Table 1.

Information of Single-Nucleotide Polymorphisms Analyzed in This Study

Chr.	Gene	SNP ID	Region	Polymorphism
7p12	EGFR	rs2072454	Exon3	C/T
		rs2227983	Exon9	A/G (Thr/Met)
		rs17337023	Exon12	A/T
		rs1050171	Exon15	A/G
		rs2293347	Exon19	A/G
		rs884225	3′UTR	A/G
4q25	EGF	rs11569017	Exon15	A/T (Val/Asp)
		rs4444903	5′UTR	A/G

The SNP information is based on the database http://www.ncbi.nlm.nih.gov/SNP/

The mutation for genotypes on extrons except for rs22227983 and rs11569017 were synonymous mutations.

SNP, single-nucleotide polymorphism; EGF, epidermal growth factor; EGFR, epidermal growth factor receptor.