- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03159364
Antigen-specific Cytotoxic T Cells in the Treatment of Opportunistic Infections
Phase I/II Multicenter Trial of Antigen-specific Cytotoxic T Cells in the Treatment of Opportunistic Infections
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Background:
Opportunistic infections are major causes of transplant-related morbidity and mortality in immunosuppressed patients, especially in the early post-transplant period. CMV, EBV, adenovirus (AdV), BK virus (BKV) and other viruses or non-viral pathogens may lead to life-threatening infections after transplantation.
Adoptive immunotherapy with cytotoxic T lymphocytes (CTLs) reactive with specific microbial antigens has proven to be effective without stimulating acute graft-versus-host disease (GVHD) owing to the significantly reduced nonspecific alloreactivity. This study aims to evaluate the safety and efficacy of treating opportunistic infections with microbial-specific CTLs in immune compromised patients.
Objective:
Primary study objectives: Infusion of autologous or allogenic pathogen-specific CTL to patients by I.V., to evaluate the safety.
Secondary study objectives: To evaluate the anti-microbial efficacy of IV-infused autologous or allogenic pathogen-specific CTLs.
Design:
Peripheral blood mononuclear cells (PBMC) will be obtained through apheresis. T cells from PBMC will be activated and enriched by dendritic cells with pathogen specific antigens. Cell preparation time is approximately 12-17 days. Subject will receive infusions of 1x105~1x106 cells/kg body weight of CTLs via IV infusion. Patients are followed weekly for one month after the infusion, monthly for 3 months, and then every 3 months until the trial ends.
Study Type
Enrollment (Anticipated)
Phase
- Phase 2
- Phase 1
Contacts and Locations
Study Locations
-
-
Guangdong
-
Shenzhen, Guangdong, China, 518000
- Recruiting
- Shenzhen Geno-Immune Medical Institute
-
Contact:
- Lung-Ji Chang, PhD
- Phone Number: 86-755-86725195
- Email: c@szgimi.org
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
Subjects with or without hematopoietic stem cell transplantation / organ transplant recipients need to meet the following conditions:
- Evidence of CMV, EBV, ADV, BKV or known pathogen infection (viral DNA, immunohistochemical cytology positive); contraindications or invalid to anti-microbial drugs.
- Subjects with virus DNA increased in the 2 consecutive peripheral blood samples (≥ 1000 genomic copies/ml blood) at least 24 hours apart.
- Initial hematopoietic reconstitution: neutrophils (ANC) ≥ 0.5x109 / L, platelet (PLT) ≥ 20x109 / L.
- Patients with pahogen disease (organ/ tissue infiltration) symptoms, fever, diarrhea, or lymphadenopathy, regardless of the level of peripheral blood virus DNA, and confirmed by the presence of viral DNA or microbial antigens within body fluid or biopsy.
- The subject / guardian has signed a written consent form before any trial begins.
Proper renal and hepatic functions (ULN denotes "upper limit of normal range"):
- Creatinine ≤ 2*ULN.
- Bilirubin ≤ 2*ULN.
- SGOT ≤ 3*ULN.
- SGPT≤ 3*ULN.
If CTL is not from the patient's own, then the provider of CTLs needs to meet the following criteria:
- Did not receive chemotherapy or radiotherapy within 4 weeks prior to blood collection, and did not take any steroids for the previous week, did not use Penicillin or β-lactam antibiotics, or the lowest dose of other antibiotics.
- White blood cells ≥ 3,500 / μl, lymphocytes ≥ 750 / μl.
- Obtain a signed informed consent from the patient and / or the guardian or the donor of the BMT recipient.
- Human immunodeficiency virus (HIV), hepatitis B virus (HBV), hepatitis C virus (HCV) or tuberculosis (TB) test is negative.
- Physical examination in line with the standard of healthy blood donors.
Exclusion Criteria:
- Subject infected with HCV (HCV antibody positive), HBV (HBsAg positive), HIV (HIV antibody positive), or HTLV (HTLV antibody positive).
- GVHD (graft-versus-host disease) performance score at II-IV.
- Subject is albumin-intolerant.
- Subject with life expectancy less than 4 weeks.
- Subject participated in other investigational somatic cell therapies within past 30 days.
- Subject with positive pregnancy test result.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: TREATMENT
- Allocation: NA
- Interventional Model: SINGLE_GROUP
- Masking: NONE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
EXPERIMENTAL: Infusion of pathogen-specific CTLs
Repetitive CTL infusions to treat microbial infections
|
Patients will receive approximately 1x10^5~1x10^6 CTLs/kg as a single infusion via IV injection and may receive additional infusions.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Using CTCAE 4 standard to evaluate the level of adverse events after receiving autologous or allogenic pathogen-specific CTL infusion
Time Frame: 24 weeks
|
to evaluate the level of adverse events with CTCAE 4
|
24 weeks
|
Viral load change after Virus-CTL infusion
Time Frame: 2 months
|
The viral load response to the Virus-CTL infusion will be assessed by specific PCR of peripheral blood after infusion.
|
2 months
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
The incidence of CTL infusion syndrome mimicking grade Ⅱ~Ⅳ GVHD within 30 days after the last dose of CTL infusion
Time Frame: 1 months
|
1 months
|
Reconstitution of anti-microbial immunity monitored by flow cytometry
Time Frame: 6 months
|
6 months
|
Number of patients with chronic GVHD-like symptom
Time Frame: 6 months
|
6 months
|
Collaborators and Investigators
Study record dates
Study Major Dates
Study Start (ACTUAL)
Primary Completion (ANTICIPATED)
Study Completion (ANTICIPATED)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
- Pathologic Processes
- Virus Diseases
- Disease Attributes
- DNA Virus Infections
- Bacterial Infections
- Bacterial Infections and Mycoses
- Gram-Positive Bacterial Infections
- Actinomycetales Infections
- Parasitic Diseases
- Tumor Virus Infections
- Mycobacterium Infections
- Herpesviridae Infections
- Infections
- Communicable Diseases
- Mycoses
- Tuberculosis
- Cytomegalovirus Infections
- Epstein-Barr Virus Infections
- Adenoviridae Infections
- Opportunistic Infections
Other Study ID Numbers
- GIMI-IRB-17009
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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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