According to a Japanese study from 2007<unk>  affects about 1 in 200,000 people. A 2009 study concerning the prevalence of genetic muscle disease in Northern England estimated the prevalence of<unk>  to be at 0.77:100,000. Together with the UCMD it is believed to be underdiagnosed. Both conditions have been described in individuals from a variety of ethnic backgrounds.
Bethlem myopathy
Brody myopathy
Nemaline myopathy
Muscular dystrophy
Centronuclear myopathy
Hereditary inclusion body myopathy
Limb–girdle muscular dystrophy
Duchenne muscular dystrophy