UPLIZNA® (INEBILIZUMAB-CDON) SIGNIFICANTLY IMPROVES GENERALIZED MYASTHENIA GRAVIS SYMPTOMS IN ACETYLCHOLINE RECEPTOR AUTOANTIBODY-POSITIVE PATIENTS OVER 52 WEEKS

Patients Reported Improvement in Ability to Conduct Daily Activities with Twice-Yearly Dosing*

Late-Breaking Data to be Presented at AAN 2025

THOUSAND OAKS, Calif., March 13, 2025 /PRNewswire/ -- Amgen (NASDAQ:AMGN) today announced new data from the Phase 3, registrational MINT trial evaluating the efficacy and safety of UPLIZNA® (inebilizumab-cdon) in adults living with generalized myasthenia gravis (gMG). The results demonstrated durable and sustained efficacy of UPLIZNA in patients with acetylcholine receptor autoantibody-positive (AChR+) gMG with two doses a year, following an initial loading dose. Findings will be presented as a late-breaking oral presentation during the American Academy of Neurology (AAN) Annual Meeting on April 8, 2025, in San Diego.

The Phase 3 MINT trial, which was a randomized-control trial, evaluated UPLIZNA in muscle-specific kinase autoantibody-positive (MuSK+) and AChR+ gMG patients, with the MuSK+ group followed for 26 weeks and the AChR+ group followed for 52 weeks. The trial demonstrated continued improvement in efficacy of UPLIZNA compared to placebo (adjusted difference, −2.8, 95% CI, −3.9 to −1.7) as measured by the change in baseline of Myasthenia Gravis Activities of Daily Living (MG-ADL) score in the AChR+ subpopulation through week 52. Among the AChR+ patients in the UPLIZNA group, 72.3% had a ≥3 point improvement in the MG-ADL score, compared to 45.2% in placebo.1

As previously disclosed at the 2024 American Association of Neuromuscular & Electrodiagnostic Medicine Annual Meeting, the trial met its primary endpoint, with a statistically significant change from baseline in MG-ADL score for UPLIZNA (-4.2) compared with placebo (-2.2) (difference: –1.9, p