Allele Frequencies
| Allele | Size (bp) | Frequency |
| a. For the insertion/deletion in intron 1 of the DSPG3 gene | ||
| A1 | 449 | 0.8 |
| A2 | 430 | 0.2 |
| b. For the tetranucleotide repeat in intron 5 of the DSPG3 gene | ||
| A1 | 279 | 0.04 |
| A2 | 275 | 0.14 |
| A3 | 271 | 0.69 |
| A4 | 267 | 0.08 |
| A5 | 263 | 0.02 |
| A6 | 255 | 0.03 |