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Genetics in Medicine: Official Journal of the American College of Medical Genetics

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https://www.readbyqxmd.com/read/28726812/a-patient-with-germ-line-gain-of-function-pdgfrb-p-n666h-mutation-and-marked-clinical-response-to-imatinib
#1
Dinel Pond, Florence A Arts, Nancy J Mendelsohn, Jean-Baptiste Demoulin, Gunter Scharer, Yoav Messinger
PurposeHeterozygous germ-line activating mutations in PDGFRB cause Kosaki and Penttinen syndromes and myofibromatosis. We describe a 10-year-old child with a germ-line PDGFRB p.N666H mutation who responded to the tyrosine kinase inhibitor imatinib by inhibition of PDGFRB.MethodsThe impact of p.N666H on PDGFRB function and sensitivity to imatinib was studied in cell culture.ResultsCells expressing the p.N666H mutation showed constitutive PDGFRB tyrosine phosphorylation. PDGF-independent proliferation was abolished by imatinib at 1 μM concentration...
July 20, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28726811/knowledge-base-and-mini-expert-platform-for-the-diagnosis-of-inborn-errors-of-metabolism
#2
Jessica J Y Lee, Wyeth W Wasserman, Georg F Hoffmann, Clara D M van Karnebeek, Nenad Blau
PurposeRecognizing individuals with inherited diseases can be difficult because signs and symptoms often overlap those of common medical conditions. Focusing on inborn errors of metabolism (IEMs), we present a method that brings the knowledge of highly specialized experts to professionals involved in early diagnoses. We introduce IEMbase, an online expert-curated IEM knowledge base combined with a prototype diagnosis support (mini-expert) system.MethodsDisease-characterizing profiles of specific biochemical markers and clinical symptoms were extracted from an expert-compiled IEM database...
July 20, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28726810/a-randomized-controlled-trial-of-disclosing-genetic-risk-information-for-alzheimer-disease-via-telephone
#3
Kurt D Christensen, Wendy R Uhlmann, J Scott Roberts, Erin Linnenbringer, Peter J Whitehouse, Charmaine D M Royal, Thomas O Obisesan, L Adrienne Cupples, Melissa B Butson, Grace-Ann Fasaye, Susan Hiraki, Clara A Chen, Uwe Siebert, Robert Cook-Deegan, Robert C Green
PurposeTelephone disclosure of genetic test results can improve access to services. To date, studies of its impact have focused on return of Mendelian risk information, principally hereditary cancer syndromes.MethodsIn a multisite trial of Alzheimer disease genetic risk disclosure, asymptomatic adults were randomized to receive test results in person or via telephone. Primary analyses examined patient outcomes 12 months after disclosure.ResultsData from 257 participants showed that telephone disclosure occurred 7...
July 20, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28726809/genomic-diagnostics-within-a-medically-underserved-population-efficacy-and-implications
#4
Kevin A Strauss, Claudia Gonzaga-Jauregui, Karlla W Brigatti, Katie B Williams, Alejandra K King, Cristopher Van Hout, Donna L Robinson, Millie Young, Kavita Praveen, Adam D Heaps, Mindy Kuebler, Aris Baras, Jeffrey G Reid, John D Overton, Frederick E Dewey, Robert N Jinks, Ian Finnegan, Scott J Mellis, Alan R Shuldiner, Erik G Puffenberger
PurposeWe integrated whole-exome sequencing (WES) and chromosomal microarray analysis (CMA) into a clinical workflow to serve an endogamous, uninsured, agrarian community.MethodsSeventy-nine probands (newborn to 49.8 years) who presented between 1998 and 2015 remained undiagnosed after biochemical and molecular investigations. We generated WES data for probands and family members and vetted variants through rephenotyping, segregation analyses, and population studies.ResultsThe most common presentation was neurological disease (64%)...
