A Study of CEA-Targeted CAR-T Therapy in Patients With CEA-Positive Advanced Solid Tumors (PBC102)

A Clinical Study to Evaluate the Safety and Efficacy of CEA-Targeted Chimeric Antigen Receptor T (CAR-T) Cells in Patients With CEA-Positive Advanced Malignant Solid Tumors

This study is a single-arm, open-label, dose-escalating + dose-expansion clinical study, aiming to evaluate the safety and efficacy of CEA-targeted CAR-T cell preparations, and to preliminarily observe the study drug in CEA-positive advanced malignant tumors. The pharmacokinetic characteristics of CAR-T cell preparations for the treatment of patients with CEA-positive advanced malignancies were obtained and the recommended dose and infusion schedule.

Study Overview

• Status: Recruiting
• Conditions: Breast Cancer; NSCLC (Advanced Non-small Cell Lung Cancer)
• Intervention / Treatment: Biological: CEA-targeted CAR-T (Intravenous); Biological: CEA-targeted CAR-T (Intrapleural)

Detailed Description

According to the different infusion methods, patients will be assigned to two parallel subgroups: intravenous infusion, intrapleural infusion.

Within each subgroup, the study is conducted in two sequential parts:

1. .Part A (dose-escalation): escalation begins at the lowest dose level; 3-6 subjects are enrolled at each dose level;
2. .Part B (dose-expansion): additional subjects are treated at the recommended dose identified in Part A to further evaluate safety and preliminary efficacy.

• Study Type: Interventional
• Enrollment (Estimated): 48
• Phase: Phase 1

Contacts and Locations

• Study Contact: Name: Fuming Qiu, PhD; Phone Number: +86 13858005908; Email: qiufuming@zju.edu.cn

Study Locations

• China
  • Zhejiang
    • Hangzhou, Zhejiang, China, 310017
      • Recruiting
      • The Second Affiliated Hospital, Zhejiang University School of Medicine
      • Principal Investigator: Junqiang Fan, PhD
      • Principal Investigator: Fuming Qiu, PhD
      • Contact: Fuming Qiu, PhD; Phone Number: +86 13858005908; Email: qiufuming@zju.edu.cn

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

1. Aged 18 years or older, of any gender.
2. Histologically or cytologically confirmed advanced, metastatic, or recurrent solid tumors, including non-small cell lung cancer and breast cancer.
3. Disease progression or intolerance after at least second-line standard therapy, including but not limited to surgery, chemotherapy, radiotherapy, targeted therapy, or immunotherapy.
4. CEA positivity confirmed by immunohistochemistry (IHC) in tumor samples within 3 months of screening (clear membrane staining, with positivity rate ≥10%). If the IHC result is more than 3 months old, serum CEA must be above 10 ng/mL.
5. At least one evaluable lesion according to RECIST 1.1, with a longest diameter of ≥10 mm for non-lymph node lesions and a shortest diameter of ≥15 mm for lymph node lesions. Malignant pleural effusion is acceptable for the chest infusion subgroup.
6. For patients with malignant pleural effusion, accurate volume assessment of pleural effusion by imaging (CT or MRI) and cytological or thoracoscopic biopsy confirmation of malignant pleural effusion.
7. ECOG performance status of 0-2.
8. Life expectancy of 12 weeks or more.
9. No serious psychiatric disorders.

10. The following organ function criteria should be met unless otherwise specified:

    1. Hematology: White blood cell count >2.0×10^9/L, neutrophils >1.0×10^9/L, lymphocytes >0.5×10^9/L, platelets >50×10^9/L, hemoglobin >80 g/L.
    2. Cardiac function: Echocardiography showing ejection fraction ≥50%, with no significant abnormalities on ECG.
    3. Renal function: Serum creatinine ≤2.0×ULN.
    4. Liver function: ALT and AST ≤3.0×ULN (≤5.0×ULN for those with liver tumor infiltration).
    5. Total bilirubin ≤2.0×ULN.
    6. Oxygen saturation >92% without supplemental oxygen.
11. Eligible for single or venous blood collection with no contraindications to cell collection.
12. Consent to use a reliable and effective method of contraception for 1 year after CAR-T cell infusion (excluding the rhythm method).
13. The participant or their authorized guardian agrees to participate in the clinical trial and signs the informed consent form (ICF), indicating an understanding of the trial's purpose and procedures.

