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Current Genetic Medicine Reports

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https://www.readbyqxmd.com/read/29201558/human-genomics-of-mycobacterium-tuberculosis-infection-and-disease
#1
Marianna Orlova, Erwin Schurr
Purpose of review: The study of the genetic basis of tuberculosis pathogenesis has benefited from powerful technological innovations, a more structured definition of latent and clinical manifestations of the disease, and the application of functional genomics approaches. This short review aims to summarize recent advances and to provide a link with results of previous human genetic studies of tuberculosis susceptibility. Recent findings: Transcriptomics has been shown to be a useful tool to predict progression from latency to clinical disease while functional genomics has traced the molecular events that link pathogen-triggered gene expression and host genetics...
September 2017: Current Genetic Medicine Reports
https://www.readbyqxmd.com/read/29177110/advances-in-the-understanding-and-treatment-of-mitochondrial-fatty-acid-oxidation-disorders
#2
Eric S Goetzman
Purpose of review: This review focuses on advances made in the past three years with regards to understanding the mitochondrial fatty acid oxidation (FAO) pathway, the pathophysiological ramifications of genetic lesions in FAO enzymes, and emerging therapies for FAO disorders. Recent findings: FAO has now been recognized to play a key energetic role in pulmonary surfactant synthesis, T-cell differentiation and memory, and the response of the proximal tubule to kidney injury...
September 2017: Current Genetic Medicine Reports
https://www.readbyqxmd.com/read/29057168/metabolic-dysregulation-in-amyotrophic-lateral-sclerosis-challenges-and-opportunities
#3
Archi Joardar, Ernesto Manzo, Daniela C Zarnescu
PURPOSE OF REVIEW: Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease for which there is no cure and treatments are at best palliative. Several genes have been linked to ALS, which highlight defects in multiple cellular processes including RNA processing, proteostasis and metabolism. Clinical observations have identified glucose intolerance and dyslipidemia as key features of ALS however the causes of these metabolic alterations remain elusive. RECENT FINDINGS: Recent studies reveal that motor neurons and muscle cells may undergo cell type specific metabolic changes that lead to utilization of alternate fuels...
June 2017: Current Genetic Medicine Reports
https://www.readbyqxmd.com/read/29082115/using-mendelian-randomization-studies-to-assess-causality-and-identify-new-therapeutic-targets-in-cardiovascular-medicine
#4
Wei Zhao, Jung-Jin Lee, Asif Rasheed, Danish Saleheen
Integration of knowledge generated from genetic studies on intermediate biomarkers and CHD can provide a reliable approach to help assess causal pathways in coronary heart disease. Mendelian Randomization (MR) studies are a powerful tool to assess causal relevance of a range of pathways. These analyses use genetic variants as proxies for soluble biomarkers in association studies of disease risk. MR studies can provide unbiased estimates of causal effects and avoid distortions due to confounding factors arising later in life, because genetic variants are fixed at conception...
December 2016: Current Genetic Medicine Reports
https://www.readbyqxmd.com/read/29057167/pharmacogenetics-in-cardiovascular-medicine
#5
Sony Tuteja, Nita Limdi
PURPOSE OF REVIEW: Pharmacogenetics is an important component of precision medicine. Even within the genomic era, several challenges lie ahead in the road towards clinical implementation of pharmacogenetics in the clinic. This review will summarize the current state of knowledge regarding pharmacogenetics of cardiovascular drugs, focusing on those with the most evidence supporting clinical implementation- clopidogrel, warfarin and simvastatin. RECENT FINDINGS: There is limited translation of pharmacogenetics into clinical practice primarily due to the absence of outcomes data from prospective, randomized, genotype-directed clinical trials...
