We found that the SULF1 promoter containing rs2623047 G exhibited an increased luciferase activity, compared with the rs2623047 A in SKOV-3 and HeLa cell lines, but only SKOV-3 ovarian cancer cell lines showed a statistically significant difference (P = 0.028), whereas HeLa cells showed a marginal difference with a P value of 0.058 (Figure 1D). Here, SULF1 is linked to ovarian cancer.