NCT06339619 2026-06-04Combination Immunotherapy of Adebrelimab With Apatinib and Tegafur, Gimeracil and Oteracil Potassium Capsules for Immune Rechallenge Therapy in Esophageal Squamous Cell CarcinomaSun Yat-Sen Memorial Hospital of Sun Yat-Sen UniversityPhase 2 Recruiting32 enrolled