| Phenotype details |
severe developmental delay/intellectual disability; Focal and generalized tonic-clonic seizures (onset at 6 years, treatment-resistant); Generalized hypotonia in the first years, in the second decade hypertonia of the legs; Convergent strabismus, myopia; MRI brain ventriculomegaly, colpocephaly, enlarged cisterna magna, pineal cyst; Frequent falls, progressive ataxia; no microcephaly; Large nose with bulbous nasal tip and low hanging columella; normal philtrum; Wide mouth with square upper lip; Widely spaced teeth; normal chin; synophrys, hypertrichosis; no mesomelic dysplasia; Short and broad feet, bilateral talipes calcaneus, short 1st metatarsal, tapered finger, brachydactyly; Sacral dimple; normal hips and pelvis; horseshoe kidney; Intermittent vomiting; no failure to thrive; Intermittent hyperventilation; Body height >97th percentile between 6 and 12 years. Onset of puberty 11 years. Obesity |