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ClinicalTrials.gov public records Last synced Oct 19, 2026, 7:14 PM EDT

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Showing 1–24 of 44 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Lymphohistiocytosis Clear all
Active, not recruiting Phase 1Phase 2 Interventional

CD34+ (Non-Malignant) Stem Cell Selection for Patients Receiving Allogeneic Stem Cell Transplantation

NCT01966367
View directory record Official record
Conditions
Bone Marrow Failure Syndrome, Severe Aplastic Anemia, Severe Congenital Neutropenia, Amegakaryocytic Thrombocytopenia, Diamond-Blackfan Anemia, Schwachman Diamond Syndrome, Primary Immunodeficiency Syndromes, Acquired Immunodeficiency Syndromes, Histiocytic Syndrome, Familial Hemophagocytic Lymphocytosis, Lymphohistiocytosis, Macrophage Activation Syndrome, Langerhans Cell Histiocytosis (LCH), Hemoglobinopathies, Sickle Cell Disease, Sickle Cell-beta-thalassemia
Interventions
CD34 Stem Cell Selection Therapy
Biological
Lead sponsor
Diane George
Other
Eligibility
Up to 40 Years
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2030
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 14, 2025 · Synced Oct 19, 2026, 7:14 PM EDT
Recruiting No phase listed Observational

Data Collection Study of Patients With Non-Malignant Disorders Undergoing UCBT, BMT or PBSCT With RIC

NCT04528355
View directory record Official record
Conditions
Primary Immunodeficiency (PID), Congenital Bone Marrow Failure Syndromes, Inherited Metabolic Disorders (IMD), Hereditary Anemias, Inflammatory Conditions
Interventions
data collection
Drug
Lead sponsor
Paul Szabolcs
Other
Eligibility
2 Months to 60 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2028
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 13, 2026 · Synced Oct 19, 2026, 7:14 PM EDT
Completed Phase 2 Interventional Results available

A Pilot Study of Ruxolitinib in Secondary Hemophagocytic Syndrome

NCT02400463
View directory record Official record
Conditions
Hemophagocytic Syndrome (HPS)
Interventions
Ruxolitinib
Drug
Lead sponsor
University of Michigan Rogel Cancer Center
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 25, 2021 · Synced Oct 19, 2026, 7:14 PM EDT
Completed Phase 2 Interventional Results available

T Cell Depletion for Recipients of HLA Haploidentical Related Donor Stem Cell Grafts

NCT00368355
View directory record Official record
Conditions
Acute Lymphoblastic Leukemia, Non Hodgkins Lymphoma, Myelodysplastic Syndrome, Acute Myeloid Leukemia, Chronic Myelogenous Leukemia, Hemophagocytic Lymphohistiocytosis (HLH), Familial Hemophagocytic Lymphohistiocytosis (FLH), Viral-associated Hemophagocytic Syndrome (VAHS), X-linked Lymphoproliferative Disease (XLP)
Interventions
Ara-C, Cyclophosphamide, Campath-1H, Total Body Irradiation, Stem Cell Infusion
Drug · Biological · Radiation + 1 more
Lead sponsor
Baylor College of Medicine
Other
Eligibility
Up to 55 Years
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2016
U.S. locations
2
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 21, 2020 · Synced Oct 19, 2026, 7:14 PM EDT
Not listed Not applicable Interventional

Pilot Study of Unrelated Donor Hematopoietic Stem Cell Transplantation in Patients With Life Threatening Hemophagocytic Disorders

NCT00006056
View directory record Official record
Conditions
Chediak-Higashi Syndrome, Graft Versus Host Disease, X-Linked Lymphoproliferative Syndrome, Familial Erythrophagocytic Lymphohistiocytosis, Hemophagocytic Lymphohistiocytosis, Virus-Associated Hemophagocytic Syndrome
Interventions
anti-thymocyte globulin, busulfan, cyclophosphamide, cyclosporine, etoposide, filgrastim, methotrexate, allogeneic hematopoietic stem cell transplantation
Drug · Procedure
Lead sponsor
Fairview University Medical Center
Other
Eligibility
0 Years to 55 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2000
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 24, 2005 · Synced Oct 19, 2026, 7:14 PM EDT
Active, not recruiting No phase listed Observational

Retrospective Study of Immunotherapy Related Toxicities and Factors Impacting Outcomes in Children and Adults With Cancer

