| Genotype | Codon change | Total case | Frequency (%) |
| IVSI + 1G > A/_ | 8 | 36 | |
| c.35delG/_ | Gly12Val fs/_ | 7 | 31.8 |
| c.380G > A/_ | Arg127His/_ | 3 | 13.6 |
| c.95G > A/_ | Arg32His/_ | 2 | 9 |
| c.478G > A/_ | Gly160Ser/_ | 1 | 4.5 |
| c.138T > G/_ | Asp46Glu/_ | 1 | 4.5 |
| Total |
| 22 |
|