We have incorporated these methods into a user-friendly web server: SNPinfo (http://www.niehs.nih.gov/snpinfo). The web utility is supported by a set of optimized mySQL databases. Depending on the specific pipeline being used (GenePipe, GenomePipe or LinkagePipe), an investigator may input several types of data: a list of candidate genes, a GWAS SNP list of Reference Sequence (rs) numbers with associated P-value from the GWAS of interest, or a list of linkage loci.