NCT03827343
View directory record Official record
Conditions
Macrophage Activation Syndrome, Primary Hemophagocytic Lymphohistiocytosis
Interventions
Not listed
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
1 Month to 120 Years
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 8, 2026 · Synced Oct 19, 2026, 7:14 PM EDT
Recruiting Phase 2 Interventional

Reduced Intensity Conditioning for Non-Malignant Disorders Undergoing UCBT, BMT or PBSCT

NCT01962415
View directory record Official record
Conditions
Primary Immunodeficiency (PID), Congenital Bone Marrow Failure Syndromes, Inherited Metabolic Disorders (IMD), Hereditary Anemias, Inflammatory Conditions, Systemic Juvenile Idiopathic Arthritis (sJIA), Juvenile Rheumatoid Arthritis (JRA)
Interventions
Hydroxyurea, Alemtuzumab, Fludarabine, Melphalan, Thiotepa
Drug
Lead sponsor
Paul Szabolcs
Other
Eligibility
2 Months to 55 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2027
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 15, 2025 · Synced Oct 19, 2026, 7:14 PM EDT
Recruiting No phase listed Observational

INTO-HLH: A Disease Registry for Patients With Hemophagocytic Lymphohistiocytosis (HLH)

NCT05277272
View directory record Official record
Conditions
Hemophagocytic Lymphohistiocytoses
Interventions
Not listed
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
Not listed
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 24, 2026 · Synced Oct 19, 2026, 7:14 PM EDT
Completed Phase 3 Interventional Results available

Study to Assess the Efficacy and Safety of Emapalumab in Primary Haemophagocytic Lymphohistiocytosis

NCT03312751
View directory record Official record
Conditions
Primary Hemophagocytic Lymphohistiocytosis
Interventions
Emapalumab
Drug
Lead sponsor
Swedish Orphan Biovitrum
Industry
Eligibility
Up to 18 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
10
States / cities
Phoenix, Arizona • Los Angeles, California • Aurora, Colorado + 7 more
Source: ClinicalTrials.gov public record
Updated Mar 12, 2024 · Synced Oct 19, 2026, 7:14 PM EDT
Terminated Not applicable Interventional

Allogeneic Bone Marrow Transplantation in Patients With Primary Immunodeficiencies

NCT00006054
View directory record Official record
Conditions
Immunologic Deficiency Syndromes, Chediak-Higashi Syndrome, Common Variable Immunodeficiency, Graft Versus Host Disease, X-Linked Lymphoproliferative Syndrome, Familial Erythrophagocytic Lymphohistiocytosis, Hemophagocytic Lymphohistiocytosis, X-linked Agammaglobulinemia, Wiskott-Aldrich Syndrome, Chronic Granulomatous Disease, X-linked Hyper IgM Syndrome, Severe Combined Immunodeficiency, Leukocyte Adhesion Deficiency Syndrome, Virus-Associated Hemophagocytic Syndrome
Interventions
anti-thymocyte globulin, busulfan, cyclophosphamide, cyclosporine, etoposide, methotrexate, methylprednisolone, prednisone, Allogeneic Bone Marrow Transplantation
Drug · Procedure
Lead sponsor
Fairview University Medical Center
Other
Eligibility
Up to 35 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2002
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 15, 2009 · Synced Oct 19, 2026, 7:14 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Conditioning Regimen for Allogeneic Hematopoietic Stem-Cell Transplantation

NCT03513328
View directory record Official record
Conditions
Bone Marrow Failure Syndrome, Thalassemia, Sickle Cell Disease, Diamond Blackfan Anemia, Acquired Neutropenia in Newborn, Acquired Anemia Hemolytic, Acquired Thrombocytopenia, Hemophagocytic Lymphohistiocytoses, Wiskott-Aldrich Syndrome, Chronic Granulomatous Disease, Common Variable Immunodeficiency, X-linked Lymphoproliferative Disease, Severe Combined Immunodeficiency, Hurler Syndrome, Mannosidosis, Adrenoleukodystrophy
Interventions
Thiotepa--single daily dose, Thiotepa--escalated dose
Drug
Lead sponsor
University of Florida
Other
Eligibility
3 Months to 39 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Sep 15, 2023 · Synced Oct 19, 2026, 7:14 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Study to Investigate Safety, Efficacy of an Anti-IFNγ mAb in Children With Primary Haemophagocytic Lymphohistiocytosis

