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Showing 1–24 of 63 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Lymphocytopenia Clear all
Recruiting Phase 1Phase 2 Interventional

A Single-arm, Dose-escalation Trial of Long-acting Recombinant Human IL-7 (NT-I7, Efineptakin Alfa) for Idiopathic CD4 Lymphopenia

NCT05600920
View directory record Official record
Conditions
Idiopathic CD4 Lymphopenia
Interventions
Recombinant human interleukin (IL) 7-hyFc
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 75 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 8, 2026 · Synced Jun 11, 2026, 1:33 AM EDT
Completed Phase 1 Interventional

Vaccine Therapy in Treating Patients With Newly Diagnosed Glioblastoma Multiforme

NCT00639639
View directory record Official record
Conditions
Malignant Neoplasms of Brain
Interventions
tetanus toxoid, therapeutic autologous dendritic cells, therapeutic autologous lymphocytes
Biological
Lead sponsor
Gary Archer Ph.D.
Other
Eligibility
18 Years and older
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2022
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 12, 2023 · Synced Jun 11, 2026, 1:33 AM EDT
Completed Phase 3 Interventional Results available

Efficacy, Safety and Pharmacokinetics of Gammaplex in Primary Immunodeficiency Diseases.

NCT00278954
View directory record Official record
Conditions
Primary Immunodeficiency, Common Variable Hypogammaglobulinemia, X-linked Hypogammaglobulinemia, Hypogammaglobulinemia, Immunodeficiency With Hyper-IgM, Wiskott-Aldrich Syndrome
Interventions
Gammaplex (Intravenous immunoglobulin)
Biological
Lead sponsor
Bio Products Laboratory
Other
Eligibility
3 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
7
States / cities
North Palm Beach, Florida • Atlanta, Georgia • Chicago, Illinois + 3 more
Source: ClinicalTrials.gov public record
Updated Jan 23, 2013 · Synced Jun 11, 2026, 1:33 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Cardiopulmonary Bypass-Induced Lymphocytopenia and the Potential Effects of Protease Inhibitor

NCT00385450
View directory record Official record
Conditions
Cardiopulmonary Bypass
Interventions
Nelfinavir/placebo
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 75 Years
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 27, 2015 · Synced Jun 11, 2026, 1:33 AM EDT
Completed Phase 1Phase 2 Interventional

Pilot and Feasibility Study of Hematopoietic Stem Cell Gene Transfer for the Wiskott-Aldrich Syndrome

NCT01410825
View directory record Official record
Conditions
Wiskott-Aldrich Syndrome
Interventions
Retrovirus-mediated gene transfer
Biological
Lead sponsor
David Williams
Other
Eligibility
3 Months to 35 Years · Male only
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 13, 2025 · Synced Jun 11, 2026, 1:33 AM EDT
Completed Phase 3 Interventional

Rapid Infusion of Immune Globulin Intravenous (Human) In Primary Immunodeficiency Patients

NCT00220766
View directory record Official record
Conditions
Immunologic Deficiency Syndrome, Agammaglobulinemia, Severe Combined Immunodeficiency, Wiskott-Aldrich Syndrome, Common Variable Immunodeficiency
Interventions
Immune Globulin Intravenous [Human], 10% Caprylate/Chromatography Purified, Dextrose, 5% in Water
Drug
Lead sponsor
Grifols Therapeutics LLC
Industry
Eligibility
18 Years to 75 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2004
U.S. locations
9
States / cities
Birmingham, Alabama • Denver, Colorado • Washington D.C., District of Columbia + 6 more
Source: ClinicalTrials.gov public record
Updated Sep 24, 2009 · Synced Jun 11, 2026, 1:33 AM EDT
Completed Phase 1 Interventional

Fludarabine Followed by Vaccine Therapy and White Blood Cell Infusions in Treating Patients With Unresectable or Metastatic Melanoma

NCT00091143
View directory record Official record
Conditions
Melanoma (Skin)
Interventions
gp100 antigen, incomplete Freund's adjuvant, keyhole limpet hemocyanin, fludarabine phosphate, peripheral blood stem cell transplantation
Biological · Drug · Procedure
Lead sponsor
Providence Cancer Center, Earle A. Chiles Research Institute
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Apr 3, 2013 · Synced Jun 11, 2026, 1:33 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

