Haplo-identical Viral-Specific T-cells for Treatment of Cytomegalovirus and Adenovirus Infections After Hematopoietic Cell Transplantation
Overview
- Phase
- Phase 2
- Intervention
- CliniMACS
- Conditions
- Cytomegalovirus
- Sponsor
- St. Jude Children's Research Hospital
- Enrollment
- 42
- Locations
- 1
- Primary Endpoint
- Degree of reduction of CMV and/or ADV viral load
- Status
- Recruiting
- Last Updated
- 2 months ago
Overview
Brief Summary
The investigators want to learn if CMV- and ADV-specific T-cells (cells that fight infections) isolated (selected) from a donor using an automated medical device can be a safe treatment for treating patients with CMV, and ADV after transplant.This study will test the effects and safety of giving VSTs produced here at St. Jude in treating the participant's infection.
Primary objective
To determine the efficacy of VSTs to achieve a ≥1 log10 reduction in CMV and/or ADV viral load in the peripheral blood 4 weeks after VST infusion.
When the initial viral load is <1 log10 above the threshold of detection, the objective is to achieve a reduction to below the threshold of detection.
Secondary objectives
- Determine the safety of VSTs when used to treat CMV and/or ADV viremia post-HCT.
- Determine the proportion of patients who achieve a negative viral load at 3 months post-infusion.
- Assess the persistence of response for 6 months post-infusion.
Detailed Description
The study will have 2 cohorts. Cohort A will include haploidentical donor who is identical to the stem cell donor. Cohort B will include haploidentical donor who is different from the stem cell donor. Seropositive donors will be screened for the presence of CMV- and ADV-specific T-cells using a functional flow cytometry assay. The donor will be considered suitable if the percentage of CD3+/IFN-γ+ cells is greater than 0.01% of CD3+ T-cells. Donor leukocytes will be collected using the Spectra Optia system. CMV- and ADV-specific T-cells will be isolated from donor leukocytes by 'IFN-γ-capture' technology using the Prodigy device over a 24-36 hour period and infused.
Investigators
Eligibility Criteria
Inclusion Criteria
- •for Patients:
- •Patients who have undergone haploidentical HCT or a matched-sibling/matched-unrelated donor HCT, and have CMV and/or ADV detected by PCR in the peripheral blood refractory to antiviral therapy per institutional BMTCT SOP 20.
- •Definition of "refractory" viremia is persistent positive CMV or ADV viremia after 14 days of treatment per institutional SOP, or an increasing copy number (≥1 log) after 7 days of treatment.
- •Patients have no suspected or confirmed GVHD.
- •Availability of haploidentical donor for isolation of virus-specific T-cells.
- •Have not received a Donor Lymphocyte Infusion in the past 4 weeks.
- •Female patients of childbearing age must have a negative pregnancy test.
- •Subject, parent, or guardian are capable of giving signed informed consent.
- •Patients must have a shortening fraction \>26% or left ventricular ejection fraction \>40%.
- •Patients must have a bilirubin less than or equal to 2.5mg/dL and alanine aminotransferase (ALT) less than or equal to 5 times the upper limit of normal.
Exclusion Criteria
- •for Patients:
- •Active GVHD.
- •Pregnancy.
- •Inability to provide consent.
- •Need for vasopressor or ventilatory support Patients receiving steroids \>0.5 mg/kg prednisone equivalent at the time of VST infusion
- •Donor Lymphocyte Infusion within 4 weeks prior to VST infusion.
- •Receipt of Thymoglobulin or Alemtuzumab within 30 days of VST infusion.
- •Other severe uncontrolled concurrent infections (i.e. bacterial or fungal) that are not yet controlled on antimicrobial therapies.
Arms & Interventions
Cohort B
Cohort B will include haploidentical donor who is different from the stem cell donor
Intervention: CliniMACS
Cohort A
Cohort A will include haploidentical donor who is identical to the stem cell donor. The first 5 patients will be enrolled in Cohort A. If safety criteria are met, cohort B will be open for enrollment.
Intervention: VST infusion
Cohort A
Cohort A will include haploidentical donor who is identical to the stem cell donor. The first 5 patients will be enrolled in Cohort A. If safety criteria are met, cohort B will be open for enrollment.
Intervention: CliniMACS
Cohort B
Cohort B will include haploidentical donor who is different from the stem cell donor
Intervention: VST infusion
Outcomes
Primary Outcomes
Degree of reduction of CMV and/or ADV viral load
Time Frame: 4 weeks after VST infusion
The primary objective of this clinical study is to evaluate the efficacy of adoptively transferred CMV- and ADV-specific haploidentical T-cells in patients who have undergone allogeneic HCT. This primary endpoint is defined as ≥1 log10 reduction in CMV and/or ADV viral load 4 weeks after VST infusion. When the initial viral load is \<1 log10 above the threshold of detection the endpoint will be a reduction to below the threshold of detection. The success rate will be evaluated using descriptive statistics (sample proportion and standard error). Patients with both CMV and ADC detected will count as success if reduction occurs in one or both of CMV and ADV.
Secondary Outcomes
- Incidence of AEs related to grade 3-4 cytokine release syndrome (CRS), or grade 1-2 CRS persist beyond 72 hours despite therapy(4 weeks after VST infusion)
- Incidence of infusion-related grade 3-5 adverse events 24 hours after infusion(24 hours after infusion)
- Incidence of Grade 3-4 Neurotoxicity of any duration(4 weeks after VST infusion)
- Incidence of Grade 3-4 GVHD(4 weeks after VST infusion)
- Incidence of secondary graft failure attributable to VST(4 weeks after VST infusion)
- Persistence of response at 6 months post-infusion(6 months after VST infusion)
- Incidence of grade 3-5 non hematologic toxicities attributable to VST(4 weeks after VST infusion)
- Proportion of patients who achieve a negative viral load result at 3 months(3 months after VST infusion)