ACTA1 and nemaline myopathy: The genes encoding for nebulin (NEB) and a-actin (ACTA1) are the most common genetic cause of nemaline myopathies, although at least 11 other genes have been related with this disease (TPM3, TPM2, MYPN, KLHL40, KLHL41, LMOD3, CFL2, TNNT1, TNNT3, MYO18B, KBTBD13) [12,13].