Distal muscle weakness, Dysarthria, Dysphagia, EMG: decremental response of compound muscle action potential to repetitive nerve stimulation, Easy fatigability, Exertional dyspnea, Facial palsy, Fatigable weakness, Feeding difficulties in infancy, Frequent falls, Generalized hypotonia, Generalized muscle weakness, Global developmental delay, Hand muscle weakness, High palate, Hyperlordosis, Hyporeflexia, Hypotonia, Hypoventilation, Impaired mastication, Intellectual disability, Limb muscle weakness, Limited extraocular movements, Limited wrist extension, Mandibular prognathia, Muscle weakness, Myopathy, Neck muscle weakness, Neonatal respiratory distress, Ophthalmoparesis, Poor head control, Poor suck, Prolonged miniature endplate currents, Proximal muscle weakness, Ptosis, Pulmonary arterial hypertension, Recurrent lower respiratory tract infections, Respiratory distress, Respiratory insufficiency, Respiratory insufficiency due to muscle weakness, Right ventricular hypertrophy, Scapular winging, Scoliosis, Skeletal muscle atrophy, Sleep apnea, Slow pupillary light response, Talipes equinovarus, Triangular mouth, Type 1 muscle fiber predominance, Type 2 muscle fiber atrophy, Unfavorable response of muscle weakness to acetylcholine esterase inhibitors, Waddling gait, Weak cry