For another 11 of the identified genes (including ABCB1, NAP1L5, RARB, FGF2, ZNF177, NFKBIZ, TTC28-AS1, CNRIP1, IL6, OSR2, and C1S), expression levels were significantly decreased in ovarian cancer cases (Figure 4A). Here, C1S is linked to ovarian carcinoma.