This is a global, prospective, multi-center study that is designed to assess the long-term safety and efficacy of OAV101 in patients who participated in an OAV101 clinical trial. The assessments of safety and efficacy in Study COAV101A12308 will continue for 5 years after enrollment in this study.
Participated in an OAV101 clinical trial.
Written informed consent must be obtained before any assessment is performed.
Patient/Parent/legal guardian willing and able to comply with study procedures.
None
Single group
onasemnogene abeparvovec
Biological/VaccineOnasemnogene abeparvovec is a non-replicating recombinant adeno-associated virus serotype 9 containing the human survival motor neuron gene under the control of the ytomegalovirus enhancer/chicken β-actin-hybrid promoter. Onasemnogene abeparvovec is administered as a one-time intravenous (IV) infusion or intrathecal (IT) injection. Dosage determined by participant weight.
Number of participants with treatment-emergent serious adverse events (SAEs)
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
Number of participants with treatment emergent Adverse Events of Special Interest (AESI)
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.
The number of participants demonstrating each developmental milestone according to the Developmental Milestone Checklist
The Developmental Milestone Checklist is a sponsor created list of items using relevant definitions obtained from World Health Organization Multicentre Growth Reference Study (WHO-MGRS). These will be assessed via the milestone checklist, formed of 6 yes/no questions. The developmental milestones are: sitting with support, hands-and-knees crawling, standing with assistance, walking with assistance, standing alone and walking alone. A yes response indicates that the patient reached a particular development milestone.
The number of participants demonstrating maintenance of each developmental milestone according to the Developmental Milestone Checklist
The Developmental Milestone Checklist is a sponsor created list of items using relevant definitions obtained from World Health Organization Multicentre Growth Reference Study (WHO-MGRS). These will be assessed via the milestone checklist, formed of 6 yes/no questions. The developmental milestones are: sitting with support, hands-and-knees crawling, standing with assistance, walking with assistance, standing alone and walking alone. A yes response indicates that the patient reached a particular development milestone.
Change from Baseline in the Hammersmith Functional Motor Scale - Expanded (HFMSE) total score
The HFMSE is a validated SMA specific assessment devised for use in children with SMA to give objective information on motor ability and clinical progression. The HFMSE contains 33 items rated from 0 (unable to perform) to 2 (performs without modification/adaptation/compensation). Total scores range from 0-66. Higher scores indicate higher levels of motor ability.
Change from Baseline in the Revised Upper Limb Module (RULM) total score
The RULM is a validated SMA specific assessment of motor performance in the upper limbs from childhood through adulthood in ambulatory and non-ambulatory individuals with SMA. The scale consists of 19 scorable items: 18 items scored on 0 (unable) to 2 (full achievement) scale, and one item that is scored from 0 (unable) to 1 (able). Total scores range from 0-37 points. Higher scores reflect higher level of motor ability.
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