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RecruitingNCT07427628PEACOCXUpdated Nov 2, 2026

A Proof-of-concept Trial to EvaluAte the efficaCy and Safety Of Cell Therapy TRX103 in Patients With Active, Non-infectious Uveitis

A Phase 1 interventional study of TRX103 in Non Infectious Uveitis, sponsored by Quan Dong Nguyen. Recruiting at 1 site in United States. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2026-11-02.

Sponsored by Quan Dong Nguyen · Phase 1, Interventional, and Treatment

From the registry’s dates

  • Started Mar 2026; still recruiting 7 months later.
Updated Nov 2, 2026Now RecruitingSite recruiting status changedGo to Updates ↓
Phase
Phase 1
Study type
Interventional
Enrollment
18
Allocation
Non-randomized
Ages
18 Years to 70 Years
Sex
All
01

Study summary

The purpose of this Phase 1, first in uveitis open-label study is to assess the safety and tolerability of TRX-103 in patients with non infectious uveitis (NIU). It is anticipated that up to 18 Subjects will be enrolled during a 18-24 month enrollment period. TRX-103 will be infused one time.

02

Conditions studied

  • Non Infectious Uveitis

Browse trials for

Keywords

  • Uveitis
  • NIU
  • Cell Therapy
  • Treg
  • TRX103
03

In context

Uveitis

299 studies on the registry are indexed under Uveitis; 32 are open to participants now.

This study's planned enrollment of 18 is below the median of 30 across 175 interventional studies indexed under Uveitis.

Browse Uveitis studies →

Lead sponsor

Quan Dong Nguyen is the lead sponsor of 4 studies on the registry; 1 is open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. ≥ 18 to ≤ 70 years of age at time of consent.
  2. Weight of ≥ 40 kg at time of consent.
  3. Subjects must be able to understand and sign and be willing and able to complete all specified procedures and visits.
  4. Diagnosis of active non-infectious uveitis (NIU); intermediate, posterior, or panuveitis at screening as defined as having at least ONE of the following findings:

    1. .≥ 2+ VH (NEI/SUN Scale) OR
    2. Active inflammatory chorioretinal or inflammatory retinal lesion or lesions as defined by fluorescein angiography (FA) or optical coherence tomography (OCT).
  5. Subjects on treatment with may be included if they meet the following:

    1. Prednisone ≤ 20 mg/day; or an equivalent dose of another corticosteroid
    2. Have been on a stable dose for at least 7 days prior to TRX103 dose.
    3. No ongoing treatment with a systemic non-corticosteroid, biologic, small molecules or immunomodulatory agent.
  6. If the patient is on specific therapies such as systemic non-corticosteroid biologic agents, immunomodulatory agents or small molecules etc., appropriate defined in the protocol must be met prior to infusion at Day 0.

Exclusion criteria

Exclusion Criteria:

  1. Any condition preventing evaluation/assessment of both eyes.
  2. Any significant ocular disease that could compromise vision.
  3. Proliferative or severe non-proliferative diabetic retinopathy or macular edema due to non-uveitis causes.
  4. Isolated anterior uveitis.
  5. Macular edema as the only sign of uveitis, defined on OCT without active anterior/posterior inflammatory signs.
  6. Age-related macular degeneration or serpiginous choroidopathy.
  7. Myopic degeneration with active sub-foveal choroidal neovascularization.
  8. Confirmed or suspected current infectious uveitis.
  9. Has ocular masquerade syndrome, like ocular lymphoma.
  10. Any of the following ongoing treatments or anticipated use of any of the following treatments prior to TRX103 dose, for the time periods specified below:

    1. Systemic or immunomodulatory drugs within 4 weeks
    2. Small molecules, e.g., JAK inhibitors or TYK2 inhibitors within 4 weeks
    3. Anti-vascular endothelial growth factor (anti-VEGF) therapy within 8 weeks
    4. TNF inhibitor therapy within 8 weeks
    5. Agents that modulate T cells within 3 months
    6. IL-6 inhibitors within 8 weeks
    7. Therapeutic agents targeted to IL-17 within 4 months
    8. Agents that modulate B cells within 6 months
    9. Therapeutic agents targeted to IL-12 or IL-23 within 6 months
  11. Has received intraocular or periocular (including subtenon, intracanalicular) within 8 weeks prior to TRX103 dose, unless otherwise specified below:

    1. Retisert® or Yutiq® (glucocorticosteroid implants) within 3 years prior or has had complications related to the implant;
    2. Retisert® (glucocorticosteroid implant) removed within 3 months prior or has had complications related to device removal;
    3. Ozurdex® (dexamethasone implant) or Xipere™ (suprachoroidal triamcinolone) within 4 months prior.
  12. Ocular surgery within 90 days prior to TRX103 dose in the study eye, including glaucoma surgery (trabeculectomy or aqueous shunt device), and vitreoretinal surgery. Nd: YAG capsulotomy within 30 days prior to TRX103 dose in the study eye is also an exclusion criterion.
  13. Any of the following cardiovascular risk factors:

    1. History of Class III or IV criteria cardiac insufficiency
    2. Clinically significant cardiac dysrhythmia
    3. > 450 msec (male) or > 470 msec for (female)
    4. Unstable angina in last 3 months;
    5. Myocardial infarction within past year
    6. CABG surgery past year.
  14. Impaired kidney function, defined as any of the following:

    1. Estimated by simplified 4-variable Modification of Diet in Renal Disease (MDRD) formula or as measured by the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI 2021) equation \< 40 mL/min/1.73 m2
    2. Proteinuria, defined as urine protein/creatinine ratio > 25
    3. Symptomatic nephrolithiasis within 6 months of screening.
  15. Subjects who are breastfeeding, pregnant, or planning to become pregnant, or subjects of who are unwilling to apply a highly effective method prior to TRX103 dose.
  16. Anaphylaxis to fluorescein or unwillingness to undergo fluorescein angiograms.
  17. within 6 weeks prior to Day 0 (day of infusion) or expected to need a live vaccine during the study.
  18. Active bacterial, viral, fungal, mycobacterial, or other infections that would require treatment. Active infections must be resolved prior to enrollment.
  19. Have required management of infections as follows:

    1. Currently on suppressive therapy for any chronic infection
    2. Hospitalization for infection within past 60 days
    3. Use of IV or IM antibacterials, antivirals, antifungals, or anti- parasitic agents within past 60 days
    4. History of disseminated herpes zoster, history of or invasive HSV, or recurrent (≥ 2 episodes within last 5 years) localized herpes zoster
    5. Infection with Mycobacterium tuberculosis (TB).
    6. Positive hepatitis-B surface antigen. Subject may be included if they are PCR negative.
    7. virus (HCV RNA detectable in any subject with anti-HCV antibodies).
    8. Positive serology for .
    9. Lab test results indicating active syphilis infection.
  20. History of significant trauma or major surgery within 4 weeks prior to TRX103 dose or scheduled to undergo major surgery during the study.
  21. History of blood transfusion within the last 3 years.
  22. Prior organ transplant, or allogeneic bone marrow, peripheral blood, or cord blood stem cell transplant.
  23. Received another agent or therapy, within 28 days of planned TRX103 infusion (or 5 half-lives, whichever is longer) and/or have not recovered from treatment related toxicities.
  24. Screening laboratory and other analyses show any of the following abnormal results:

    1. Serum or alanine transaminase > 3.0 × ;
    2. ≥ 2 x ULN;
    3. Total white blood cell count \< 2,000/μL;
    4. \< 8 g/dL;
    5. count \< 100,000/μL;
    6. \< 1,200/μL;
    7. Absolute lymphocytes count \< 750/μL.
  25. Subjects with a history of any other significant renal, hepatic, pulmonary, or cardiac dysfunction, or on treatment to support such dysfunction.
  26. Any serious illness, uncontrolled inter-current illness, psychiatric illness, active or uncontrolled infection, or other medical condition or history, including laboratory results, which, in the Investigator's opinion:

    1. Places the subject at increased risk during participation in the study, and/or;
    2. Interferes with the subject's capacity to provide and their participation in the study, and/or; interferes with the interpretation of the results.
  27. Participation in any other clinical trial/ or receiving any other investigational treatment while enrolled in this study.
Terms in these criteria, in plain language(21)

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.