NCT01818492
View directory record Official record
Conditions
Primary Haemophagocytic Lymphohistiocytosis
Interventions
NI-0501
Biological
Lead sponsor
Swedish Orphan Biovitrum
Industry
Eligibility
Up to 18 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2019
U.S. locations
8
States / cities
Aurora, Colorado • Wilmington, Delaware • Atlanta, Georgia + 5 more
Source: ClinicalTrials.gov public record
Updated Feb 21, 2023 · Synced Oct 19, 2026, 7:14 PM EDT
Withdrawn Phase 1Phase 2 Interventional

Pre-emptive Anakinra for Cytokine Event Reduction

NCT06703216
View directory record Official record
Conditions
B-Acute Lymphoblastic Leukemia, CAR-T Cell Therapy, Cytokine Release Syndrome, Immune Effector Cell Associated Neurotoxicity Syndrome, Immune Effector Cell Associated Hemophagocytic Lymphohistiocytosis-like Syndrome
Interventions
Anakinra (Kineret®)
Drug
Lead sponsor
Kevin McNerney
Other
Eligibility
1 Year to 25 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Oct 19, 2026, 7:14 PM EDT
Active, not recruiting Phase 1 Interventional

CASPALLO: Allodepleted T Cells Transduced With Inducible Caspase 9 Suicide Gene

NCT00710892
View directory record Official record
Conditions
Acute Lymphoblastic Leukemia, Non-Hodgkin's Lymphoma, Myelodysplastic Syndrome, Chronic Myeloid Leukemia
Interventions
Allodepleted T Cells
Biological
Lead sponsor
Baylor College of Medicine
Other
Eligibility
Up to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2027
U.S. locations
2
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 1, 2026 · Synced Oct 19, 2026, 7:14 PM EDT
Recruiting No phase listed Observational

Hemophagocytic Lymphohistiocytosis (HLH) Evaluation and Research of Clinical, ImmUnoLogic and TranscriptomE Study

NCT06339177
View directory record Official record
Conditions
Lymphohistiocytosis, Hemophagocytic, Secondary Hemophagocytic Lymphohistiocytosis, Macrophage Activation Syndrome, Hyperinflammatory Syndromes
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 120 Years
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2031
U.S. locations
2
States / cities
Bethesda, Maryland • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 10, 2026 · Synced Oct 19, 2026, 7:14 PM EDT
Recruiting Phase 2 Interventional

Ruxolitinib With De-Intensified HLH-94 for the Treatment of Hemophagocytic Lymphohistiocytosis (HLH)

NCT06160791
View directory record Official record
Conditions
Hemophagocytic Lymphohistiocytoses
Interventions
Ruxolitinib, Etoposide, Dexamethasone, Non-interventional Imaging, Research Biopsy, Biospecimen Collection
Drug · Procedure
Lead sponsor
Jerry Lee, MD, MSc, MPhil
Other
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
4
States / cities
Irvine, California • Sacramento, California • San Diego, California + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 21, 2026 · Synced Oct 19, 2026, 7:14 PM EDT
Completed Phase 2 Interventional Results available

A Study to Investigate the Safety and Efficacy of Emapalumab, an Anti-IFN-gamma mAb in Patients With Systemic Juvenile Idiopathic Arthritis (sJIA) or Adult-onset Still's Disease (AOSD) Developing Macrophage Activation Syndrome/Secondary HLH (MAS/sHLH)

NCT03311854
View directory record Official record
Conditions
Macrophage Activation Syndrome, Lymphohistiocytosis, Hemophagocytic, Arthritis, Juvenile, Adult Onset Still Disease
Interventions
Emapalumab
Drug
Lead sponsor
Swedish Orphan Biovitrum
Industry
Eligibility
0 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated May 17, 2022 · Synced Oct 19, 2026, 7:14 PM EDT
Completed Phase 2Phase 3 Interventional Results available

A Study for Long-term Follow-up of Hemophagocytic Lymphohistiocytosis (HLH) Participants Who Received Treatment With Emapalumab (NI-0501), an Anti-interferon Gamma Monoclonal Antibody

