This clinical trial is focused on studying a condition called Amyotrophic Lateral Sclerosis (ALS), specifically in patients who have a genetic change known as Fused in Sarcoma mutations (FUS-ALS). ALS is a disease that affects the nerve cells in the brain and spinal cord, leading to a loss of muscle control. The study is testing a treatment called ION363, which is an injection designed to target these specific genetic changes. The purpose of the study is to evaluate how effective and safe ION363 is for people with FUS-ALS.
Participants in the study will receive either the ION363 treatment or a placebo, which is a substance with no active medication. The treatment is given through a method called intrathecal use, meaning it is injected into the space around the spinal cord. The study will monitor participants over time to see how the treatment affects their ability to function and survive. This includes looking at changes in their physical abilities and overall quality of life.
The study will also measure various biological markers, such as levels of certain proteins in the blood and spinal fluid, to understand the treatment’s impact on the disease. The trial is expected to continue for several years, allowing researchers to gather comprehensive data on the long-term effects of ION363 in treating FUS-ALS. Participants will be closely monitored throughout the study to ensure their safety and to collect detailed information on how the treatment affects their condition.



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