H19 and ovarian cancer: lncRNAs can act as ceRNA sponges for miRNAs to regulate the downstream genes to regulate physiological and pathological processes.29 In human placental trophoblast cell, H19 can produce miR‐675 that targets Nodal Modulator 1, and trophoblast cell proliferation was decreased after downexpression of H19.30 In ovarian cancer cell lines, SKOV‐3 and OVCAR3 cells, H19 could directly bind to miR‐370‐3p and effectively act as its ceRNA.