Haplotype frequency models are used to estimate the population frequency of a sequence of alleles at tightly-linked genetic loci. These models are a fundamental tool for genetic analysis because they enable analyses to use information from correlated, closely-spaced genetic variants. Haplotype frequency models are the technology underlying many important analyses, including genotype calling from low-coverage sequence data, imputation of ungenotyped markers, haplotype phasing, inference of population ancestry at a genetic locus, and detection of segments of identity-by-descent. This research will develop a more accurate and more computationally efficient haplotype frequency model, and it will develop faster, more accurate methods for haplotype phasing and genotype imputation.

Public Health Relevance

The genetic variants carried by an individual can increase or decrease the individual's risk of heritable diseases such as cardiovascular disease and diabetes. This research will develop new methods and software that improve scientists' ability to identify genetic variants that increase or decrease risk of disease. These methods will contribute to the prevention, diagnosis, and treatment of heritable diseases in the United States and throughout the world.

Agency
National Institute of Health (NIH)
Institute
National Human Genome Research Institute (NHGRI)
Type
Research Project (R01)
Project #
5R01HG008359-02
Application #
9143163
Study Section
Genomics, Computational Biology and Technology Study Section (GCAT)
Program Officer
Brooks, Lisa
Project Start
2015-09-15
Project End
2018-08-31
Budget Start
2016-09-01
Budget End
2017-08-31
Support Year
2
Fiscal Year
2016
Total Cost
Indirect Cost
Name
University of Washington
Department
Internal Medicine/Medicine
Type
Schools of Medicine
DUNS #
605799469
City
Seattle
State
WA
Country
United States
Zip Code
98195
Browning, Brian L; Zhou, Ying; Browning, Sharon R (2018) A One-Penny Imputed Genome from Next-Generation Reference Panels. Am J Hum Genet 103:338-348
Stamatoyannopoulos, George; Bose, Aritra; Teodosiadis, Athanasios et al. (2017) Genetics of the peloponnesean populations and the theory of extinction of the medieval peloponnesean Greeks. Eur J Hum Genet 25:637-645
Jarvik, Gail P; Browning, Brian L (2016) Consideration of Cosegregation in the Pathogenicity Classification of Genomic Variants. Am J Hum Genet 98:1077-1081
Browning, Brian L; Browning, Sharon R (2016) Genotype Imputation with Millions of Reference Samples. Am J Hum Genet 98:116-26