T Cell Mediated Adaptive Therapy for Her2-positive Neoplasms of Digestive System

Overview

This phase I trial is to investigate the safety and the possible side effects of bi-specific antibody armed T-cell therapy when given together with low-dose IL-2 in treating patients with Her2-positive neoplasms of digestive system. Expanded autologues T cells that have been coated with bi-specific antibodies, such as anti-CD3 and anti-human epidermal growth factor receptor 2 (HER2), may stimulate the immune system in different ways and stop tumor cells from growing. Interleukin-2 may stimulate white blood cells to kill tumor cells.

Study Type

  • Study Type: Interventional
  • Study Design
    • Allocation: Non-Randomized
    • Intervention Model: Single Group Assignment
    • Primary Purpose: Treatment
    • Masking: None (Open Label)
  • Study Primary Completion Date: November 2017

Detailed Description

PRIMARY OBJECTIVES: I. Perform a phase I clinical trial to clearly define the toxicity profile of IV HER2Bi armed T cells in patients with neoplasms of digestive system. SECONDARY OBJECTIVES: I. Evaluate phenotype, cytokine profiles and tumor markers, cytotoxicity directed at laboratory Her2 positive cancer cell lines. II. Evaluate the clinical symptoms and signs, clinical responses, imaging examination of pretherapy and post-treatment, cytokine profiles and tumor markers in serum before and after treatment, time to progression, and overall survival. OUTLINE: This is a safety study of IV infused HER2Bi-armed activated T cells. Patients receive HER2Bi armed T cells IV weekly for 4 weeks. Patients also receive low-dose Interleukin subcutaneously (SC) daily beginning 3 days before the first HER2Bi armed T cells infusion. Treatment continues in the absence of disease progression or unacceptable toxicity.

Interventions

  • Drug: Recombinant Human Interleukin-2
    • Given SC
  • Drug: HER2Bi-Armed T Cells
    • Given IV

Arms, Groups and Cohorts

  • Experimental: Interleukin-2 Transfusion
    • Patients receive low-dose Recombinant Human Interleukin-2 SC daily beginning 3 days before the first HER2Bi armed T cell infusions infusion.
  • Experimental: T Cells Transfusion
    • Patients receive HER2Bi-Armed T Cells IV weekly for 4 weeks. Treatment continues in the absence of disease progression or unacceptable toxicity.

Clinical Trial Outcome Measures

Primary Measures

  • Safety as measured by local and systemic toxicities
    • Time Frame: Up to 1 year

Secondary Measures

  • Changes in cytokine profiles and tumor markers in serum before and after treatment
    • Time Frame: Baseline to up to 12 months
    • Increases or decreases in the amount of cytokine produced from the pre-immunotherapy baseline at any time point after immunotherapy will be considered as continuous outcomes.
  • Changes in phenotyping induced by immunotherapy in peripheral blood mononuclear cells (PBMC)
    • Time Frame: Baseline to up to 12 months
    • PBMC from the patients will be obtained before and after immunotherapy to determine if there are any phenotype changes induced by immunotherapy. Paired t-test will be used to compare the difference between baseline and after any time point of armed T cells treatment in T cell subpopulation (FACS), tumor marker (CBA/ELISA) and tumor killing ability of PBMC.
  • Clinical response rate (including clinical symptoms and signs, complete response, partial response, progressive disease, and stable disease, imaging examination of pretherapy and post-treatment) will be measured by follow-up investigation.
    • Time Frame: Up to 12 months
    • Point and exact confidence interval estimates will be calculated for response rate.
  • Overall survival
    • Time Frame: Up to 12 months
    • Will be estimated with the standard Kaplan-Meier method, from which summary statistics of interest (median, 6 month, 1-year rate, etc.) will be derived. Both point and 95% confidence interval estimates will be calculated.
  • Progression free survival
    • Time Frame: From the beginning of immunotherapy to progression or death, assessed up to 12 months
    • Will be estimated with the standard Kaplan-Meier method, from which summary statistics of interest (median, 6 month, 1-year rate, etc.) will be derived. Both point and 95% confidence interval estimates will be calculated.

Participating in This Clinical Trial

Inclusion Criteria

1. Patient with Her2-positive neoplasms of digestive system: IHC 3+ 2. Clinical staging: Phase III or above 3. Ages: < 65 4. Expected survival time: > 1 year 5. Quality of Life: > 60 6. The functions of important organs( heart, liver, lung, kidney and etc.)are normal 7. The volunteers with informed consent Exclusion criteria:

1. Patient with Her2-negative neoplasms of digestive system 2. Hepatic renal dysfunction 3. Cardiopulmonary insufficiency 4. Mental disorder 5. Allergic condition 6. With other malignant tumor 7. Lactating women 8. Patients with infection or received chemotherapy in the past two weeks 9. Patient with autoimmune disease using immunosuppressive drug 10. Patient with organ transplantation with long term use of immunosupresive drug

Gender Eligibility: All

Minimum Age: 18 Years

Maximum Age: 65 Years

Are Healthy Volunteers Accepted: No

Investigator Details

  • Lead Sponsor
    • Yi Miao
  • Collaborator
    • Nanjing Abingen Biotech Co. Ltd
  • Provider of Information About this Clinical Study
    • Sponsor-Investigator: Yi Miao, Director of the Pancreas Research Centre; Director of Institute of Tumor Biology, Jiangsu Province Academy of Clinical Medicine – The First Affiliated Hospital with Nanjing Medical University
  • Overall Official(s)
    • Yi Miao, PH.D, Principal Investigator, The First Affiliated Hospital with Nanjing Medical University

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