July 20, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28726808/prevalence-of-germ-line-mutations-in-cancer-genes-among-pancreatic-cancer-patients-with-a-positive-family-history
#5
Kari G Chaffee, Ann L Oberg, Robert R McWilliams, Neil Majithia, Brian A Allen, John Kidd, Nanda Singh, Anne-Renee Hartman, Richard J Wenstrup, Gloria M Petersen
PurposePanel-based genetic testing has identified increasing numbers of patients with pancreatic ductal adenocarcinoma (PDAC) who carry germ-line mutations. However, small sample sizes or number of genes evaluated limit prevalence estimates of these mutations. We estimated prevalence of mutations in PDAC patients with positive family history.MethodsWe sequenced 25 cancer susceptibility genes in lymphocyte DNA from 302 PDAC patients in the Mayo Clinic Biospecimen Resource for Pancreatic Research Registry. Kindreds containing at least two first-degree relatives with PDAC met criteria for familial pancreatic cancer (FPC), while the remaining were familial, but not FPC...
July 20, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28726807/when-genotype-is-not-predictive-of-phenotype-implications-for-genetic-counseling-based-on-21-594-chromosomal-microarray-analysis-examinations
#6
Idit Maya, Reuven Sharony, Shiri Yacobson, Sarit Kahana, Josepha Yeshaya, Tamar Tenne, Ifaat Agmon-Fishman, Lital Cohen-Vig, Yael Goldberg, Racheli Berger, Lina Basel-Salmon, Mordechai Shohat
PurposeTo compare the frequency of copy-number variants (CNVs) of variable penetrance in low-risk and high-risk prenatal samples and postnatal samples.MethodsTwo cohorts were categorized according to chromosomal microarray analysis (CMA) indication: group I, low-risk prenatal-women with uneventful pregnancy (control group); group II, high-risk prenatal-women whose fetuses had congenital malformations; and group III, postnatal-individuals with unexplained developmental delay/intellectual disability, autism spectrum disorders, or multiple congenital anomalies...
July 20, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28726806/data-sharing-as-a-national-quality-improvement-program-reporting-on-brca1-and-brca2-variant-interpretation-comparisons-through-the-canadian-open-genetics-repository-cogr
#7
Matthew S Lebo, Kathleen-Rose Zakoor, Kathy Chun, Marsha D Speevak, John S Waye, Elizabeth McCready, Jillian S Parboosingh, Ryan E Lamont, Harriet Feilotter, Ian Bosdet, Tracy Tucker, Sean Young, Aly Karsan, George S Charames, Ronald Agatep, Elizabeth L Spriggs, Caitlin Chisholm, Nasim Vasli, Hussein Daoud, Olga Jarinova, Robert Tomaszewski, Stacey Hume, Sherryl Taylor, Mohammad R Akbari, Jordan Lerner-Ellis
PurposeThe purpose of this study was to develop a national program for Canadian diagnostic laboratories to compare DNA-variant interpretations and resolve discordant-variant classifications using the BRCA1 and BRCA2 genes as a case study.MethodsBRCA1 and BRCA2 variant data were uploaded and shared through the Canadian Open Genetics Repository (COGR; http://www.opengenetics.ca). A total of 5,554 variant observations were submitted; classification differences were identified and comparison reports were sent to participating laboratories...
July 20, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28726805/prepl-deficiency-delineation-of-the-phenotype-and-development-of-a-functional-blood-assay
#8
Luc Régal, Emma Mårtensson, Isabelle Maystadt, Nicol Voermans, Damien Lederer, Alberto Burlina, María Jesús Juan Fita, A Jeannette M Hoogeboom, Mia Olsson Engman, Tess Hollemans, Meyke Schouten, Sandra Meulemans, Tord Jonson, Inge François, David Gil Ortega, Erik-Jan Kamsteeg, John W M Creemers
PurposePREPL deficiency causes neonatal hypotonia, ptosis, neonatal feeding difficulties, childhood obesity, xerostomia, and growth hormone deficiency. Different recessive contiguous gene deletion syndromes involving PREPL and a variable combination of SLC3A1 (hypotonia-cystinuria syndrome), CAMKMT (atypical hypotonia-cystinuria syndrome), and PPM1B (2p21 deletion syndrome) have been described. In isolated PREPL deficiency, previously described only once, the absence of cystinuria complicates the diagnosis...
