TTN and early-onset myopathy with fatal cardiomyopathy: TTN mutations have been known to cause other neuromuscular and cardiac disorders, among them dilated cardiomyopathy type 1G [9] and neuromuscular disorders such as tibial muscular dystrophy (TMD), or Udd myopathy [10], limb–girdle muscular dystrophy type 2J (LGMD2J) [11,12], and autosomal recessive early-onset myopathy with fatal cardiomyopathy (EOMFC) [13].