Interestingly, antioxidant genes, including SOD1, TXN and PRDX1-5, were upregulated in MTC cases (Figure 7A and Supplementary Figure S5), whereas SOD2 (Figure 7A) and TXNRD1 were upregulated in GPM (p < 0.05, Mann–Whitney test). Here, SOD2 is linked to medullary thyroid gland carcinoma.