PD-1 Knockout Engineered T Cells for Metastatic Renal Cell Carcinoma.
Metastatic Renal Cell Carcinoma
About this trial
This is an interventional treatment trial for Metastatic Renal Cell Carcinoma
Eligibility Criteria
Inclusion Criteria:
- Pathologically verified stage IV Renal cancer with measurable lesions (On CT: longest diameter of tumoral lesion >=10 mm, shorted diameter of lymph node >=15 mm; measurable lesions should not have been irradiated)
- Progressed after all standard treatment
- Performance score: 0-1
- Expected life span: >= 6 months
- Toxicities from prior treatment has resolved. Washout period is 4 weeks for chemotherapy, and 2 weeks for targeted therapy
- Major organs function normally
- Women at pregnant ages should be under contraception
- Willing and able to provide informed consent
Exclusion Criteria:
- Pathology is mixed type
- Emergent treatment of tumor emergency is needed
- Poor vasculature
- Coagulopathy, or ongoing thrombolytics and/or anticoagulation
- Blood-borne infectious disease, e.g. hepatitis B
- History of mandatory custody because of psychosis or other psychological disease inappropriate for treatment deemed by treating physician
- With other immune diseases, or chronic use of immunosuppressants or steroids
- Compliance cannot be expected
- Other conditions requiring exclusion deemed by physician
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Experimental
Placebo Comparator
Test group
Comparable group
Peripheral blood lymphocytes will be collected and Programmed cell death protein 1(PDCD1) gene will be knocked out by CRISPR Cas9 in the laboratory (PD-1 Knockout T cells). The lymphocytes will be selected and expanded ex vivo and infused back into patients. Cyclophosphamide at 20mg/kg single dose will be administered 3 days i.v. before cell infusion. A total of 2 x 10^7/kg PD-1 Knockout T cells will be infused in one cycle. Each cycle is divided into three administrations, with 20% infused in the first administration, 30% in the second, and the remaining 50% in the third.Interleukin-2 (IL-2) will be given in the following 5 days, 720000 international unit(IU)/Kg/ day (if tolerant). Patients will receive a total of 2, 3, 4 cycles of treatment.
Peripheral blood lymphocytes will be collected and Programmed cell death protein 1(PDCD1) gene will not be knocked out by CRISPR Cas9 in the laboratory (PD-1 Wild-type T cells). The lymphocytes will be selected and expanded ex vivo and infused back into patients. Cyclophosphamide at 20mg/kg single dose will be administered 3 days i.v. before cell infusion. A total of 2 x 10^7/kg PD-1 Knockout T cells will be infused in one cycle. Each cycle is divided into three administrations, with 20% infused in the first administration, 30% in the second, and the remaining 50% in the third.Interleukin-2 (IL-2) will be given in the following 5 days, 720000 international unit(IU)/Kg/ day (if tolerant). Patients will receive a total of 2, 3, 4 cycles of treatment.