Currently, mutations in 13 genes, including NEB (13), ACTA1 (14), TPM3 (15), TPM2 (15), RYR1 (16), TNNT1 (17), CFL2 (18), KBTBD13 (19), KLHL40 (20), KLHL41 (21), LMOD3 (22), MYPD (23), and RYR3 (6), have been shown to cause NM (Table 3). The gene discussed is CFL2; the disease is nemaline myopathy.