Three SNPs in ERCC1 (rs11615, rs3212986, and rs2298881) and two SNPs in XPF (rs2276465 and rs6498486) were extracted using Tiangen DNA kit (Tiangen Biotech, Beijing, China) according to the manufacturer's instructions.
We investigated the association between polymorphisms in excision repair cross-complementation group 1 (ERCC1) (rs3212986, rs2298881 and rs11615) and xeroderma pigmentosum-complementation group F (XPF) (rs2276466 and rs6498486) and risk of colorectal cancer.
Genotyping of ERCC1 (rs2298881, rs3212986, and rs11615) and XPF (rs2276465, rs6498486, and rs2276466) was performed in a 384-well plate format on the MassARRAY(®) platform.