In 80% of NSCLC patients with N0, the following proteins were detected: Olfactory receptor 9G9, homeobox protein DBX1, olfactory receptor 52R1, killer cell immunoglobulin-like receptor 2DL1, gamma-interferon-inducible lysosomal thiol reductase, and neurexophilin-3 were detected. Here, DBX1 is linked to non-small cell lung carcinoma.