Phase I Study of HIV 1 Antigen Expanded Specific T Cell Therapy (HXTC)

October 2, 2019 updated by: University of North Carolina, Chapel Hill

IGHID 1320 - A Phase I Study to Evaluate the Safety, Immunologic, and Virologic Responses of HIV-1 Antigen Expanded Specific T Cell Therapy (HXTC) as a Therapeutic Strategy in HIV-Infected Individuals Started on Antiretroviral Therapy During Acute and Chronic Infection

This is a phase 1, single-site study is to evaluate the safety and immunologic and virologic efficacy of ex vivo expanded HIV-1 multi-antigen specific T-cell (HXTC) therapy in HIV-infected individuals with viral suppression on antiretroviral therapy (ART).

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

The main hypothesis of this study is that the administration of autologous ex vivo expanded HIV-specific T-cells (HXTCs) primed to recognize multiple HIV-1 antigens in HIV-infected participants who initiated ART during acute and chronic HIV infection will be safe, increase HIV-1 antigen specific T-cell immune responses and decrease low level viremia.

In addition, secondary objectives are to:

  1. Determine the feasibility of manufacturing HXTC from participants who started cART during acute and chronic HIV infection.
  2. Explore the ability of autologous ex vivo expanded HIV-1 specific T-cells (HXTC) to increase HIV-1 specific immune responses in participants initiated on cART during acute and chronic HIV infection.
  3. Explore the ability of autologous ex vivo expanded HIV-1 specific T-cells (HXTC) to impact latent HIV infection as measured by a quantitative viral outgrowth assay (QVOA) and integrated proviral DNA quantification, and low level viremia as measured by a single copy assay (SCA) in participants initiated on cART during acute and chronic HIV infection.

Study Type

Interventional

Enrollment (Actual)

6

Phase

  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

    • North Carolina
      • Chapel Hill, North Carolina, United States, 27599-7030
        • University of North Carolina

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 65 years (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  1. ≥ 18 years and ≤65 years of age
  2. Confirmation of HIV 1 infection

    • Chronic HIV infection (CHI) is defined as documentation of a positive HIV test result by any licensed ELISA test kit and confirmed by Western blot or Multispot HIV 1/HIV 2 assay prior to screening. HIV culture, HIV antigen, plasma HIV RNA, or a second antibody test by a method other than ELISA is acceptable as an alternative confirmatory test.
    • Acute HIV infection (AHI) is defined as: 1) a negative or indeterminate enzyme immunoassay (EIA) plus a reproducibly detectable HIV by amplification methods, or 2) a positive 4th generation HIV Ag/Ab Combination assay and either a negative/indeterminate HIV rapid test or a negative/indeterminate Western blot, or 3) a negative HIV RNA test within 45 days of a positive EIA and ART initiation.

    Note: the HIV definitions above are pertinent to the time of diagnosis and treatment initiation.

  3. AHI participants are defined as HIV infected patients on suppressive ART that was initiated within 45 days of AHI diagnosis as defined in protocol section 5.1.2.
  4. CHI participants are defined as HIV infected patients who initiated ART with chronic HIV as defined in protocol section 5.1.2.
  5. On potent antiretroviral therapy, defined as at least 2 nucleoside/nucleotide reverse transcriptase inhibitors plus a non-nucleoside reverse transcriptase inhibitor, integrase inhibitor, or a protease inhibitor without interruption (defined as missing doses for more than two (2) consecutive days or more than four (4) cumulative days) in the 12 weeks prior to entry.

    Other potent fully suppressive antiretroviral combinations will be considered on a case by case basis. Prior changes in or elimination of medications for easier dosing schedule, intolerance, toxicity, or other reasons are permitted if an alternative suppressive regimen was maintained.

  6. Stable ART regimen for minimum of 3 months. NOTE: The ART regimen is defined by current treatment guidelines. Participants may have had one or more changes in their ART regimen for tolerance, change of guidelines, or dosing simplification.
  7. Ability and willingness of participant to continue cART throughout the study.
  8. Plasma HIV 1 RNA below detected limit by conventional assays (limit of detection: 75, 50, 40, or 20 copies/mL) for ˃1 year.

    A single unconfirmed plasma HIV RNA ˃ limit of detection but ˂ 1000 c/mL allowed within the prior 12 months; but none in the preceding 6 months.

