ClinicalTrials.gg
RecruitingNCT03266640Updated Oct 23, 2026

Virus Specific Cytotoxic T-Lymphocytes (CTLs) for Refractory Cytomegalovirus (CMV)

A Phase 2 interventional study of viral specific cytotoxic t-lymphocytes in Cytomegalovirus Infections and Primary Immune Deficiency Disorder, sponsored by New York Medical College. Recruiting at 9 sites in United States. Open to participants aged 1 Month to 79 Years. Per ClinicalTrials.gov, last updated 2026-10-23.

Sponsored by New York Medical College · Phase 2, Interventional, and Treatment

From the registry’s dates

  • Started Nov 2018; still recruiting 8 years later.
Phase
Phase 2
Study type
Interventional
Enrollment
20
Allocation
Not applicable
Ages
1 Month to 79 Years
Sex
All
01

Study summary

CMV cytotoxic T cells (CTLs) manufactured with the Miltenyi CliniMACS Prodigy Cytokine Capture System will be administered in children, adolescents and young adults (CAYA) with refractory cytomegalovirus (CMV) infection post Allogeneic Hematopoietic Stem Cell Transplantation (AlloHSCT), with primary immunodeficiencies (PID) or post solid organ transplant.

Funding Source: FDA OOPD

02

Conditions studied

  • Cytomegalovirus Infections
  • Primary Immune Deficiency Disorder

Keywords

  • Cytomegalovirus
  • CMV
  • cytotoxic t-lymphocytes
03

In context

Cytomegalovirus Infections

370 studies on the registry are indexed under Cytomegalovirus Infections; 57 are open to participants now.

This study's planned enrollment of 20 is below the median of 64 across 240 interventional studies indexed under Cytomegalovirus Infections.

Browse Cytomegalovirus Infections studies →

Lead sponsor

New York Medical College is the lead sponsor of 71 studies on the registry; 24 are open to participants now.

Of its 6 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
1 Month to 79 Years
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

1. Patients with CMV infection post HSCT, with primary immunodeficiencies or post solid organ transplant with either

  • Increasing or persistent quantitative qRT-PCR DNA copies despite two weeks of appropriate anti-viral therapy AND/OR
  • Medical intolerance to anti-viral therapies including:
  • ANC \< 500/mm2 secondary to ganciclovir

    • 2 renal toxicity with foscarnet And/or
  • known resistance to ganciclovir and/or foscarnet

Consent: Written given (by patient or legal representative) prior to any study-related procedures.

Performance Status > 30% (Lansky \< 16 yrs and > 16 yrs) Age: 0.1 to 79.99 years Females of with a negative urine pregnancy test

Donor Eligibility Related donor available with a T-cell response to the CMV MACS® GMP PepTivator antigen(s).

a. Third Party Allogeneic Donor: If original donor is not available or does not have a T-cell response: third party related allogeneic donor (family donor > 1 HLA A, B, DR match to recipient) with IgG positive to CMV and/or a T-cell response to the CMV MACS® GMP PepTivator .

AND Allogeneic donor disease screening is complete similar to hematopoietic stem cell donors (Appendix 1).

AND Obtained informed consents by donor or donor legally authorized representative prior to donor collection.

3 Patient exclusion criteria:

A patient meeting any of the following criteria is not eligible for the present study:

Patient with acute > grade 2 or extensive chronic GVHD at the time of CMV CTL infusion Patient receiving (>0.5 mg/kg prednisone equivalent) at the time of CMV CTL infusion Patient treated with donor lymphocyte infusion (DLI) within 4 weeks prior to CMV CTL infusion Thymoglobulin (ATG), Alemtuzumab or T cell monoclonal antibodies within 30 days Patient with poor performance status determined by Karnofsky (patients >16 years) or Lansky (patients ≤16 years) score ≤30% CMV retinitis Concomitant enrollment in another experimental clinical trial investigating the treatment of refractory CMV infection.

Any medical condition which could compromise participation in the study according to the investigator's assessment Known infection Female patient of childbearing age who is pregnant or breast-feeding or not willing to use an effective method of during study treatment.

Known to iron dextran Patients unwilling or unable to comply with the protocol or unable to give informed consent.

Known human anti-mouse antibodies CMV retinitis, meningitis, encephalitis, and/or cerebritis

Terms in these criteria, in plain language(11)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Relapsed and refractory

Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.

Allogeneic and autologous transplant

Stem cell (bone marrow) transplants. Allogeneic uses cells from a donor; autologous uses your own cells, collected earlier and given back.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Karnofsky performance status (KPS)

A 0–100 scale of how well someone can carry out everyday activities. 100 is no complaints and no signs of illness; 70 is able to look after yourself but not to work or keep up normal activity; 50 is needing considerable help and frequent medical care.

Studies often ask for 60 or 70 and above. Your doctor gives the score.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

GVHD (graft-versus-host disease)

After a transplant from a donor, the donor’s immune cells attack the recipient’s body, often the skin, gut or liver.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
20 participants (estimated)

Study arms

  • Experimental
    Refractory CMV

    Patients with refractory CMV will be given one dose of CMV specific CTLs. HLA matched donors will get Dose 2.5 × 10(4) CD3/kg recipient weight; HLA mismatched will get 0.5x10(4) CD3/kg recipient weight. Additional doses may be given for a total of 5 doses if patients do not have a response to the first dose with a reduction in viral load to normal limits.

    Drug: viral specific cytotoxic t-lymphocytes

Interventions

  • Drugviral specific cytotoxic t-lymphocytes

    CMV specific CTLs will be collected from HLA matched or mismatched donors and manufactured in a GMP facility and administered to patients with refractory CMV infection.

    Also known as: CMV CTLs

06

What researchers measure

Primary outcomes

  1. Incidence of Treatment-Emergent Adverse Events [Safety and Tolerability]

    Patients will be monitored for adverse events following the administration of CMV CTLs

    Time frame: Patients will be followed for 12 weeks after each infusion

  2. Incidence of Response to Treatment

    Patients will be followed for improvement in viral infection by monitoring CMV PCR weekly for response to treatment with CTLs

    Time frame: Patients will be followed 12 weeks after each infusion

07

Study locations

9 of 9 sites recruiting
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Updates

1 registry update since Sep 25, 2026
Minor edits
Nothing that changes what the study is or who can join. Edited: identifiers and verification date
1 update, last Oct 23, 2026
Show all 1 update
  1. Oct 23, 2026
    Minor edits only
    + 2 other changes: identifiers and verification date

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT03266640
Lead sponsor
New York Medical College
Responsible party
Mitchell Cairo (Principal Investigator, New York Medical College) — Principal investigator
First posted
Aug 30, 2017
Start date
Nov 1, 2018
Primary completion
Dec 31, 2026 (estimated)
Completion
Dec 31, 2027 (estimated)
Last update
Oct 23, 2026

Study contacts

Mitchell S Cairo, MD
Contact
mitchell_cairo@nymc.edu
914-594-2150
Lauren Harrison, RN
Contact
lauren_harrison@nymc.edu
6172857844
Mitchell S Cairo, MD
principal investigator · New York Medical College

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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