ClinicalTrials.gg
Not yet recruitingNCT07826676Updated Sep 17, 2026

Use of Bone Marrow Stem Cells (MesenCell) for the Treatment of Patients With Chronic Graft-versus-host Disease

A Phase 1 interventional study of Mesenchymal Stem Cell Infusion in Graft vs Host Disease and Mesenchymal Stem Cell Transplantation, sponsored by Pontifícia Universidade Católica do Paraná. Not yet recruiting at 4 sites in Brazil. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2026-09-17.

Sponsored by Pontifícia Universidade Católica do Paraná · Phase 1, Interventional, and Treatment

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Phase
Phase 1
Study type
Interventional
Enrollment
20
Allocation
Not applicable
Ages
18 Years to 70 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-13

Among 12 studies in Graft vs Host Disease with a site in Brazil — 4 open to participants now, 5 under way, 1 of them phase 3. Graft vs Host Disease · Brazil.

Planned enrollment
10th of 12
20 · median 47
Started
2026
the only one that year
Phase 1
Only one
of the 12
Registered
12th of 12
by date
Lead sponsor
1 of 12
Pontifícia Universidade Católica do Paraná

Among the 12 studies in Graft vs Host Disease with a site in Brazil, this one is the 10th largest by planned enrollment, is the only one that started in 2026, is the only one in phase 1, and was the 12th 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

4 of the 12 studies in Graft vs Host Disease with a site in Brazil are open now. Recruiting first, the newest first:

All 4 open studies →

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

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: 18 Years to 70 Years · all sexes · no healthy volunteers.

The full table on the hub →

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02

Study summary

The purpose of this Phase I clinical trial is to evaluate the safety and potential treatment response of bone marrow-derived mesenchymal stem cells (MesenCell) in adult patients with moderate or severe chronic graft-versus-host disease (cGVHD) that is refractory to corticosteroid treatment. The main questions it seeks to answer are:

  • Is MesenCell infusion safe in patients with corticosteroid-refractory chronic graft-versus-host disease?
  • Can MesenCell treatment improve the clinical response and disease control in these patients?

Participants will receive one to three intravenous infusions of MesenCell, according to the study protocol and be followed for 12 months after the last MesenCell infusion.

Read the detailed description

This is a prospective, single-arm, open-label Phase I clinical trial designed to evaluate the safety and treatment response of bone marrow-derived mesenchymal stem cells (MesenCell) in adult patients with moderate or severe chronic graft-versus-host disease (cGVHD) refractory to corticosteroid treatment.

Approximately 20 participants will be enrolled in the study. Participants will receive one to three intravenous infusions of MesenCell at a dose of 2 × 10⁶ cells/kg, administered at seven-day intervals. The number of infusions will depend on the dose-escalation level to which each participant is assigned.

MesenCell will be administered in combination with standard treatment consisting of corticosteroids at a dose of 1 mg/kg/day and cyclosporine. Participants will undergo clinical and laboratory monitoring throughout the study to evaluate the safety of the intervention and the occurrence, frequency, severity, and causal relationship of adverse events following MesenCell infusion.

Treatment response will be assessed using standardized criteria for chronic graft-versus-host disease, including overall and organ-specific response. The study will also evaluate all-cause mortality, failure-free survival, and changes in corticosteroid and immunosuppressive medication use, including dose reductions, treatment discontinuation, and reduction in the number of immunosuppressive agents.

Participants will be followed for 12 months after administration of the last MesenCell dose. During this period, clinical assessments and review of medical records will be performed to monitor treatment response, disease progression, safety outcomes, need for additional systemic therapy, mortality, and changes in concomitant immunosuppressive treatment.

03

Conditions studied

  • Graft vs Host Disease
  • Mesenchymal Stem Cell Transplantation

Browse trials for

Keywords

  • Advanced Therapy Medicinal Products
  • Security
  • Adverse events
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

  • Age from 18 to 70 years;
  • Male or female sex;
  • Patients after hematopoietic stem cell transplantation (any donor or stem cell source);
  • Presenting with moderate or severe chronic to treatment with and calcineurin inhibitors;
  • Patients who agree to participate in this study and who sign the Form.

Exclusion criteria

Exclusion Criteria:

  • Patients with any concomitant clinical condition that, in the physician's opinion, contraindicates the infusion of bone marrow-containing stem cells;
  • Pregnancy;
  • Patients (or their legal guardians) who do not agree to participate in this study or who do not sign the Form;
  • Patients with recurrent malignant neoplasm.
Terms in these criteria, in plain language(5)

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.

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.

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.

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.

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.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
20 participants (estimated)

Study arms

  • Experimental
    MesenCell

    Patient will receive 1 to 3 intravenous infusions of 2 × 10⁶/kg of Mesenchymal stem cells (MSCs) at 7 day intervals

    Biological: Mesenchymal Stem Cell Infusion

Interventions

  • Administration of Advanced Therapy Medicinal Product in patients with chronic GVHD

    Also known as: Mesenchymal Stem Cell Transplantation

06

What researchers measure

Primary outcomes

  1. Number of Participants With Treatment-Related Adverse Events

    Number of participants experiencing unexpected adverse events or adverse events considered probably or definitely attributable to MesenCell infusion within 30 days after the last dose. Adverse events will be classified according to the Common Terminology Criteria for Adverse Events (CTCAE) version 6.0 (2025). Grade 3 or higher events will be considered for toxicity assessment.

