Concurrent Radiotherapy Following Induction Chemoimmunotherapy for Locally Advanced Esophageal Cancer

"All patients will first receive 2 cycles of induction chemoimmunotherapy, followed by radiotherapy. During radiotherapy, 2 concurrent cycles of chemoimmunotherapy will be administered. Afterward, maintenance immunotherapy will continue for up to one year.~Chemotherapy regimen: Paclitaxel: 135 mg/m², Day 1, every 3 weeks (Q3W); Carboplatin: area under the curve (AUC) = 5, intravenous infusion over more than 30 minutes, Day 2, Q3W; Alternatively, Nedaplatin: 75 mg/m², Day 2, Q3W.~Immunotherapy regimen: programmed death-1 (PD-1) inhibitor (e.g., Camrelizumab): Day 0, intravenous infusion, Q3W; Continued until disease progression (PD) or unacceptable toxicity, for a maximum duration of one year.~Radiotherapy: Prescribed dose: 95% of the planning target volume (PTV) and planning target volume for nodal disease (PTV-nd) should receive 50-50.4 Gy over 25-28 fractions; Fraction dose range: 1.8-2.0 Gy per fraction, 5 days per week; External beam radiotherapy to the chest."