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PD-1 Knockout Engineered T Cells for Castration Resistant Prostate Cancer

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ClinicalTrials.gov Identifier: NCT02867345
Recruitment Status : Withdrawn (no funding or finacial support)
First Posted : August 15, 2016
Last Update Posted : March 6, 2019
Sponsor:
Information provided by (Responsible Party):
Wujiang Liu, Peking University

Tracking Information
First Submitted Date August 11, 2016
First Posted Date August 15, 2016
Last Update Posted Date March 6, 2019
Study Start Date November 2016
Estimated Primary Completion Date November 2020   (Final data collection date for primary outcome measure)
Current Primary Outcome Measures
 (submitted: August 11, 2016)
Number of participants with Adverse Events and/or Dose Limiting Toxicities as a Measure of Safety and tolerability of dose of PD-1 Knockout T cells using Common Terminology Criteria for Adverse Events (CTCAE v4.0) in patients [ Time Frame: Dose Escalation - Approximately 6 months ]
Original Primary Outcome Measures Same as current
Change History Complete list of historical versions of study NCT02867345 on ClinicalTrials.gov Archive Site
Current Secondary Outcome Measures
 (submitted: August 11, 2016)
  • Response Rate:Response will be evaluated according to RECIST v1.1 [ Time Frame: 90 days ]
  • Progression free survival - PFS [ Time Frame: From date of randomization until the date of first documented progression or date of death from any cause, whichever came first, assessed up to average 10 months ]
  • Overall Survival - OS [ Time Frame: The time from randomization to death from any cause, assessed up to 2 years ]
  • Peripheral blood circulating tumor DNA [ Time Frame: 6 weeks ]
  • Temporal Interleukin-2 change in the peripheral blood [ Time Frame: Baseline and 1 month and 3 months ]
  • Temporal Interferon-γ change in the peripheral blood [ Time Frame: Baseline and 1 month and 3 months ]
  • Temporal Interleukin-6 change in the peripheral blood [ Time Frame: Baseline and 1 month and 3 months ]
Original Secondary Outcome Measures Same as current
Current Other Pre-specified Outcome Measures Not Provided
Original Other Pre-specified Outcome Measures Not Provided
 
Descriptive Information
Brief Title PD-1 Knockout Engineered T Cells for Castration Resistant Prostate Cancer
Official Title A Dose-escalation Phase I Trial of PD-1 Knockout Engineered T Cells for the Treatment of Castration Resistant Prostate Cancer
Brief Summary This study will evaluate the safety of PD-1 knockout engineered T cells in treating castration resistant prostate cancer (CRPC). Blood samples will also be collected for research purposes.
Detailed Description This is a dose-escalation study of ex-vivo knocked-out, expanded, and selected PD-1 knockout-T cells from autologous origin. Patients are assigned to 1 of 3 treatment groups to determine the maximal tolerant dose. After the lower number of cycles are considered tolerant, an arm of the next higher number of cycles will be open to next patients. Biomarkers and immunological markers are collected and analyzed as well.
Study Type Observational
Study Design Observational Model: Other
Time Perspective: Prospective
Target Follow-Up Duration Not Provided
Biospecimen Not Provided
Sampling Method Not Provided
Study Population Not Provided
Condition Hormone Refractory Prostate Cancer
Intervention
  • Biological: PD-1 Knockout T Cells
    PD-1 Knockout T Cells and PD-1 wild-type T Cells will be made by Cell Biotech Co., Ltd. 2x107/kg T cells will be used for test group and comparable group separately.
  • Drug: Cyclophosphamide

    Cyclophosphamide at 20mg/kg single dose will be administered 3 days i.v. before cell infusion.

    Interleukin-2 (IL-2) will be given in the following 5 days, 720000 international unit(IU)/Kg/day (if tolerant).

    Other Name: cytophosphane
  • Drug: IL-2
    Interleukin-2 (IL-2) will be given in the following 5 days after cell infusion, 720000 international unit(IU)/Kg/ day (if tolerant).
    Other Name: Interleukin-2 (IL-2)
Study Groups/Cohorts
  • Test 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.
    Interventions:
    • Biological: PD-1 Knockout T Cells
    • Drug: Cyclophosphamide
    • Drug: IL-2
  • Comparable group
    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 wild-type 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).
    Interventions:
    • Drug: Cyclophosphamide
    • Drug: IL-2
Publications *

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Recruitment Information
Recruitment Status Withdrawn
Actual Enrollment
 (submitted: March 4, 2019)
0
Original Estimated Enrollment
 (submitted: August 11, 2016)
20
Estimated Study Completion Date December 2020
Estimated Primary Completion Date November 2020   (Final data collection date for primary outcome measure)
Eligibility Criteria

Inclusion Criteria:

  • Pathologically and clinical verified castration resistant prostate 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
  • 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
Sex/Gender
Sexes Eligible for Study: Male
Ages 45 Years to 85 Years   (Adult, Older Adult)
Accepts Healthy Volunteers No
Contacts Contact information is only displayed when the study is recruiting subjects
Listed Location Countries China
Removed Location Countries  
 
Administrative Information
NCT Number NCT02867345
Other Study ID Numbers 11007965939
Has Data Monitoring Committee Yes
U.S. FDA-regulated Product Not Provided
IPD Sharing Statement
Plan to Share IPD: Undecided
Plan Description: Plan to open
Responsible Party Wujiang Liu, Peking University
Study Sponsor Peking University
Collaborators Not Provided
Investigators Not Provided
PRS Account Peking University
Verification Date August 2016