SULF1 and ovarian cancer: We had previously reported that HSulf-1 (also known as Sulfatase 1, Sulf-1, KIAA1077 and Extracellular Sulfatase Sulf-1 [6] is downregulated in a majority of ovarian cancer cell lines [6] (Figure S1) and tumors including serous, endometrioid and clear cell tumors of the ovary [10].