Exclusion Criteria:

1. Clinical symptoms of CNS metastasis or meningeal metastasis at screening, or other evidence suggesting that CNS metastasis or meningeal metastasis is uncontrolled, as determined by the investigator.
2. Participation in other clinical trials within 4 weeks prior to screening.
3. Receipt of a live attenuated vaccine within 4 weeks prior to screening.
4. Receipt of chemotherapy, targeted therapy, or other experimental drugs within 14 days or at least 5 half-lives (whichever is shorter) prior to screening.
5. Active or uncontrolled infection requiring systemic treatment.
6. Tumor compression of the trachea or major blood vessels, with significant risk as assessed by the investigator.

7. History of any of the following cardiac diseases:

   1. New York Heart Association (NYHA) Class III or IV congestive heart failure.
   2. Myocardial infarction or coronary artery bypass grafting (CABG) within 6 months prior to screening.
   3. Clinically significant ventricular arrhythmias or unexplained syncope (except those caused by vasovagal or dehydration).
   4. History of severe non-ischemic cardiomyopathy.
8. Active autoimmune disease or other conditions requiring long-term immunosuppressive therapy.
9. History of or concurrent untreated malignancies within 3 years, except for basal cell carcinoma or in situ cervical cancer.
10. Positive for HBsAg or HBcAb with HBV DNA levels above the normal range, HCV antibody positive with HCV RNA levels above the normal range, HIV antibody positive, or positive for syphilis.
11. Pregnant or breastfeeding women.
12. Any other condition that the investigator deems unsuitable for participation in the study.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Non-Randomized
• Interventional Model: Sequential Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Intravenous of CEA-targeted CAR-T; Infusion of CEA-targeted CAR-T cells by dose of 2-6x10^5 cells/kg	Biological: CEA-targeted CAR-T (Intravenous); Administration method: intravenous infusion. Subjects will receive conditioning therapy by Fludarabine and Cyclophosphamide before cell infusion
Experimental: Intrapleural infusion of CEA-targeted CAR-T; Infusion of CEA-targeted CAR-T cells by dose of 2-6x10^5 cells/kg	Biological: CEA-targeted CAR-T (Intrapleural); Administration method: intrapleural infusion. Subjects will receive conditioning therapy by Fludarabine and Cyclophosphamide before cell infusion

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
To evaluate the safety of CAR-T cell preparations in the treatment of CEA-positive advanced malignancies [Safety and Tolerability]	Incidence of adverse events during the study, evaluated per the Common Terminology Criteria for Adverse Events (CTCAE) version 5.0 and American Society for Transplantation and Cellular Therapy (ASTCT) criteria	From infusion through Month 3
Obtained the recommended dose and infusion regimen of CAR-T cells for the treatment of patients with CEA-positive advanced malignancies [Safety and Tolerability]	Dose-limiting toxicity after CEA CAR-T cell infusion	From infusion through Month 3

