Distal lower limb amyotrophy, Distal lower limb muscle weakness, Distal upper limb amyotrophy, Distal upper limb muscle weakness, Dyspnea, Elevated circulating creatine kinase concentration, Exercise-induced myalgia, Fatiguable weakness of proximal limb muscles, Finger flexor weakness, Foot dorsiflexor weakness, Gait imbalance, Hip flexor weakness, Hyporeflexia, Hyporeflexia of lower limbs, Inability to walk, Intrinsic hand muscle atrophy, Left atrial enlargement, Limited knee flexion, Mildly elevated creatine kinase, Mitral regurgitation, Muscle fiber cytoplasmatic inclusion bodies, Muscle fiber splitting, Muscle weakness, Myofibrillar myopathy, Myopathy, Proximal muscle weakness, Proximal muscle weakness in lower limbs, Respiratory insufficiency, Skeletal muscle atrophy, Waddling gait, Weakness of facial musculature

abnormal sarcomere morphology, abnormal skeletal muscle morphology, abnormal soleus morphology, abnormal somite shape, abnormal tibialis anterior morphology, abnormal vitelline vasculature morphology, cardiovascular system phenotype, decreased fetal size, decreased food intake, decreased grip strength, decreased locomotor activity, decreased respiratory quotient, decreased skeletal muscle fiber number, decreased skeletal muscle mass, decreased vertical activity, embryonic lethality prior to tooth bud stage, hyporesponsive to tactile stimuli, increased variability of skeletal muscle fiber size, muscle phenotype, neonatal lethality, complete penetrance, preweaning lethality, complete penetrance, skeletal muscle fiber degeneration