriosclerosis as new genetic and interventional studies are published...
May 25, 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28641540/metallothionein-is-a-potential-therapeutic-strategy-for-amyotrophic-lateral-sclerosis
#15
Shin-Ichi Ono
Lou Gehrig's disease, a synonym of amyotrophic lateral sclerosis, is an adult-onset lethal neurodegenerative disorder. Irrespective of extensive efforts to elucidate the pathogenesis of the disease and searches for therapies, no favorable pharmacotherapeutic strategies have yet to be proposed. In a popular rodent model of ALS, G93A SOD1 mice, intracellular copper conditions were geared toward copper accumulation inside cells, resulting in an acceleration of oxidative stress and apoptotic process. Disruption of intracellular copper homeostasis was common to transgenic mice expressing human mutant SOD1s...
June 22, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28641396/geneticization-in-mim-omim%C3%A2-exploring-historic-and-epistemic-drivers-of-contemporary-understandings-of-genetic-disease
#16
Rachel A Ankeny
Prior to the genomic sequencing era, the bible for those working in clinical genetics was McKusick's Mendelian Inheritance in Man (MIM), which appeared in multiple editions between the 1960s and the late 1990s. This catalogue was organized according to general patterns of inheritance and focused on phenotypes. Beginning in the mid-1980s, it was replaced by Online Mendelian Inheritance in Man (OMIM®), a continuously updated catalogue documenting molecular relationships between genetic variation and phenotypic expression...
June 21, 2017: Journal of Medicine and Philosophy
https://www.readbyqxmd.com/read/28640947/clinico-molecular-analysis-of-eleven-patients-with-hermansky-pudlak-type-5-syndrome-a-mild-form-of-hps
#17
Vincent Michaud, Eulalie Lasseaux, Claudio Plaisant, Alain Verloes, Yaumara Perdomo-Trujillo, Christian Hamel, Nursel H Elcioglu, Bart Leroy, Josseline Kaplan, Pierre-Simon Jouk, Didier Lacombe, Patricia Fergelot, Fanny Morice-Picard, Benoit Arveiler
Hermansky-Pudlak syndrome (HPS), first described in 1959, is a rare form of syndromic oculocutaneous albinism associated with bleeding diathesis and in some cases pulmonary fibrosis and granulomatous colitis. All 10 HPS types are caused by defects in vesicle trafficking of lysosomes-related organelles (LRO) proteins. The HPS5 protein associates with HPS3 and HPS6 to form the Biogenesis of Lysosome-related Organelles Complex-2 (BLOC-2). Here we report the clinical and genetic data of 11 HPS-5 patients analyzed in our laboratory...
June 22, 2017: Pigment Cell & Melanoma Research
https://www.readbyqxmd.com/read/28640700/cns-tumors-in-neurofibromatosis
#18
Jian Campian, David H Gutmann
Neurofibromatosis (NF) encompasses a group of distinct genetic disorders in which affected children and adults are prone to the development of benign and malignant tumors of the nervous system. The purpose of this review is to discuss the spectrum of CNS tumors arising in individuals with NF type 1 (NF1) and NF type 2 (NF2), their pathogenic etiologies, and the rational treatment options for people with these neoplasms. This article is a review of preclinical and clinical data focused on the treatment of the most common CNS tumors encountered in children and adults with NF1 and NF2...
June 22, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28640387/dna-mismatch-repair-deficiency-and-hereditary-syndromes-in-latino-patients-with-colorectal-cancer
#19
Charité N Ricker, Diana L Hanna, Cheng Peng, Nathalie T Nguyen, Mariana C Stern, Stephanie L Schmit, Greg E Idos, Ravi Patel, Steven Tsai, Veronica Ramirez, Sonia Lin, Vinay Shamasunadara, Afsaneh Barzi, Heinz-Josef Lenz, Jane C Figueiredo
BACKGROUND: The landscape of hereditary syndromes and clinicopathologic characteristics among US Latino/Hispanic individuals with colorectal cancer (CRC) remains poorly understood. METHODS: A total of 265 patients with CRC who were enrolled in the Hispanic Colorectal Cancer Study were included in the current study. Information regarding CRC risk factors was elicited through interviews, and treatment and survival data were abstracted from clinical charts. Tumor studies and germline genetic testing results were collected from medical records or performed using standard molecular methods...
June 22, 2017: Cancer
https://www.readbyqxmd.com/read/28640244/systematic-design-and-comparison-of-expanded-carrier-screening-panels
#20
Kyle A Beauchamp, Dale Muzzey, Kenny K Wong, Gregory J Hogan, Kambiz Karimi, Sophie I Candille, Nikita Mehta, Rebecca Mar-Heyming, K Eerik Kaseniit, H Peter Kang, Eric A Evans, James D Goldberg, Gabriel A Lazarin, Imran S Haque
PurposeThe recent growth in pan-ethnic expanded carrier screening (ECS) has raised questions about how such panels might be designed and evaluated systematically. Design principles for ECS panels might improve clinical detection of at-risk couples and facilitate objective discussions of panel choice.MethodsGuided by medical-society statements, we propose a method for the design of ECS panels that aims to maximize the aggregate and per-disease sensitivity and specificity across a range of Mendelian disorders considered serious by a systematic classification scheme...
June 22, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
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