Condition
HLH clinical trials and research
As of November 12, 2026, Find a Trial lists 6 HLH clinical trials that are recruiting, at sites in 4 countries (most in United States (3), United Kingdom (1), Egypt (1)). By phase: Early Phase 1 (1), Phase 1/2 (1), Phase 2 (1). Every study is explained in plain English. Data from ClinicalTrials.gov and NIH RePORTER, updated November 12, 2026.
- 6Clinical trials
- 4Countries
Newest HLH clinical trials
| Study | Phase | Where | Status | Registered |
|---|---|---|---|---|
| National Egyptian HLH Registry for pediatric patients | — | Cairo and 1 other locations | Recruiting | Sep 2, 2026 |
| Observing gut health in children with leukemia | — | London | Recruiting | Mar 28, 2025 |
| Using CD45RA Depleted Stem Cells to Prevent Infections After Transplant | Phase 1/2 | Philadelphia, Pennsylvania | Recruiting | Feb 21, 2025 |
| Validation of the OHI Index for Hematologic Malignancies | — | Kfar Saba and 1 other locations | Recruiting | May 31, 2023 |
| Using Tadekinig Alfa to treat severe side effects from CAR T cell therapy | Early Phase 1 | Philadelphia, Pennsylvania | Recruiting | Mar 31, 2022 |
| Cord blood transplant for children and young adults with blood cancers and disorders | Phase 2 | New York, New York | Recruiting | Nov 25, 2020 |
All recruiting trials (6)
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National Egyptian HLH Registry for pediatric patients
A national HLH registry is being created in Egypt to collect information about pediatric HLH patients to improve understanding and care.
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Observing gut health in children with leukemia
This study looks at how leukemia treatment affects gut health and recovery in children aged 0-16 to see if nutrition plays a role in their healing process.
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Using CD45RA Depleted Stem Cells to Prevent Infections After Transplant
This study is testing whether using special stem cells can help patients with high-risk leukemia recover their immune system faster and prevent infections after a stem cell transplant.
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Validation of the OHI Index for Hematologic Malignancies
This study is testing a new index to see if it can help doctors better understand and predict outcomes for patients with blood cancers who might develop a serious condition called HLH.
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Using Tadekinig Alfa to treat severe side effects from CAR T cell therapy
This study is testing if a new drug called Tadekinig alfa can help people who have severe side effects from CAR T cell therapy feel better.
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Cord blood transplant for children and young adults with blood cancers and disorders
This study is testing a new treatment using chemotherapy followed by a cord blood transplant to see if it can help children and young adults with serious blood cancers and disorders who don't have a matched donor.
Related topics
Quick answers
How many HLH clinical trials are recruiting right now?
6, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.
Where are these trials running?
In 4 countries. The most sites are in United States (3 trials), United Kingdom (1 trial), Egypt (1 trial), Israel (1 trial). Each study page lists its sites and which ones are recruiting.
What phases are they in?
Early Phase 1: 1, Phase 1/2: 1, Phase 2: 1. Trials with no phase listed are usually device, behavioural or observational studies.
How do I join one?
Open a study, check the "Is this trial a fit for you?" section, then contact the study team listed on the page. They will ask a few screening questions. Asking is free and does not commit you to anything. Talk it over with your doctor first.
Find the studies that fit you
A list is a starting point. Tell us your situation in your own words and we'll rank the studies that match and explain why. It's free and needs no account.