July 20, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28726804/diagnostic-cytogenetic-testing-following-positive-noninvasive-prenatal-screening-results-a-clinical-laboratory-practice-resource-of-the-american-college-of-medical-genetics-and-genomics-acmg
#9
Athena M Cherry, Yassmine M Akkari, Kimberly M Barr, Hutton M Kearney, Nancy C Rose, Sarah T South, James H Tepperberg, Jeanne M Meck
Disclaimer: ACMG Clinical Laboratory Practice Resources are developed primarily as an educational tool for clinical laboratory geneticists to help them provide quality clinical laboratory genetic services. Adherence to these practice resources is voluntary and does not necessarily assure a successful medical outcome. This Clinical Laboratory Practice Resource should not be considered inclusive of all proper procedures and tests or exclusive of other procedures and tests that are reasonably directed to obtaining the same results...
July 20, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28726803/quality-of-life-in-men-with-klinefelter-syndrome-the-impact-of-genotype-health-socioeconomics-and-sexual-function
#10
Anne Skakkebæk, Philip J Moore, Simon Chang, Jens Fedder, Claus H Gravholt
PurposeKlinefelter syndrome (KS) is associated with lower socioeconomic status and greater morbidity. However, relatively little is known about the quality of life for men with KS, or how KS and other factors combine to determine it.MethodsA total of 132 men with KS were recruited in clinics, and 313 matched controls were identified by Statistics Denmark. Demographics, socioeconomic status, health problems and behaviors, sexual function, medical follow-up, and mental and physical quality of life (MQoL and PQoL, respectively) were assessed for all participants through surveys...
July 20, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28682309/laboratory-diagnosis-of-biotinidase-deficiency-2017-update-a-technical-standard-and-guideline-of-the-american-college-of-medical-genetics-and-genomics
#11
Erin T Strovel, Tina M Cowan, Anna I Scott, Barry Wolf
Disclaimer: These ACMG Standards and Guidelines are intended as an educational resource for clinical laboratory geneticists to help them provide quality clinical laboratory genetic services. Adherence to these Standards and Guidelines is voluntary and does not necessarily assure a successful medical outcome. These Standards and Guidelines should not be considered inclusive of all proper procedures and tests or exclusive of others that are reasonably directed to obtaining the same results. In determining the propriety of any specific procedure or test, clinical laboratory geneticists should apply their professional judgment to the specific circumstances presented by the patient or specimen...
July 6, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28682308/survival-trends-from-the-prader-willi-syndrome-association-usa-40-year-mortality-survey
#12
Ann M Manzardo, James Loker, Janalee Heinemann, Carolyn Loker, Merlin G Butler
PurposePrader-Willi syndrome (PWS) is a complex genetic disorder characterized by hyperphagia and morbid obesity with increased cardiopulmonary and hyperphagia-related mortality. Survival trends in PWS were evaluated to assess the impact of modern interventions on mortality risk.MethodsThe Prader-Willi Syndrome Association (USA) 40-year mortality syndrome-specific database of 486 death reports was utilized to examine survival trends in PWS and cohort effects for recent deaths (years 2000-2015, N=331) relative to deaths prior to 2000 (N=94)...
