On Immunohistochemistry, GOC shows strong positivity for bcl-2 in basal, supra basal celllayers and CK 7, 8, 19 suggesting its odontogenic origin.6 Differential diagnosis includes lateral periodontal cyst andcentral mucoepidermoid carcinoma (CMEC). The gene discussed is KRT7; the disease is mucoepidermoid carcinoma.