Table 3.
Relative effect of efgartigimod versus ravulizumab in terms of change from baseline at week 4 and at time of best response for MG-ADL, QMG and MG-QoL15r in people with AChR-Ab+ gMG derived using MAIC
Change from baseline | ||||||
---|---|---|---|---|---|---|
MG-ADL | QMG | MG-QoL15r | ||||
N | Mean (95% CI) | N | Mean (95% CI) | N | Mean (95% CI) | |
Adjusted results estimated using reweighted data from the ADAPT study | ||||||
Week 4 (time of best response) | ||||||
Efgartigimod | 53 | – 4.3 (– 5.3, – 3.3)*** | 52 | – 5.6 (– 7.1, – 4.2)*** | 53 | – 7.6 (– 9.4, – 5.8)*** |
Placebo | 55 | – 1.3 (– 2.3, – 0.3)** | 53 | – 0.7 (– 2.1, 0.7) | 55 | – 2.0 (– 3.8, – 0.2) |
Efgartigimod vs. placebo | 108 | – 3.0 (– 4.0, – 2.0)*** | 105 | – 5.0 (– 6.6, – 3.4)*** | 108 | – 5.6 (– 7.6, – 3.6)*** |
Results estimated from the CHAMPION study | ||||||
Week 4 | ||||||
Ravulizumab | 84 | – 2.6 (– 3.2, – 1.9)*** | 79 | – 2.6 (– 3.4, – 1.7)*** | 85 | – 3.2 (– 4.5, – 2.0)*** |
Placebo | 84 | – 1.5 (– 2.1, – 0.8)*** | 76 | – 0.8 (– 1.6, 0.0) | 85 | – 1.6 (– 2.8, – 0.3)** |
Ravulizumab vs. placebo | 168 | – 1.1 (– 2.0, – 0.2)* | 155 | – 1.8 (– 3.0, – 0.6)** | 170 | – 1.6 (– 3.4, 0.2) |
Week 26 (time of best response) | ||||||
Ravulizumab | 78 | – 3.1 (– 3.8, – 2.3)*** | 76 | – 2.8 (– 3.7, – 1.9)*** | 78 | – 3.3 (– 4.7, – 1.9)*** |
Placebo | 82 | – 1.4 (– 2.1, – 0.7)*** | 78 | – 0.8 (– 1.7, 0.1) | 82 | – 1.6 (– 3.0, – 0.3)* |
Ravulizumab vs. placebo | 160 | – 1.6 (– 2.6, – 0.7)** | 154 | – 2.0 (– 3.2, – 0.8)** | 160 | – 1.7 (– 3.4, 0.1) |
MAIC results anchored on above comparisons with placebo | ||||||
Efgartigimod vs. ravulizumab at week 4 | 137 | – 1.9 (– 3.3, – 0.5)** | 131 | – 3.2 (– 5.2, – 1.2)** | 138 | – 4.0 (– 6.6, – 1.4)** |
Efgartigimod vs. ravulizumab at time of best response | 131 | – 1.4 (– 2.8, 0.0)* | 128 | – 3.0 (– 5.0, – 1.0)** | 131 | – 3.9 (– 6.5, – 1.3)** |
AChR-Ab+ Acetylcholine Receptor Auto-antibodies Positive, CI Confidence Interval, gMG generalized Myasthenia Gravis, MAIC Matching-Adjusted Indirect Comparison, MG-ADL Myasthenia Gravis Activities of Daily Living, MG-QoL15r Myasthenia Gravis Quality of Life 15-item-revised scale, QMG Quantitative Myasthenia Gravis
*p value < 0.05; **p value < 0.01; ***p value < 0.001