Decreased miniature endplate potentials, Decreased muscle mass, Decreased size of nerve terminals, Delayed gross motor development, Dental malocclusion, Diplopia, Drowsiness, Dysarthria, Dysphagia, EMG: decremental response of compound muscle action potential to repetitive nerve stimulation, EMG: myopathic abnormalities, Easy fatigability, Exertional dyspnea, Facial palsy, Fatigable weakness, Fatigable weakness of neck muscles, Fatigable weakness of respiratory muscles, Feeding difficulties, Feeding difficulties in infancy, Generalized hypotonia, Generalized hypotonia due to defect at the neuromuscular junction, Gowers sign, High palate, Hip flexor weakness, Hypotonia, Limb muscle weakness, Long face, Mandibular prognathia, Motor delay, Muscle spasm, Muscle weakness, Myopathy, Neck flexor weakness, Neck muscle weakness, Neonatal hypotonia, Ophthalmoparesis, Ophthalmoplegia, Orthopnea, Poor suck, Ptosis, Reduced tendon reflexes, Reduced vital capacity, Respiratory distress, Respiratory insufficiency, Respiratory insufficiency due to muscle weakness, Restrictive ventilatory defect, Scoliosis, Shoulder girdle muscle weakness, Skeletal muscle atrophy, Strabismus, Sudden episodic apnea, Thoracic kyphoscoliosis, Triceps weakness, Type 1 muscle fiber predominance, Type 2 muscle fiber atrophy, Upper limb muscle weakness, Weak cry, Weakness of long finger extensor muscles, Weakness of the intrinsic hand muscles

decreased muscle weight, impaired skeletal muscle contractility, increased physiological sensitivity to xenobiotic, increased pulmonary respiratory rate, premature death, skeletal muscle fiber degeneration, slow postnatal weight gain, weakness