TLR1 and non-small cell lung carcinoma: About that, compared to control subjects, significant changes in the expression of TLR2, 3, 4, 7, 8, and 9 were found in peripheral blood cells and in lung tissues of NSCLC patients [16–20], while the overexpression of TLR1, 2, 4, and 9 was detected in the serum of NSCLC patients [21].