From: A LINE-1 insertion situated in the promoter of IMPG2 is associated with autosomal recessive progressive retinal atrophy in Lhasa Apso dogs
Genotypea
Cohort
PRA4 −/−
PRA4 −/+
PRA4 +/+
Total
Allele frequency
Across 22 countries
6
170
735
911
0.1
UK only
4
107
457
568