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. 2014 Apr 16;1:4. doi: 10.1186/2052-6687-1-4

Table 1.

PRA2 genotypes and PRA clinical status for 2500 GRs

PRA clinical status
Genotypei PRA case PRA obligate carrier Clear Unknown Total
TTC8 -/- 22 (75.9%) 0 (0%) 0 (0%) 4 (0.2%) 26
TTC8 +/- 1 (3.4%) 2 (40.0%) 16 (3.5%) 130 (6.5%) 149
TTC8 +/+ 6 (20.7%) 3 (60.0%) 443 (96.5%) 1873 (93.3%) 2325
Total 29 5 459 2007 2500

iThe wildtype allele is represented by “+” and the mutant allele by “-”.