Orthology established by Blevins et al., 2011 (5 genes)

Orthology for pcdh1a ( Chr: 10 )
Orthology for pcdh1b ( Chr: 14 )
Orthology for pcdh7a ( Chr: 1 )
Orthology for pcdh7b ( Chr: 7 )
Orthology for pcdh9 ( Chr: 6 )