| Phenotype details | 
          birth 36w6d, abnormal intrauterine movements, no fetal distress, OFC 0.09; no anemia at birth; acidosis; no raised blood lactate; no respiratory distress; no neonatal hypertonia; no neonatal hypotonia; no abdominal distension, vomiting, or feed intolerance; <24h seizures; EEG burst suppression, reduced background activity; no clonic seizures, generalized tonic-clonic seizures, no myoclonic seizures, no lip-smacking and/or grimacing seizures, response to pyridoxine; no respiratory depression upon treatment with pyridoxine in neonatal period; speech delay; motor delay; learning difficulties; breakthrough seizures with fever; acquired microcephaly; minor dysmorphic features |