We update our SNP annotations for the human and mouse (and occasionally for other species) whenever a new version is released by dbSNP. The latest human and mouse assemblies were updated to dbSNP Build 137 in 2012–13, and the human assembly SNP tracks were updated to dbSNP Build 138 in October 2013. The annotation includes an ‘All SNPs’ track that contains all mappings of reference SNPs to the human assembly, as well as three SNP subsets: Common SNPs (those with at least 1% minor allele frequency), Flagged SNPs (annotated by dbSNP as ‘clinical’) and Mult. SNPs (those that map to multiple genomic loci, and therefore should be viewed with suspicion). The updated tracks contain additional annotation data not included in previous dbSNP tracks, and offer coloring and filtering options for configuring the Genome Browser display.