Thrombocytopenia and Bleeding in Wiskott-Aldrich Syndrome (WAS) Patients

NCT00909363
View directory record Official record
Conditions
Wiskott-Aldrich Syndrome, Thrombocytopenia, Bleeding
Interventions
Promacta, blood drawing in patients with WAS, blood drawing in healthy controls
Drug · Diagnostic Test
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
3 Months to 80 Years · Male only
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 17, 2019 · Synced Jun 11, 2026, 1:33 AM EDT
Completed Phase 1 Interventional

Bone Marrow Transplant With Abatacept for Non-Malignant Diseases

NCT01917708
View directory record Official record
Conditions
Hurler Syndrome, Fanconi Anemia, Glanzmann Thrombasthenia, Wiskott-Aldrich Syndrome, Chronic Granulomatous Disease, Severe Congenital Neutropenia, Leukocyte Adhesion Deficiency, Shwachman-Diamond Syndrome, Diamond-Blackfan Anemia, Dyskeratosis-congenita, Chediak-Higashi Syndrome, Severe Aplastic Anemia, Thalassemia Major, Hemophagocytic Lymphohistiocytosis, Sickle Cell Disease
Interventions
Abatacept
Drug
Lead sponsor
Emory University
Other
Eligibility
Up to 21 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Dec 25, 2019 · Synced Jun 11, 2026, 1:33 AM EDT
Completed No phase listed Observational

Evaluation of HIV-Negative Patients With Low CD4+ T Lymphocyte Counts

NCT00001319
View directory record Official record
Conditions
CD4 Lymphocytopenia, Idiopathic CD4 Positive T Lymphocytopenia
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
Not listed
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1992 – 2003
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Jun 11, 2026, 1:33 AM EDT
Completed No phase listed Observational

Participation in a Research Registry for Immune Disorders

NCT01953016
View directory record Official record
Conditions
Primary Immunodeficiencies, APECED, CGD, Wiskott-Aldrich Syndrome, SCID
Interventions
Not listed
Lead sponsor
National Human Genome Research Institute (NHGRI)
NIH
Eligibility
1 Month and older
Enrollment
716 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2023
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 19, 2023 · Synced Jun 11, 2026, 1:33 AM EDT
Completed Phase 1 Interventional

Haploidentical Hematopoietic Stem Cell Transplantation Patients With Wiskott-Aldrich Syndrome

NCT00160355
View directory record Official record
Conditions
Wiskott-Aldrich Syndrome
Interventions
Hematopoietic stem cell transplantation, Miltenyi CliniMACS selection system, Fludarabine, Melphalan, Thiotepa
Procedure · Device · Drug
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
Up to 18 Years · Male only
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 25, 2017 · Synced Jun 11, 2026, 1:33 AM EDT
Completed Phase 1 Interventional

Safety Study of IL-7 in HIV-infected Patients (Inspire)

NCT00477321
View directory record Official record
Conditions
HIV Infections, Lymphopenia
Interventions
CYT 107
Drug
Lead sponsor
Cytheris SA
Industry
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
3
States / cities
Miami, Florida • Bethesda, Maryland • Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 17, 2012 · Synced Jun 11, 2026, 1:33 AM EDT
Recruiting Phase 1 Interventional

Safety of Belimumab in People With Idiopathic CD4 Lymphopenia and Autoantibodies (Phoebe)

NCT04097561
View directory record Official record
Conditions
Idiopathic CD4 Lymphopenia
Interventions
Belimumab
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 19, 2026 · Synced Jun 11, 2026, 1:33 AM EDT
Active, not recruiting Phase 2 Interventional

Immune Disorder HSCT Protocol

NCT01821781
View directory record Official record
Conditions
Immune Deficiency Disorders, Severe Combined Immunodeficiency, Chronic Granulomatous Disease, X-linked Agammaglobulinemia, Wiskott-Aldrich Syndrome, Hyper-IgM, DiGeorge Syndrome, Chediak-Higashi Syndrome, Common Variable Immune Deficiency, Immune Dysregulatory Disorders, Hemophagocytic Lymphohistiocytosis, IPEX, Autoimmune Lymphoproliferative Syndrome, X-linked Lymphoproliferative Syndrome
Interventions
Transplant preparative regimen of alemtuzumab, fludarabine, thiotepa, and melphalan
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
Up to 21 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2026
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 18, 2026 · Synced Jun 11, 2026, 1:33 AM EDT
Completed Early Phase 1 Interventional

