TLR4 and cancer: The results showed that the TLR4 expression level in cancer tissues is inversely associated with serums sTLR4 level in patients with TNM stage I and II NSCLC (r = −0.485, P = 0.003); nevertheless, this correlation is not obvious in the analysis among all stage patients (r = −0.186, P = 0.188) and in stage III patients (r = 0.080, P = 0.805).