ClinicalTrials.gg
Enrolling by invitationNCT07803978Updated Sep 4, 2026

Prospective Randomized Controlled Study: Amimaitosai Injection Combined With Corticosteroids for Gastrointestinal aGVHD

An Early Phase 1 interventional study of Amimaitosai injection and Methylprednisolone in Acute Gastrointestinal Graft-versus-host Disease, sponsored by Chinese PLA General Hospital. Enrolling by invitation at 1 site in China. Open to participants aged 14 Years and older. Per ClinicalTrials.gov, last updated 2026-09-04.

Sponsored by Chinese PLA General Hospital · Early Phase 1, Interventional, and Treatment

From the registry’s dates

  • Registered 3 months after the study started (first participant enrolled May 2026, registered Aug 2026).

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Phase
Early Phase 1
Study type
Interventional
Enrollment
60
Allocation
Randomized
Ages
14 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-14

Among 81 studies in Graft vs Host Disease with a site in China — 38 open to participants now, 43 under way, 8 of them phase 3. Graft vs Host Disease · China.

Planned enrollment
33rd of 72
60 · median 53
Started
2026
with 6 others
Phase 1
10 of 81
4 open now
Primary completion
2029-05
later than 39 of 42 live
Registered
79th of 81
by date

Among the 81 studies in Graft vs Host Disease with a site in China, this one is the 33rd largest by planned enrollment of the 72 interventional ones that give a count, is one of 7 that started in 2026, is one of 10 in phase 1, reaches primary completion later than 39 of the 42 other live ones, and was the 79th registered.

Graft vs Host Disease

804 studies on the registry are indexed under Graft vs Host Disease; 149 are open to participants now.

Browse Graft vs Host Disease studies →

Open to participants now

38 of the 81 studies in Graft vs Host Disease with a site in China are open now. Recruiting first, the newest first:

33 more — sign in →

All 38 open studies →

A study can be open while its sites in China have not opened yet or have stopped. Only those recruiting at a site in China →

Who these studies take

Of the 103 Graft vs Host Disease studies recruiting now, 51 (50%) set no upper age limit and 42 (41%) stop at 75 or younger; 42 take children under 18; 9 take healthy volunteers.

This study: 14 Years and older · all sexes · no healthy volunteers.

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02

Study summary

This study focuses on patients with gastrointestinal-dominant acute graft-versus-host disease (aGVHD) after allogeneic hematopoietic stem cell transplantation. AmiMetosai Injection combined with corticosteroids is administered as first-line treatment. The objective is to evaluate the efficacy and safety of AmiMetosai Injection combined with corticosteroids for the treatment of gastrointestinal aGVHD.

Read the detailed description

This study focuses on patients with newly developed gastrointestinal-predominant aGVHD after allogeneic hematopoietic stem cell transplantation. The experimental group receives methylprednisolone 1 mg/kg/d combined with AmiMetosai Injection (1×10⁶ cells/kg, twice weekly for 4 weeks; extended to 8 weeks for partial responders). The control group receives methylprednisolone 2 mg/kg/d monotherapy. The primary endpoint is the Day 28 overall response rate. Secondary endpoints include GVHD-free relapse-free survival and cumulative incidence of relapse. Safety outcomes include adverse events, grade 3-4 toxicities, and abnormal laboratory parameters. Previous studies have reported that mesenchymal stromal cells are safe and effective for steroid-refractory gastrointestinal aGVHD. In this study, the combination is administered with the aim of improving treatment response and reducing corticosteroid-related toxicity.

