Classifying disease chromosomes arising from multiple founders, with application to fine-scale haplotype mapping.

abstract：:We compare four strategies for finding the settings of genetic parameters that maximize the lod scores reported in GENEHUNTER 1.2. The four strategies are iterated complete factorial designs, iterated orthogonal Latin hypercubes, evolutionary operation, and numerical optimization. The genetic parameters that are set a...

journal_title：Genetic epidemiology

authors： Chen CH,Finch SJ,Mendell NR,Gordon D

更新日期：1999-01-01 00:00:00

abstract：:We determined pairwise linkage disequilibria between 12 restriction fragment length polymorphism (RFLP) markers at or near the low-density lipoprotein receptor (LDLR) locus on chromosome 19p13.2-13.1 in 92 unrelated individuals. Of these 12 RFLPs, two were newly identified under a cosmid-based strategy designed to scr...

journal_title：Genetic epidemiology

authors： Hegele RA,Plaetke R,Lalouel JM

更新日期：1990-01-01 00:00:00

abstract：:Our goal was to detect genes contributing to the P300 component of the event related potential (ERP). We found that all of the ERP traits were highly correlated. Most of them distinguished alcoholics from nonalcoholics. To have one summary variable for the ERP traits, we calculated the first principal component (PRIN1...

journal_title：Genetic epidemiology

authors： Goldin LR,Chase GA

更新日期：1999-01-01 00:00:00

abstract：:Sub-Saharan Africa has been identified as the part of the world with the greatest human genetic diversity. This high level of diversity causes difficulties for genome-wide association (GWA) studies in African populations-for example, by reducing the accuracy of genotype imputation in African populations compared to no...

journal_title：Genetic epidemiology

authors： Huang L,Jakobsson M,Pemberton TJ,Ibrahim M,Nyambo T,Omar S,Pritchard JK,Tishkoff SA,Rosenberg NA

更新日期：2011-12-01 00:00:00

abstract：:Copper incorporation studies were performed on individuals from 58 pedigrees, comprising 140 sibships. As previously reported, there is considerable overlap between heterozygotes and normal homozygotes. Segregation analysis supports recessive inheritance of disease, with residual heritability for 64Cu uptake in cultur...

journal_title：Genetic epidemiology

authors： Horn N,Morton NE

更新日期：1986-01-01 00:00:00

abstract：:alpha 1-antitrypsin (alpha 1 AT) deficiency is variably associated with the development of pulmonary emphysema. To gain insight into the process which begins the Z point mutation at the Protease Inhibitor (Pi) locus and results in the variable development of emphysema, three quantitative phenotypes, including total al...

journal_title：Genetic epidemiology

authors： Silverman EK,Province MA,Campbell EJ,Pierce JA,Rao DC

更新日期：1990-01-01 00:00:00

abstract：:Simulation studies were conducted to assess to what extent the conclusions of segregation analysis, performed under the unified model, can be affected by the presence of unmeasured environmental factors shared by family members. Dichotomous data were generated on six-member nuclear families under two variants of the m...

journal_title：Genetic epidemiology

authors： Demenais F,Abel L

更新日期：1989-01-01 00:00:00

abstract：:Variable selection is growing in importance with the advent of high throughput genotyping methods requiring analysis of hundreds to thousands of single nucleotide polymorphisms (SNPs) and the increased interest in using these genetic studies to better understand common, complex diseases. Up to now, the standard approa...

journal_title：Genetic epidemiology

authors： Fridley BL

更新日期：2009-01-01 00:00:00

abstract：:Artificial neural networks were applied to the alcoholism data to reveal nonlinear relationships between intermediate phenotypes, marker identity-by-descent sharing, and the affection status. A variable number of hidden units were considered to achieve a balance between the minimal mean-squared error and over-fitting ...

journal_title：Genetic epidemiology

authors： Li W,Haghighi F,Falk CT

更新日期：1999-01-01 00:00:00

abstract：:In this paper, we proposed a multipoint method to assess evidence of linkage to one region by incorporating linkage evidence from another region. This approach uses affected sib pairs in which the number of alleles shared identical by descent (IBD) is the primary statistic. This generalized estimating equation (GEE) a...