NT-I7, a Long-Acting Recombinant IL-7 Molecule, as an Immune Reconstitution Strategy for Lymphopenia in Patients With Progressive Multifocal Leukoencephalopathy

NCT04781309
View directory record Official record
Conditions
Progressive Multifocal Leukoencephalopathy
Interventions
NT-I7
Drug
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
18 Years to 120 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 17, 2025 · Synced Jun 11, 2026, 1:33 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

ALI Post Radiation Therapy in Patients With Lung and Esophageal Canter

NCT04668833
View directory record Official record
Conditions
Solid Tumor Malignancies
Interventions
Autologous lymphocyte infusion (ALI)
Procedure
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Jun 11, 2026, 1:33 AM EDT
Completed No phase listed Observational

Targeted Literature Review and Subject Interviews in Wiskott-Aldrich Syndrome (WAS)

NCT03399461
View directory record Official record
Conditions
Wiskott-Aldrich Syndrome
Interventions
Patient Interview guide, Caregiver interview guide, Sociodemographic questionnaire, Pediatric quality of life (PedsQL) questionnaire, Clinical questionnaire
Other
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
12 Years to 30 Years · Male only
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
Collegeville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 13, 2019 · Synced Jun 11, 2026, 1:33 AM EDT
Terminated Phase 2 Interventional

InterLeukin-7 to Improve Clinical Outcomes in Lymphopenic Patients With COVID-19 Infection ( ILIAD-7-US-O )

NCT04426201
View directory record Official record
Conditions
COVID-19, Lymphocytopenia
Interventions
CYT107, Placebo
Drug
Lead sponsor
Revimmune
Industry
Eligibility
25 Years to 80 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
2
States / cities
New York, New York • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 10, 2024 · Synced Jun 11, 2026, 1:33 AM EDT
Completed Phase 2 Interventional Results available

Fludarabine Phosphate, Melphalan, and Low-Dose Total-Body Irradiation Followed by Donor Peripheral Blood Stem Cell Transplant in Treating Patients With Hematologic Malignancies

