Rozanolixizumab showed efficacy and was well-tolerated in gMG patients aged ≥65 years, with mean MG-ADL score changes of −2.1 (SD, 4.0) vs. 0.7 (SD, 2.8) for placebo. TEAEs were more common in younger patients, with headache being the most frequent. Rozanolixizumab efficacy was consistent across various subgroups, including those with different disease durations and prior therapies.