journal_title：Genetic epidemiology

authors： Liang KY,Chiu YF,Beaty TH,Wjst M

更新日期：2001-09-01 00:00:00

abstract：:Regressive models that incorporate measured variables and assumed genetic parameters were used to detect interactions between gene, research site, and environmental variables in GAW11 Problem 2. Replicates 1 to 5 were used in the analyses. Significant three-way gene x environment x site interactions were seen for all ...

journal_title：Genetic epidemiology

authors： Shin J,Corey M

更新日期：1999-01-01 00:00:00

abstract：:Population stratification (PS) can lead to an inflated rate of false-positive findings in genome-wide association studies (GWAS). The commonly used approach of adjustment for a fixed number of principal components (PCs) could have a deleterious impact on power when selected PCs are equally distributed in cases and con...

journal_title：Genetic epidemiology

authors： Li Q,Wacholder S,Hunter DJ,Hoover RN,Chanock S,Thomas G,Yu K

更新日期：2009-07-01 00:00:00

abstract：:Linkage analyses and association studies were employed to detect disease susceptibility loci leading to elevated Q1 levels in Problem 2B. Phenotypes were defined to be the dichotomous affection status, the quantitative value for Q1, and Q1 adjusted for covariates. The method of mod-scores (for the dichotomous phenotyp...

journal_title：Genetic epidemiology

authors： Neuman RJ,Xian H

更新日期：1997-01-01 00:00:00

abstract：:Case-only studies are often used to identify interactions between a genetic factor and an environmental factor under the assumption both factors are independent in the population. However, interpreting a statistical association between the genetic and the environmental factors among the cases, as evidence of a mechani...

journal_title：Genetic epidemiology

authors： VanderWeele TJ,Hernández-Díaz S,Hernán MA

更新日期：2010-05-01 00:00:00

abstract：:When many correlated traits are measured the potential exists to discover the coordinated control of these traits via genotyped polymorphisms. A common statistical approach to this problem involves assessing the relationship between each phenotype and each single nucleotide polymorphism (SNP) individually (PHN); and t...

journal_title：Genetic epidemiology

authors： Klei L,Luca D,Devlin B,Roeder K

更新日期：2008-01-01 00:00:00

abstract：:Genetic epidemiology is a relatively new discipline that seeks to unravel the role of genetic factors and their interactions with environmental factors in the etiology of diseases, using population and family study approaches. To characterize the overall direction and emphasis of research strategies used in this field...

journal_title：Genetic epidemiology

authors： Khoury MJ,Beaty TH,Cohen BH

更新日期：1993-01-01 00:00:00

abstract：:The participants of Presentation Group 18 of Genetic Analysis Workshop 14 analyzed the Collaborative Study on the Genetics of Alcoholism data set to investigate sex-specific effects for phenotypes related to alcohol dependence. In particular, the participants looked at imprinting (which is also known as parent-of-orig...

journal_title：Genetic epidemiology

authors： Strauch K,Baur MP

更新日期：2005-01-01 00:00:00

abstract：:Alcohol dependence often is a familial disorder and has a genetic component. Research in causative factors of alcoholism is coordinated by a multi-center program, COGA [The Collaborative Study on the Genetics of Alcoholism, Begleiter et al., 1995]. We analyzed a subset of the COGA family sample, 84 pedigrees of Caucas...

journal_title：Genetic epidemiology

authors： Windemuth C,Hahn A,Strauch K,Baur MP,Wienker TF

更新日期：1999-01-01 00:00:00

abstract：:In the last two decades, complex traits have become the main focus of genetic studies. The hypothesis that both rare and common variants are associated with complex traits is increasingly being discussed. Family-based association studies using relatively large pedigrees are suitable for both rare and common variant id...

journal_title：Genetic epidemiology

authors： Saad M,Wijsman EM

更新日期：2014-11-01 00:00:00

abstract：:Multifactor dimensionality reduction (MDR) was developed as a nonparametric and model-free data mining method for detecting, characterizing, and interpreting epistasis in the absence of significant main effects in genetic and epidemiologic studies of complex traits such as disease susceptibility. The goal of MDR is to...

