ClinicalTrials.gg
RecruitingNCT06462365Updated Apr 15, 2025

Prevention of GvHD in Participants With Hematological Malignancies Undergoing Hematopoietic Stem Cell Transplant (HSCT)

A Phase 1 interventional study of TRX103 in Hematologic Malignancy, GvHD and GVHD,Acute, sponsored by Tr1X, Inc.. Recruiting at 5 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-04-15.

Sponsored by Tr1X, Inc. · Phase 1, Interventional, and Prevention

From the registry’s dates

  • Primary completion was expected by Apr 2026, 6 months ago, but the record still lists the study as recruiting.
  • Started Apr 2024; still recruiting 2 years 7 months later.
Phase
Phase 1
Study type
Interventional
Enrollment
36
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this Phase 1, first in human open-label study is to assess the safety and tolerability of TRX-103 in patients with hematological malignancies undergoing HLA-mismatched related or unrelated hematopoietic stem cell transplantation (HSCT). It is anticipated that up to 36 Subjects will be enrolled during a 18-24 month enrollment period. TRX-103 will be infused one time post HSCT.

02

Conditions studied

  • Hematologic Malignancy
  • GvHD
  • GVHD,Acute
  • GVHD, Chronic
  • Hematopoietic Stem Cell Transplant
  • Acute Lymphoblastic Leukemia, Adult B-Cell
  • Acute Lymphoblastic Leukemia, Adult T-Cell
  • Acute Myeloid Leukemia in Remission
  • Myelodysplastic Syndromes
  • Chronic Myelomonocytic Leukemia, in Remission
  • Cancer Remission

Keywords

  • AML
  • CMML
  • Stem Cell Transplant
  • B-ALL
  • T-ALL
  • Acute GvHD
  • Graft versus Host Disease
  • Chronic GvHD
  • MDS
  • Cellular Therapy
  • Autoimmune
  • T regulatory cells
03

In context

Hematologic Neoplasms

1,444 studies on the registry are indexed under Hematologic Neoplasms; 420 are open to participants now.

This study's planned enrollment of 36 is below the median of 46 across 1,044 interventional studies indexed under Hematologic Neoplasms.

Browse Hematologic Neoplasms studies →

Lead sponsor

Tr1X, Inc. is the lead sponsor of 3 studies on the registry; 3 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years and older
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. Subjects with one of the following hematologic : Acute Lymphoblastic Leukemia (B- or T-ALL), Acute Myeloid Leukemia (AML) and Myelodysplastic Syndrome (MDS), or Chronic myelomonocytic leukemia (CMML)
  2. Males and Females Age ≥ 18 years.
  3. Weight of ≥ 35 Kg.
  4. performance status ≥ 70 %.
  5. Available mismatched related (haploidentical) or unrelated donors for peripheral blood stem cell (PBSC) donation.
  6. Subjects must otherwise fulfill institutional criteria for eligibility to undergo stem cell transplantation.
  7. Absence of uncontrolled bacterial, viral or fungal infection at time of enrollment.
  8. Have adequate organ function.
  9. Subjects > 65-year-old receiving MAC conditioning will only be eligible if they have a HSCT-comorbidity index score \< 5.
  10. Subjects must be able to understand and sign and be willing and able to complete all specified procedures and visits.

Exclusion criteria

Exclusion Criteria:

  1. Prior allogeneic bone marrow, peripheral blood, or cord blood .
  2. Any subject with a history of significant renal, hepatic, pulmonary, or cardiac dysfunction, or on treatment to support cardiac dysfunction.
  3. positive.
  4. Positive hepatitis-B surface antigen. Subject may be included if they are PCR negative.
  5. Positive hepatitis-C antibody with positive Recombinant Immunoblot Assay (RIBA) or PCR unless the subject has received curative anti-viral treatment and confirmed negative viral load by PCR.
  6. Received another agent for treatment of disease understudy within 28 days (or 5 half-lives, whichever is shorter) of conditioning and/or have not recovered from treatment related toxicities.
  7. Subjects with a previous history of Thrombotic Thrombocytopenic Purpura (TTP) or Hemolytic Uremic Syndrome (HUS) who are not good candidates for treatment with sirolimus.
  8. Subjects that are pregnant, breast feeding or aim to become pregnant during the study period. (Subjects must agree to use a highly effective method of ).
  9. Any serious illness, uncontrolled inter-current illness, psychiatric illness, active or uncontrolled infection, or other medical condition or history, including laboratory results.
Terms in these criteria, in plain language(8)

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.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

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.

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.

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.

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.

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.

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.

05

Study design

Phase
Phase 1
Primary purpose
Prevention
Allocation
Not applicable
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
36 participants (estimated)

Study arms

  • Experimental
    TRX-103

    TRX-103 will be infused on time post hematopoietic stem cell transplant (HSCT).

    Biological: TRX103

Interventions

  • BiologicalTRX103

    TRX103 infusion via central line.

06

What researchers measure

Primary outcomes

  1. Safety and tolerability of TRX103 cell infusion through incidence of Adverse events.

    Time frame: Up to a year

  2. Safety of TRX103 determined by stem cell engraftment and donor chimerism after HSCT measured by absolute neutrophil counts and percent donor chimerism.

    Time frame: Up to day 42

  3. Safety of TRX103 determined by negative Replication Competent Lentivirus (RCL).

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

Secondary outcomes

  1. Incidence of Grade II-IV acute GvHD (aGvHD).

    Time frame: Day 0 to Day +100 day

  2. Incidence of Grade III-IV acute GvHD (aGvHD).

    Time frame: Day 0 to Day +100 day

  3. Incidence and severity of chronic GvHD (cGvHD)

    Time frame: Day +100 through Day +365

  4. Overall survival at Day +365.

    Time frame: Up to a year

07

Study locations

5 of 5 sites recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Apr 2024 (actual). Primary completion is estimated for Apr 2026, 24 months after the start.

Of 95 industry-sponsored phase 1 interventional studies under Hematologic Neoplasms, half reached primary completion within 43 months of starting (the median), counting those still running; a quarter within 30 and three quarters within 78. This study's planned 24 months is below that.

Counting every sponsor, half of 159 studies reached it within 51 months; a quarter within 28 and three quarters within 78.

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

Registered
Jun 6, 2024
First posted
Jun 17, 2024
StartActual
Apr 8, 2024
Primary completionEst.
Apr 15, 2026
CompletionEst.
Apr 15, 2027
Last update
Apr 15, 2025
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.
No changes since tracking began. The registry record was last updated on Apr 15, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06462365
Lead sponsor
Tr1X, Inc.
Responsible party
Sponsor
First posted
Jun 17, 2024
Start date
Apr 8, 2024
Primary completion
Apr 15, 2026 (estimated)
Completion
Apr 15, 2027 (estimated)
Last update
Apr 15, 2025

Study contacts

Tr1X Clinical Trials
Contact
Tr1xClinicalTrials@Tr1x.bio
858-283-7879
Maria Grazia Roncarolo, MD
study director · Tr1X, Inc.

Oversight

Data monitoring committee
Yes
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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