MFN2 and carcinoma: However, if we consider the degree of severity of the tumor, only within the oncocytic phenotype, interestingly we observe that Mfn2 and Drp1 are significantly more abundant in carcinomas compared to the benign counterparts’ adenomas (4.5±0.2 vs. 3.4±0.4, p = 0.012 for Mfn2 and 5.1±0.2 vs. 4.0±0.5, p = 0.038 for Drp1 (Fig 2C).