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NCT05989828RecruitingPhase 1

A2-ESO-1 TCR-Engineered T Cells for Relapsed/Refractory Advanced or Metastatic NY-ESO-1 Overexpression Positive Triple Negative Breast Cancer

Phase Ib Clinical Trial of Autologous Anti-NY-ESO-1 TCR-Engineered T Cells in Patients With Relapsed/Refractory Locally Advanced or Metastatic NY-ESO-1-Expressing Triple Negative Breast Cancer

Source: ClinicalTrials.gov · Last updated 19 May 2026

Brief summary (registry, in English)

This phase Ib trial tests the safety, side effects and best dose of anti-HLA-A2/NY-ESO-1 T-cell receptor (TCR)-transduced autologous T lymphocytes (A2-ESO-1 TCR-T cells) in treating patients with NY-ESO-1 overexpression positive triple negative breast cancer (TNBC) that has come back after a period of improvement (relapsed/recurrent) or that does not respond to treatment (refractory), and that may have spread from where it first started (primary site) to nearby tissue, lymph nodes (advanced) or to other places in the body (metastatic). NY-ESO-1 is an antigen found on the surface of many different types of tumor cells including TNBC. Antigens make it possible for immune cells to recognize and kill germ cells that invade the body, however, it is more difficult for immune cells to recognize antigens on tumor cells. T cells are a special type of immune cell in the blood. These T cells may be trained to recognize the NY-ESO-1 antigen on tumor cells, allowing the T cells to attack and kill those tumor cells. The A2-ESO-1 TCR-T cells are T cells that have been removed from the patient's blood through a process called leukapheresis and then changed in the laboratory to recognize NY-ESO-1 on tumor cells. When given back to the patient, these A2-ESO-1 TCR-T cells find and attack tumor cells that express NY-ESO-1. Chemotherapy drugs, such as cyclophosphamide and fludarabine, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. They are given before the T cells to support optimum activity of the A2-ESO-1 TCR-T cells. IL-2 (aldesleukin) is in a class of drugs known as cytokines. It is a man-made version of a naturally occurring protein that stimulates the body to produce other chemicals which increase the body's ability to fight cancer. A2-ESO-1 TCR-T cells may kill more tumor cells in patients with recurrent or refractory advanced or metastatic TNBC that overexpresses NY-ESO-1.

Status (registry)
Recruiting
Phase (registry)
Phase 1
Study type
Interventional
Enrollment
20 (estimated)
First submitted
27 Jun 2023
Start date
17 Dec 2024
Primary completion date
31 Dec 2027
Lead sponsor
University of Southern California
NCT number
NCT05989828

What you commit to

  • Study type: Interventional · Phase 1
  • Planned participants: 20
  • From 17 Dec 2024 to the primary completion date, 31 Dec 2027
  • 1 site in 1 country
  • Visits and tests: ask the trial team, the registry does not list them

Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.

Who cannot take part

Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.

Prior treatment

  • Radiation therapy, chemotherapy, or non-cytotoxic investigational agent within 2 weeks of leukapheresis
  • Received cyclophosphamide within the past 4 months
  • Current use of medications that interact with or compromise the immune system such as steroid doses \> 10 mg/day prednisone or equivalent daily within 2 weeks before leukapheresis
  • Concurrent use of any complementary or alternative medicines
  • Prior major surgery that requires general anesthesia must be completed at least 4 weeks before leukapheresis and surgery that requires local anesthesia (except for study tissue sample collection) must be completed at least 2 weeks before leukapheresis and surgery that requires local anesthesia (except for study tissue sample collection) must be completed at least 2 weeks before leukapheresis

