EGFR and lung carcinoma: In association of miRNAs expression with the immunohistochemical expression of EGFR, we observed positive association between expression of miR-133b and let-7a and reactivity of EGFR. Let-7a has been already implicated in tumourigenesis and similarly as in MECs, ACCCs, and poorly differentiated carcinoma of salivary glands it has been shown to be reduced in lung cancer.