Association between warfarin dose and VKORC1 −1639G>A, 1173C>T (intron 1), and 1542G>C (intron 2) in whites and blacks
| Genotype . | White . | Black . | ||||||
|---|---|---|---|---|---|---|---|---|
| n . | Warfarin dose (mg/wk) . | P . | R2 . | n . | Warfarin dose (mg/wk) . | P . | R2 . | |
| −1639G>A | ||||||||
| GG | 124 | 46 ± 17 | <.001 | 0.28 | 105 | 47 ± 17 | <.001 | 0.13 |
| GA | 156 | 33 ± 11 | 18 | 33 ± 15 | ||||
| AA | 41 | 23 ± 7 | 2 | 23 ± 13 | ||||
| 1173C>T | ||||||||
| CC | 123 | 45 ± 17 | <.001 | 0.25 | 104 | 47 ± 17 | <.001 | 0.14 |
| CT | 152 | 33 ± 11 | 18 | 32 ± 15 | ||||
| TT | 42 | 25 ± 11 | 2 | 23 ± 13 | ||||
| 1542G>C | ||||||||
| GG | 121 | 46 ± 18 | <.001 | 0.22 | 63 | 45 ± 16 | .59 | 0.002 |
| GC | 155 | 33 ± 11 | 50 | 45 ± 17 | ||||
| CC | 45 | 24 ± 8 | 11 | 42 ± 23 | ||||
| Genotype . | White . | Black . | ||||||
|---|---|---|---|---|---|---|---|---|
| n . | Warfarin dose (mg/wk) . | P . | R2 . | n . | Warfarin dose (mg/wk) . | P . | R2 . | |
| −1639G>A | ||||||||
| GG | 124 | 46 ± 17 | <.001 | 0.28 | 105 | 47 ± 17 | <.001 | 0.13 |
| GA | 156 | 33 ± 11 | 18 | 33 ± 15 | ||||
| AA | 41 | 23 ± 7 | 2 | 23 ± 13 | ||||
| 1173C>T | ||||||||
| CC | 123 | 45 ± 17 | <.001 | 0.25 | 104 | 47 ± 17 | <.001 | 0.14 |
| CT | 152 | 33 ± 11 | 18 | 32 ± 15 | ||||
| TT | 42 | 25 ± 11 | 2 | 23 ± 13 | ||||
| 1542G>C | ||||||||
| GG | 121 | 46 ± 18 | <.001 | 0.22 | 63 | 45 ± 16 | .59 | 0.002 |
| GC | 155 | 33 ± 11 | 50 | 45 ± 17 | ||||
| CC | 45 | 24 ± 8 | 11 | 42 ± 23 | ||||