| Phenotype details |
30m-died; born at term, uneventful twin pregnancy (dizygotic twins), cesarean section;, weight 2450 g, length 48 cm, OFC 33 cm; no dysmorphism, shortly after birth muscular hypotonia, poor feeding behavior; <1y-developmental delay, failure to thrive; sensorineural deafness; MRI brain enlarged ventricles, megacisterna magna; severe isolated complex I deficiency (0.16 lowest control); muscle wasting, dyskinetic movement disorder, never achieved developmental milestones, recurrent respiratory infections |