We added many new annotation data sets to the Genome Browser in the past year, and several existing data sets underwent major revisions. Our human and mouse assemblies, which receive the bulk of attention from our user community, are the most richly annotated. This section highlights some of the new annotation tracks released this year. See Table 2 for a complete list of recent releases. Table 2.New and updated annotation data sets added to the Genome Browser between September 2012 and September 2013Annotation trackAssemblyHuman genome 1000 Genomes Phase 1 Integrated Variant Callshg19 1000 Genomes Phase 1 Paired-end Accessible Regionshg19 Affymetrix CytoScan HD Arrayhg19 Coriell Cell Line Copy Number Variantshg19 Denisova: Modern Human Derived, Sequence Reads, Variant Calls, Variant Calls from 11 Modern Human Genome Sequenceshg19 DGV: Structural Variationhg18-19 DNaseI Hypersensitivity Uniform Peaks— ENCODE/Analysishg19 ENCODE Regulation: DNaseI HS Clusters, Transaction Factor ChiP-seq Clustershg19 GENCODE Genes v14, v17hg19 GeneReviewshg18-19 GRCh37 Patch 10hg19 GWAS Catalog of Published Genome-Wide Association Studieshg18-19 Human Gene Mutation Database (HGMD)hg19 Leiden Open Variation Database (LOVD)hg19 Pfam domains in UCSC Geneshg19 Proteogenomics and GENCODE Mapping—ENCODEhg19 qPCR Primershg19 Reactome v41hg17-19