Treatment using CEA-targeted CAR-T cells for advanced solid tumors

Chimeric Antigen Receptor T Lymphocytes (CAR-T) Targeting CEA in the Treatment of CEA Positive Clinical Study of Advanced Malignant Solid Tumors

This study is testing a new CAR-T cell therapy aimed at treating advanced solid tumors that have a specific marker called CEA to see how safe and effective it is for patients.

Quick facts

• Phase: PHASE1; PHASE2
• Study type: Interventional
• Enrollment: 60 (estimated)
• Ages: 18 Years and up
• Sex: All
• Sponsor: Chongqing Precision Biotech Co., Ltd (industry)
• Drugs / interventions: CAR-T, chemotherapy
• Locations: 1 site (Henan)
• Trial ID: NCT05538195 on ClinicalTrials.gov

What this trial studies

This clinical trial evaluates the safety and efficacy of CEA-targeted CAR-T cell therapy in patients with advanced malignant solid tumors that express carcinoembryonic antigen (CEA). It is a single-arm, open-label study that includes a dose-escalation phase followed by a dose-expansion phase, with patients receiving either intravenous or local peritoneal infusions of the CAR-T cells. The study aims to determine the recommended dose and infusion schedule while monitoring the pharmacokinetics of the treatment.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older with advanced, metastatic, or recurrent CEA-positive malignant tumors who have failed at least second-line standard treatments.

Not a fit: Patients with tumors that do not express CEA or those who have not received prior treatments may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could provide a novel therapeutic option for patients with advanced CEA-positive solid tumors that have not responded to standard therapies.

How similar studies have performed: While CAR-T cell therapies have shown promise in hematological malignancies, this specific approach targeting solid tumors is still novel and has not been extensively tested in prior studies.

Eligibility criteria

Inclusion Criteria:

1. Age ≥18 years old, male or female;
2. Advanced, metastatic or recurrent malignant tumors diagnosed by histology or pathology, mainly colorectal cancer, esophageal cancer, gastric cancer, and pancreatic cancer;
3. After receiving at least second-line standard treatment failure (disease progression or intolerance, such as surgery, chemotherapy, radiotherapy, etc.) or lack of effective treatment methods;
4. Immunohistochemical staining of tumor samples within 3 months confirmed that the tumor was CEA positive (clear membrane staining, positive rate ≥ 10%); , the positive rate ≥ 10%), the serum CEA of the patient is required to exceed 10ug/L.
5. At least one assessable lesion according to RECIST 1.1 criteria;
6. ECOG score 0-2 points;
7. No serious mental disorder;
8. Unless otherwise specified, the function of the vital organs of the subject shall meet the following conditions:

   1. Blood routine: white blood cells\>3.0×10\^9/L, neutrophils\>0.8×10\^9/L, lymphocytes cells\>0.5×10\^9/L, platelets\>75×10\^9/L, hemoglobin\>80g/L;
   2. Cardiac function: echocardiography showed cardiac ejection fraction ≥50%, and no obvious abnormality was found on electrocardiogram;
   3. Renal function: serum creatinine≤2.0×ULN;
   4. Liver function: ALT and AST ≤3.0×ULN (for patients with liver tumor infiltration, it can be relaxed to ≤5.0×ULN);
   5. Total bilirubin≤3.0×ULN;
   6. Oxygen saturation ≥95% in non-oxygen state.
9. Have apheresis or venous blood collection standards, and have no other contraindications for cell collection;
10. Subjects agree to use reliable and effective contraceptive methods for contraception within 1 year after signing the informed consent form to receiving CAR-T cell infusion (excluding rhythm contraception);
11. The patients themselves or their guardians agree to participate in this clinical trial and sign the ICF, indicating that they understand the purpose and procedures of this clinical trial and are willing to participate in the research.

Exclusion Criteria:

1. Those who have central nervous system metastasis or meningeal metastasis at the time of screening are judged by the investigator to be unsuitable for inclusion;
2. Participated in other clinical studies within 1 month before screening;
3. vaccinated with live attenuated vaccine within 4 weeks before screening;
4. Received the following anti-tumor treatments before screening: Received chemotherapy, targeted therapy or other experimental drug treatments within 14 days or at least 5 half-lives (whichever is shorter);
5. Active infection or uncontrollable infection requiring systemic treatment;
6. Patients with intestinal obstruction, active gastrointestinal bleeding, or a history of gastrointestinal bleeding within 3 months;
7. Except for alopecia or peripheral neuropathy, the toxicity of previous anti-tumor therapy has not improved to the baseline level or ≤ grade 1;
8. Suffering from any of the following heart diseases:

   1. New York Heart Association (NYHA) stage III or IV congestive heart failure;
   2. Myocardial infarction or coronary artery bypass grafting (CABG) within 6 months before enrollment;
   3. Clinically significant ventricular arrhythmia, or a history of unexplained syncope (except those caused by vasovagal or dehydration);
   4. History of severe non-ischemic cardiomyopathy;
9. Patients with active autoimmune disease, or other patients requiring long-term immunosuppressive therapy;
10. Suffering from other uncured malignant tumors in the past 3 years or at the same time, except cervical carcinoma in situ and basal cell carcinoma of the skin;
11. Hepatitis B surface antigen (HBsAg) or hepatitis B core antibody (HBcAb) positive and peripheral blood hepatitis B virus (HBV) DNA titer test is greater than the normal range; hepatitis C virus (HCV) antibody positive and peripheral blood hepatitis C Virus (HCV) RNA test is greater than the normal range; human immunodeficiency virus (HIV) antibody positive; syphilis test positive;
12. Women who are pregnant or breastfeeding;
13. Other investigators deem it unsuitable to participate in the research.

Where this trial is running

Henan

• He'nan Cancer Hospital — Henan, China (RECRUITING)

Study contacts

• Principal investigator: Ning Li, MD — Henan Cancer Hospital
• Study coordinator: Ning Li, MD

Conditions: Gastric Cancer, Colon Cancer, Rectal Cancer, Esophageal Cancer, Pancreatic Cancer