WFRF:(Hamsten Anders)
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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 04449naa a2200445 4500 | |
| 001 | oai:DiVA.org:kth-175933 | |
| 003 | SwePub | |
| 008 | 151026s2015 | |||||||||||000 ||eng| | |
| 009 | oai:prod.swepub.kib.ki.se:132117608 | |
| 009 | oai:DiVA.org:su-122345 | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1759332 URI |
| 024 | 7 | a https://doi.org/10.1371/journal.pgen.10055022 DOI |
| 024 | 7 | a http://kipublications.ki.se/Default.aspx?queryparsed=id:1321176082 URI |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1223452 URI |
| 040 | a (SwePub)kthd (SwePub)kid (SwePub)su | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Frånberg, Mattias,d 1985-u Stockholms universitet,Numerisk analys och datalogi (NADA),Science for Life Laboratory (SciLifeLab),Karolinska Institutet, Sweden4 aut0 (Swepub:su)mafr3971 |
| 245 | 1 0 | a Discovering Genetic Interactions in Large-Scale Association Studies by Stage-wise Likelihood Ratio Tests |
| 264 | c 2015-09-24 | |
| 264 | 1 | b Public Library of Science (PLoS),c 2015 |
| 338 | a print2 rdacarrier | |
| 500 | a QC 20151103 | |
| 520 | a Despite the success of genome-wide association studies in medical genetics, the underlying genetics of many complex diseases remains enigmatic. One plausible reason for this could be the failure to account for the presence of genetic interactions in current analyses. Exhaustive investigations of interactions are typically infeasible because the vast number of possible interactions impose hard statistical and computational challenges. There is, therefore, a need for computationally efficient methods that build on models appropriately capturing interaction. We introduce a new methodology where we augment the interaction hypothesis with a set of simpler hypotheses that are tested, in order of their complexity, against a saturated alternative hypothesis representing interaction. This sequential testing provides an efficient way to reduce the number of non-interacting variant pairs before the final interaction test. We devise two different methods, one that relies on a priori estimated numbers of marginally associated variants to correct for multiple tests, and a second that does this adaptively. We show that our methodology in general has an improved statistical power in comparison to seven other methods, and, using the idea of closed testing, that it controls the family-wise error rate. We apply our methodology to genetic data from the PRO-CARDIS coronary artery disease case/control cohort and discover three distinct interactions. While analyses on simulated data suggest that the statistical power may suffice for an exhaustive search of all variant pairs in ideal cases, we explore strategies for a priori selecting subsets of variant pairs to test. Our new methodology facilitates identification of new disease-relevant interactions from existing and future genome-wide association data, which may involve genes with previously unknown association to the disease. Moreover, it enables construction of interaction networks that provide a systems biology view of complex diseases, serving as a basis for more comprehensive understanding of disease pathophysiology and its clinical consequences. | |
| 650 | 7 | a NATURVETENSKAPx Biologi0 (SwePub)1062 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Biological Sciences0 (SwePub)1062 hsv//eng |
| 700 | 1 | a Gertow, Karlu Karolinska Institutet4 aut |
| 700 | 1 | a Hamsten, Andersu Karolinska Institutet4 aut |
| 700 | 1 | a Lagergren, Jensu KTH,Beräkningsbiologi, CB,Science for Life Laboratory, SciLifeLab,SeRC - Swedish e-Science Research Centre4 aut0 (Swepub:kth)u13fcyg9 |
| 700 | 1 | a Sennblad, Bengtu Karolinska Institutet4 aut |
| 710 | 2 | a Stockholms universitetb Numerisk analys och datalogi (NADA)4 org |
| 773 | 0 | t PLOS Geneticsd : Public Library of Science (PLoS)g 11:9q 11:9x 1553-7390x 1553-7404 |
| 856 | 4 | u https://doi.org/10.1371/journal.pgen.1005502y Fulltext |
| 856 | 4 | u https://journals.plos.org/plosgenetics/article/file?id=10.1371/journal.pgen.1005502&type=printable |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-175933 |
| 856 | 4 8 | u https://doi.org/10.1371/journal.pgen.1005502 |
| 856 | 4 8 | u http://kipublications.ki.se/Default.aspx?queryparsed=id:132117608 |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-122345 |
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