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NCT04691622 · Children's National Research Institute

Adoptive T Lymphocyte Administration for Chronic Norovirus Treatment in Immunocompromised Hosts

(ATLANTIC)

What this study is about

This is a Phase I gradually increasing doses study to evaluate the safety of norovirus -specific T-cell (NST) therapy for chronic norovirus infection in participants following hematopoietic stem cell transplantation (HSCT) or who are immunocompromised due to PID and have not undergone HSCT, or Solid Organ Transplant (SOT) recipients.

View original scientific description

This is a Phase I dose-escalation study to evaluate the safety of norovirus -specific T-cell (NST) therapy for chronic norovirus infection in participants following hematopoietic stem cell transplantation (HSCT) or who are immunocompromised due to PID and have not undergone HSCT, or Solid Organ Transplant (SOT) recipients.

Who can participate

This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.

Inclusion criteria

  • Participant Inclusion Criteria for NST Infusion:
  • Participants must meet one of the following criteria:
  • Recipient of prior myeloablative or non-myeloablative allogeneic hematopoietic stem cell transplant using either bone marrow or peripheral blood stem cells or single or double cord blood OR
  • Primary immunodeficiency disorder (as defined by clinical and laboratory evaluations)81 and have not undergone HSCT, OR
  • Recipients of solid organ transplant.
  • Documentation of chronic norovirus infection: a. Chronic norovirus infections will be defined as having consecutive positive norovirus stool tests (2 or more) spanning a minimum three-month period with attributable signs and symptoms of norovirus disease.
  • Participants receiving steroids for treatment of GVHD or for other reasons, dosage must have been tapered to \<0.5 mg/kg/day of prednisone (or equivalent) a minimum of 7 days prior to infusion. a. Treatment with enteral topical steroids such as Budesonide at standard doses may be continued if previously utilized but should not be newly initiated in the 3 months after NST therapy.
  • For participants who have undergone HSCT, participants must have stable donor chimerism within the 30 days prior to NST infusion. a. Stability will be defined as i. \>95% donor chimerism in CD33 and/or whole blood chimerism. OR ii. \>90% donor chimerism with \<5% change between subsequent tests separated by at least 1 week.
  • For recipients of solid organ transplants, participants must have stable graft function on maintenance immunosuppression, without evidence of rejection in the past 2 months prior to infusion, as defined by: a. Stability of relevant functional testing in the previous 2 months, defined as: i. Renal transplant: renal function ≥ grade 3 per the National Kidney Foundation K/DOQI Clinical Practice Guidelines for Chronic Kidney Disease (2002) ii. Cardiac transplant: maintenance of LVEF \>40% iii. Lung transplant: lack of baseline oxygen requirement iv. Liver transplant: AST/ALT ≤3x upper limit normal and bilirubin ≤2x upper limit normal b. Donor-derived cell free DNA \<2x upper limits for assay in the previous 2 months, c. Stable donor-specific antibody profile in the previous 2 months. i. No increase in antibody titers between most recent testing in the previous 2 months and prior testing.
  • Karnofsky/Lansky score \>50
  • 3 months to 80 years of age at enrollment.
  • ANC ≥500/ul.
  • Hemoglobin ≥7.0g/dl (level can be achieved with transfusion).
  • Platelets ≥20 K/ul (level can be achieved with transfusion).
  • Bilirubin ≤2x upper limit normal.
  • AST ≤3x upper limit normal.
  • Serum creatinine ≤2x upper limit normal OR estimated GFR ≥30 ml/hr.
  • Pulse oximetry of ≥90% on room air.
  • Negative pregnancy test in female participant of childbearing age.
  • Written informed consent and/or signed assent line from participant, parent or guardian. Donor Inclusion Criteria:
  • Donors who have fulfilled eligibility as per United States Food and Drug Administration (FDA) regulations outlined in 21 Code of Federal Regulations (CFR) 1271 subpart C. This includes that donors have been deemed in good health by donor physician based on physical examination and laboratory testing. If a donor has been chosen for the transplant based on urgent medical need, that same donor will also be used for NST generation provided that there are no new reasons for ineligibility since the stem cell collection.
  • For third-party banking, donors must be between 2 to 35 years of age (females) or 2 to 40 years of age (males).
  • Donor or guardian of pediatric donor capable of providing informed consent.
  • Donor (related or unrelated) must have completed Infectious Disease (ID) testing up to 7 days before or after the collection of blood for NST manufacturing. The following tests will be performed:
  • HBc Antibody
  • HCV Antibody
  • HIV 1/2 Antibody
  • HTLV I/II Antibody
  • T. Cruzi Antibody (Chagas)
  • CMV Total Antibody
  • Syphilis (T. Pallidum IgG and IgM)
  • HBV, HCV, HIV Nucleic Acid testing (NAT)
  • Female donors of childbearing age must have a negative pregnancy test and not be lactating.

