A Clinical Trial to Learn About the Effects of VHB937 in People With Amyotrophic Lateral Sclerosis (ALS)

The main questions this trial aims to answer in comparing VHB937 to placebo are: * How long will participants live without needing permanent help from a machine to breathe after starting the trial treatment? * What is the change in the participant's ability to perform daily activities? This will be measured using a questionnaire called the amyotrophic lateral sclerosis functional rating scale-revised (ALSFRS-R). * What adverse events are reported during this trial? An adverse event is any sign or symptom that participants have during a trial. Adverse events may or may not be caused by treatments in the trial. The trial doctors will check participants' ALS and general health throughout the trial.