To date, three EWAS of lung cancer risk using blood cells were conducted in populations of European ancestry (largest sample size n = 552 cases).95–97 All three studies found cg05575921 in AHRR, cg03636183 in F2RL3 and cg06126421 in 6p21.33 to be associated with lung cancer risk, after adjusting for smoking status and pack-years. Here, AHRR is linked to lung cancer.