MERIDIAN: A Study to Evaluate the Efficacy and Safety of Pegcetacoplan in Adults With Amyotrophic Lateral Sclerosis (ALS)

A Phase 2, Randomized, Double-Blind, Placebo-Controlled, Multicenter Study to Evaluate the Efficacy and Safety of Pegcetacoplan in Subjects With Amyotrophic Lateral Sclerosis (ALS)

This is a 24-month, Phase 2, multicenter, randomized, double-blind, placebo-controlled study to evaluate the efficacy and safety of pegcetacoplan in subjects with amyotrophic lateral sclerosis (ALS)

Inclusion Criteria:

• At least 18 years of age
• Sporadic ALS diagnosed as definite, probable, or laboratory-supported probable as defined by the revised El Escorial criteria
• Slow vital capacity (SVC) ≥60% of the predicted value at screening
• Onset of ALS symptoms within 72 weeks (18 months) prior to screening
• Total ALSFRS-R score of ≥30 at screening
• Have vaccination within 5 years against Streptococcus pneumoniae, Neisseria meningitidis (types A, C, W, Y, and B), and Haemophilus influenzae (type B) or agree to receive vaccination

Exclusion Criteria:

• Confirmed or suspected other causes of neuromuscular weakness
• Diagnosed with another neurodegenerative disease (examples include Parkinson's disease and Huntington's disease)
• Significant pulmonary disorder not attributed to ALS (eg, chronic obstructive pulmonary disease, pulmonary fibrosis, cystic fibrosis, pulmonary arterial hypertension)
• If taking riluzole, participant must be on a stable dose for 30 days prior to the start of the screening period. Use of riluzole is not required for participation.
• If taking edaravone, participant must be on a stable dose for 60 days prior to the start of the screening period. Use of edaravone is not required for participation.
• Participation in any other investigational drug trial or exposure to other investigational agent, device, or procedure within 30 days or within 5-half lives of the treatment (whichever is longer) prior to the start of the screening period or during study participation
• Use of any other complement inhibitor within 30 days or within 5-half lives of the treatment (whichever is longer) prior to the start of the screening period or during study participation