A Study Of Ex Vivo Expansion (ACT-X)

Overview

About this study

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 blood sample 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.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. There is no guarantee that every individual who qualifies and wants to participate in a trial will be enrolled. Contact the study team to discuss study eligibility and potential participation.

Inclusion Criteria:

  • Age ≥ 18 years.

  • Histologically confirmed solid malignancy or healthy individuals.

  • Willing to provide mandatory research blood draw or apheresis per protocol (see Section 17.0).

  • Provide written informed consent.

  • Negative pregnancy test done ≤7 days prior to pre-registration for persons of childbearing potential only.

NOTE: A serum pregnancy test will be required if the urine test is positive or cannot be confirmed as negative.

  • The following laboratory values obtained ≤ 28 days prior to registration.

    • Hemoglobin ≥910.0 g/dl

    • Absolute neutrophil count (ANC) ≥1500/mm3

    • Platelet count ≥100,000/mm3

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., HCV 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 pre-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.

Note: Other protocol defined Inclusion/Exclusion Criteria may apply.

Eligibility last updated 5/14/2025. Questions regarding updates should be directed to the study team contact.

Participating Mayo Clinic locations

Study statuses change often. Please contact the study team for the most up-to-date information regarding possible participation.

Mayo Clinic Location Status Contact

Jacksonville, Fla.

Mayo Clinic principal investigator

Keith Knutson, Ph.D.

Contact us for the latest status

Contact information:

Cancer Center Clinical Trials Referral Office

(855) 776-0015

More information

Publications

Publications are currently not available
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CLS-20593187

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