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Table 3 Geographical distribution of genetic types

From: Retinitis pigmentosa and allied conditions today: a paradigm of translational research

Country and reference Non-syndromic RP (n) adRP (%) arRP (%) xlRP (%) Syndromic RP (%)
Spain [55] 1,717 15 34 7 41 (3 unclassified)
France [56] 153 19 35 4.1 41.3
The Netherlands [57] 575 22.4 30.1 10.4 37.1
Switzerland [1] 153 9 90 1 -
Germany [58] 250 25.2 16.4 10 48.4
UK [59] 300 39 15 25 21
USA [60] 138 22 10 14 37
USA [61] 489 14.1 13.7 7 65.2
Japan [62] 1,091 2.1 40.1   43.2
Japan [63] 434 16.9 25.2 1.6 56.3
China [64] 150 13.3 67.3 2.7 16.7
South Africa [65] 63 21 15 10 54
USA [66] 68 6 13 7 74
  1. adRP: autosomal-dominant retinitis pigmentosa; arRP: autosomal-recessive retinitis pigmentosa; RP: retinitis pigmentosa; xlRP: X-linked retinitis pigmentosa.