In the unselected cohort of examined ovarian cancers, FOLR1 mRNA expression with a median value of 9.14 (arbitrary units normalized to TBP) was significantly stronger than in borderline tumours (median value: 1.88; p = 0.01) and in healthy controls (median value: 0.49; p < 0.0001) (Fig. 1a). Here, FOLR1 is linked to ovarian cancer.