• If alive, current status
• Age at Follow-up with family (months)
• Date of follow-up with family
• Summary of follow-up
• Birth weight value
• Head circumference measurement
• Seizure indicator
• Sibling gender type
• Muscle biopsy performed indicator
• Adopted indicator
• Maternal delivery age value
• Milestone lost age value
• Education level maternal USA type
• Gene name
• Birth length value
• Birth head circumference value
• Weight percentile value
• Height percentile value
• Gene mutation type text
• Visit date