NCT02069899
View directory record Official record
Conditions
Hemophagocytic Lymphohistiocytosis
Interventions
Emapalumab
Drug
Lead sponsor
Swedish Orphan Biovitrum
Industry
Eligibility
Not listed
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2021
U.S. locations
5
States / cities
Grand Rapids, Michigan • Chapel Hill, North Carolina • Cincinnati, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 28, 2022 · Synced Oct 19, 2026, 7:14 PM EDT
Completed Phase 2 Interventional Results available

Hybrid Immunotherapy for Hemophagocytic LymphoHistiocytosis

NCT01104025
View directory record Official record
Conditions
Hemophagocytic Lymphohistiocytosis
Interventions
ATG, rabbit, Etoposide, Methotrexate, hydrocortisone, Dexamethasone
Drug
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
Up to 18 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
14
States / cities
Phoenix, Arizona • San Francisco, California • Stanford, California + 11 more
Source: ClinicalTrials.gov public record
Updated Oct 19, 2020 · Synced Oct 19, 2026, 7:14 PM EDT
Recruiting Phase 1 Interventional

Ruxolitinib for Immune Effector Cell Associated Hemophagocytic Lymphohistiocytosis-like Syndrome (RISE)

NCT07424222
View directory record Official record
Conditions
Immune Effector Associated Hemophagocytic Lymphohistiocytosis-like Syndrome (IEC-HS)
Interventions
Ruxolitinib
Drug
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Other
Eligibility
18 Years to 99 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 28, 2026 · Synced Oct 19, 2026, 7:14 PM EDT
Terminated Phase 2Phase 3 Interventional Results available

A Study to Evaluate the Efficacy, Safety and Pharmacokinetics of Emapalumab in Adult Patients With HLH

NCT03985423
View directory record Official record
Conditions
Hemophagocytic Lymphohistiocytoses
Interventions
Emapalumab-Lzsg
Drug
Lead sponsor
Swedish Orphan Biovitrum
Industry
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Oct 6, 2023 · Synced Oct 19, 2026, 7:14 PM EDT
Completed Phase 2 Interventional Results available

Alemtuzumab or Tocilizumab in Combination With Etoposide and Dexamethasone for the Treatment of Adult Patients With Hemophagocytic Lymphohistiocytosis

NCT02385110
View directory record Official record
Conditions
Leukemia
Interventions
Alemtuzumab, Etoposide, Dexamethasone, Methotrexate, Phone Call, Tocilizumab
Drug · Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2023
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 17, 2024 · Synced Oct 19, 2026, 7:14 PM EDT
Active, not recruiting Not applicable Interventional

Allogeneic Hematopoietic Stem Cell Transplant for Patients With Primary Immune Deficiencies

NCT01652092
View directory record Official record
Conditions
SCID, Omenn's Syndrome, Reticular Dysgenesis, Wiskott-Aldrich Syndrome, Bare Lymphocyte Syndrome, Common Variable Immunodeficiency, Chronic Granulomatous Disease, CD40 Ligand Deficiency, Hyper IgM Syndrome, X-linked Lymphoproliferative Disease, Hemophagocytic Lymphohistiocytosis, Griscelli Syndrome, Chediak-Higashi Syndrome, Langerhan's Cell Histiocytosis
Interventions
Alemtuzumab 0.3 mg, Cyclophosphamide, Busulfan, Stem Cell Transplantation, Fludarabine phosphate 40 mg, Melphalan, Alemtuzumab 0.2 mg, Fludarabine phosphate 30 mg, MESNA
Drug · Biological
Lead sponsor
Masonic Cancer Center, University of Minnesota
Other
Eligibility
Up to 50 Years
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2026
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 17, 2026 · Synced Oct 19, 2026, 7:14 PM EDT
Not yet recruiting Phase 2 Interventional

Naive T Cell Deplete Grafts for GVHD Prevention in Non-Malignant Diseases

NCT07660783
View directory record Official record
Conditions
Bone Marrow Failure, Hemoglobinopathies, Primary Immune Deficiency (PID), Autoimmune Cytopenia, Immune Dysregulation, Hemophagocytic Lymphohistiocytosis (HLH), Non Malignant Disorders
Interventions
ALLOGENEIC CD34+ ENRICHED AND CD45RA- DEPLETED PBSCs
Biological
Lead sponsor
Fred Hutchinson Cancer Center
Other
Eligibility
6 Months to 50 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2035
U.S. locations
2
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jun 22, 2026 · Synced Oct 19, 2026, 7:14 PM EDT