Title
SNP interaction pattern identifier (SIPI): an intensive search for SNP-SNP interaction patterns.
Abstract
Motivation: Testing SNP-SNP interactions is considered as a key for overcoming bottlenecks of genetic association studies. However, related statistical methods for testing SNP-SNP interactions are underdeveloped. Results: We propose the SNP Interaction Pattern Identifier (SIPI), which tests 45 biologically meaningful interaction patterns for a binary outcome. SIPI takes non-hierarchical models, inheritance modes and mode coding direction into consideration. The simulation results show that SIPI has higher power than MDR (Multifactor Dimensionality Reduction), AA_Full,Geno_Full (full interaction model with additive or genotypic mode) and SNPassoc in detecting interactions. Applying SIPI to the prostate cancer PRACTICAL consortium data with approximately 21 000 patients, the four SNP pairs in EGFR-EGFR, EGFR-MMP16 and EGFR-CSF1 were found to be associated with prostate cancer aggressiveness with the exact or similar pattern in the discovery and validation sets. A similar match for external validation of SNP-SNP interaction studies is suggested. We demonstrated that SIPI not only searches for more meaningful interaction patterns but can also overcome the unstable nature of interaction patterns.
Year
DOI
Venue
2017
10.1093/bioinformatics/btw762
BIOINFORMATICS
Field
DocType
Volume
World Wide Web,Identifier,Multifactor dimensionality reduction,Computer science,Computational biology,Bioinformatics,SNP
Journal
33
Issue
ISSN
Citations 
6
1367-4803
2
PageRank 
References 
Authors
0.44
3
42