Moreover, several grouping clades were also similar to those indicated by the BTB domain-based phylogenetic tree, including the clade of BTBD13 and BTBD14, the clade of BTBD3 and ZBTB3, the clade of BTBD18 and ZBTB13, and the clade including BTBD5, BBTB1, and the BTB-BACK-PHR subfamily.