Myopathies, NemalineCofilin 2Muscle WeaknessMuscular DiseasesTropomyosinMuscle, SkeletalMuscle ProteinsMuscle Fibers, Slow-TwitchRespiratory ParalysisMuscle Fibers, SkeletalMyopathies, Structural, CongenitalRespiratory InsufficiencyChromosomes, Human, Pair 15PedigreeMutationDistal MyopathiesPhenotypeMutation, MissenseBiopsyMuscle ContractionMitochondrial MyopathiesCardiomyopathy, DilatedActinsNeuromuscular Diseases