July 6, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28661492/quantifying-survival-in-patients-with-proteus-syndrome
#13
Julie C Sapp, Lian Hu, Jean Zhao, Ashlyn Gruber, Brian Schwartz, Dora Ferrari, Leslie G Biesecker Md
PurposeProteus syndrome is a rare mosaic overgrowth disorder that is associated with severe complications. While anecdotal data have suggested that the life span of affected patients is reduced, this has not been measured. Mortality data on rare diseases is critical for assessing treatments and other interventions.MethodsTo address this we used the clinical research records of 64 patients in a longitudinal natural history cohort at the National Institutes of Health to ascertain the data in an organized manner and estimate survival using a Kaplan-Meier approach...
June 29, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28661491/informed-decision-making-and-psychosocial-outcomes-in-pregnant-and-nonpregnant-women-offered-population-fragile-x-carrier-screening
#14
Sylvia A Metcalfe, Melissa Martyn, Alice Ames, Vicki Anderson, Alison D Archibald, Grad Dip Gen Couns, Rob Carter, Jonathan Cohen, Megan Cotter, M GenCouns, William Dang, Martin B Delatycki, Susan Donath, Samantha Edwards, PGrad Dip Educ, Grad Dip Gen Couns, Robin Forbes, Grad Dip Gen Couns, Mioara Gavrila, M MedSci, Jane Halliday, Chriselle Hickerton, Melissa Hill, Grad Dip Gen Couns, Lorilli Jacobs, PGrad Dip Ultrasound, Vicki Petrou, Grad Dip Gen Couns, Loren Plunkett, M GenCouns, Leslie Sheffield, F Racp, Alison Thornton, Grad Dip Gen Couns, Sandra Younie, PGrad Dip Hlth Econ, Jon D Emery
PurposePopulation-based carrier screening for fragile X syndrome (FXS) is still not universally endorsed by professional organizations due to concerns around genetic counseling for complex information and potential for psychosocial harms.MethodsWe determined uptake levels, decision making, and psychosocial impact in a prospective study of pregnant and nonpregnant Australian women offered FXS carrier screening in clinical settings. Women received pretest genetic counseling, and completed questionnaires when deciding and one month later...
June 29, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28661490/mutations-in-c-natriuretic-peptide-nppc-a-novel-cause-of-autosomal-dominant-short-stature
#15
Alfonso Hisado-Oliva, Alba Ruzafa-Martin, Lucia Sentchordi, Mariana F A Funari, Carolina Bezanilla-López, Marta Alonso-Bernáldez, Jimena Barraza-García, Maria Rodriguez-Zabala, Antonio M Lerario, Sara Benito-Sanz, Miriam Aza-Carmona, Angel Campos-Barros, Alexander A L Jorge, Karen E Heath
PurposeC-type natriuretic peptide (CNP) and its principal receptor, natriuretic peptide receptor B (NPR-B), have been shown to be important in skeletal development. CNP and NPR-B are encoded by natriuretic peptide precursor-C (NPPC) and natriuretic peptide receptor 2 (NPR2) genes, respectively. While NPR2 mutations have been described in patients with skeletal dysplasias and idiopathic short stature (ISS), and several Npr2 and Nppc skeletal dysplasia mouse models exist, no mutations in NPPC have been described in patients to date...
June 29, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28661489/foxg1-syndrome-genotype-phenotype-association-in-83-patients-with-foxg1-variants
#16
Diana Mitter, Milka Pringsheim, Marc Kaulisch, Kim Sarah Plümacher, Simone Schröder, Rita Warthemann, Rami Abou Jamra, Martina Baethmann, Thomas Bast, Hans-Martin Büttel, Julie S Cohen, Elizabeth Conover, Carolina Courage, Angelika Eger, Ali Fatemi, Theresa A Grebe, Natalie S Hauser, Wolfram Heinritz, Katherine L Helbig, Marion Heruth, Dagmar Huhle, Karen Höft, Stephanie Karch, Gerhard Kluger, G Christoph Korenke, Johannes R Lemke, Richard E Lutz, Steffi Patzer, Isabelle Prehl, Konstanze Hoertnagel, Keri Ramsey, Tina Rating, Angelika Rieß, Luis Rohena, Mareike Schimmel, Rachel Westman, Frank-Martin Zech, Barbara Zoll, Dörthe Malzahn, Birgit Zirn, Knut Brockmann
PurposeThe study aimed at widening the clinical and genetic spectrum and assessing genotype-phenotype associations in FOXG1 syndrome due to FOXG1 variants.MethodsWe compiled 30 new and 53 reported patients with a heterozygous pathogenic or likely pathogenic variant in FOXG1. We grouped patients according to type and location of the variant. Statistical analysis of molecular and clinical data was performed using Fisher's exact test and a nonparametric multivariate test.ResultsAmong the 30 new patients, we identified 19 novel FOXG1 variants...
