LAMA2 and congenital muscular dystrophy: The clinical spectrum ranges from a severe, early-onset LAMA2-related congenital muscular dystrophy (LAMA2-CMD, OMIM 607,855) to a mild, childhood-onset autosomal recessive limb-girdle muscular dystrophy-23 (LGMDR23, OMIM 618,138) [2, 3].