| ArgArg or ArgGly n=15 | GlyGly n=10 | Genotype Comparison | |||
| Change from Baseline (SEM) | P-value | Change from Baseline (SEM) | P-value | P-value | |
| FEV1 (%) | -3.9 (1.2) | 0.006 | -2.3 (3.4) | 0.51 | 0.66 |
| FEF25-75 (%) | -5.2 (2.1) | 0.025 | +2.0 (3.2) | 0.55 | 0.06 |
| R5 (%) | +20.7 (5.5) | 0.003 | +6.0 (10.3) | 0.57 | 0.27 |
| Recovery FEV1 (%) | -14.3 (3.0) | <0.001 | -8.4 (2.8) | 0.014 | 0.18 |