A condition in which the major influencing factor is 4-nitroquinoline N-oxide, a tumorigenic derivative of quinoline N-oxide containing a nitro functional group (-NO2) at the 4 position of the quinoline bicyclic structure. Quinoline is a heterocyclic aromatic organic compound with the chemical formula C9H7N. 4-nitroquinoline 1-oxide and its metabolite 4-hydroxyaminoquinoline-1-oxide bind to nucleic acids and cause lesions usually corrected by nucleotide excision repair.