Low, high, and moderate ECM1 mRNA levels were detected in one (A2780), two (Hey and HeyA8), and four (SKOV3, SKOV3ip1, OVCA429 [429], and OVCA433 [433]) cancer cell lines, respectively, whereas no ECM1 mRNA was detected in HOSE cells (Fig. 1a). Here, ECM1 is linked to cancer.