  9. Plasma HIV 1 RNA ˂ 50 copies/mL at screening.
  10. CD4+ cell count ˃ 350 cells/mm3 at screening.
  11. No active HCV infection (measureable HCV RNA) within 90 days of enrollment.
  12. No active HBV infection (measureable HBV DNA or HBVsAg+) within 90 days of enrollment.
  13. All female participants participating in sexual activity that could lead to pregnancy must agree to use at least two of the following reliable methods of birth control (at least one of which is a barrier method) for at least 21 days prior to study entry and until 12 weeks after the last dose of the study product: condoms (male or female) with or without a spermicidal agent, diaphragm or cervical cap with spermicide, Intrauterine Device, hormone-based contraceptive, tubal ligation, NuvaRing.
  14. All male participants participating in sexual activity that could lead to pregnancy must agree to use condoms for at least 21 days prior to study entry and until 12 weeks after the last dose of the study product.
  15. Ability and willingness of subject to give written informed consent.
  16. Ability and willingness to provide adequate locator information.
  17. Ability and willingness to communicate effectively with study personnel; considered reliable, willing, and cooperative in terms of compliance with the Protocol requirements.
  18. Adequate vascular access for HXTC infusion and leukapheresis.
  19. Potential participant must have adequate organ function as indicated by the following laboratory values:

Absolute neutrophil count (ANC): ≥ 1,500 /mcL Platelets: ≥ 125,000 / mcL Hemoglobin: ≥ 12 g/dL

Coagulation:

Prothrombin Time or INR: ≤ 1.5 times upper limit of normal (ULN)

Chemistry K+ levels: Within normal limits

Renal:

Serum creatinine (or calculated creatinine clearance* for those with creatinine > 1.3 ULN): ≤ 1.3 times upper limit of normal (ULN); OR Creatinine clearance* ≥ 60 mL/min for potential participants with creatinine levels > 1.3 times institutional ULN

Hepatic Serum total bilirubin: Total bilirubin < 1.5 times the upper limit of the normal range. If total bilirubin is elevated, direct bilirubin must be < 2 times the ULN range.

NOTE: If participant is on an atazanavir containing therapy then a direct bilirubin should be measured instead of the total bilirubin and must be ≤ 1.0mg/dL.

AST (SGOT) and ALT (SGPT): ≤ 2.0 times ULN Alkaline Phosphatase: ≤ 2.5 times ULN

*Creatinine clearance should be calculated per institutional standard.

Exclusion Criteria:

  1. Prior use of any HIV immunotherapy or vaccine within 12 months prior to Screening.
  2. Use of any of the following within 90 days prior to entry: immunomodulatory, cytokine, or growth stimulating factors such as systemic corticosteroids, cyclosporine, methotrexate, azathioprine, anti-CD25 antibody, IFN, interleukin 2 (IL 2), Coumadin, warfarin, or other Coumadin derivative anticoagulants.
  3. Received any infusion blood product, immune globulin, or hematopoietic growth factors within 90 days prior to study entry.
  4. Pregnancy or breast-feeding.
  5. History or other evidence of severe illness, malignancy, immunodeficiency other than HIV, or any other condition that would make the subject unsuitable for the study in the opinion of the investigator.
  6. Use of topical steroids over a total area exceeding 0.5mg/kg/day within 30 days prior to Screening.
  7. Any active malignancy that may require chemotherapy or radiation therapy.
  8. Compulsorily detained (involuntarily incarcerated) for treatment of either a psychiatric illness or a physical illness, e.g., infectious disease. Prisoner recruitment and participation is not permitted.
  9. Any licensed or experimental non-HIV vaccination (e.g., hepatitis B, influenza, pneumococcal polysaccharide) within 4 weeks prior to study entry.
  10. Unable to have a person available to drive participant home at infusion visits.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: TREATMENT
  • Allocation: NON_RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: NONE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: Chronic HIV infection
HXTC infusion
Other Names:
  • HIV 1 antigen expanded specific T cell
Other: Acute HIV infection
HXTC infusion
Other Names:
  • HIV 1 antigen expanded specific T cell

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Safety
Time Frame: 1st day of study treatment until 28 days post last infusion
Occurrence of any ≥ Grade 3 AE including signs/symptoms, lab toxicities, and/or clinical events, that are: possibly, probably or definitely related to study treatment.
1st day of study treatment until 28 days post last infusion

