Dual-Target HER2/CEA CAR-NK Cells in Advanced Biliary Tract Cancer (DUET-BTC)
A Phase 1/2, Open-Label, Biomarker-Selected Study of Allogeneic Dual-Target HER2/CEACAM5 Chimeric Antigen Receptor Natural Killer Cells (EB-HC01) in Participants With Unresectable or Metastatic Cholangiocarcinoma and Other Biliary Tract Cancers
研究概览
详细说明
Biliary tract cancers remain highly lethal after progression on gemcitabine/platinum-based therapy, and only a biomarker-defined minority have actionable cell-surface targets.
HER2 has the strongest clinical validation among the antigens under consideration, including active HER2-targeted drug development and prior HER2 CAR-T experience in advanced BTC. CEACAM5 is retained as a complementary second target because it may reduce antigen escape and improve coverage of heterogeneous disease; however, it is treated conservatively because prior CEA-directed cell therapy has shown gastrointestinal and pulmonary toxicity in other solid tumors. EpCAM is not used for enrollment in this example because physiologic expression in the biliary tree may narrow the safety window for a first systemic study. EB-HC01 is designed as an off-the-shelf cord bloodderived NK-cell product manufactured as a fixed 1:1 mixture of HER2-CAR-NK and CEACAM5-CAR-NK cells.
After fludarabine/cyclophosphamide lymphodepletion, participants receive intravenous EB-HC01 on Days 0 and 7 of a 28-day cycle. In Part A, a standard 3+3 doseescalation design evaluates 3 flat-dose levels to identify the RP2D. In Part B, an expansion cohort at RP2D better defines safety and preliminary activity in biomarkerconfirmed dual-positive BTC.
Key correlative studies include central HER2 and CEACAM5 testing, ctDNA analysis, serum CA19-9 and CEA,and serial blood assessments of CAR-NK persistence and cytokine kinetics. EpCAM testing is retained as an exploratory biomarker to inform future protocol amendments but is not used to determine eligibility.
研究类型
注册 (估计的)
阶段
- 阶段2
- 阶段1
联系人和位置
学习联系方式
- 姓名：Seni S Lu, Phd
- 电话号码：+86 13076790030
- 邮箱：Seni-Lu@beijing-biotech.com
学习地点
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Guangdong
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Shenzhen、Guangdong、中国、518036
- 招聘中
- Peking University Shenzhen Hospital
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接触：
- Zhen J Peng, Phd
- 电话号码：+86 13076790039
- 邮箱：Zhen-Peng@beijing-biotech.com
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-
参与标准
资格标准
适合学习的年龄
- 成人
- 年长者
接受健康志愿者
描述
Inclusion Criteria:
- Histologically or cytologically confirmed unresectable, recurrent, or metastatic intrahepatic cholangiocarcinoma, extrahepatic cholangiocarcinoma, or gallbladder carcinoma.
- Disease progression after at least 1 prior gemcitabine/platinum-containing regimen in the advanced setting; prior durvalumab and prior HER2-targeted therapy are allowed.
- Central biomarker confirmation of HER2 positivity (IHC 3+ or IHC 2+/ISH+ or ERBB2 amplification) and CEACAM5/CEA positivity (membranous expression in >=20% of viable tumor cells by IHC).
- At least 1 measurable lesion according to RECIST 1.1.
- ECOG performance status 0-1.
- Adequate marrow, renal, hepatic, and cardiac function as defined by the protocol.
- Resolved biliary obstruction or stable internal/external drainage for >=7 days before lymphodepletion, with no active cholangitis.
- Life expectancy >=12 weeks.
- Willingness to provide archival or fresh tumor tissue and serial blood samples for central biomarker testing and correlative studies.
- Agreement to use protocol-specified contraception
Exclusion Criteria:
- Prior HER2-directed or CEA-directed gene-modified cell therapy.
- Untreated or unstable CNS metastases or leptomeningeal disease.
- Active uncontrolled infection, including uncontrolled cholangitis, sepsis, or clinically significant uncontrolled hepatitis or HIV infection.
- Ongoing systemic immunosuppression greater than 10 mg/day prednisone equivalent within 7 days before lymphodepletion.
- Clinically significant interstitial lung disease, uncontrolled heart failure, unstable arrhythmia, or recent myocardial infarction.
- Child-Pugh B or C liver disease, hepatic encephalopathy, or clinically significant refractory ascites.
- Prior allogeneic solid organ transplant or allogeneic stemcell transplant.
- Active autoimmune disease requiring systemic therapy within the previous 2 years.
- Pregnancy or breastfeeding.
- Any condition that, in the investigator's judgment, would make lymphodepletion or EB-HC01 infusion unsafe or would interfere with protocol compliance.
学习计划
研究是如何设计的？
设计细节
- 主要用途：治疗
- 分配：非随机化
- 介入模型：单组作业
- 屏蔽：无（打开标签）
武器和干预
参与者组/臂 |
干预/治疗 |
|---|---|
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实验性的：EB-HC01 after lymphodepletion
Participants with biomarker-confirmed HER2/CEACAM5-positive advanced biliary tract cancer receive fludarabine plus cyclophosphamide on Days -5 to -3, followed by EB-HC01 intravenously on Days 0 and 7 of each 28-day cycle.
Up to 2 cycles are permitted during doseescalation and up to 4 cycles are allowed in expansion in the absence of progression or prohibitive toxicity.
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氟达拉滨
环磷酰胺
EB-HC01 dual-target CARNK cells
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研究衡量的是什么？
主要结果指标
结果测量 |
大体时间 |
|---|---|
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Dose-Limiting Toxicities
大体时间：28 Days
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28 Days
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Treatment-Emergent Adverse Events
大体时间：12 months
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12 months
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次要结果测量
结果测量 |
大体时间 |
|---|---|
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总生存期
大体时间：24个月
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24个月
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客观反应率
大体时间：12个月
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12个月
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反应持续时间
大体时间：24个月
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24个月
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无进展生存
大体时间：24个月
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24个月
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Disease Control Rate
大体时间：12 months
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12 months
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合作者和调查者
研究记录日期
研究主要日期
学习开始 (实际的)
初级完成 (估计的)
研究完成 (估计的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (实际的)
研究记录更新
最后更新发布 (实际的)
上次提交的符合 QC 标准的更新
最后验证
更多信息
与本研究相关的术语
其他相关的 MeSH 术语
其他研究编号
- ESBI2026-306
药物和器械信息、研究文件
研究美国 FDA 监管的药品
研究美国 FDA 监管的设备产品
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