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NOT YET RECRUITING
NCT07873970
EARLY_PHASE1

25BT056: Basket Study of Viral Cytotoxic T Lymphocytes

Sponsor: Children's Hospital of Philadelphia

View on ClinicalTrials.gov

Summary

This study is evaluating the safety and effectiveness of virus-specific cytotoxic T lymphocytes (vCTLs) for treating difficult-to-control viral infections caused by cytomegalovirus (CMV), adenovirus (ADV), Epstein-Barr virus (EBV), or BK virus in children, adolescents, and young adults with weakened immune systems. Eligible participants include recipients of hematopoietic stem cell transplantation, solid organ transplantation, and patients with primary immunodeficiency disorders. vCTLs are immune cells collected from a related donor and selected to recognize and fight specific viruses. The cells are manufactured using the CliniMACS® Cytokine Capture System and administered by intravenous infusion. Additional infusions may be given if viral infection persists. The study will assess the safety of vCTL therapy, including the risk of graft-versus-host disease (GVHD) and infusion-related reactions, as well as its ability to reduce viral infection, improve clinical outcomes, and support survival. Participants will be monitored for approximately 12 weeks after their final vCTL infusion. Participants will all receive vCTLs; there is no comparison group. Participants will: 1. Have donor-derived vCTLs manufactured for infusion using the CliniMACS Cytokine Capture System 2. Receive the vCTLs through an intravenous infusion 3. Be monitored for side effects and infusion reactions, viral levels through blood testing, clinical outcomes, including response to treatment, survival, and time without detectable virus

Official title: 25BT056: Basket Study of Viral Cytotoxic T Lymphocytes in Children, Adolescents and Young Adults With Viral Infection Following Allogeneic Hematopoietic Stem Cell Transplant, Solid Organ Transplant or in Primary Immunodeficiencies

Key Details

Gender

All

Age Range

0 Years - 29 Years

Study Type

INTERVENTIONAL

Enrollment

35

Start Date

2026-11-01

Completion Date

2037-11

Last Updated

2026-10-14

Healthy Volunteers

No

Interventions

BIOLOGICAL

Virus-Specific Cytotoxic T Lymphocytes (vCTLs)

Donor-derived virus-specific cytotoxic T lymphocytes (vCTLs) targeting one or more of cytomegalovirus (CMV), adenovirus (ADV), Epstein-Barr virus (EBV), and BK virus. Cells are manufactured using the CliniMACS® Prodigy and CliniMACS Cytokine Capture System (IFN-γ) following stimulation with virus-specific PepTivator® peptide pools. vCTLs are administered by IV infusion at a dose of 2-3 × 10\^4 CD3+ cells/kg recipient weight for HLA-matched related donors or 0.4-0.6 × 10\^4 CD3+ cells/kg recipient weight for HLA-mismatched related donors. Additional infusions of the same dose may be administered every 2 weeks in subjects with ongoing clinically significant viral infection who continue to meet infusion eligibility criteria, for up to 5 total infusions. The intervention is intended for treatment of refractory viral infections in patients with inherited or acquired immunodeficiencies, including recipients of hematopoietic stem cell transplant.