03

Conditions studied

  • Acute Gastrointestinal Graft-versus-host Disease

Browse trials for

Keywords

  • AmiMetosai Injection
  • umbilical cord mesenchymal stromal cells
  • methylprednisolone
  • gastrointestinal acute graft-versus-host disease
  • allogeneic hematopoietic stem cell transplantation
04

Who can participate

Ages eligible
14 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

  • Malignant hematologic diseases eligible for hematopoietic stem cell transplantation, including MDS-RAEB, acute leukemia, and CML in chronic phase
  • Availability of HLA-matched sibling donors, unrelated donors, or haploidentical donors
  • Age 14 years and older
  • Liver function: and AST ≤ 2.5 times the , ≤ 2 times the upper limit of normal
  • Kidney function: creatinine ≤ upper limit of normal
  • No uncontrolled infections or severe psychiatric disorders
  • Performance status 0-2 ()
  • Signed
  • Patients with acute gastrointestinal after transplantation (according to MAGIC criteria)

Exclusion criteria

Exclusion Criteria:

  • No suitable allogeneic donor
  • Non-gastrointestinal as the main manifestation
  • Either donor or recipient is pregnant
  • Psychiatric illness or other conditions preventing protocol compliance
Terms in these criteria, in plain language(7)

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.

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.

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.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

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.

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.

05

Study design

Phase
Early Phase 1
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
60 participants (estimated)

Study arms

  • Experimental
    Low-dose methylprednisolone combined with AmiMetosai

    Patients in the experimental group receive low-dose methylprednisolone at a daily dose of 1 mg/kg combined with AmiMetosai Injection. AmiMetosai Injection is administered at a cell dose of 1×10⁶ cells/kg per infusion, twice weekly for an initial 4-week treatment course. Patients with partial response after 4 weeks may receive an additional 4-week extended treatment. Patients with complete response, no response or progressive disease will discontinue AmiMetosai Injection treatment ahead of schedule.

    Drug: Amimaitosai injection · Drug: Methylprednisolone

  • Active comparator
    Methylprednisolone monotherapy

    Participants in the control group receive standard first-line treatment with methylprednisolone at a daily dose of 2 mg/kg. No UC-MSC intervention or other additional immunomodulatory agents will be administered during the trial treatment period.

    Drug: Methylprednisolone

Interventions

  • DrugAmimaitosai injection

    Amimaitosai injection (1×10⁶ cells/kg per infusion, twice weekly for 4 weeks; may extend to 8 weeks for partial responders).

  • Experimental Arm:Methylprednisolone at a daily dose of 1 mg/kg. Active Comparator Arm:Methylprednisolone at a daily dose of 2 mg/kg.

06

What researchers measure

Primary outcomes

  1. 28-day overall response rate (ORR) of acute gastrointestinal GVHD

    28-day gastrointestinal aGVHD ORR: CR+PR rate at Day 28 per MAGIC criteria.

    Time frame: 28-day

Secondary outcomes

  1. GVHD-free, relapse-free survival (GRFS)

    GRFS is a composite endpoint measuring the time from treatment initiation to the first occurrence of grade 3-4 acute GVHD, chronic GVHD requiring systemic immunosuppression, hematological relapse, or all-cause death. Patients without any above events are censored at the last valid follow-up date.

    Time frame: 1-year post-randomization

  2. Cumulative incidence of relapse(CIR)

    Competing-risk endpoint for hematological relapse from randomization, with non-relapse death as competing risk.

    Time frame: 1-year post-randomization

07

Study locations

1 site
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 May 2026 (actual). Primary completion is estimated for May 2029, 36 months after the start.

Of 39 non-industry phase 1 interventional studies under Graft vs Host Disease, half reached primary completion within 49 months of starting (the median), counting those still running; a quarter within 28 and three quarters within 69. This study's planned 36 months is below that.

Counting every sponsor, half of 49 studies reached it within 47 months; a quarter within 24 and three quarters within 65.

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

Registered
Aug 19, 2026
First posted
Sep 4, 2026
StartActual
May 1, 2026
Primary completionEst.
May 1, 2029
CompletionEst.
May 1, 2029
Last update
Sep 4, 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.
No changes since tracking began. The registry record was last updated on Sep 4, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07803978
Responsible party
Liping Dou (director, Chinese PLA General Hospital) — Principal investigator
First posted
Sep 4, 2026
Start date
May 1, 2026
Primary completion
May 1, 2029 (estimated)
Completion
May 1, 2029 (estimated)
Last update
Sep 4, 2026

Oversight

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

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