Numerous studies have since tried to isolate CSCs from RCC 10, 11, 12, 13, 14, with CD105, ALDH1, OCT4, CD133, and CXCR4 reported as markers of cancer stem‐like cells from RCC 5, 11, 15, 16, 17, 18, 19. The gene discussed is CXCR4; the disease is cancer.