Table 3.

Circadian clock gene expression and polymorphism in vitiligo patients and control groups

Circadian clock gene expression and polymorphism		Patient, N = 50 N (%)	Control, N = 50 N (%)	X2	P-value
Genotyping	T/T	4 (8%)	16 (32%)	9	0.003
	T/C	46 (92%)	34 (68%)
RQ of circadian gene	Mean ± SD	3.72 ± 3.50	1.036 ± 0.286	Z = 5.51	< 0.0001
	Median (25th–75th)	2.097 (1.21–5.69)	1 (0.87–1.034)

Z (Mann-Whitney test)