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Engineered immune cells take aim at a common pancreatic cancer mutation

NCT ID NCT07649928

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This early-phase trial tests an experimental drug called ES502 in people with advanced pancreatic cancer that has a specific genetic change (RAS G12V) and who have run out of standard treatments. ES502 is a lab-made protein designed to guide the body's immune T-cells to attack cancer cells carrying that mutation. The study's main goals are to check the drug's safety and find the best dose, while also watching for any signs that tumors shrink or stop growing.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
ES502 injection (a bispecific T-cell receptor fusion protein targeting RAS G12V)
What this could lead to
If successful, this could point toward a new treatment option for people with advanced pancreatic cancer who have the RAS G12V mutation and no other options.
What could go wrong
This is a very early, small study (24 people) focused on safety. The treatment may not shrink tumors or could cause serious side effects. Success in this phase does not guarantee broader benefit.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Early phase 1

The earliest testing in people: a first look at safety, in a very small group.

Participants

About 24 people

The number the study aims to enrol. It can still change while the study runs.

Started

May 2026

Expected to finish

Jun 2029

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: \- To be enrolled in this study, participants must meet all of the following inclusion criteria: 1. Age ≥18 years, regardless of gender; 2. Available fresh or archived tumor tissue samples (within the past 5 years) for testing at screening; 3. Individuals with histologically or cytologically confirmed advanced solid tumors for whom no standard therapy exists, who are refractory to standard therapy, or who are deemed unsuitable for standard therapy by the investigator. Tumor types include but are not limited to: pancreatic cancer, colorectal cancer, non-small cell lung cancer, intrahepatic cholangiocarcinoma, gallbladder cancer, ovarian cancer, endometrial cancer, and intestinal cancer; 4. RAS G12V mutation (KRAS/NRAS/HRAS) and positivity for HLA-DPB1\*03:01, \*14:01, \*25:01, or \*104:01; 5. Individuals with at least one measurable lesion (defined per RECIST v1.1 as a lesion with the longest diameter ≥10 mm, or a lymph node with a short axis of ≥15 mm); lesions that have undergone radiotherapy or other local therapies are not considered target lesions unless they demonstrate clear progression; 6. ECOG score: 0-1; 7. Expected survival greater than 3 months; 8. Adequate hematological and organ function, as evidenced by the following laboratory tests (the individual must not have received a blood transfusion, long-acting EPO or long-acting G-CSF within 14 days before study treatment, or not have received short-acting EPO or short-acting G-CSF within 7 days before study treatment): 1) hematology: absolute neutrophil count (ANC) ≥1.5 × 10⁹/L, platelet count (PLT) ≥100 × 10⁹/L, hemoglobin (Hb) ≥90 g/L; 2) liver function test: both aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≤3.0 × upper limit of normal (ULN), total bilirubin (TBIL) ≤1.5 × ULN. Exceptions: liver metastasis, AST and/or ALT ≤5 × ULN; Gilbert's syndrome, TBIL ≤3 × ULN; pancreatic head cancer or biliary obstruction, TBIL ≤3 × ULN; 3) kidney function test: creatinine clearance (CrCL) ≥50 mL/min (by Cockcroft-Gault formula); 4) coagulation function test: activated partial thromboplastin time (APTT) ≤1.5 × ULN and international normalized ratio (INR) or prothrombin time (PT) ≤1.5 × ULN; 5) echocardiography: left ventricular ejection fraction (LVEF) ≥50%; eligibility for enrollment of individuals with out-of-range laboratory results should be determined at the investigator's discretion. 