HRAS and lung cancer: PAHs reactive metabolites are known to cause point mutations in RAS proto-oncogenes, such as codon 13 and codon 61 of the HRAS gene (reviewed in [93]). These observations suggest that the AHR/CYP450-dependent DNA adducts formation is a likely pathway to be affected by exposure to hydrocarbons mixture in the development of breast and lung cancers.