The expression of c‐Kit, a biomarker of cancer stem cells, in ovarian cancer, non‐small cell lung carcinoma, prostate cancer, osteosarcoma, neuroblastoma, and endometrial cancer is correlated with poor prognosis [22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32]. This evidence concerns the gene KIT and ovarian cancer.