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
To characterize the in-vivo cellular kinetics of CAR-T cells【pharmacokinetics】	Cmax: maximum observed level of circulating CAR-T cells in peripheral blood after infusion	From infusion through Month 3
To characterize the in-vivo cellular kinetics of CAR-T cells【pharmacokinetics】	To determine the time to maximum observed level of circulating CAR-T cells (Tmax)	From infusion through Month 3
Objective response rate (ORR) of CEA CAR-T treatment in patients with CEA-positive advanced malignancies [Effectiveness]	Objective response rate includes：The proportion of subjects who achieved CR, PR after CAR-T infusion accounted for all treated subjects (Assessed based on RECIST criteria)，the minimum value is 0%，maximum value is 100%, and higher scores mean a better outcome.	2 years
Progress-free survival(PFS) of CEA CAR-T treatment in patients with CEA-positive advanced malignancies [Effectiveness]	PFS will be assessed from the first CEA-CAR-T cell infusion to death from any cause or the first assessment of progression(Assessed based on RECIST criteria)	2 years
Overall survival(OS)of CEA CAR-T treatment in patients with CEA-positive advanced malignancies [Effectiveness]	OS will be assessed from the first CEA-CAR-T cell infusion to death from any cause (Assessed by investigators based on IRECIST criteria)	2 years
Assessing disease control(DCR) rates of CAR-T cell preparations in CEA-positive advanced malignancies [Effectiveness]	DCR: The proportion of subjects who achieved CR, PR, SD after CAR-T infusion accounted for all treated subjects (Assessed based on RECIST criteria)，the minimum value is 0%，maximum value is 100%, and higher scores mean a better outcome.	From infusion through Month 3
Duration of Response (DOR) of CEA CAR-T treatment in patients with CEA-positive advanced malignancies [Effectiveness]	DOR is defined as the time from the first documented evidence of CR or PR until disease progression or death(Assessed based on RECIST criteria)	2 years
To evaluate the efficacy of CAR-T cell preparations in CEA-positive advanced malignancies【Effectiveness】	Changes in serum tumor marker levels: CEA, CA-125, etc.	2 years
To characterize the in-vivo cellular kinetics of CAR [T cells#pharmacokinetics]	To estimate AUC0-28d and AUC0-90d for circulating CAR-T cells	From infusion through Month 3

Other Outcome Measures

Outcome Measure	Measure Description	Time Frame
Change in Residual Tumor Cells after CEA CAR-T Therapy	Assess changes in residual tumor cells before and after CEA CAR-T therapy to identify potential biomarkers associated with therapeutic response	2 years
Change in CEA Expression after CEA CAR-T Therapy	Assess changes in CEA expression before and after CEA CAR-T therapy to identify potential biomarkers associated with therapeutic response	2 years
Change in Tumor-Infiltrating Immune Cells after CEA CAR-T Therapy	Assess changes in tumor-infiltrating immune cells (e.g., T cells, NK cells, macrophages) before and after CEA CAR-T therapy to identify potential biomarkers associated with therapeutic response	2 years
Change in Multi-omics Profiles after CEA CAR-T Therapy	Assess changes in multi-omics profiles (e.g., genomics, transcriptomics, proteomics) before and after CEA CAR-T therapy to identify potential biomarkers associated with therapeutic response	2 years

Collaborators and Investigators

• Sponsor: Second Affiliated Hospital, School of Medicine, Zhejiang University
• Collaborators: Chongqing Precision Biotech Co., Ltd
• Investigators: Principal Investigator: Fuming Qiu, PhD, Second Affiliated Hospital, School of Medicine, Zhejiang University; Principal Investigator: Junqiang Fan, PhD, Second Affiliated Hospital, School of Medicine, Zhejiang University

Study record dates

Study Major Dates

• Study Start (Actual): October 13, 2025
• Primary Completion (Estimated): June 30, 2028
• Study Completion (Estimated): September 30, 2028

Study Registration Dates

• First Submitted: September 24, 2025
• First Submitted That Met QC Criteria: November 24, 2025
• First Posted (Actual): November 26, 2025

Study Record Updates

• Last Update Posted (Actual): November 26, 2025
• Last Update Submitted That Met QC Criteria: November 24, 2025
• Last Verified: September 1, 2025

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Neoplasms by Site; Neoplasms; Respiratory Tract Diseases; Lung Diseases; Respiratory Tract Neoplasms; Thoracic Neoplasms; Lung Neoplasms; Skin Diseases; Breast Diseases; Carcinoma, Bronchogenic; Bronchial Neoplasms; Skin and Connective Tissue Diseases; Breast Neoplasms; Carcinoma, Non-Small-Cell Lung
• Other Study ID Numbers: 2025-0883

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No