ClinicalTrials.gg
RecruitingNCT07535645BAPTUpdated Sep 16, 2026

Baricitinib for Post-HSCT Persistent Thrombocytopenia

A Phase 1/2 interventional study of Baricitinib in Persistent Thrombocytopenia and Allogeneic Hematopoietic Stem Cell Transplantation, sponsored by Peking University People's Hospital. Recruiting at 1 site in China. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2026-09-16.

Sponsored by Peking University People's Hospital · Phase 1/2, Interventional, and Treatment

From the registry’s dates

  • Started Mar 2026; still recruiting 8 months later.
Phase
Phase 1/2
Study type
Interventional
Enrollment
28
Allocation
Not applicable
Ages
18 Years to 70 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 108 studies in Thrombocytopenia with a site in China — 42 open to participants now, 45 under way, 10 of them phase 3. Thrombocytopenia · China.

Planned enrollment
82nd of 96
28 · median 82
Started
2026
with 5 others
Phase 1/2
4 of 108
1 open now
Primary completion
2027-12
later than 36 of 44 live
Registered
100th of 108
by date
Lead sponsor
6 of 108
Peking University People's Hospital

Among the 108 studies in Thrombocytopenia with a site in China, this one is the 82nd largest by planned enrollment of the 96 interventional ones that give a count, is one of 6 that started in 2026, is one of 4 in phase 1/2, reaches primary completion later than 36 of the 44 other live ones, and was the 100th registered.

Thrombocytopenia

482 studies on the registry are indexed under Thrombocytopenia; 100 are open to participants now.

Browse Thrombocytopenia studies →

Open to participants now

42 of the 108 studies in Thrombocytopenia with a site in China are open now. Recruiting first, the newest first:

36 more — sign in →

All 42 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 66 Thrombocytopenia studies recruiting now, 44 (67%) set no upper age limit and 18 (27%) stop at 75 or younger; 10 take children under 18; 3 take healthy volunteers.

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

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 108 studies in Thrombocytopenia with a site in China, or all of them as a file.
02

Study summary

This is a prospective, open-label phase 1b/2 clinical trial to explore the safety and efficacy profiles of baricitinib in patients with thrombopoietin-receptor-agonist-refractory persistent thrombocytopenia after allogeneic hematopoietic stem cell transplantation.

Read the detailed description

Phase 1 part:

The phase 1b part will use a standard 3+3 design to explore the safety profiles and to establish the recommended phase 2 dose (RP2D) of baricitinib. The initial dose is 2 mg once daily, and the maximum dose is 4 mg once daily. Additional patients may be enrolled to further explore a selected dose defined by dose escalation cohorts (up to 9 patients in each dose level).

Phase 2 part:

The phase 2 part is a single-arm, open-label study to assess the efficacy and safety of baricitinib at RP2D in patients with thrombopoietin-receptor-agonist-refractory persistent thrombocytopenia after allogeneic hematopoietic stem cell transplantation. Patients in phase 1b who were treated with baricitinib at the RP2D will be included in the phase 2 efficacy endpoint analyses.

03

Conditions studied

  • Persistent Thrombocytopenia
  • Allogeneic Hematopoietic Stem Cell Transplantation

Browse trials for

Keywords

  • Persistent thrombocytopenia
  • Allogeneic Hematopoietic Stem Cell Transplantation
  • Baricitinib
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

  • Aged 18-70 years;
  • Underwent ;
  • Meet the diagnostic criteria for delayed engraftment (DPE) or secondary failure of platelet recovery (SFPR);
  • Have platelet counts consistently \<20 ×10\^9/L or transfusion-dependent within 14 days prior to enrollment;
  • Have received adequate and TPO-RA therapy for persistent thrombocytopenia for no less than 4 weeks, with treatment failure or intolerance;
  • Complete donor chimerism.

Exclusion criteria

Exclusion Criteria:

  • Relapse of hematologic or MRD positivity;
  • Active infection;
  • Active ;
  • Thrombotic microangiopathy;
  • Primary graft failure or poor graft function;
  • Presence of other factors that may lead to secondary thrombocytopenia at the time of PT diagnosis;
  • History of systemic herpes zoster infection within 12 weeks prior to enrollment screening;
  • Acute or chronic infection with , , or ;
  • Evidence of active tuberculosis, or history of active tuberculosis without documented standard anti-tuberculosis treatment, or close contact with active tuberculosis without documented standard tuberculosis prophylaxis;
  • Receipt of a within 12 weeks prior to enrollment screening, or planned receipt of a live vaccine during the study period;
  • thromboembolic event within 24 weeks prior to enrollment screening, or current use of anticoagulant medications deemed by the investigator to carry an uncontrollable risk;
  • Estimated \<50 mL/min/1.73 m\^2;
  • Severe pre-existing or current conditions involving the cardiovascular, respiratory, hepatic, gastrointestinal, endocrine, nervous, or neuropsychiatric systems, or other severe or unstable illnesses or laboratory abnormalities that will make the study drug unacceptable for the patient or can interfere study data;
  • Participation in another clinical trial within 30 days prior to enrollment.
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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
28 participants (estimated)