Exclusion criteria

  • Participants Exclusion Criteria for NST Infusion:
  • Participants receiving biological or immunosuppressive monoclonal antibodies targeting T cells within 28 days prior to NST infusion, including ATG, Alemtuzumab, Basiliximab, Tocilizumab, Brentuximab, or other medications under this category as determined by the investigators. a) If alemtuzumab has been received within 6 weeks prior to NST infusion, plasma levels should be obtained to ensure drug clearance (≤0.16 pg/ml).
  • Participants who have received donor lymphocyte infusion (DLI), chimeric antigen receptor T cell infusion, or other experimental cellular therapies within 28 days prior to NST infusion.
  • Participants with SCID who have undergone α/β TCR depleted HSCT within the past 100 days post-transplant.
  • Participants who have received ruxolitinib or other JAK inhibitors within 7 days prior to NST infusion.
  • Participants with uncontrolled or progressing infections other than norovirus. Uncontrolled infections are defined as bacterial, fungal, or non-targeted viral infections with either clinical signs of worsening despite standard therapy, or chronic gastrointestinal symptoms that may be attributed to the uncontrolled infection. Progressing infection is defined as hemodynamic instability, worsening physical signs, or radiographic findings attributable to infection. Persisting fever without other signs or symptoms will not be interpreted as progressing infection.
  • For bacterial infections, participants must be receiving definitive therapy and have no signs of progressing infection within 7 days prior to NST infusion and or no chronic gastrointestinal symptoms associated with this bacterial infection.
  • For fungal infections, participants must be receiving definitive systemic anti-fungal therapy and have no signs of progressing infection within 7 days prior to NST infusion.
  • Participants must not have other active gastrointestinal infections to which symptoms may be attributable, including parasitic infections (cryptosporidium, giardiasis), viral infections aside from norovirus (CMV colitis, rotavirus, adenovirus), or bacterial infections with C. difficile, Yersinia, Campylobacter, Salmonella, Shigella, or enteroinvasive or enterotoxigenic E. coli. a) Testing for unrelated gastrointestinal (GI) infections must be performed within 14 days prior to NST infusion, and must include: i. Crytosporidium/Giardia testing via antigen or PCR testing. ii. Stool viral testing for rotavirus and adenovirus via antigen or PCR testing. iii. Stool bacterial culture or PCR testing. iv. C. difficile toxin PCR. b) Determination of active infection versus chronic carriage/shedding will be made by the investigators and clinical providers and will depend on the presence of clinical symptoms corresponding with the timing of positive test results, presence of a clinical response to targeted therapy, and by histological or other testing if clinically indicated.
  • Participants with active and uncontrolled relapse of malignancy (if applicable).
  • Failure of primary engraftment is defined as failure to achieve platelet and/or neutrophil engraftment (ANC \<500/ul and/or platelets \<20 K/ul) following HSCT.
  • Secondary graft failure is defined as \<5% donor chimerism (CD3+ or CD34+) or permanent loss of neutrophil and/or platelet engraftment (ANC \<500/ul and/or platelets \<20 K/ul) at any time after primary engraftment.
  • Participants with symptomatic gastrointestinal conditions aside from norovirus, including active inflammatory bowel disease or graft versus host disease (grades 2 to 4).
  • Participants who have received a small bowel transplant.
  • Participants receiving checkpoint inhibitors within the previous 3 months prior to NST infusion, including nivolumab, pembrolizumab, or other related medications.
  • For SOT recipients, alteration in immunosuppression as follows:
  • Any intensification of immunosuppression (including but not limited to pulse dose corticosteroids or new biologic therapies) in the previous 2 months,
  • Alteration of maintenance immunosuppression (including changes in the number of agents or dosing goals) in the previous month.
  • Participants who have received enteral immunoglobulin, nitazoxanide, or other experimental therapies for norovirus infection within 28 days prior to NST infusion.
  • Co-enrollment in other trials is restricted, other than enrollment on natural history or observational studies. Study staff should be notified of co-enrollment as it may require the approval of the investigator or sponsor. Donor Exclusion Criteria: 1\. Donation of cells would pose a physical or psychological risk to the donor

Where

  • Washington D.C., District of Columbia
  • Baltimore, Maryland
  • Bethesda, Maryland

Frequently asked questions

What is a clinical trial?

A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.

Is it safe to participate?

Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.

Will I be compensated?

Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.

Will I receive a placebo instead of treatment?

When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.

Can I leave a trial if I change my mind?

Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.

How long does a clinical trial last?

Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.

Data: ClinicalTrials.gov · synced Jan 26, 2026 · Source of record for eligibility and locations

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What participation can include

  • Study-related care provided by the research team
  • Close monitoring by medical professionals
  • Possible compensation for time and travel*
  • The option to withdraw at any time
  • Contributing to medical research that may help future patients

*Compensation varies by study. Confirm details with coordinator.

Typical next steps

  1. 1.Submit this form
  2. 2.Phone screening
  3. 3.In-person assessment if eligible
  4. 4.Begin participation

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Viral Infection Treatment Options in Washington D.C., District of Columbia

If you're searching for Viral Infection treatment in Washington D.C., participating in a clinical research study may provide access to innovative approaches under expert medical supervision. This study is actively recruiting participants in Washington D.C., Baltimore, Bethesda and surrounding areas.

Clinical trials offer participants the opportunity to receive cutting-edge treatments while contributing to medical research that may help future patients with Viral Infection. All study-related care is provided at no cost to participants.

Local Sites
3 locations in District of Columbia
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Why Consider a Clinical Trial for Viral Infection?

Potential Benefits

  • Access to new treatment approaches before public availability
  • Close monitoring by experienced medical professionals
  • Study-related care provided at no cost
  • Contribute to medical research for Viral Infection

What to Expect

  • Initial screening to determine eligibility
  • Regular check-ups and monitoring visits
  • Possible compensation for time and travel
  • You can withdraw at any time

Frequently Asked Questions About This Viral Infection Study

Important Clinical Trial Information

This information is provided for educational purposes and does not constitute medical advice. Clinical trial participation involves potential risks and benefits. Eligibility requirements apply and will be assessed during the screening process.

Study identifier: NCT04691622. For complete study details, visit ClinicalTrials.gov. Always consult with your healthcare provider before making decisions about your medical care or participating in clinical research.