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Comparison of genetic variants by expanded and conventional screening.
| Genes | 159 Loci | 20 Loci | Increase (%) |
| GJB2 | 278(5.43%) | 141(2.75%) | 97.2 |
| GJB3 | 30(0.59%) | 30(0.59%) | 0.0 |
| SLC26A4 | 98(1.91%) | 81(1.58%) | 21 |
| MT-RNR1 | 50(0.98%) | 20(0.39%) | 150 |
| TMC1 | 1(0.02%) | 0(0.00%) | |
| Totality | 446(8.71%) | 270(5.27%) | 65.2 |
