| Haplotypes of MDR1 gene | Haplotype frequency | p value | |||
| C1236T | G2677T/A | C3435T | IM Responders (n = 22) | IM non-Responders (n = 26) | |
| C | G | C | 45.5 | 69.2 | 0.13 |
| C | G | T | 13.6 | 7.7 | 0.41 |
| T | G | C | 9.1 | 0 | 0.20 |
| C | T | C | 13.6 | 7.7 | 0.41 |
| C | T | T | 4.5 | 0 | 0.45 |
| T | T | C | 9.1 | 0 | 0.20 |
| T | T | T | 4.5 | 0 | 0.45 |
| C | A | C | 0 | 15.4 | 0.038 |