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

Prior treatment

• Use of other investigational drugs within 5 half-lives of screening, or within 30 days (e.g., small molecules) / or until the expected pharmacodynamic effect has returned to baseline (e.g., biologics), whichever is longer; or longer if required by local regulations.
• Women of child-bearing potential, defined as all women physiologically capable of becoming pregnant, unless they are using highly effective methods of contraception while taking study treatment and for 24 weeks after stopping study medication.
• Taking any prohibited medications

Other illness

• History or current diagnosis of cardiac conditions or ECG abnormalities indicating significant risk of safety for participants in the study.
• Clinical evidence of liver or renal disease/injury.
• Presence of unstable psychiatric disease, cognitive impairment, neurological disease other than ALS, dementia or substance abuse that would impair ability of the participant to provide informed consent, in the investigator's opinion.
• Presence of cancer, HIV, Hep B, Hep C, tuberculosis, uncontrolled diabetes
• History of active severe respiratory disease, including Chronic Obstructive Pulmonary Disease, interstitial lung disease or pulmonary fibrosis.

Lab values

• Laboratory evidence of hematological abnormalities

Other

• Participants that reported 'yes' on any suicidal ideation section except for the "Non-Suicidal Self-Injurious Behavior" in the past 2 years as per C-SSRS.

• are 18 years of age or older
• male or female, if of childbearing potential, strict contraception required
• have ALS confirmed by the trial doctors using different tests.
• have mild symptoms of ALS as measured by the ALSFRS-R questionnaire (total score \>=30).
• have had symptoms of ALS (weakness) within 24 months of taking part in this trial.
• have not received treatment for ALS or are currently on a stable dose of an approved treatment for ALS.
• have the ability to slowly exhale a volume of air at least 60% of what is expected for the participant's sex, height and age.