Figure 4From: A comprehensive evaluation of ensembl, RefSeq, and UCSC annotations in the context of RNA-seq read mapping and gene quantification The overlap and intersection among RefGene, UCSC, and Ensembl annotations. In general, different annotations have very high overlaps: there are 21,598 common genes shared by all three gene models. RefGene has the fewest unique genes, while more than 50% of genes in Ensembl are unique.Back to article page