Table 3. Haplotype frequency of the TGF β1 gene polymorphisms in SSS patients and controls.

Haplotype
		Overall	SSS	Controls
-509	+869	(N = 247)	(N = 110)	(N = 137)	OR	P*
C	T	0.442	0.4282	0.4533	0.903	0.5761
T	C	0.426	0.4827	0.3803	1.521	0.0221
T	T	0.105	0.0627	0.1380	0.418	0.0066
C	C	0.028	0.0263	0.0285	0.924	0.8889

* There results were confirmed through permutation test. TT is the only significant candidate haplotype (P = 0.0226).