The association between XPC Lys939Gln gene polymorphism and urinary bladder cancer susceptibility: a systematic review and meta-analysis

Table 1 Main characteristics of these studies on the associations between XPC Lys939Gln polymorphism and bladder cancer risk

First author	Year	Country	Ethnicity	Study type	Genotype method	Sample size		P_HWE
						Case	Control
Sanyal et al.	2004	Sweden	Caucasian	PB	PCR-RFLP	309	246	0.294
Sak et al.	2005	England	Caucasian	HB	TaqMan	532	561	0.191
Garcia-Closas et al.	2006	Spain	Caucasian	HB	TaqMan	1137	1138	0.470
Wu et al.	2006	USA	Caucasian	HB	TaqMan	606	596	0.744
Zhu et al.	2007	USA	Caucasian	HB	Taqman	550	554	0.668
Fontana et al.	2008	French	Caucasian	HB	TaqMan	51	45	0.456
de Verdier et al.	2010	Sweden	Caucasian	PB	PCR-RFLP	305	328	0.147
Gangwar et al.	2010	India	Asian	HB	PCR-RFLP	208	245	0.054
Rouissi et al.¹	2011	Tunisia	African	HB	PCR-RFLP	193	193	0.537
Rouissi et al.²	2011	Tunisia	African	HB	PCR-RFLP	125	125	0.449
Mittal et al.	2012	India	Asian	PB	PCR-RFLP	212	250	0.073
Liu et al.	2012	China	Asian	HB	PCR-RFLP	600	609	0.824

PB Population-Based Study, HB Hospital-Based Study, P_HWE P value of Hardy–Weinberg equilibrium. PCR-RFLP Polymorphism Chain Reaction- Restriction Fragment Length Polymorphism. 1,2 Different studies.

ISSN: 1746-1596