Other illness

  • Evidence of New York Heart Association class III or greater cardiac disease
  • History of myocardial infarction, stroke, ventricular arrhythmia, or symptomatic conduction abnormality within the past 12 months
  • Hypersensitivity or intolerance to cyclophosphamide, fludarabine, IL-2, or their components
  • History of clinically significant gastrointestinal bleeding, gastric or intestinal ulceration, or perforation within 6 months of enrollment.
  • Any severe and/or uncontrolled medical conditions or other conditions that could affect participation in the study, such as severely impaired lung function, any active (acute or chronic) or uncontrolled infection/disorders, and non-malignant medical illnesses that are uncontrolled or whose control may be jeopardized by the study treatment
  • History of immunodeficiency disease or autoimmune disease, with exceptions such as Hashimoto's thyroiditis / hypothyroidism, or controlled Type 1 diabetes
  • Have any active and uncontrolled infection.
  • Human immunodeficiency virus (HIV) infection or seropositive for HIV antigens

Lab values

  • History of congenital QT prolongation
  • Absolute QT interval of \> 470 msec in the presence of \> 4.0 mEq/L potassium and \> 1.8 mg/dL magnesium
  • Active hepatitis B (as defined as positive hepBsAntigen or detectable hepatitis B DNA) or hepatitis C infection. Patients who are hepatitis B surface Antigen negative and have a negative hep B DNA are allowed. If hepatitis C antibody test is positive, then patients must be tested for the presence of antigen by RT-PCR and be HCV RNA negative. Patients with laboratory evidence of cleared hepatitis B or C infection may enroll. Patients with no prior history of hepatitis B infection who have been vaccinated against hepatitis B and who have a positive antibody against hepatitis B surface antigen as the only evidence of prior exposure may enroll. Patients with a history of hepatitis C infection may be eligible if they have completed antiviral treatment and show no detectable HCV RNA for 6 months prior to enrollment.

Other

  • Brain or leptomeningeal metastases
  • Females who are pregnant or breastfeeding
  • Unwilling or unable to comply with the study protocol

Who the study is looking for

  • Female aged \>= 18 years
  • Histologically confirmed advanced or metastatic TNBC that have relapsed on or are refractory to 2 or more lines of standard-of-care therapy. TNBC is defined as estrogen receptor (ER) and progesterone receptor negative (\< 10% immunohistochemistry \[IHC\] staining) and HER2 negative (IHC 1+ or 0 AND/OR in situ hybridization negative based on:
    • Single-probe average HER2 copy number \< 4.0 signals/cell
    • Dual-probe HER2/CEP17 ratio \< 2.0 with an average HER2 copy number \< 4.0 signals/cell)
  • HLA-A2+ and tumoral overexpression of NY-ESO-1 (2 to 3+ IHC staining in \> 50% of cells)
  • Have measurable disease based on RECIST 1.1
  • Life expectancy \>= 6 months
  • Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
  • Hemoglobin \>= 9.0 g/dL (transfusions permitted)
  • Absolute neutrophil count (ANC) \>= 1500/mm\^3
  • Platelet count \>= 100,000/mm\^3
  • Creatinine (Cr) \< 2 x upper limit of normal (ULN), and Cr clearance (CrCl) \>= 50 mL/min by Cockcroft and Gault
  • Alanine transaminase (ALT) and aspartate transaminase (AST) \< 2 x ULN (Patients with liver metastases whose ALT/AST are \< 5 x ULN are eligible for enrollment)
  • Bilirubin \< 2 x ULN
  • Lymphocyte count \>= 500/uL
  • Cardiac left ventricular ejection fraction (LVEF) \>= 50%
  • Negative serum pregnancy (human chorionic gonadotropin \[beta-hCG\]) test within 7 days of leukapheresis for women of childbearing potential (WOCBP). WOCBP must be willing to use a highly effective method of contraception for the course of the study through 90 days after A2-ESO-1 TCR-engineered T cell infusion
  • Willing and able to provide written informed consent for the study
  • Willing to provide biopsy tissues and blood samples as required by the study

Age in the registry: 18 years to - · Sex: Female · Does not accept healthy volunteers

Full criteria on ClinicalTrials.gov

Sites (1)

Sites in registry order. Save your city in your profile to sort them by distance.

SiteCityCountrySite status
USC / Norris Comprehensive Cancer Center
Coordinator of this site? Confirm its status
Los AngelesUnited StatesRecruiting

This page is information, not medical advice. Discuss any trial with your doctor.