The central association marker, DPP4 positively correlated with ACE2 (normal: R 0.308; cancers: 0.382), TMPRSS2 (normal: R 0.524; cancers: 0.382) and FURIN (normal: R 0.498; cancers: R 0.246) in both datasets (Figure 3). Here, TMPRSS2 is linked to cancer.