September 2016: Current Genetic Medicine Reports
https://www.readbyqxmd.com/read/27942422/expansion-of-the-rasopathies
#6
William E Tidyman, Katherine A Rauen
The Ras/mitogen activated protein kinase (MAPK) pathway is essential in the regulation of cell cycle, differentiation, growth, cell senescence and apoptosis, all of which are critical to normal development. A class of neurodevelopmental disorders, RASopathies, is caused by germline mutations in genes of the Ras/MAPK pathway. Through the use of whole exome sequencing and targeted sequencing of selected genes in cohorts of panel-negative RASopathy patients, several new genes have been identified. These include: RIT1, SOS2, RASA2, RRAS and SYNGAP1, that likely represent new, albeit rare, causative RASopathy genes...
September 2016: Current Genetic Medicine Reports
https://www.readbyqxmd.com/read/27867757/epigenetics-media-coverage-and-parent-responsibilities-in-the-post-genomic-era
#7
Martine Lappé
Environmental epigenetics is the study of how exposures and experiences can turn genes "on" or "off" without changing DNA sequence. By examining the influence that environmental conditions including diet, stress, trauma, toxins, and care can have on gene expression, this science suggests molecular connections between the environment, genetics, and how acquired characteristics may be inherited across generations. The rapid expansion of research in this area has attracted growing media attention. This coverage has implications for how parents and prospective parents understand health and their perceived responsibilities for children's wellbeing...
September 2016: Current Genetic Medicine Reports
https://www.readbyqxmd.com/read/27695660/psychiatric-genetics-in-child-custody-proceedings-ethical-legal-and-social-issues
#8
Maya Sabatello, S Appelbaum
This paper considers the ethical, legal, and social issues raised by the prospect of increasing use of psychiatric genetic data in child custody litigation. Although genetic tests cannot currently confirm a parent or child's psychiatric diagnosis, it is likely that as relevant findings emerge, they will be introduced in family courts to challenge parental capacity. Here, we draw on three projected, but plausible, scenarios for obtaining psychiatric data about parents -- imposed genetic testing, access to medical records, and genetic theft -- then consider the use of psychiatric genetic data of children, to highlight the issues that judges, child custody evaluators, and clinicians who may provide treatment for parents or children with mental health issues will need to consider...
September 2016: Current Genetic Medicine Reports
https://www.readbyqxmd.com/read/27722035/regulation-of-neuronal-gene-expression-by-local-axonal-translation
#9
Lulu I T Korsak, Molly E Mitchell, Katherine A Shepard, Michael R Akins
RNA localization is a key mechanism in the regulation of protein expression. In neurons, this includes the axonal transport of select mRNAs based on the recognition of axonal localization motifs in these RNAs by RNA binding proteins. Bioinformatic analyses of axonal RNAs suggest that selective inclusion of such localization motifs in mature mRNAs is one mechanism controlling the composition of the axonal transcriptome. The subsequent translation of axonal transcripts in response to specific stimuli provides precise spatiotemporal control of the axonal proteome...
March 2016: Current Genetic Medicine Reports
https://www.readbyqxmd.com/read/27134803/whole-genome-sequencing-and-newborn-screening
#10
Jeffrey R Botkin, Erin Rothwell
Clinical applications of next generation sequencing are growing at a tremendous pace. Currently the largest application of genetic testing in medicine occurs with newborn screening through state-mandated public health programs, and there are suggestions that sequencing could become a standard component of newborn care within the next decade. As such, newborn screening may appear to be a logical starting point to explore whole genome and whole exome sequencing on a population level. Yet, there are a number of ethical, social and legal implications about the use of a mandatory public health screening program that create challenges for the use of sequencing technologies in this context...