9. Women of childbearing potential who agree to use at least one medically recognized method for contraception (e.g., intrauterine device, contraceptive pills, or condoms) during the study treatment and for 1 year after the last treatment, and have a negative pregnancy test result at screening; 10. Prior antitumor treatment-related adverse events (AEs) (per NCI-CTCAE v6.0) have resolve to ≤ Grade 1 at screening, except for alopecia, Grade 2 hypothyroidism, and non-clinically significant or asymptomatic laboratory abnormalities; 11. Individuals who fully understand the informed consent information, agree to participate in this clinical study, and voluntarily sign the Informed Consent Form (ICF). Exclusion Criteria: \- To be enrolled in this study, participants must not meet any of the following exclusion criteria: To be enrolled in this study, participants must not meet any of the following exclusion criteria: 1. Individuals with the following tumors: * Malignant tumors other than those under investigation in this study (except for cured thyroid cancer, skin basal cell carcinoma, or cervical carcinoma in situ) within the past 5 years; * Meningeal metastases; * Brain metastases, except for individuals who have received systematic and radical therapy (radiotherapy or surgery) for brain metastases, demonstrated radiologically stable disease for at least 4 weeks, discontinued systemic corticosteroids for more than 2 weeks, and remain asymptomatic. 2. Individuals with the following conditions: * Received prior targeted therapy targeting RAS-G12V within 4 weeks before the first dose, or within 5 half-lives of the therapeutic agent, whichever is longer; * Participation in other clinical studies involving an investigational product within 4 weeks before the first dose; * Use of systemic antitumor therapy (including but not limited to chemotherapy, radiotherapy, biotherapy, immunotherapy, and cell therapy) within 4 weeks or 5 half-lives (whichever is shorter) before the first dose; * Receipt of major surgery without complete recovery within 4 weeks before the first dose, or planning to undergo major surgery during the study; * Receipt of systemic immunosuppressants or systemic corticosteroids within 1 week before the first dose; * Receipt of live-attenuated vaccines within 4 weeks before the first dose, or planning to receive such vaccines during the study; * Planning to receive any other systemic antitumor therapy (chemotherapy, radiotherapy, biotherapy, immunotherapy, cell therapy, etc.) during the study; 3. Symptomatic ascites, pleural effusion or pericardial effusion requiring drainage at screening, or history of drainage for serous effusion within 4 weeks before the first dose; 4. History of clinically significant cardiovascular disorders at screening, including but not limited to congestive heart failure (NYHA Class ≥ II), unstable angina, myocardial infarction, stroke or transient ischemic attack (TIA), severe arrhythmias (including but not limited to atrial fibrillation or paroxysmal supraventricular tachycardia, complete left bundle branch block or third-degree atrioventricular block with clinical significance and requiring clinical intervention), or poorly controlled hypertension (systolic blood pressure ≥160 mmHg and/or diastolic blood pressure ≥100 mmHg) within 6 months before enrollment; 5. QT interval corrected by Fridericia's formula (QTcF) ≥470 ms; 6. History of severe infection within 4 weeks before the first dose; active infection requiring therapeutic intravenous antibiotics within 2 weeks before the first dose. Use of prophylactic antibiotics is not an exclusion criterion; 7. Active autoimmune diseases, or any conditions requiring systemic corticosteroids or immunosuppressants (prednisone at ≥20 mg/day or an equivalent dose) at screening; 8. History or evidence of clinically unstable or poorly controlled disorders (including but not limited to cardiac, pulmonary, renal, hepatic, metabolic or hematological disorders) at screening; 9. History of severe allergy or known hypersensitivity to the investigational product or its components; 10. Organ transplantation, allogeneic stem cell transplantation or renal replacement therapy in the past or at screening; 11. Pulmonary embolism, pulmonary fibrosis, interstitial lung disease or acute lung disease in the past or at screening; 12. Positivity for Treponema pallidum antibody, positivity for human immunodeficiency virus (HIV) antibody, or active hepatitis B virus (HBV) or hepatitis C virus (HCV) infection at screening. Definition of active HBV infection: positivity for hepatitis B surface antigen (HBsAg), and HBV DNA above the ULN; definition of active HCV infection: positivity for hepatitis C antibody, and HCV RNA above the ULN. Such conditions unsuitable for enrollment as judged by the investigator; 13. Other circumstances inappropriate for participation in this study as considered by the investigator.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine

    RECRUITING

    Shanghai, Shanghai Municipality, 200025, China

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