Exploratory Clinical Study of FAP mRNA Vaccine in Patients With Advanced Malignant Solid Tumors

NCT07363369 | Not Yet Recruiting Phase 1

• 1 other identifier: 2025-2148
• Study Type: interventional
• Target: 10
• Locations: 0 countries
• Sites: N/A

Brief Summary

Cancer-associated fibroblasts (CAFs), as core regulators within the tumor microenvironment, significantly impede the intratumoral penetration of therapeutic agents and suppress the effective infiltration and activation of immune cells by constructing elaborate physical and functional barriers. Fibroblast activation protein (FAP) is a highly specific therapeutic target for CAFs, owing to its nearly tumor-restricted expression profile. Therefore, developing therapeutic strategies that specifically target FAP to eliminate CAFs and subsequently remodel the tumor microenvironment may effectively disrupt the multi-dimensional defense system established by CAFs, thereby significantly enhancing the delivery efficiency of anti-tumor agents and improving responsiveness to immunotherapy. This Phase I clinical trial aims to evaluate the safety, tolerability, pharmacokinetics, immunogenicity, and preliminary antitumor activity of FAP mRNA Vaccine combined with immune checkpoint inhibitors in patients with advanced malignant solid tumors.

Conditions

Advanced Malignant Solid Tumors

Outcome Measures

Primary Outcomes (2)

• Dose-limiting toxicities (DLTs) and their incidence rates

  During one year after initial treatment

• Safety: Type, frequency, and severity of treatment-related adverse events as assessed by CTCAE V5.0

  During one year after initial treatment

Secondary Outcomes (4)

• Objective response rate (ORR)

  During one year after initial treatment

• Disease control rate (DCR)

  During one year after initial treatment

• Progression-free survival (PFS)

  During one year after initial treatment

• Immunogenicity: Specific T cell levels targeting FAP antigen

  During one year after initial treatment

Study Arms (4)

FAP mRNA vaccine, Dose 1

EXPERIMENTAL

FAP mRNA vaccine

Biological: FAP mRNA vaccine (dose 1) + immune checkpoint inhibitors

FAP mRNA vaccine, Dose 2

EXPERIMENTAL

FAP mRNA vaccine

Biological: FAP mRNA vaccine (dose 2) + immune checkpoint inhibitors

FAP mRNA vaccine, Dose 3

EXPERIMENTAL

Biological: FAP mRNA vaccine (dose 3) + immune checkpoint inhibitors

FAP mRNA vaccine, Dose 4

EXPERIMENTAL

Biological: FAP mRNA vaccine (dose 4) + immune checkpoint inhibitors

Interventions

FAP mRNA vaccine (dose 1) + immune checkpoint inhibitors BIOLOGICAL

FAP mRNA vaccine (dose 1) in combination with immune checkpoint inhibitors treatment

FAP mRNA vaccine, Dose 1

FAP mRNA vaccine (dose 2) + immune checkpoint inhibitors BIOLOGICAL

FAP mRNA vaccine (dose 2) in combination with immune checkpoint inhibitors treatment

FAP mRNA vaccine, Dose 2

FAP mRNA vaccine (dose 3) + immune checkpoint inhibitors BIOLOGICAL

FAP mRNA vaccine (dose 3) in combination with immune checkpoint inhibitors treatment

FAP mRNA vaccine, Dose 3

FAP mRNA vaccine (dose 4) + immune checkpoint inhibitors BIOLOGICAL

FAP mRNA vaccine (dose 4) in combination with immune checkpoint inhibitors treatment

FAP mRNA vaccine, Dose 4

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• \. Male or female patients: aged ≥ 18 years old;
• \. Patients with histopathologically confirmed advanced malignant solid tumors (such as patients with advanced lung cancer, advanced colorectal cancer, advanced pancreatic carcinoma, etc.);
• \. Patients refractory or intolerant to standard clinical treatment regimens;
• \. According to the RECIST 1.1 criteria, at least one measurable lesion is required;
• \. Eastern Cooperative Oncology Group (ECOG) performance status score: 0 - 1;
• \. Expected survival time ≥ 3 months;
• \. Main organ functions are in good condition;
• \. Participants must have no plans for pregnancy during the treatment period and agree to use effective contraception voluntarily throughout the study period and for four months after discontinuation of treatment;
• \. Sign a written informed consent form;
• \. Ability to communicate effectively with the research team and willingness to comply fully with all protocol-specified requirements.

