Table 5. GSTT1, GSTM1, and NQO1 genotype distribution in responders (complete + partial) and nonresponders.

^* Statistically significant susceptible genotype

Gene polymorphism	Responders (n = 105)	Nonresponders (n = 95)	p-Value	OR (95% CI)
GSTT1 genotype
Present	48 (45.7%)	62 (65.3%)	-	Reference
Null	57 (54.3%)	33 (34.7%)	0.0068*	0.45 (0.25-0.79)
GSTM1 genotype
Present	54 (51.4%)	59 (62.1%)	-	Reference
Null	51 (48.6%)	36 (37.9%)	0.1536	0.65 (0.37-1.14)
NQO1 (CT + TT)
CC (wild type)	84 (80.0%)	80 (84.2%)	-	Reference
CT + TT	21 (20.0%)	15 (15.8%)	0.4665	0.75 (0.36-1.56)
NQO1 allele frequency
C	184 (88.0%)	172 (90.5%)	-	Reference
T	26 (12.0%)	18 (9.5%)	0.4243	0.74 (0.39-1.40)