| Phenotype details |
pregnancy marked by breakthrough bleeding during first trimester, prenatal ultrasound examination normal; birth 39w, normal measurements; neonatal period uneventful; sit-9m, walk-18m initially difficult with frequent falls; expressive language delayed; hyperopia, multiple serous otitis; 7y-WISC low scores intellectual quotient (50-63); 7y-normal growth height, weight and head circumference; able to write name, recognize alphabet letters; mild joint laxity, no dysmorphic features, no motor deficiency; normal serum CK level; ECG normal, cardiac ultrasound normal, MRI brain normal |