You may not qualify if:

• \. Known central nervous system (CNS) metastases that are untreated or not effectively controlled by prior therapy;
• \. Patients with serious cavity effusion;
• \. Patient has comorbid conditions associated with elevated FAP expression beyond solid tumors, including pulmonary fibrosis, liver fibrosis, renal fibrosis, and rheumatoid arthritis, etc.;
• \. Patients with uncontrolled cardiac clinical symptoms or diseases, such as heart failure of NYHA class II or above, unstable angina pectoris, having had a myocardial infarction within six months, and having clinically significant supraventricular or ventricular arrhythmias that require treatment or intervention;
• \. A history of thrombotic events (arterial or venous) within 6 months prior to enrollment, such as deep vein thrombosis, and pulmonary embolism;
• \. Any active autoimmune disease or history of autoimmune diseases, including but not limited to: neurologic diseases related to immunity, multiple sclerosis, autoimmune (demyelinating) neuropathy, Guillain-Barré syndrome, myasthenia gravis, systemic lupus erythematosus (SLE), connective tissue disorders, scleroderma, inflammatory bowel disease (including Crohn's disease and ulcerative colitis), autoimmune hepatitis, toxic epidermal necrolysis (TEN), or Stevens-Johnson syndrome (excluding type 1 diabetes mellitus controlled with stable-dose insulin);
• \. According to the investigator's judgment, there are concomitant uncontrolled diseases that may seriously endanger patient safety or affect the patient's completion of the study;
• \. A known history of interstitial pneumonia or highly suspected interstitial pneumonia; or patients with lung abnormalities that could interfere with the detection or management of suspected drug-related pulmonary toxicity during the study;
• \. Known allergy to the investigational drug (including any excipients). A history of severe allergic reactions to any drugs, foods, or vaccines, such as anaphylactic shock, allergic laryngeal edema, allergic dyspnea, allergic purpura, thrombocytopenic purpura, localized allergic necrotic reactions (Arthus reaction), etc.;
• \. The last anti-cancer treatment occurred less than 4 weeks before the first vaccination; patients with unresolved treatment-related adverse effects (except hair loss) from previous anti-cancer treatments;
• \. Patients who have previously received treatment with immune checkpoint inhibitors and experienced immune-related adverse events graded ≥3 according to the NCI CTCAE criteria;
• \. Systemic treatment with corticosteroids (\>10 mg/day of prednisone or equivalent doses of other glucocorticoids) or other immunosuppressive agents within 14 days before the first dose of the vaccine. However, the following situations are allowed: In the absence of active autoimmune disease, inhaled or local use of corticosteroids or adrenal hormone replacement with \<=10 mg/day prednisone is allowed;
• \. Received mRNA vaccines or lipid nanoparticles (LNP) or equivalent nanoparticle delivery drugs within 6 months prior to the first dose of the vaccine;
• \. Previously received live attenuated vaccine/inactivated vaccine within 6 months;
• \. Previous organ transplantation or allogeneic hematopoietic stem cell transplantation;

Sponsors & Collaborators

• West China Hospital: lead

MeSH Terms

Interventions

Immune Checkpoint Inhibitors

Intervention Hierarchy (Ancestors)

Molecular Mechanisms of Pharmacological Action; Pharmacologic Actions; Chemical Actions and Uses; Antineoplastic Agents, Immunological; Antineoplastic Agents; Therapeutic Uses

Study Design

• Study Type: interventional
• Phase: phase 1
• Allocation: NON RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: SEQUENTIAL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Professor

Study Record Dates

• First Submitted: January 12, 2026
• First Posted: January 23, 2026
• Study Start: January 25, 2026
• Primary Completion (Estimated): December 31, 2026
• Study Completion (Estimated): December 31, 2027
• Last Updated: January 23, 2026

Record last verified: 2026-01