TY - JOUR A1 - Fiddes, Ian T. A1 - Armstrong, Joel A1 - Diekhans, Mark A1 - Nachtweide, Stefanie A1 - Kronenberg, Zev N. A1 - Underwood, Jason G. A1 - Gordon, David A1 - Earl, Dent A1 - Keane, Thomas A1 - Eichler, Evan E. A1 - Haussler, David A1 - Stanke, Mario A1 - Paten, Benedict T1 - Comparative Annotation Toolkit (CAT)—simultaneous clade and personal genome annotation Y1 - 2018/07/01 JF - Genome Research JO - Genome Research SP - 1029 EP - 1038 DO - 10.1101/gr.233460.117 VL - 28 IS - 7 UR - http://genome.cshlp.org/content/28/7/1029.abstract N2 - The recent introductions of low-cost, long-read, and read-cloud sequencing technologies coupled with intense efforts to develop efficient algorithms have made affordable, high-quality de novo sequence assembly a realistic proposition. The result is an explosion of new, ultracontiguous genome assemblies. To compare these genomes, we need robust methods for genome annotation. We describe the fully open source Comparative Annotation Toolkit (CAT), which provides a flexible way to simultaneously annotate entire clades and identify orthology relationships. We show that CAT can be used to improve annotations on the rat genome, annotate the great apes, annotate a diverse set of mammals, and annotate personal, diploid human genomes. We demonstrate the resulting discovery of novel genes, isoforms, and structural variants—even in genomes as well studied as rat and the great apes—and how these annotations improve cross-species RNA expression experiments. ER -