ABCG2 and cancer: There was no association between ABCG2 mRNA in blood of NSCLC patients and the age at diagnosis (p = 0.1995, Figure S5A), histological type of the cancer (p = 0.2638, Figure S5B), grade of histological malignancy (p = 0.6334, Figure S5C), cancer stage (p = 0.8486, Figure S5D), gender (p = 0.8433, Figure S5E), and cigarette smoking (p = 0.3604, Figure S5F).