Breast Cancer Clinical Trial
Administering Peripheral Blood Lymphocytes Transduced With a CD70-Binding Chimeric Antigen Receptor to People With CD70 Expressing Cancers
In a new cancer therapy, researchers take a person s blood, select a certain white blood cell to grow in the lab, and then change the genes of these cells using a virus. The cells are then given back to the person. This is called gene transfer. For this study, researchers will modify the person s white blood cells with anti-CD70.
To see if a gene transfer with anti-CD70 cells can safely shrink tumors and to be certain the treatment is safe.
Adults age 18 and older diagnosed with cancer that has the CD70-expressing cancer.
Participants will be screened with medical history, physical exam, scans, and other tests. They may by admitted to the hospital. Leukapheresis will be performed. For this, blood is removed through a needle in the arm. A machine separates the white blood cells. The rest of the blood is returned through a needle in the other arm.
Eligible participants will have an intravenous catheter placed in their upper chest. Over several days, they will get chemotherapy drugs and the anti-CD70 cells. They will recover in the hospital.
Participants will take an antibiotic for 6 months after treatment. They will repeat leukapheresis.
Participants will visit the clinic every 1-3 months for the first year after treatment, every 6 months for the second year, and then as determined by their physician. Follow-up visits will take 1-2 days. At each visit, participants will have lab tests, imaging studies, and a physical exam.
Throughout the study, blood will be taken and participants will have many tests to determine the size and extent of their tumor and the treatment s impact.
We generated a chimeric antigen receptor (CAR) that engages CD70 using its natural ligand CD27, as the binding moiety. Transducing peripheral blood lymphocytes (PBL) with this CAR conveys major histocompatibility complex (MHC)-independent recognition of CD70-expressing target cells, which include renal cell carcinoma and other cancers.
In co-cultures with CD70+ target cells, anti-hCD70 CAR transduced T cells secrete significant amounts of IFN-gamma with high specificity.
Phase I: Determine the safety of administering PBL transduced with anti-hCD70 CAR in concert with preparative lymphodepletion and high dose interleukin-2 (IL-2; aldesleukin).
Phase II: Determine if anti-hCD70 CAR-transduced PBL can mediate the regression of CD70 expressing tumors.
Patients must be/have:
--Metastatic or unresectable CD70-expressing cancer which has progressed after standard therapy
Patients may not have:
Allergies or hypersensitivities to high-dose aldesleukin, cyclophosphamide, or fludarabine.
This is a phase I/II, single center study of PBL transduced with anti-hCD70 CAR in patients with measurable, unresectable cancer expressing CD70.
PBMC obtained by leukapheresis will be cultured in the presence of anti-CD3 (OKT3) and aldesleukin in order to stimulate T-cell growth.
Transduction is initiated by exposure of these cells to retroviral vector supernatant containing replication-incompetent virus encoding the anti-hCD70 CAR.
All patients will receive a non-myeloablative, lymphodepleting preparative regimen of cyclophosphamide and fludarabine.
On day 0, patients will receive PBL transduced with the anti-hCD70 CAR and will then begin high-dose aldesleukin.
A complete evaluation of lesions will be conducted approximately 6 weeks (plus or minus two weeks) after treatment.
The study will be conducted using a Phase I/II optimal design, with two separate cohorts for the Phase II component:Cohort 2a, patients with CD70-expressing clear cell renal cell carcinoma (RCC), and Cohort 2b, patients with a CD70-expressing non-RCC malignancy (solid tumors only).
A total of up to 124 patients may be required; approximately 38 patients in the Phase I portion of the study and 43 (41, plus an allowance of up to 2 non-evaluable) patients in each cohort of the Phase II portion of the study.
For Phase I: Evaluable, unresectable cancer expressing CD70 as assessed by immunohistochemistry of resected tissue (greater than or equal to 2+ CD70 positive on greater than or equal to 50% of cancer cells, or greater than or equal to 1+ CD70 positive on greater than or equal to 75% of cancer cells).
For Phase II: Measurable (per RECIST v1.1 criteria), unresectable cancer expressing CD70 as assessed by immunohistochemistry of resected tissue (greater than or equal to 2+ CD70 positive on greater than or equal to 50% of cancer cells, or greater than or equal to 1+ CD70 positive on greater than or equal to 75% of cancer cells).
Confirmation of the diagnosis of cancer by the NCI Laboratory of Pathology.
Patients must have previously received at least one standard therapy for their cancer (if available) and have been either non-responders (progressive disease) or have recurred.
Patients with 3 or fewer brain metastases that are less than or equal to 1 cm in diameter and asymptomatic are eligible. Lesions that have been treated with stereotactic radiosurgery must be clinically stable for 1 month after treatment for the patient to be eligible. Patients with surgically resected brain metastases are eligible.
Age greater than or equal to 18 years and less than or equal to 70 years.
Clinical performance status of ECOG 0 or 1
Patients of both genders must be willing to practice birth control from the time of enrollment on this study and for four months after treatment.
Women of child-bearing potential must be willing to undergo a pregnancy test prior to the start of treatment because of the potentially dangerous effects of the treatment on the fetus.
Seronegative for HIV antibody. (The experimental treatment being evaluated in this protocol depends on an intact immune system. Patients who are HIV seropositive may have decreased immune-competence and thus be less responsive to the experimental
treatment and more susceptible to its toxicities.)
Seronegative for hepatitis B antigen, and seronegative for hepatitis C antibody. If hepatitis C antibody test is positive, then patient must be tested for the presence of antigen by RT-PCR and be HCV RNA negative.
ANC greater than 1000/mm(3) without the support of filgrastim
WBC greater than or equal to 2500/mm(3)
Platelet count greater than or equal to 80,000/mm(3)
Hemoglobin > 8.0 g/dL. Subjects may be transfused to reach this cut-off.
Serum ALT/AST less than or equal to 5.0 times ULN
Serum creatinine less than or equal to 1.6 mg/dL
Total bilirubin less than or equal to 2.0 mg/dL, except in patients with Gilbert s Syndrome who must have a total bilirubin less than 3.0 mg/dL.
Patients must have completed any prior systemic therapy at the time of enrollment.
Note: Patients may have undergone minor surgical procedures or limited field radiotherapy within the four weeks prior to enrollment, as long as related major organ toxicities have recovered to grade 1 or less.
Ability of subject to understand and the willingness to sign a written informed consent document.
Willing to sign a durable power of attorney.
Subjects must be co-enrolled on the NCI-SB cell harvest protocol 03-C-0277 (Cell Harvest and Preparation for Surgery Branch Adoptive Cell Therapy Protocols).
Women of child-bearing potential who are pregnant or breastfeeding because of the potentially dangerous effects of the treatment on the fetus or infant.
Concurrent systemic steroid therapy.
Active systemic infections requiring anti-infective treatment, coagulation disorders, or any other active or uncompensated major medical illnesses.
Any form of primary immunodeficiency (such as Severe Combined Immunodeficiency Disease).
History of major organ autoimmune disease.
Concurrent opportunistic infections (The experimental treatment being evaluated in this protocol depends on an intact immune system. Patients who have decreased immune-competence may be less responsive to the experimental treatment and more susceptible to its toxicities).
History of severe immediate hypersensitivity reaction to cyclophosphamide, fludarabine, or aldesleukin.
History of coronary revascularization or ischemic symptoms.
For select patients with a clinical history prompting cardiac evaluation: last known LVEF less than or equal to 45%.
For select patients with a clinical history prompting pulmonary evaluation: known FEV1 less than or equal to 50% predicted.
Patients who are receiving any other investigational agents.
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