An SAE is defined as any adverse event \[appearance of (or worsening of any pre-existing)\] undesirable sign(s), symptom(s), or medical conditions(s) which meets any one of the following criteria: * fatal * life-threatening * results in persistent or significant disability/incapacity * constitutes a congenital anomaly/birth defect, fetal death or congenital abnormality or birth defect * requires in-patient hospitalization or prolongation of existing hospitalization, unless hospitalization is for routine treatment or monitoring of the studied indication, not associated with any deterioration in condition * is medically significant, e.g. defined as an event that jeopardizes the participant or may require medical or surgical intervention to prevent one of the outcomes listed above

The following are important identified and important potential risks (AESI) associated with OAV101: Hepatotoxicity, Transient Thrombocytopenia, Cardiac adverse events, Sensory abnormalities suggestive of ganglionopathy, and Thrombotic microangiopathy. These will be assessed by the investigator.