AXL and ovarian carcinoma: For example, Axl and its ligand Growth arrest specific gene 6 (Gas6) have been described to be frequently overexpressed in epithelial ovarian cancer, especially in advanced high-grade serous and endometrioid metastatic ovarian cancer [10–12], and Axl expression is correlated with tumor metastasis, chemoresistance and poor prognosis [11–14].