Effects of Oral Levosimendan on Respiratory Function in Patients With Amyotrophic Lateral Sclerosis (ALS): Open-Label Extension

This study provides an opportunity for subjects in the REFALS (3119002; NCT03505021) study to continue treatment with oral levosimendan. The study will also provide more information about long-term safety and effectiveness of oral levosimendan in patients with ALS. This is an open-label study, so that all eligible subjects that complete the double-blind REFALS study (48-weeks of treatment) will have the opportunity to receive oral levosimendan treatment. The primary objective, in addition to continuing treatment for subjects enrolled in the REFALS study, is to evaluate long-term safety of oral levosimendan in ALS patients. Another important objective is to explore long-term effectiveness of oral levosimendan in the treatment of patients with ALS. This study is open only to patients taking part in the REFALS study.