| Phenotype details |
see paper; ..., 4m-developmental delay; EEG no epileptic discharge (10 month and 5y); OFC 35.0 cm(+1.1 SD) at birth, 43.3 cm(−1.4 SD) at 9 month, 46 cm(−2.4 SD) at 2y; no head control, no words; profound intelletucal disability, hypotonia with ankle clonus; myoclonic movements extremities/lip, ocular convergence spasm, oculogyric crisis; no ataxia; MRI brain 12m-normal; 2y-progressive cerebellar atrophy; elder brother mild intellectual disability |