    Time frame: 30 days after the last MesenCell infusion

Secondary outcomes

  1. Overall Treatment Response Rate

    Percentage of participants with partial or complete overall response, according to the 2014 National Institutes of Health (NIH) Consensus Development Project response criteria for chronic graft-versus-host disease.

    Time frame: 6 months after treatment initiation

  2. Change in Overall Response

    Change from baseline in overall severity according to the 2014 National Institutes of Health (NIH) Consensus Development Project criteria. Overall severity is classified as mild, moderate, or severe based on the number of organs involved and the severity scores assigned to each affected organ. Mild disease is defined as involvement of 1 or 2 organs, with no organ scoring more than 1, and a lung score of 0. Moderate disease is defined as involvement of 3 or more organs with no organ scoring more than 1, or at least 1 non-lung organ with a score of 2, or a lung score of 1. Severe disease is defined as at least 1 organ with a score of 3 or a lung score of 2 or 3.

    Time frame: From baseline through 12 months after treatment initiation

  3. Change in Organ-Specific Response Scores

    Change from baseline in organ-specific response scores for the skin, mouth, eyes, gastrointestinal tract, liver, lungs, joints and fascia, and genital tract. Each organ is scored on an ordinal scale from 0 to 3 according to predefined clinical or laboratory criteria specific to the affected organ. A score of 0 indicates no signs or symptoms, while a score of 3 indicates severe involvement. Higher scores indicate greater disease severity and a worse outcome.

    Time frame: From baseline through 12 months after treatment initiation

  4. All-cause mortality

    Time from the first MesenCell infusion to death from any cause. Survival will be estimated at 6 and 12 months and as median overall survival during the follow-up period. Participants who remain alive will be censored at the last contact.

    Time frame: From the first MesenCell infusion through 12 months after the last MesenCell infusion

  5. Failure-Free Survival

    Time from the first MesenCell infusion to the first occurrence of treatment failure, defined as relapse of the underlying disease, progression or reactivation of chronic graft-versus-host disease, or death from any cause. Relapse of the underlying disease will be assessed primarily by complete blood count, with bone marrow aspirate performed when relapse is suspected based on blood count findings. Reactivation of chronic graft-versus-host disease will be assessed at each medical visit according to the NIH organ scoring criteria. Participants without treatment failure will be censored at the last contact. Failure-free survival will be estimated at 6 and 12 months.

    Time frame: From the first MesenCell infusion through 12 months after the last MesenCell infusion

  6. Reduction in Corticosteroid Therapy

    Percentage of participants who have a reduction in corticosteroid dose compared with baseline during the follow-up period. Corticosteroid dose will be assessed using medical records, prescription data, and clinical follow-up.

    Time frame: From treatment initiation through 12 months after the last MesenCell infusion

  7. Discontinuation of Immunosuppressive Therapy

    Percentage of participants who discontinue systemic immunosuppressive therapy during the follow-up period. Immunosuppressive therapy use and discontinuation will be determined from medical records, prescription data, and clinical follow-up.

    Time frame: From treatment initiation through 12 months after the last MesenCell infusion

  8. Time to Best Overall Response

    Time from the first MesenCell infusion to the first documentation of the best overall response according to the 2014 National Institutes of Health (NIH) Consensus Development Project response criteria for chronic graft-versus-host disease.

    Time frame: From the first MesenCell infusion through 12 months after the last MesenCell infusion

07

Study locations

4 sites
08

References and documents

Publications

  • Lee SJ, Wolff D, Kitko C, Koreth J, Inamoto Y, Jagasia M, Pidala J, Olivieri A, Martin PJ, Przepiorka D, Pusic I, Dignan F, Mitchell SA, Lawitschka A, Jacobsohn D, Hall AM, Flowers ME, Schultz KR, Vogelsang G, Pavletic S. Measuring therapeutic response in chronic graft-versus-host disease. National Institutes of Health consensus development project on criteria for clinical trials in chronic graft-versus-host disease: IV. The 2014 Response Criteria Working Group report. Biol Blood Marrow Transplant. 2015 Jun;21(6):984-99. doi: 10.1016/j.bbmt.2015.02.025. Epub 2015 Mar 19. PubMed 25796139 ↗

Individual participant data

Plan to share: No

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

Start is estimated for Oct 2026; primary completion for Sep 2028, 23 months later.

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 23 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
Sep 1, 2026
First posted
Sep 17, 2026
StartEst.
Oct 2026
Primary completionEst.
Sep 2028
CompletionEst.
Oct 2028
Last update
Sep 17, 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 17, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07826676
Lead sponsor
Pontifícia Universidade Católica do Paraná
Collaborators
Hospital Erasto Gaertner, Hospital de Clínicas da Universidade Federal do Paraná, Brazil, Hospital Nossa Senhora das Graças, Financiadora de Estudos e Projetos
Responsible party
Carmen Rebelatto (Research Coordinator, Pontifícia Universidade Católica do Paraná) — Principal investigator
First posted
Sep 17, 2026
Start date
Oct 2026 (estimated)
Primary completion
Sep 2028 (estimated)
Completion
Oct 2028 (estimated)
Last update
Sep 17, 2026

Study contacts

Carmen L K Rebelatto, PhD
Contact
carmen.rebelatto@pucpr.br
+554132711858 ext. 1858
Lidiane M. B. Leite, PhD
Contact
lidiane.leite@pucpr.br
+554132711858 ext. 1858
Carmen L K Rebelatto, PhD
principal investigator · Pontifícia Universidade Católica do Paraná

Oversight

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

Not currently enrolling

This study is not yet recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.

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Discussion

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Studies of the drug tested here: Mesenchymal Stem Cell

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