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.

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.

Washout period

A planned gap after a treatment, so that its effects can lessen before the study treatment or a study assessment. Ask the study team and the doctor who prescribed it before changing any medicine.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

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.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

QT and QTc

On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.

The study may name a correction formula and a limit in milliseconds, often around 450–480.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

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.

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.

Live vaccines

Vaccines made with a weakened form of the germ, such as measles–mumps–rubella (MMR), chickenpox and yellow fever. They can be risky when the immune system is weakened. Flu injections are not live; the nasal flu spray is.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

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.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

Absolute neutrophil count (ANC)

The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.

It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
18 participants (estimated)

Study arms

  • Experimental
    TRX-103 Inpatient

    Infusion of TRX103 followed by 8 hour in patient observation period

    Biological: TRX103

  • Experimental
    TRX-103 Outpatient

    Outpatient Infusion of TRX103 followed by outpatient observation period

    Biological: TRX103

Interventions

  • BiologicalTRX103

    TRX103 infusion via peripheral line

06

What researchers measure

Primary outcomes

  1. Incidence of Treatment emergent Adverse events and Serious Adverse events at week 52

    Detailed physical and eye exams, labs and imaging to be performed at study visits for documenting safety and AE's graded using CTCAE V6.0

    Time frame: Up to a year

  2. Incidence of infections, either bacterial, fungal or viral at week 52

    Time frame: Upto 1 year

  3. Negative Replication Competent Lentivirus (RCL) at approximately 3-months, 6-months, and 12-months.

    Participants will be tested via pre-defined blood draw for Replication Competent Lentivirus as per FDA guidance for Testing of Retroviral Vector-Based Human Gene Therapy Products

    Time frame: At 3-month, 6-month, and 1-year.

Secondary outcomes

  1. Change in Best-Corrected Visual acuity (BCVA) at week 52, compared to Baseline

    Time frame: Up to a year

  2. Change in Central subfield thickness on OCT at week 52 from baseline

    Time frame: Upto a year

  3. Change in quality of life at week 52 using NEI VFQ 25 compared to Baseline

    Time frame: Upto a year

07

Study locations

1 of 1 sites recruiting
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Started Mar 2026 (actual). Primary completion is estimated for Dec 2028, 33 months after the start.

How these figures are worked out, and which studies are left out of them.

Registered
Jan 23, 2026
First posted
Feb 23, 2026
StartActual
Mar 18, 2026
Primary completionEst.
Dec 2028
CompletionEst.
Dec 2028
Last update
Nov 2, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Status
Not yet recruiting→Recruiting
changed Nov 2, 2026
Sites
Byers Eye Institute is now Recruiting
Nov 2, 2026
Site contacts
Changed at 1 site. See the sites
Show the site
  • Byers Eye Institute · Palo Alto, United StatesContact n•••@stanford.edu→n•••@stanford.eduContact added n•••@stanford.edu
Nov 2, 2026
Show all 1 update
  1. Nov 2, 2026
    Not yet recruiting→Recruiting
    Byers Eye Institute is now Recruiting
    Site contacts Changed at 1 site. See the sites
    Show the site
    • Byers Eye Institute · Palo Alto, United StatesContact n•••@stanford.edu→n•••@stanford.eduContact added n•••@stanford.edu
    + 4 other changes: identifiers, verification date, date precision and oversight details

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
NCT07427628
Lead sponsor
Quan Dong Nguyen
Responsible party
Quan Dong Nguyen (Professor of Ophthalmology, Stanford University) — Sponsor-investigator
First posted
Feb 23, 2026
Start date
Mar 18, 2026
Primary completion
Dec 2028 (estimated)
Completion
Dec 2028 (estimated)
Last update
Nov 2, 2026

Study contacts

PEACOCX Study Team
Contact
nguyenlabtrials@stanford.edu
650-497-2078
Quan Nguyen, MD
study chair · Stanford University

Oversight

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

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Studies of the drug tested here: Allogeneic Regulatory T-cells TRX103

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