journal_title：Genetic epidemiology

authors： Pattin KA,White BC,Barney N,Gui J,Nelson HH,Kelsey KT,Andrew AS,Karagas MR,Moore JH

更新日期：2009-01-01 00:00:00

abstract：:Linkage disequilibrium mapping of quantitative traits is a powerful method for dissecting the genetic etiology of complex phenotypes. Quantitative traits, however, often exhibit characteristics that make their use problematic. For example, the distribution of the trait may be censored, highly skewed, or contaminated w...

journal_title：Genetic epidemiology

authors： Allen AS,Martin ER,Qin X,Li YJ

更新日期：2006-04-01 00:00:00

abstract：:The Framingham Heart Study data, as well as a related simulated data set, were generously provided to the participants of the Genetic Analysis Workshop 13 in order that newly developed and emerging statistical methodologies could be tested on that well-characterized data set. The impetus driving the development of nov...

journal_title：Genetic epidemiology

authors： Costello TJ,Falk CT,Ye KQ

更新日期：2003-01-01 00:00:00

abstract：:High-throughput sequencing data can be used to predict phenotypes from genotypes, and this corresponds to establishing a prognostic model. In extended pedigrees the relatedness of subjects provides additional information so that genetic values, fixed or random genetic components, and heritability can be estimated. At ...

journal_title：Genetic epidemiology

authors： Ziegler A,Bohossian N,Diego VP,Yao C

更新日期：2014-09-01 00:00:00

abstract：:Several methods have been proposed to increase power in rare variant association testing by aggregating information from individual rare variants (MAF < 0.005). However, how to best combine rare variants across multiple ethnicities and the relative performance of designs using different ethnic sampling fractions remai...

journal_title：Genetic epidemiology

authors： Mensah-Ablorh A,Lindstrom S,Haiman CA,Henderson BE,Marchand LL,Lee S,Stram DO,Eliassen AH,Price A,Kraft P

更新日期：2016-01-01 00:00:00

abstract：:It is generally accepted that cancer is caused by environmental and inherited factors but these are only partially identified. Family studies can be informative but they do not separate shared lifestyles and genes. We estimate familial risks for concordant cancers between spouses in common cancers of both sexes in ord...

journal_title：Genetic epidemiology

authors： Hemminki K,Dong C,Vaittinen P

更新日期：2001-02-01 00:00:00

abstract：:We examined the power of the stepwise iterated generalized least squares (GLS) method by modeling the relationship between quantitative traits and other variables using the simulated data for Problem 2A. The comparison between the generating model provided by the workshop and the results of the stepwise iterated GLS m...

journal_title：Genetic epidemiology

authors： He Q,Nemesure BB,Mendell NR

更新日期：1997-01-01 00:00:00

abstract：:The inheritance of pyloric stenosis is explained by a multifactorial threshold model with an underlying assumption that the liability for the disease is distributed in males and females showing a sex dimorphism. From the available data on familial occurrences of pyloric stenosis, it is shown, that an extra maternal ef...

journal_title：Genetic epidemiology

authors： Chakraborty R

更新日期：1986-01-01 00:00:00

abstract：:Although next-generation DNA sequencing technologies have made rare variant association studies feasible and affordable, the development of powerful statistical methods for rare variant association studies is still under way. Most of the existing methods for rare variant association studies compare the number of rare ...

journal_title：Genetic epidemiology

authors： Fang S,Sha Q,Zhang S

更新日期：2012-07-01 00:00:00

abstract：:In spite of the success of genome-wide association studies in finding many common variants associated with disease, these variants seem to explain only a small proportion of the estimated heritability. Data collection has turned toward exome and whole genome sequencing, but it is well known that single marker methods ...

journal_title：Genetic epidemiology

authors： Ayers KL,Cordell HJ

更新日期：2013-09-01 00:00:00

abstract：:In this paper we investigate the power to identify gene x gene interactions in genome-wide association studies. In our analysis we focus on two-stage analyses: analyses in which we only test for interactions between single nucleotide polymorphisms that show some marginal effect. We give two algorithms to compute signi...

journal_title：Genetic epidemiology

authors： Kooperberg C,Leblanc M

更新日期：2008-04-01 00:00:00