More generally, homozygous Lmna knockout mice showed severely retarded postnatal growth with the appearance of muscular dystrophy and DCM and died by about 8 weeks of age mimicking a phenotype of Emery–Dreifuss muscular dystrophy, DCM, and progeria (Sullivan et al., 1999; Nikolova et al., 2004). The gene discussed is LMNA; the disease is familial dilated cardiomyopathy.