In a recent GWA analysis of lung tumor incidence, we reproduced the pulmonary adenoma susceptibility 1 (Pas1) locus identified in previous linkage studies and further narrowed this QTL to a region of less than 0.5 Mb in which at least two genes, Kras2 and Casc1, are strong candidates [4]. The gene discussed is DNAI7; the disease is adenoma.