On the other hand, in a more recent study published by Liu SY that also investigated XRCC1 Arg194Trp polymorphism and its association with susceptibility to thyroid cancer, the C allele of XRCC1 had an 18% significantly decreased risk of thyroid cancer in Chinese people, but without any association among Caucasians [44]. Here, XRCC1 is linked to thyroid gland carcinoma.