Study arms

  • Experimental
    Baricitinib

    Group A: Open label baricitinib at 2 mg daily (Phase 1) Group B: Open label baricitinib at 4 mg daily (Phase 1) Group C: Open label baricitinib at the RP2D (Phase 2)

    Drug: Baricitinib

Interventions

  • Baricitinib, an orally administered, selective, reversible JAK1/2 inhibitor.

06

What researchers measure

Primary outcomes

  1. Adverse events in the Ib part

    The incidence and severity of adverse events are assessed using the criteria of CTCAE 5.0.

    Time frame: 24 weeks

  2. Overall response rate (ORR) for the IIa part

    The proportion of patients achieving an overall response (OR), defined as a platelet count ≥20×10\^9/L maintained for more than 7 days without transfusion support. Platelet counts obtained within 4 weeks after rescue therapy were not included in the efficacy assessment.

    Time frame: 12 weeks

Secondary outcomes

  1. Overall response rate (ORR) for the Ib part

    The proportion of patients achieving an overall response (OR), defined as a platelet count ≥20×10\^9/L maintained for more than 7 days without transfusion support. Platelet counts obtained within 4 weeks after rescue therapy were not included in the efficacy assessment.

    Time frame: 12 weeks

  2. Complete response (CR)

    The proportion of patients achieving a complete response (CR), defined as a platelet count ≥50×10\^9/L maintained for more than 7 days without transfusion support. Platelet counts obtained within 4 weeks after rescue therapy were not included in the efficacy assessment.

    Time frame: 12 weeks

  3. Durable response

    The proportion of patients achieving a durable response (DR), defined as a platelet count ≥20×10\^9/L maintained for more than 8 weeks without transfusion. Platelet counts obtained within 4 weeks after rescue therapy were not included in the efficacy assessment.

    Time frame: 24 weeks

  4. Time to response

    The time from the date of the first dose of baricitinib to the date of OR or CR.

    Time frame: 12 weeks

  5. Bleeding events

    Clinically significant bleeding as assessed using the world health organization (WHO) bleeding scale: 0, no bleeding; 1, petechiae; 2, mild blood loss; 3, gross blood loss; and 4, debilitating blood loss.

    Time frame: 24 weeks

  6. Rescue medication

    Time and type of rescue medications, defined as any additional treatment intended to prevent bleeding or raise the platelet counts, including a dose increase of more than 10% above baseline of the concomitant medication and any additional PT-modifying agents (e.g., corticosteroids, intravenous immunoglobulin, and platelet transfusions).

    Time frame: 24 weeks

  7. Adverse events in the IIa part

    Adverse events (AEs) are reported and graded in accordance with the Common Terminology Criteria for Adverse Events (CTCAE), version 5.0.

    Time frame: 24 weeks

  8. Overall Survival (OS)

    The overall survival of patients who received at least one dose of baricitinib in the study.

    Time frame: 104 weeks

  9. Transplantation-related mortality (TRM)

    All deaths without relapse or disease progression occurring after transplantation as a direct or indirect consequence of the transplant procedure or associated complications in patients who received at least one dose of baricitinib in the study.

    Time frame: 104 weeks

  10. Relapse or progression of underlying disease

    Relapse or progression of underlying disease of patients who received at least one dose of baricitinib in the study.

    Time frame: 104 weeks

  11. Graft-versus-host disease

    The incidence and severity of acute graft-versus-host disease and chronic graft-versus-host disease in patients who received at least one dose of baricitinib in the study.

    Time frame: 104 weeks

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

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Started Mar 2026 (actual). Primary completion is estimated for Dec 2027, 21 months after the start.

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

Registered
Apr 6, 2026
First posted
Apr 17, 2026
StartActual
Mar 9, 2026
Primary completionEst.
Dec 31, 2027
CompletionEst.
Sep 15, 2029
Last update
Sep 16, 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 16, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07535645
Responsible party
Peng Zhao (Associate Research Fellow, Peking University People's Hospital) — Principal investigator
First posted
Apr 17, 2026
Start date
Mar 9, 2026
Primary completion
Dec 31, 2027 (estimated)
Completion
Sep 15, 2029 (estimated)
Last update
Sep 16, 2026

Study contacts

Peng Zhao
Contact
zpeng702@163.com
+86-18810323668

Oversight

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

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Studies of the drug tested here: Baricitinib

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