Table 2. Allele frequencies of the gene polymorphisms in 365 patients treated with chemotherapy.

Gene	Mutation	Wild-type(N/%)	Heterozygous(N/%)	Homozygous(N/%)
ERCC5	D1104H, C/G	102(27.7)	181(49.2)	82(22.3)
ERCC6	M1097V,A/G	329(90.1)	27(7.1)	7(2.5)
	Q1413R,A/G	330(90.4)	35(9.6)	0
	R1213G, A/G	330(90.4)	35(9.6)	0
CCNH	V270A, T/C	307(84.1)	54(14.8)	4(1.1)
MMS19L	G811A, G/A	114(31.2)	182(49.9)	69(18.9)
XPC	Q940K, A/C	145(39.7)	173(47.4)	47(12.8)
	R500W, C/T	151(41.4)	157(43)	56(15.3)
RRM1	C37A, C/A	169(46.3)	170(46.6)	26(7.1)

N = Number of patients.