Comparing Hypofractionated Concurrent Chemoradiotherapy Versus Conventional Fractionated Concurrent Chemoradiotherapy Following Induction Chemo-immunotherapy in Patients With Unresectable Locally Advanced Esophageal Squamous Cell Carcinoma
Led by Sun Yat-sen University · Updated on 2025-11-17
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What this Trial Is About
Researchers are evaluating two types of chemoradiotherapy to treat patients with unresectable locally advanced esophageal squamous cell carcinoma. This prospective, open-label, randomized phase II clinical trial compares the effectiveness and side effects of hypofractionated concurrent chemoradiotherapy versus conventional fractionated concurrent chemoradiotherapy after patients receive induction chemoimmunotherapy. The study aims to improve treatment outcomes for this challenging condition.
All participants first receive two cycles of induction therapy combining albumin-bound paclitaxel, cisplatin, and toripalimab. Then, they are randomly assigned to one of two groups: one group receives hypofractionated radiotherapy once daily, five days a week, followed by a radiotherapy boost if certain conditions are met; the other group receives conventional fractionated radiotherapy with a total dose delivered in smaller daily fractions. Concurrent chemotherapy with oral capecitabine is also given during radiotherapy.
During the study, patients will have tumor response and cardiopulmonary function assessments, including endoscopy and imaging, to guide treatment. Follow-up visits will monitor progression-free survival, overall survival, response rates, and treatment-related toxicities for up to two years. Safety and efficacy are carefully evaluated through clinical exams, laboratory tests, and imaging. Participation may last several years with regular visits for monitoring and outcome measurement.
CONDITIONS
Brief Title
Hypofractionated vs. Conventional Chemoradiotherapy After Induction Chemo-immunotherapy for Unresectable Esophageal Squamous Cell Carcinoma
Who Can Participate
Age: 18Years - 80Years
All Genders
Eligibility Criteria
You may qualify if you...
Pathologically or cytologically confirmed diagnosis of esophageal squamous cell carcinoma
Evaluated as unresectable locally advanced esophageal squamous cell carcinoma with staging II-IVB (stage IVB limited to celiac or supraclavicular lymph node metastasis)
Male or female aged 18 to 80 years
Eligible for oral drug therapy
No prior chemotherapy, radiotherapy, surgery, targeted therapy, or immunotherapy
Must provide adequate unstained, archived tumor tissue samples
Expected survival of at least 12 weeks
Eastern Cooperative Oncology Group (ECOG) performance status score of 0 or 1
Postmenopausal women or women with a negative pregnancy test within 14 days before study drug administration
Women must not be breastfeeding
Organ and bone marrow function meeting specified criteria including FEV1 ≥1000 mL, neutrophils ≥1.5 x10^9/L, platelets ≥100 x10^9/L, hemoglobin ≥90 g/L, eGFR ≥50 mL/min, bilirubin ≤1.5 times ULN, ALT and AST ≤2.5 times ULN
Signed informed consent before participation
You will not qualify if you...
Participation in another clinical trial unless observational
Use of immunosuppressive drugs within 28 days before first Toripalimab infusion, excluding low-dose corticosteroids
Prior use of anti-PD-1 or anti-PD-L1 antibodies
Major surgery within 4 weeks before study entry (excluding vascular access)
Autoimmune disease history within past 2 years
Active or history of inflammatory bowel disease such as Crohn's or ulcerative colitis
Primary immunodeficiency history
History of organ transplantation requiring immunosuppression
Uncontrolled infections or serious heart, liver, or bleeding disorders
Recent live attenuated vaccine within 30 days before or after Toripalimab
Another primary cancer within 5 years except certain skin or cervical cancers
Pregnancy, breastfeeding, or not using effective contraception
Development of distant metastasis excluding celiac or supraclavicular lymph nodes after induction
Local regional progression preventing definitive chemoradiotherapy
Performance status score of 2 to 4
Organ and bone marrow dysfunction including FEV1 <1000 mL, neutrophils <1.5 x10^9/L, platelets <100 x10^9/L, hemoglobin <90 g/L, creatinine clearance <50 mL/min, bilirubin >1.5 times ULN, ALT or AST >2.5 times ULN
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Your Study Journey
Screening
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Induction Chemoimmunotherapy
Duration - Approximately 6 weeks
Participants receive two cycles of induction therapy with albumin-bound paclitaxel and cisplatin combined with toripalimab.
Multiple visits during two treatment cycles
Treatment
Duration - Approximately 5 to 9 weeks depending on treatment group
Participants are randomly assigned to receive either hypofractionated concurrent chemoradiotherapy or conventional fractionated concurrent chemoradiotherapy, both combined with concurrent chemotherapy (oral capecitabine).
Daily visits, five days per week during radiotherapy; additional visits for chemotherapy administration
Follow-up
Duration - Up to 2 years
Participants undergo regular follow-up visits to assess treatment efficacy and safety after completion of chemoradiotherapy.
Regular follow-up visits (frequency not specified)
A Prospective Phase II Study of Simultaneous Modulated Accelerated Radiotherapy Concurrently With CDDP/S1 for Esophageal Squamous Cell Carcinoma in the Elderly.
Final report of Intergroup Trial 0122 (ECOG PE-289, RTOG 90-12): Phase II trial of neoadjuvant chemotherapy plus concurrent chemotherapy and high-dose radiation for squamous cell carcinoma of the esophagus.
A phase I/II study of external beam radiation, brachytherapy, and concurrent chemotherapy for patients with localized carcinoma of the esophagus (Radiation Therapy Oncology Group Study 9207): final report.
Comparing Paclitaxel Plus Fluorouracil Versus Cisplatin Plus Fluorouracil in Chemoradiotherapy for Locally Advanced Esophageal Squamous Cell Cancer: A Randomized, Multicenter, Phase III Clinical Trial.
INT 0123 (Radiation Therapy Oncology Group 94-05) phase III trial of combined-modality therapy for esophageal cancer: high-dose versus standard-dose radiation therapy.
Bruce D Minsky, Thomas F Pajak, Robert J Ginsberg...