Table 3.
Frequency of CCG alleles in normal individuals and HD patients in population of different geographical origins (n (%))
| Alleles | Western countries (n = 479)[2] | The mainland of China (n = 85)[33,34] | Japan (n = 73)[5,35] | Taiwan (China) (n = 36)[21] | India (n = 28)[23] | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| WT HTT* | MT HTT† | WT HTT | MT HTT | WT HTT | MT HTT | WT HTT | MT HTT | WT HTT | MT HTT | |
| CCG7 | 325 (67.8) | 168 (94.4) | 151 (45.2) | 31 (36.5) | 115 (62.2) | 69 (17.8) | 199 (57.9) | 11 (30.6) | 276 (72.6) | 25 (89.3) |
| CCG10 | 130 (27.1) | 10 (5.6) | 138 (41.3) | 51 (60.0) | 69 (37.3) | 60 (82.2) | 135 (39.2) | 25 (69.4) | 76 (20.0) | 3 (10.7) |
n means number of HD patients. *WT HTT: wildtype Huntingtin, normal individuals; †MT HTT: mutanttype Huntingtin, HD patients; HD: Huntington disease.