June 29, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28661488/response-to-herbert-et-al
#17
Juna M de Vries, Esther Kuperus, Marianne Hoogeveen-Westerveld, Marian A Kroos, Stephan C A Wens, Merel Stok, Nadine A M E van der Beek, Michelle E Kruijshaar, Dimitris Rizopoulos, Pieter A van Doorn, Ans T van der Ploeg, W W M Pim Pijnappel
No abstract text is available yet for this article.
June 29, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28661487/cap-acmg-proficiency-testing-for-biochemical-genetics-laboratories-a-summary-of-performance
#18
Devin Oglesbee, Tina M Cowan, Marzia Pasquali, Timothy C Wood, Karen E Weck, Thomas Long, Glenn E Palomaki
PurposeTesting for inborn errors of metabolism is performed by clinical laboratories worldwide, each utilizing laboratory-developed procedures. We sought to summarize performance in the College of American Pathologists' (CAP) proficiency testing (PT) program and identify opportunities for improving laboratory quality. When evaluating PT data, we focused on a subset of laboratories that have participated in at least one survey since 2010.MethodsAn analysis of laboratory performance (2004 to 2014) on the Biochemical Genetics PT Surveys, a program administered by CAP and the American College of Medical Genetics and Genomics...
June 29, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28640247/genetic-testing-impacts-the-utility-of-prospective-familial-screening-in-hypertrophic-cardiomyopathy-through-identification-of-a-nonfamilial-subgroup
#19
Carol Ko, Patricia Arscott, Maryann Concannon, Sara Saberi, Sharlene M Day, Beverly M Yashar, Adam S Helms
PurposeHypertrophic cardiomyopathy (HCM) is considered a hereditary autosomal dominant condition, but genetic testing is positive in only half of patients. In patients with negative genetic tests, the inheritance pattern and utility of family screening are unclear.MethodsSubjects with HCM were prospectively enrolled in a registry. A survey at a median follow-up of 4 years determined the yield of family screening.ResultsThe outcome of cardiac screening on 267 family members was reported by 120 survey respondents...
June 22, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28640246/gwas-signals-revisited-using-human-knockouts
#20
Sateesh Maddirevula, Fatema AlZahrani, Shams Anazi, Mariam Almureikhi, Tawfeg Ben-Omran, Ghada M H Abdel-Salam, Mais Hashem, Niema Ibrahim, Firdous M Abdulwahab, Neama Meriki, Fahad A Bashiri, Meow-Keong Thong, Premala Muthukumarasamy, Rifhan Azwani Mazlan, Ranad Shaheen, Fowzan S Alkuraya
PurposeGenome-wide association studies (GWAS) have been instrumental to our understanding of the genetic risk determinants of complex traits. A common challenge in GWAS is the interpretation of signals, which are usually attributed to the genes closest to the polymorphic markers that display the strongest statistical association. Naturally occurring complete loss of function (knockout) of these genes in humans can inform GWAS interpretation by unmasking their deficiency state in a clinical context.MethodsWe exploited the unique population structure of Saudi Arabia to identify novel knockout events in genes previously highlighted in GWAS using combined autozygome/exome analysis...
June 22, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
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