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Table 4 Total number of LA dogs DNA tested for PRA4, showing genotypes and allele frequencies of the LINE-1 insertion

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

0.1

  1. aThe wild type allele is represented by ‘+’ and the mutant allele by ‘-‘