Fig. 2

Serum KL-6 according to the genotypes of rs4072037. The distributions of serum KL-6 levels according to the genotypes of rs4072037 a in healthy volunteers, b in the patients with T1 or T2 (left panel) and with T3 or T4 (right panel), c in the patients with N0 or N1 (left panel) and with N2 or N3 (right panel), and d in the patients with M0 (left panel) and with M1a or M1b (right panel). The horizontal bars represent the mean values. ***P < 0.001 (Mann-Whitney U test)