Table 1. SNP-IDs of the five SNPs genotyped in the validation set of 843 German Shepherd Dogs, their position on dog chromosome (CFA), their chromosomal position according to CanFam2.0, their minor alleles, their minor allele frequencies (MAF) in all dogs and among 277 unaffected dogs (CHD-grade A) and 566 affected dogs with 349 dogs classified as CHD-grade C, 152 dogs as CHD-grade D and 65 dogs as CHD-grade E.

SNP-ID	CFA	Position	Minor	MAF
(CanFam2.0)		(Mb)	allele	Total	CHD-A	CHD-C/D/E	CHD-C	CHD-D	CHD-E
TIGRP2P265674	19	35.533	C	0.067	0.070	0.065	0.064	0.060	0.079
BICF2S2367279	24	28.944	G	0.483	0.247	0.607	0.419	0.655	0.587
BICF2P281364	26	17.181	G	0.366	0.506	0.299	0.293	0.305	0.318
BICF2P1086886	34	4.239	T	0.300	0.208	0.344	0.344	0.333	0.365
BICF2P355865	34	39.346	A	0.322	0.287	0.334	0.343	0.332	0.341