TETRAVI Multivirus CTL for Treatment of EBV, CMV, Adenovirus, and BK Infections Post Allogeneic SCT. — TETRAVI  

Viral Infection Clinical Trial

Official title: Administration of Most Closely HLA-matched Multivirus-specific Cytotoxic T-Lymphocytes for the Treatment of EBV, CMV, Adenovirus, and BK Virus Infections Post Allogeneic Stem Cell Transplant

Status Recruiting

Clinical Trial Summary

The purpose of this study is to use VSTs (virus-specific T cells) from a donor that is a partial HLA (human leukocyte antigen) match with the patient to treat viral infections after an allogeneic hematopoietic stem cell transplant (HSCT). These cells may also have value in CAR-T recipients who have received a product that depletes virus specific T cells.

The patient must have had a myeloablative or non-myeloablative allogeneic HSCT using either bone marrow, single/double umbilical cord blood, or peripheral blood stem cells (PBSC) or CAR T cell product targeting an antigen expressed on virus specific T cells. After a transplant, while the immune system grows back, the patient is at risk for infection. Some viruses can stay in the body for life and are normally controlled by a healthy immune system, but if the immune system is weakened, like after a transplant, they can cause life threatening infections. He/she must have had an infection with one or more of the following viruses -Epstein Barr virus (EBV), cytomegalovirus (CMV), adenovirus (AdV), Human polyomavirus type I (BKV), and human polyomavirus type II (JCV)- that has persisted or recurred despite standard therapy.

In this study, the investigators want to use white blood cells that have been trained to treat viral infections. In an earlier study the investigators showed that treatment with such specially trained T cells has been successful when the cells are made from the transplant donor. However as it takes 1-2 months to make the cells, that approach is not practical for patients who already have an infection. In a subsequent study, the investigators were able to create multivirus-specific T cells (VSTs) from the blood of healthy donors and created a bank of these cells. The investigators then successfully used these banked cells to treat virus infections after a stem cell transplant. In this study the investigators have further modified their production method to decrease the potential side effects and the investigators want to find out if they can use these banked VSTs to fight infections caused by the viruses mentioned above.

Clinical Trial Description

The virus-specific T cells (VSTs) given to the patient will be thawed and injected into their intravenous line. To prevent an allergic reaction if the patient had a prior reaction to blood products like blood transfusions or platelets, prior to receiving the VSTs he/she may be given diphenhydramine (Benadryl) and acetaminophen (Tylenol). The patient will remain in the clinic for at least one hour after the infusion.

All participants on this study will be infused with the same number (dose) of cells. If the patient has persistent infection after the first dose, the investigators would discuss this with the patient and allow them to receive up to four more treatments if there were no complications with prior infusions. These additional treatments might be with cells from the same donor, or if the investigators feel that there is another donor whose cells might be better for the patient, the investigators would use cells from a different donor. This second product will be administered at the same dose level 14 days after the patient's initial infusion, and any additional infusions should be at least 14 days apart. After each VST infusion, the patient will be monitored as described above.

After the patient receives the cells the patient's transplant doctor will monitor the levels of the virus the subject is infected with in their blood.

The patient will continue to be followed by their doctor(s) after the injection. They will be seen in the clinic by research staff for follow up every week for 6 weeks. To learn more about the way the VSTs are working in the patient's body, up to an extra 30-40 ml (6-8 teaspoons) of blood may be taken before the infusion and at week 1 (optional), 2, 4, and 6. Blood should come from the central intravenous line, and should not require extra needle sticks. Depending on clinical and laboratory response, samples may be collected at additional time points.

Any leftover samples of blood may be used to help future research. The specimens may be kept for a long time. These specimens and information about the patient's circumstances may be shared with other cancer researchers. Although there will be a record identifying under what circumstances these specimens were obtained, under all circumstances the patient's identity will be kept confidential.

Study Duration : The patient will be on the study for approximately 42 days after the patient's infusion. If the patient receives additional doses of the T cells as described above, the patient will be followed for 42 days after their last dose of T-cells. ;

Related Conditions & MeSH terms

• Adenoviridae Infections
• Communicable Diseases
• Infections
• Viral Infection
• Virus Diseases

• NCT number: NCT04013802
• Study type: Interventional
• Source: Baylor College of Medicine
• Contact: John Craddock, MD
• Phone: 832-824-1583
• Email: jacraddo@txch.org
• Status: Recruiting
• Phase: Phase 1
• Start date: March 8, 2021
• Completion date: May 1, 2024