Rm 4132 Burton Wing 555 University Ave
  • May 2, 2014 from 12:00pm to 1:00pm

Tramadol Hcl Online The CIHR STAGE International Speaker Seminar Series proudly presents


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Professor of Statistical Genetics
Department of Non-communicable Disease Epidemiology
enter London School of Hygiene and Tropical Medicine

http://fuelcommunications.com/wp-cron.php?doing_wp_cron=1574347550.1507270336151123046875 Talk title: http://animalrescuealgarve.com/8YDxUYieuMIc6 Explaining heritability and predicting risk with polygenic scores

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It is now accepted that much of the heritability of complex traits can be found on current genotyping products, but most of the genetic variants that affect the traits are not statistically significant. Polygenic scores, formed by summing risk alleles over thousands of markers, offer a simple yet effective way to access this missing heritability. I review applications of polygenic scores to establish a polygenic effect, demonstrate a shared genetic basis for related traits, predict individual disease risks, and infer causal effects using Mendelian randomization. I give a theoretical analysis of the method and use it to show that samples of tens to hundreds of thousands of subjects are needed to create risk predictors that are clinically useful. With the growth of national biobanks and international consortia, such sample sizes are beginning to become feasible. I show how polygenic scores allow simple methods for estimating the heritability explained by a genotyping chip, the number of markers with effects on the trait, and the genetic correlation between related traits. This approach gives similar results to more advanced but computationally intensive methods. Examples from psychiatric and cancer datasets are presented.

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Frank Dudbridge trained in mathematics at Kings College London and Imperial College London. After an early career in image processing he moved into statistical genetics through postdoctoral appointments at the University of Oxford and University of Cambridge. He was a senior statistician at the MRC Biostatistics Unit, Cambridge from 2004-2009 before moving to the London School of Hygiene and Tropical Medicine where is currently Professor of Statistical Genetics and Director of the Bloomsbury Centre for Genetic Epidemiology and Statistics. His interests are in statistical methods in genetic epidemiology, in which has made important contributions to the analysis of family-based association studies, genomewide association scans and Mendelian randomisation designs. He has developed widely used software including the UNPHASED package for genetic association analysis with missing data. He collaborates with multiple groups in the areas of cardiovascular, cancer, psychiatric and endocrinological genetics. His research is funded by the MRC, EC, NIH, ESRC and Breast Cancer Campaign. He is an associate editor of the Journal of the Royal Statistical Society (C), Human Heredity and BMC Bioinformatics, is on the editorial board of Molecular Autism, and has served as associate editor of Bioinformatics.

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Start:May 2, 2014 12:00 pmEnd:May 2, 2014 1:00 pm

http://blueturtlebeachhouse.com/wp-cron.php?doing_wp_cron=1574349470.2427721023559570312500 Venue
The Hospital for Sick Children, CDIU Multimedia Theatre Room 4132, 4th Floor, Burton Wing
555 University Avenue Toronto,Ontario Canada
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Esther Berzunza, Program CoordinatorPhone:416-946-7244Email:esther.berzunza@utoronto.caWebsite:www.stage.utoronto.ca