Safety and Efficacy of Allogenic Adoptive Immune Therapy for Immune Reconstitution in Chronic HIV-1 Infected Patients

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

PHASE1/PHASE2

Total Enrollment

20 participants

Study Classification

INTERVENTIONAL

Study Start Date

2016-10-31

Study Completion Date

2022-12-31

Brief Summary

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Combination antiretroviral therapy (ART) effectively suppresses viral replication, leading to a significant immune recovery and a dramatic reduction in the incidence of AIDS-defining events. However, approximately 20% of individuals who exhibit stable viral suppression by ART, but fail to achieve sufficient immune reconstitution and are considered immune nonresponders (INRs). These INRs often experience an increased risk of opportunistic infections and shorter life expectancy compared with matched immune responders.Therefore, efficiently treating these immune nonresponders has become one of the most difficult challenges in the clinic.

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Detailed Description

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There is not a consensus definition of immunologic nonresponder individuals. In this study, we described patients whose cluster of differentiation 4（CD4)+ T-cell count remained below 200 cells/ul after 2 years of effective antiviral as immunologic nonresponders, in which viroimmunological dissociation implies a greater risk of AIDS related and non-AIDS-related illnesses. Immune-based therapy such as interleukin (IL)-2 and IL-7 have been shown to increase CD4 T-cell counts but yielded no clinical benefit in a large randomized study. We have reported that umbilical cord Tissue Mesenchymal Stem Cells (UC-MSC) treatment is safe and can significantly decrease systemic immune overactivation and improve immune reconstitution in INR patients. Meanwhile, we did not find that there was a significantly transitory increase in peripheral CD4 T-cell counts within 1-2 weeks since the onset of each MSC infusion. More important, umbilical cord-MSCs were found to be with a potential to produce IL-7 and T-cell growth factor transforming growth factor (TGF)-β in vitro and in vivo and preferentially expand CD4 T-cell response in the recipients. Therefore, development of novel interventions to reduce immune overactivation/inflammation and enhance immune reconstitution in INRs is a high priority.

Granulocyte colony-stimulating factor (G-CSF)-mobilized donor peripheral blood mononuclear cells (MNCs) are a heterogeneous population of immune cells that have a potential role in immunomodulation and hemopoiesis. Here, we hypothesized that human leukocyte antigen (HLA)-mismatched MNCs transfusion can be used to comprehensively restore or boost the host holistic immune system for INR patients, to the degree similar as immune responders.

The purpose of this study is to investigate the safety and initial efficacy of allogeneic adoptive immune therapy (AAIT) for INR patients. 20 INR patients received i.v. transfusion one round (3 times) of 2.0-3.0\*10E8 cells/kg of MNCs as the treated group. All of them received the conventional treatment for AIDS. The CD4 T cell numbers, HIV reservoir, side effects, symptom improvement, control of opportunistic infections and will be evaluated during the 96-week follow up.

Conditions

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Human Immunodeficiency Virus Disorder of Immune Reconstitution

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Conventional plus AAIT

Participants will receive ART plus a dose of allogenic adoptive immune transfusion (3 times of MNCs transfusions) from day 0 through the week 2 study visit.

Group Type EXPERIMENTAL

Conventional plus AAIT

Intervention Type COMBINATION_PRODUCT

Participants will receive ART and taken i.v., at a dose of 2-3\*10E8 MNCs/kg body at baseline, week 1 and 2.

Interventions

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Conventional plus AAIT

Participants will receive ART and taken i.v., at a dose of 2-3\*10E8 MNCs/kg body at baseline, week 1 and 2.

Intervention Type COMBINATION_PRODUCT

Other Intervention Names

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Conventional plus allogenic adoptive immune treatment

Eligibility Criteria

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Inclusion Criteria

1. Immune non-responders with chronic HIV-1 infection
2. Antiretroviral therapy (ART) for at least 24 months prior to study entry and continue within the 24 months after study entry
3. CD4 count less than or equal to 200 cells/mm3 continuously and more than 50 cells/mm3 before entry and at screening, obtained within 30 days prior to study entry
4. Viral load less than or equal to 50 copies/mL obtained within 12 months prior to study entry
5. Certain specified laboratory values obtained within 30 days prior to study entry. More information on this criterion can be found in the study protocol
6. Documentation that pre-entry specimen for the primary immune activation endpoint responses has been obtained
7. No history of Centers for Disease Control and Prevention (CDC) category C AIDS-related opportunistic infections
8. Karnofsky performance score greater than or equal to 70 within 30 days prior to study entry
9. Ability and willingness to provide informed consent

Exclusion Criteria

1. Coinfection with other virus, including serum hepatitis C virus RNA positive, or one of followings are positive in anti-hepatitis A virus/anti-HDV/anti-hepatitis delta virus plus alanine aminotransferase (ALT) more than 80 IU/L
2. History of combination with other severe diseases including renal, circulatory, respiratory, digestive, endocrine, neural and immunological diseases and tumors
3. White blood cell (WBC) \<2.5\*10E9/L, platlet counts \<50\*10E9/L, Hb \<80g/L, lactate \>2 mmol/L
4. Allergic constitution
5. Pregnancy or lactation
6. Accepting other immunomodulatory drugs within 6 months prior screening
7. Drug addiction
8. Other conditions possibly influencing the trial

Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No