KRT14 and non-small cell lung carcinoma: The gene with the highest difference between aggressive and responsive tumour was the KRT14 (Keratin 14) (93-fold) where it recently was shown that the presence of Keratin14 positive progenitor airway epithelial cells in NSCLC predicted a poor prognosis, and this predictive value was strongest in smokers, in which it also correlated with metastasis [84].