LMNB1 and limb-girdle muscular dystrophy: Lamins are encoded by LMNA (type A, lamin-A and -C) and LMNB (type B, lamin-B1 and -B2), and mutations in lamin-A/C are associated with various human diseases, such as Emery–Dreifuss muscular dystrophy [9], limb-girdle muscular dystrophy [10], and Hutchinson–Gilford progeria syndrome [11], including cardiomyopathy [12] and osteoporosis [13].