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A Study Evaluating the Safety and Efficacy of JS212 Combination Therapy in Patients With Advanced Esophageal Squamous Cell Carcinoma

An Open-label, Multicenter, Phase II Clinical Study to Evaluate the Safety and Efficacy of JS212 Combination Therapy in Patients With Advanced Esophageal Squamous Cell Carcinoma (ESCC)

Status
Not yet recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07484724
Enrollment
280
Registered
2026-03-20
Start date
2026-04-01
Completion date
2028-04-01
Last updated
2026-03-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Advanced Esophageal Squamous Cell Carcinoma

Brief summary

This study is an open-label, multi-center phase II clinical trial aimed to evaluat the safety and preliminary efficacy of JS212 combination therapy in patients with advanced esophageal squamous cell carcinoma (ESCC).

Interventions

DRUGJS212

JS212 will be administered every 3 weeks

DRUGJS001

JS001 will be administered every 3 weeks

DRUG5-FU

5-FU will be administered on d1and d8 every 3 weeks

Sponsors

Shanghai Junshi Bioscience Co., Ltd.
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

1. Male or female subjects aged 18 to 75 years (inclusive) at the time of signing the Informed Consent Form (ICF). 2. Histologically or cytologically confirmed esophageal squamous cell carcinoma (ESCC) that is locally advanced, recurrent, or metastatic, and not amenable to radical treatment. 3. No prior systemic anti-tumor therapy. For patients who received neoadjuvant/adjuvant therapy or radical concurrent chemoradiotherapy, the interval from the last dose of chemotherapy to disease recurrence or progression must be \> 6 months to be eligible for screening. 4. At least one measurable lesion per Response Evaluation Criteria in Solid Tumors (RECIST 1.1). 5. Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1. 6. Expected survival ≥ 12 weeks

Exclusion criteria

1. Prior treatment with any of the following: anti-PD-1 or anti-PD-L1 antibody therapy; ADC therapy targeting EGFR and/or HER3, or ADC therapy with a topoisomerase I inhibitor as the toxic payload; 2. Subjects at high risk of bleeding or esophageal fistula, e.g., lesions with large ulcers or direct invasion of vital adjacent organs such as the aorta or trachea; 3. Subjects with a history of gastrointestinal perforation and/or fistula within 6 months prior to the first dose; 4. Presence of active central nervous system (CNS) metastases; 5. Active autoimmune disease requiring systemic therapy (e.g., corticosteroids or immunosuppressive agents) within 2 years prior to the first dose; 6. Toxicities from prior anti-tumor therapy have not recovered to ≤ Grade 1 per CTCAE v6.0 or to the level specified in the inclusion/

Design outcomes

Primary

MeasureTime frameDescription
dose-limiting toxicity (DLT)up to 4 yearsAbnormal changes in laboratory and other tests with clinical significance
adverse event(AE)up to 4 yearsAbnormal changes in laboratory and other tests with clinical significance
RP3Dup to 4 yearsRecommended dose for phase III trial
Objective response rate (ORR) based on Response Evaluation Criteria In Solid Tumors 1.1 (RECIST1.1)up to 4 yearsDefined as the proportion of subjects who achieved partial response (PR) or complete response (CR)

Secondary

MeasureTime frameDescription
Progression free survival(PFS)up to 2yearsThe time from first dose to Disease progression or death
overall survival (OS)up to 4 yearsThe time from first dose to death from any cause
immunogenicityup to 2yearsIncidence of Anti-Drug Antibody (ADA)

Countries

China

Contacts

CONTACTChengbo Jia
chengbo_jia@junpharma.com+8618547265054

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 24, 2026