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Secondary Safety
Time Frame: 1st day of study treatment through Week 48
Occurrence of any ≥ Grade 3 AE including signs/symptoms, lab toxicities, and/or clinical events regardless of adjudicated relationship to study treatment.
1st day of study treatment through Week 48

Other Outcome Measures

Outcome Measure
Measure Description
Time Frame
Immune Response
Time Frame: baseline, weeks 1, 2, 4, 6, 8, 13, 24, 36, and 48 post-infusion
Frequency of HIV-1 antigen-specific (gag, pol, nef) CD8+ T-cells by ELIspot
baseline, weeks 1, 2, 4, 6, 8, 13, 24, 36, and 48 post-infusion
Immune Response
Time Frame: baseline, weeks 1, 2, 4, 6, 8, 13, 24, 36, and 48 post-infusion
Change in T cell responses from baseline to post-infusion, measured by frequency of cells secreting IFN-γ by multimer analysis, intracellular cytokine staining and ELIspot.
baseline, weeks 1, 2, 4, 6, 8, 13, 24, 36, and 48 post-infusion
Immune Response
Time Frame: baseline, weeks 1, 2, 4, 6, 8, 13, 24, 36, and 48 post-infusion
Change in cytokine release as measured by multi-color flow cytometry
baseline, weeks 1, 2, 4, 6, 8, 13, 24, 36, and 48 post-infusion
Immune Response
Time Frame: baseline, weeks 1, 2, 4, 6, 8, 13, 24, 36, and 48 post-infusion
Change in polyfunctionality of HIV-1 specific CD8+ and CD4+ T-cells
baseline, weeks 1, 2, 4, 6, 8, 13, 24, 36, and 48 post-infusion
Immune Response
Time Frame: baseline, weeks 1, 2, 4, 6, 8, 13, 24, 36, and 48 post-infusion
Change in proportion of total and HIV-1 specific CD8+ T-cells expressing markers of immune exhaustion
baseline, weeks 1, 2, 4, 6, 8, 13, 24, 36, and 48 post-infusion
Immune Response
Time Frame: baseline, weeks 1, 2, 4, 6, 8, 13, 24, 36, and 48 post-infusion
Change in proportion of CD28+/CD45RA- CD8+ CTL that display effector function from baseline to post-infusion, measured by multi-color flow cytometry.
baseline, weeks 1, 2, 4, 6, 8, 13, 24, 36, and 48 post-infusion
Immune Response
Time Frame: baseline, weeks 1, 2, 4, 6, 8, 13, 24, 36, and 48 post-infusion
Change in antiviral activity of CD8 cells as measured by a viral inhibition assay
baseline, weeks 1, 2, 4, 6, 8, 13, 24, 36, and 48 post-infusion
Immune Response
Time Frame: baseline, weeks 1, 2, 4, 6, 8, 13, 24, 36, and 48 post-infusion
Change in CTL killing of resting CD4+ T cells via a novel latency clearance assay from baseline to week 13 following administration of HXTC
baseline, weeks 1, 2, 4, 6, 8, 13, 24, 36, and 48 post-infusion
Virologic Measures
Time Frame: baseline, 4 and 13 weeks
Change in plasma HIV-1 RNA by single copy assay (SCA)
baseline, 4 and 13 weeks
Virologic Measures
Time Frame: baseline, 4 and 13 weeks
Change in frequency of HIV-1 infection of resting CD4+ T cells using the viral outgrowth assay
baseline, 4 and 13 weeks
Virologic Measures
Time Frame: baseline, 4 and 13 weeks
Change in T-cell associated HIV-1 DNA
baseline, 4 and 13 weeks
Virologic Measures
Time Frame: baseline, 4 and 13 weeks
Change in 2LTR circles in CD4+ T cells
baseline, 4 and 13 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

April 7, 2015

Primary Completion (Actual)

January 19, 2017

Study Completion (Actual)

November 27, 2017

Study Registration Dates

First Submitted

July 24, 2014

First Submitted That Met QC Criteria

July 31, 2014

First Posted (Estimate)

August 4, 2014

Study Record Updates

Last Update Posted (Actual)

October 7, 2019

Last Update Submitted That Met QC Criteria

October 2, 2019

Last Verified

February 1, 2018

More Information

Terms related to this study

Other Study ID Numbers

  • 14-0741
  • 5U19AI096113-05 (U.S. NIH Grant/Contract)

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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