<unk>  (or glycogen storage disease Type IIb) is a lysosomal storage disease that was first characterized in 1981 by Dr. M.J.<unk> .<unk>  is an X-linked dominant disorder that predominantly affects cardiac muscle.  It affects both males and females, although males tend to see the majority of mental retardation and muscle weakness.
A mutated gene that codes a protein called LAMP2 causes<unk> . LAMP2 protein is a glycoprotein molecule comprised of a carbohydrate and a protein. It is typically found on the membrane of the lysosome.  LAMP2 is deficient in individuals affected by<unk>  but it is unknown how this deficiency disrupts the function of the lysosome.
Danon disease
Fox-Fordyce disease
Emery-Dreifuss muscular dystrophy
Pickardt syndrome
Cowden syndrome
Loken Senior syndrome
Krabbe disease
McLeod syndrome