Table 1.

Clinical and demographic characteristics of the sALS patients and the controls.

Variable	ALS	Healthy Controls	p
	(n = 9)	(n = 3)
Age at onset	63 (42–77)	N.A.
Age at skin biopsy	64 (47–79)	64 (56–72)	0.85 *
Sex (M/F)	3/6	1/2	0.90 **
ΔFS	0.52 (0.39–1.11)
Site of onset (n,%)
Spinal	6 (66.6)
Bulbar	3 (33.4)

Data are expressed as medians with interquartile ranges (IQR). * Mann-Whitney Rank Sum Test; ** chi-square.