NCT01529827
View directory record Official record
Conditions
Accelerated Phase Chronic Myelogenous Leukemia, Adult Acute Lymphoblastic Leukemia in Remission, Adult Acute Myeloid Leukemia in Remission, Adult Acute Myeloid Leukemia With 11q23 (MLL) Abnormalities, Adult Acute Myeloid Leukemia With Del(5q), Adult Acute Myeloid Leukemia With Inv(16)(p13;q22), Adult Acute Myeloid Leukemia With t(15;17)(q22;q12), Adult Acute Myeloid Leukemia With t(16;16)(p13;q22), Adult Acute Myeloid Leukemia With t(8;21)(q22;q22), Adult Grade III Lymphomatoid Granulomatosis, Adult Nasal Type Extranodal NK/T-cell Lymphoma, Anaplastic Large Cell Lymphoma, Angioimmunoblastic T-cell Lymphoma, Aplastic Anemia, Burkitt Lymphoma, Childhood Acute Lymphoblastic Leukemia in Remission, Childhood Acute Myeloid Leukemia in Remission, Childhood Chronic Myelogenous Leukemia, Childhood Diffuse Large Cell Lymphoma, Childhood Grade III Lymphomatoid Granulomatosis, Childhood Immunoblastic Large Cell Lymphoma, Childhood Myelodysplastic Syndromes, Childhood Nasal Type Extranodal NK/T-cell Lymphoma, Chronic Myelomonocytic Leukemia, Chronic Phase Chronic Myelogenous Leukemia, Congenital Amegakaryocytic Thrombocytopenia, Diamond-Blackfan Anemia, Extranodal Marginal Zone B-cell Lymphoma of Mucosa-associated Lymphoid Tissue, Hepatosplenic T-cell Lymphoma, Juvenile Myelomonocytic Leukemia, Myelodysplastic/Myeloproliferative Neoplasm, Unclassifiable, Nodal Marginal Zone B-cell Lymphoma, Paroxysmal Nocturnal Hemoglobinuria, Peripheral T-cell Lymphoma, Polycythemia Vera, Post-transplant Lymphoproliferative Disorder, Previously Treated Myelodysplastic Syndromes, Primary Myelofibrosis, Recurrent Adult Acute Lymphoblastic Leukemia, Recurrent Adult Acute Myeloid Leukemia, Recurrent Adult Burkitt Lymphoma, Recurrent Adult Diffuse Large Cell Lymphoma, Recurrent Adult Diffuse Mixed Cell Lymphoma, Recurrent Adult Diffuse Small Cleaved Cell Lymphoma, Recurrent Adult Grade III Lymphomatoid Granulomatosis, Recurrent Adult Hodgkin Lymphoma, Recurrent Adult Immunoblastic Large Cell Lymphoma, Recurrent Adult Lymphoblastic Lymphoma, Recurrent Adult T-cell Leukemia/Lymphoma, Recurrent Childhood Acute Lymphoblastic Leukemia, Recurrent Childhood Acute Myeloid Leukemia, Recurrent Childhood Anaplastic Large Cell Lymphoma, Recurrent Childhood Grade III Lymphomatoid Granulomatosis, Recurrent Childhood Large Cell Lymphoma, Recurrent Childhood Lymphoblastic Lymphoma, Recurrent Childhood Small Noncleaved Cell Lymphoma, Recurrent Cutaneous T-cell Non-Hodgkin Lymphoma, Recurrent Grade 1 Follicular Lymphoma, Recurrent Grade 2 Follicular Lymphoma, Recurrent Grade 3 Follicular Lymphoma, Recurrent Mantle Cell Lymphoma, Recurrent Marginal Zone Lymphoma, Recurrent Mycosis Fungoides/Sezary Syndrome, Recurrent Small Lymphocytic Lymphoma, Recurrent/Refractory Childhood Hodgkin Lymphoma, Refractory Chronic Lymphocytic Leukemia, Refractory Hairy Cell Leukemia, Refractory Multiple Myeloma, Secondary Acute Myeloid Leukemia, Secondary Myelodysplastic Syndromes, Secondary Myelofibrosis, Severe Combined Immunodeficiency, Severe Congenital Neutropenia, Shwachman-Diamond Syndrome, Splenic Marginal Zone Lymphoma, T-cell Large Granular Lymphocyte Leukemia, Waldenstrom Macroglobulinemia, Wiskott-Aldrich Syndrome
Interventions
fludarabine phosphate, melphalan, total-body irradiation, tacrolimus, mycophenolate mofetil, methotrexate, laboratory biomarker analysis, allogeneic hematopoietic stem cell transplantation, peripheral blood stem cell transplantation
Drug · Radiation · Other + 1 more
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
3 Years to 75 Years
Enrollment
94 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Sep 23, 2019 · Synced Jun 11, 2026, 1:33 AM EDT
Active, not recruiting Not applicable Interventional Results available

Lymphocyte Depletion and Change in Lymphocyte Functionality

NCT04273893
View directory record Official record
Conditions
Lymphocyte Depletion
Interventions
SBRT with additional treatment planning dose optimization, SBRT with standard of care planning only, Blood Draws
Radiation · Diagnostic Test
Lead sponsor
University of Virginia
Other
Eligibility
18 Years and older
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Dec 9, 2024 · Synced Jun 11, 2026, 1:33 AM EDT
Completed Phase 1 Interventional

Evaluation of Recovery From Drug-Induced Lymphopenia Using Cytomegalovirus-specific T-cell Adoptive Transfer

NCT00693095
View directory record Official record
Conditions
Glioblastoma
Interventions
CMV-ALT + CMV-DCs, CMV-ALT + Saline
Biological
Lead sponsor
John Sampson
Other
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2015
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 29, 2018 · Synced Jun 11, 2026, 1:33 AM EDT
Completed Phase 1 Interventional

Interleukin-2 Treatment for Wiskott-Aldrich Syndrome

NCT00774358
View directory record Official record
Conditions
Wiskott-Aldrich Syndrome (WAS), X-linked Thrombocytopenia
Interventions
Interleukin-2
Drug
Lead sponsor
Soma Jyonouchi
Other
Eligibility
24 Months and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2016
U.S. locations
3
States / cities
Philadelphia, Pennsylvania • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 15, 2017 · Synced Jun 11, 2026, 1:33 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

Interleukin-7 (CYT107) Treatment of Idiopathic CD4 Lymphocytopenia: Expansion of CD4 T Cells (ICICLE)

NCT00839436
View directory record Official record
Conditions
Idiopathic CD4+ T-Lymphocytopenia
Interventions
CYT107
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 14, 2015 · Synced Jun 11, 2026, 1:33 AM EDT