March 1, 2016: Current Genetic Medicine Reports
https://www.readbyqxmd.com/read/28286704/genetics-of-lipid-and-lipoprotein-disorders-and-traits
#11
REVIEW
Jacqueline S Dron, Robert A Hegele
PURPOSE OF REVIEW: Plasma lipids, namely cholesterol and triglyceride, and lipoproteins, such as low-density lipoprotein (LDL) and high-density lipoprotein, serve numerous physiological roles. Perturbed levels of these traits underlie monogenic dyslipidemias, a diverse group of multisystem disorders. We are on the verge of having a relatively complete picture of the human dyslipidemias and their components. RECENT FINDINGS: Recent advances in genetics of plasma lipids and lipoproteins include the following: (1) expanding the range of genes causing monogenic dyslipidemias, particularly elevated LDL cholesterol; (2) appreciating the role of polygenic effects in such traits as familial hypercholesterolemia and combined hyperlipidemia; (3) accumulating a list of common variants that determine plasma lipids and lipoproteins; (4) applying exome sequencing to identify collections of rare variants determining plasma lipids and lipoproteins that via Mendelian randomization have also implicated gene products such as NPC1L1, APOC3, LDLR, APOA5, and ANGPTL4 as causal for atherosclerotic cardiovascular disease; and (5) using naturally occurring genetic variation to identify new drug targets, including inhibitors of apolipoprotein (apo) C-III, apo(a), ANGPTL3, and ANGPTL4...
2016: Current Genetic Medicine Reports
https://www.readbyqxmd.com/read/27933223/epigenetic-editing-on-the-verge-of-reprogramming-gene-expression-at-will
#12
REVIEW
David Cano-Rodriguez, Marianne G Rots
Genome targeting has quickly developed as one of the most promising fields in science. By using programmable DNA-binding platforms and nucleases, scientists are now able to accurately edit the genome. These DNA-binding tools have recently also been applied to engineer the epigenome for gene expression modulation. Such epigenetic editing constructs have firmly demonstrated the causal role of epigenetics in instructing gene expression. Another focus of epigenome engineering is to understand the order of events of chromatin remodeling in gene expression regulation...
2016: Current Genetic Medicine Reports
https://www.readbyqxmd.com/read/27570713/genetic-counseling-for-autism-spectrum-disorder-in-an-evolving-theoretical-landscape
#13
Brenda Finucane, Scott M Myers
PURPOSE OF REVIEW: Psychiatry is steadily moving toward a new conceptualization of brain disorders that blurs long-held diagnostic distinctions among neurodevelopmental and psychiatric conditions, including autism. Genomic discoveries are driving these changing perceptions, yet there has so far been minimal impact on traditional genetic counseling practices that continue to view autism through the lens of a dichotomous, all-or-none risk model. RECENT FINDINGS: High rates of comorbidity exist across autism spectrum disorder, schizophrenia, intellectual disability, and other brain-based disorders...
2016: Current Genetic Medicine Reports
https://www.readbyqxmd.com/read/26618077/genetics-of-non-conventional-lipoprotein-fractions
#14
Alexis C Frazier-Wood
Lipoprotein subclass measures associate with cardiometabolic disease risk. Currently the information that lipoproteins convey on disease risk over that of traditional demographic and lipid measures is minimal, and so their use is clinics is limited. However, lipoprotein subclass perturbations represent some of the earliest manifestations of metabolic dysfunction, and their etiology is partially distinct from lipids, so information on the genetic etiology of lipoproteins offers promise for improved risk prediction, and unique mechanistic insights into IR and atherosclerosis...
December 2015: Current Genetic Medicine Reports
https://www.readbyqxmd.com/read/26146598/phenome-wide-association-studies-leveraging-comprehensive-phenotypic-and-genotypic-data-for-discovery
#15
S A Pendergrass, M D Ritchie
With the large volume of clinical and epidemiological data being collected, increasingly linked to extensive genotypic data, coupled with expanding high-performance computational resources, there are considerable opportunities for comprehensively exploring the networks of connections that exist between the phenome and the genome. These networks can be identified through Phenome-Wide Association Studies (PheWAS) where the association between a collection of genetic variants, or in some cases a particular clinical lab variable, and a wide and diverse range of phenotypes, diagnoses, traits, and/or outcomes are evaluated...
