FASLG and metastatic malignant neoplasm in the lymph nodes: For those ≥60 years, FasL −844T/C showed significant associations with stage (crude OR = 2.119, 95 % CI 1.301–3.451, P = 0.003; adjust OR by smoking and sex = 2.228, 95 % CI 1.351–3.675, P = 0.002) and lymph node metastasis (crude OR = 2.051, 95 % CI 1.252–3.361, P = 0.004; adjust OR by smoking and sex = 2.123, 95 % CI = 1.285–3.508, P = 0.003).