Table 1 The frequency of different FMR1 CGG repeats in the study groups.

From: Prevalence and implications of fragile X premutation screening in Thailand

FMR1 CGG repeats

Normal females (N = 369)

SCA-negative males (N = 449)

Normal (both alleles < 45 CGG)

364 (98.64%)

446 (99.33%)

Intermediate (45–54 CGG)

4 (1.08%)*

3 (0.67%)

Premutation (55–200 CGG)

1 (0.27%)**

0 (0%)

Full mutation (> 200 CGG)

0 (0%)

0 (%)

  1. * 2 cases with 30,46 CGGs; 1 case with 29,46; 1 case with 32,49.
  2. ** 30,89 CGG repeats.
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