RAD51 and cancer: In oesophageal squamous cell carcinoma (ESCC), patients with high RAD51 expression exhibit significantly reduced survival rates; RAD51 depletion attenuates cancer cell viability by inhibiting cell cycle progression and epithelial‐mesenchymal transition (EMT)‐mediated migration/invasion, whereas RAD51 overexpression promotes cancer progression through the p38/Akt/Snail signalling pathway [9].