NCT07137312 · Mayo Clinic
Ex Vivo Expansion (ACT-X)
What this study is about
The purpose of this study is to understand how the body's immune cells respond to a new type of vaccine (neoantigen vaccine) designed to help the immune system recognize and fight cancer. To do this, the study team will collect a research specimen from participants to study their immune cells' reactions to the neoantigen vaccine.
View original scientific description
The purpose of this study is to understand how the body's immune cells respond to a new type of vaccine (neoantigen vaccine) designed to help the immune system recognize and fight cancer. To do this, the study team will collect a research specimen from participants to study their immune cells' reactions to the neoantigen vaccine. This research will help researchers learn more about how these vaccines might work to protect or treat against cancer.
Interventions
PROCEDURE
Blood Draw
Participants have a standard blood draw or apheresis on study. Some participants may provide a specimen via apheresis one time (the "blood draw group") and then elect to provide a second optional specimen via a standard blood draw (the "apheresis draw group") or vice versa.
PROCEDURE
Apheresis
Participants have a standard blood draw or apheresis on study. Apheresis is a procedure where blood is drawn from your body, specific components like plasma, platelets, and/or white blood cells are separated out, and the rest of the blood is returned. Some participants may provide a specimen via apheresis one time (the "apheresis group") and then elect to provide a second optional specimen via a standard blood draw (the "blood draw group") or vice versa.
Primary outcome measures
Immune effector networks
Time frame: Baseline; up to 3 years
Specimen samples obtained by blood draw and/or apheresis will be analyzed to identify immune effector networks that accelerate ex vivo expansion of antigen-specific memory precursor T cells. All tests will be two sided with a p\<0.05 being considered as statistically significant.
Dendritic cell signaling programs
Time frame: Baseline; up to 3 years
Specimen samples obtained by blood draw and/or apheresis will be analyzed to define dendritic cell signaling programs that foster generation of polyfunctional, high avidity antigen-specific T cells capable of recognizing naturally processed tumor antigen. All tests will be two sided with a p\<0.05 being considered as statistically significant.
Cytokine capture methods
Time frame: Baseline; up to 3 years
Specimen samples obtained by blood draw and/or apheresis will be analyzed to identify cytokine capture methods for isolation of antigen-specific T cells. All tests will be two sided with a p\<0.05 being considered as statistically significant.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Histologically confirmed current or previous solid malignancy or healthy individuals
- Willing to provide mandatory research blood draw or apheresis per protocol
- Provide written informed consent
- The following laboratory values obtained ≤ 28 days prior to registration
- Hemoglobin ≥10.0 g/dl
- Absolute neutrophil count (ANC) ≥1500/mm\^3
- Platelet count ≥100,000/mm\^3
Exclusion criteria
- Any of the following prior therapies:
- IV antibiotic ≤2 weeks prior to apheresis
- Major Surgery ≤4 weeks prior to registration
- Received a live vaccine ≤30 days prior to registration
- Active hematologic malignancies ≤ 3 years prior to registration
- Immunocompromised patients and patients known to be HIV positive and currently receiving antiretroviral therapy
- History of active tuberculosis (TB), human immunodeficiency virus (HIV), active hepatitis B (e.g., HBsAg reactive), and/or active hepatitis C infection \[e.g., Hepatitis C Virus (HCV) ribonucleic acid (RNA) qualitative is detected)
- Known history of active autoimmune disease that has required systemic treatment in the ≤14 days (i.e., with the use of disease-modifying agents, corticosteroids \>10 mg daily prednisone equivalent, or other immunosuppressive drugs) prior to registration.
- NOTE: Replacement therapy (e.g., thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency) is not considered a form of systemic treatment. Patients with vitiligo, Graves' disease, or psoriasis not requiring systemic treatment within the past 30 days are not excluded. Patients with Celiac disease controlled with diet modification are not excluded.
- Co-morbid systemic illnesses or other severe concurrent disease which, in the judgment of the investigator, would make the patient inappropriate for entry into this study or interfere significantly with the proper assessment of safety and toxicity of the prescribed regimens.
Where
- Jacksonville, Florida
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jun 9, 2026 · Source of record for eligibility and locations