June 1, 2015: Current Genetic Medicine Reports
https://www.readbyqxmd.com/read/25685640/epigenetic-developmental-disorders-charge-syndrome-a-case-study
#16
Donna M Martin
Epigenetic events including chromatin remodeling and histone modifications have recently emerged as important contributors to a variety of neurodevelopmental disorders. This review focuses on CHARGE syndrome, a multiple anomaly condition caused by mutations in the gene encoding CHD7, an ATP-dependent chromatin remodeling protein. CHD7 exhibits pleiotropic effects during embryonic development, consistent with highly variable clinical features in CHARGE syndrome. In this review, a historical description of CHARGE is provided, followed by establishment of diagnostic criteria, gene discovery, and development of animal models...
March 2015: Current Genetic Medicine Reports
https://www.readbyqxmd.com/read/26566463/incidental-findings-with-genomic-testing-implications-for-genetic-counseling-practice
#17
Myra I Roche, Jonathan S Berg
This paper summarizes the current controversies surrounding the identification and disclosure of "incidental" or "secondary" findings from genomic sequencing and the implications for genetic counseling practice. The rapid expansion of clinical sequencing has influenced the ascertainment and return of incidental findings, while empiric data to inform best practices are still being generated. Using the North Carolina Clinical Genomic Evaluation by Next Generation Exome Sequencing (NCGENES) research project as an example, we discuss the implications of different models of consent and their impact on patient decisions...
2015: Current Genetic Medicine Reports
https://www.readbyqxmd.com/read/26566462/understanding-the-basics-of-ngs-from-mechanism-to-variant-calling
#18
Dale Muzzey, Eric A Evans, Caroline Lieber
Identifying disease-causing mutations in DNA has long been the goal of genetic medicine. In the last decade, the toolkit for discovering DNA variants has undergone rapid evolution: mutations that were historically discovered by analog approaches like Sanger sequencing and multiplex ligation-dependent probe amplification ("MLPA") can now be decoded from a digital signal with next-generation sequencing ("NGS"). Given the explosive growth of NGS-based tests in the clinic, it is of the utmost importance that medical practitioners have a fundamental understanding of the newest NGS methodologies...
2015: Current Genetic Medicine Reports
https://www.readbyqxmd.com/read/25664224/genetic-variants-and-related-biomarkers-in-sporadic-alzheimer-s-disease
#19
REVIEW
Rita Guerreiro, Jose Bras, Jamie Toombs, Amanda Heslegrave, John Hardy, Henrik Zetterberg
From a neuropathological perspective, elderly patients who die with a clinical diagnosis of sporadic Alzheimer's disease (AD) are a heterogeneous group with several different pathologies contributing to the AD phenotype. This poses a challenge when searching for low effect size susceptibility genes for AD. Further, control groups may be contaminated by significant numbers of preclinical AD patients, which also reduces the power of genetic association studies. Here, we discuss how cerebrospinal fluid and imaging biomarkers can be used to increase the chance of finding novel susceptibility genes and as a means to study the functional consequences of risk alleles...
2015: Current Genetic Medicine Reports
https://www.readbyqxmd.com/read/26146597/pragmatic-and-ethical-challenges-of-incorporating-the-genome-into-the-electronic-medical-record
#20
Adam A Nishimura, Peter Tarczy-Hornoch, Brian H Shirts
Recent successes in the use of gene sequencing for patient care highlight the potential of genomic medicine. For genomics to become a part of usual care, pertinent elements of a patient's genomic test must be communicated to the most appropriate care providers. Electronic medical records may serve as a useful tool for storing and disseminating genomic data. Yet, the structure of existing EMRs and the nature of genomic data pose a number of pragmatic and ethical challenges in their integration. Through a review of the recent genome-EMR integration literature, we explore concrete examples of these challenges, categorized under four key questions: What data will we store? How will we store it? How will we use it? How will we protect it? We conclude that genome-EMR integration requires a rigorous, multi-faceted and interdisciplinary approach of study...
December 1, 2014: Current Genetic Medicine Reports
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