Additionally, we have found positive association between miR-133b, miR-140, miR-140-3p, and let-7a and CNV of EGFR. miR-140 is believed to be cartilage specific miRNA; however, it appears to be important in certain subtypes of salivary gland tumours and for differential diagnosis of histological subtypes of salivary gland tumours. The gene discussed is EGFR; the disease is tumor of salivary gland.