Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.

ClinicalTrials.gov 6 recruiting now official registry

Neutropenia clinical trials

Every US clinical trial registered for Neutropenia — phase mix, recruiting status, and the sponsors running them, straight from the NIH ClinicalTrials.gov registry.

14 US clinical trials · 6 currently recruiting

The research picture

Neutropenia has 14 registered US clinical trials, 6 of them open to new participants right now — about 43% of the total.

6
recruiting participants now
43%
of trials open to enrollment
5
in Phase 3–4 (later-stage)
3
top sponsor: National Cancer Institute (NCI)

Counts reflect the public ClinicalTrials.gov registry as last mirrored by PlainTrial. Status and phase are reported by each study's sponsor. This is reference information, not medical advice.

Active & Recent Trials

RECRUITING Phase 3 176 participants

A Study of Mavorixafor in Participants With Congenital and Acquired Primary Autoimmune and Idiopathic Chronic Neutropenic Disorders Who Are Experiencing Recurrent and/or Serious Infections

X4 Pharmaceuticals

NCT06056297

RECRUITING Phase 2 55 participants

Prospective Evaluation of Xerava Prophylaxis in Hematological Malignancy Patients With Prolonged Neutropenia

West Virginia University

NCT05537896

RECRUITING Phase 2 50 participants

Luspatercept for Clonal Cytopenias of Uncertain Significance

Weill Medical College of Cornell University

NCT06788691

RECRUITING Phase 4 25 participants

Letermovir for Secondary Prophylaxis in Solid Organ Transplant Recipients

Tufts Medical Center

NCT05626530

RECRUITING Phase 1 20 participants

A Phase I Study of Mozobil in the Treatment of Patients With WHIMS

National Institute of Allergy and Infectious Diseases (NIAID)

NCT00967785

RECRUITING Early Phase 1 20 participants

Serial Blood Count Study

University of Washington

NCT07066085

COMPLETED 308 participants

Genetic Trial to Study Diarrhea in Patients With Stage III Colon Cancer Who Are Receiving Chemotherapy

Alliance for Clinical Trials in Oncology

NCT00048971

COMPLETED Phase 3 114 participants

Safety and Effectiveness of Granulocyte Transfusions in Resolving Infection in People With Neutropenia (The RING Study)

Carelon Research

NCT00627393

COMPLETED Phase 3 65 participants

A Prospective, Randomized, Phase III Trial of FLAC (5-Fluorouracil, Leucovorin, Adriamycin, Cytoxan) Chemotherapy With GM-CSF (Granulocyte-Macrophage Colony-Stimulating Factor) Versus PIXY 321 in Advanced Breast Cancer

National Cancer Institute (NCI)

NCT00001338

COMPLETED Phase 2 50 participants

SWOG-9400 Combination Chemotherapy With or Without Bone Marrow Transplantation in Treating Patients With Previously Untreated Acute Lymphocytic Leukemia

SWOG Cancer Research Network

NCT00002665

COMPLETED 30 participants

Effect of Body Mass on Filgrastim Pharmacokinetics

Aaron Cumpston, PharmD, BCOP

NCT01719432

COMPLETED Phase 3 10 participants

Voriconazole vs. Amphotericin B in the Treatment of Invasive Aspergillosis

National Institute of Allergy and Infectious Diseases (NIAID)

NCT00001646

COMPLETED Phase 1 3 participants

Irinotecan Plus Cyclosporine and Phenobarbital in Treating Patients With Solid Tumors or Lymphoma

National Cancer Institute (NCI)

NCT00002759

COMPLETED Phase 1

BMS-247550 in Treating Patients With Cancers That Have Not Responded to Previous Therapy

National Cancer Institute (NCI)

NCT00020371

Phase Distribution

PhaseTrial count
Phase 1 4
Phase 2 3
Phase 3 4
Phase 4 1

Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.

Reading the Neutropenia Trial Landscape

ClinicalTrials.gov lists 14 US studies indexed under Neutropenia, and 6 of those are currently open to recruitment — roughly 43% of the total volume on the registry. That ratio is a useful proxy for activity level: a high share of recruiting studies often signals that research interest is current and that new enrollment opportunities are appearing, while a low share typically means the field is dominated by completed or follow-up work where most participant spots have already been filled. These counts reflect the public registry only and include studies at every stage of design, so they should be read as an index of research attention rather than as a measure of treatment availability.

The phase distribution for Neutropenia shows 5 late-stage studies (Phase 3 and Phase 4 combined) alongside 7 earlier-phase entries (Phase 1 through Phase 2). Phase 1 and Phase 2 studies focus on early safety signals, dosing, and preliminary effect, while Phase 3 studies are typically the larger efficacy and safety trials submitted toward regulatory review, and Phase 4 studies follow approved interventions in real-world use. A condition weighted toward later phases often reflects a mature research pipeline with several interventions already close to or past approval, whereas a heavier early-phase tilt suggests the field is still exploring new mechanisms and candidate approaches.

Top sponsor activity for Neutropenia is led by National Cancer Institute (NCI) with 3 indexed trials, alongside 9 other organizations in the top contributor list. The list on this page surfaces up to 14 of the most relevant recent and active entries, ordered with recruiting studies first so practical options are visible. All figures are derived from the public ClinicalTrials.gov dataset maintained by the National Library of Medicine and are reproduced here for reference. Inclusion of a trial, sponsor, or intervention on this page is neither an endorsement nor a recommendation — eligibility, protocol changes, and site-level status can shift frequently, so always verify current details on ClinicalTrials.gov and consult a qualified healthcare provider before acting on anything you see here.

Frequently Asked Questions

How many clinical trials are there for Neutropenia?

PlainTrial tracks 14 US clinical trials for Neutropenia, of which 6 are currently recruiting participants. Data sourced from ClinicalTrials.gov.

How do I find a recruiting trial for Neutropenia?

Use the trial list above filtered by "Recruiting" status, or visit our trial finder at /recruiting to search by condition and state. Always discuss trial participation with your healthcare provider before enrolling.

Is this data current?

Data is sourced from ClinicalTrials.gov and reflects our most recent data pull. Trial status may have changed since then. Always verify current information at ClinicalTrials.gov before making decisions about participation.

Related

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from ClinicalTrials.gov (National Library of Medicine). Consult a qualified professional before making decisions based on this data.

Source: ClinicalTrials.gov (NIH/NLM) ClinicalTrials.gov AACT registry · 2026 Trial counts and statuses sourced from ClinicalTrials.gov. Sponsor counts include both industry and federal/academic sponsors.

Verify with NIH →