Characteristics (n = 92)

Age (years), mean ± SD

41.2 ± 15.6

Sex (male), n (%)

82 (54.4)

Age of onset (years) mean ± SD

22.3 ± 13.1

Duration of the disease (years) mean ± SD

18.8 ± 11.6

Family History (+/−)

52/40

Mode of Inheritance

Autosomal dominant (n/%)

14(28)

Autosomal recessive (n/%)

35 (67)

X-Linked (n/%)

3 (5)