ESR1 and cancer: Testicular cancer• Alpha-fetoprotein (AFP)• Lactate dehydrogenase (LDH)• Beta-human chorionic gonadotropin (beta-hCG)•XIST gene expression• miRNAs    ∘ miR-371-3    ∘ miR-302/367Ovarian cancer• CA-125• Inhibin• AFP• Beta-hCG• HE4• LDH• CEA• Cytokeratin 7 (CK7)PAX8• Estrogen receptor• Genetic mutational markers    ∘BRCA1    ∘BRCA2miRNAs