Trial reportJournal for immunotherapy of cancer2026
Induction toripalimab plus chemotherapy sequential concurrent chemoradiotherapy with nimotuzumab followed by toripalimab maintenance in stage IVB hypopharyngeal squamous cell carcinoma: a single-arm phase 2 study.
Trial report in Journal for immunotherapy of cancer, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05860335 (Efficacy and Safety ofToripalimab Combined With AP-induced Chemotherapyfollowed by Concurrent Chemoradiotherapy and Toripalimab-maintenance Therapysequentially in Patients With Non-metastatic IVB Hypopharyngeal Cancer), which is not on this map. Not yet cited in PubMed.
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Efficacy and Safety ofToripalimab Combined With AP-induced Chemotherapyfollowed by Concurrent Chemoradiotherapy and Toripalimab-maintenance Therapysequentially in Patients With Non-metastatic IVB Hypopharyngeal Cancer : Aopen-lablc, Single-arm ,Phase II Clinical Study
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15 authors.
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Abstract
backgroundOptimal induction chemoimmunotherapy sequential concurrent chemoradiotherapy (cCRT) in locally advanced hypopharyngeal squamous cell carcinoma (HSCC) remains undefined. This study aimed to evaluate toripalimab plus chemotherapy sequential cCRT with nimotuzumab, followed by toripalimab maintenance in unresectable stage IVB HSCC.
methodsIn this single-arm, open-label, phase 2 study, untreated patients received two 21-day cycles of induction toripalimab 240 mg (d1) plus
resultsFrom March 16, 2022 to April 24, 2024, 31 patients completed induction chemoimmunotherapy. With a median follow-up of 31 months, median PFS and overall survival (OS) were not reached; 2-year PFS and OS rates were 67.7% and 86.4%. The 2-year larynx preservation rate was 93.3%. 30 (96.8%) patients achieved the best objective response, with 28 (90.3%) complete responses and 2 (6.5%) partial responses. The most common grade 3-4 treatment-related adverse events (TRAEs) were radiation-induced oropharyngeal mucositis and decreased appetite (each 46.9%). No grade 5 and fatal TRAEs occurred. No difficulties in speech and swallowing functions were reported in 96.8% of patients. There was no significant association between PFS and PD-L1 combined positive score, epidermal growth factor receptor expression, tumor-infiltrating T-lymphocytes, tumor mutational burden, or genetic alterations. High baseline peripheral CD3
conclusionsThis exploratory study demonstrated preliminary efficacy and larynx preservation with manageable toxicity, possibly supporting further evaluation of induction toripalimab plus chemotherapy sequential cCRT with nimotuzumab, followed by toripalimab maintenance in stage IVB HSCC. Peripheral lymphocytes may warrant further investigation as candidate biomarkers in locally advanced disease. TRIAL REGISTRATION NUMBER: NCT05860335; ChiCTR2300074672.
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