AHRR and lung cancer: Recently, using a study conducted within the NOWAC cohort as discovery data set and studies within the Australian MCCS cohort, the Swedish NSHDS and the EPIC‐Heidelberg cohort as replication sets, we observed that smoking‐associated DNA methylation alterations in CpGs in the AHRR and F2RL3 genes are associated with lung cancer risk13; the association with alterations in DNA methylation in F2RL3 was also reported in a recent German study14.