Clinical data from family patient number/sex/head circumference at birth/current age
| Age at first VP-shunt | Number of revisions of VP-shunt | Age at first seizure | Current cognitive function | Current motor function | |
|---|---|---|---|---|---|
| I-1/Female/46 cm/19 years | 5 days | 2 | 3 years | Mild–moderate mental retardation | Unsteady gait |
| I-2/Male/46 cm/18 years | Within first week of life | 7 | 6–8 weeks | No verbal communication. Severe mental retardation | Able to sit |
| I-3/Female/39.5 cm/16 years | 1 day | 1 | 3 years | Age-appropriate. Learning disability | Age-appropriate |
| I-4/Female/ 49 cm/2 years | 1 day | 5 | 7 months | Developmental quotient approximately 75 | Crawls. No independent walking yet |
VP; ventriculo-peritoneal.