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ClinicalTrials.gov 4 recruiting now full pipeline small index

Iron-deficiency: full-pipeline trial registry

4 of 17 indexed Iron-deficiency trials are currently recruiting.

Corpus placement: #1,004 of 28,707 conditions by registered trial count.

17 US clinical trials · 4 currently recruiting · #1,004 of 28,707 conditions by registered trial count

Iron-deficiency: 17 US clinical trials tracked, 4 recruiting.

Iron-deficiency is the subject of 17 registered US clinical trials on ClinicalTrials.gov, 4 of them currently open to new participants. 4 are in Phase 3-4 (later-stage) and 3 in Phase 1-2 (earlier-stage). The most active sponsor is University of Illinois at Chicago, running 2 of these trials.

Enrollment posture brief

Registry condition iron-deficiency

OPEN 4 | RECR 24% | LATE 4 | EARLY 3 | RANK #1004 | SPON 2

Nearest open-share peer: Cataract (24% recruiting · 85 trials)

Acute Myeloid Leukemia, in R70.6%Abdominal Aortic Aneurysm52.9%Iron-deficiency (this)24%Acute Lymphoblastic Leukemia23.5%Actinic Keratosis11.8%
Open-enrollment share among volume-matched conditions near Iron-deficiency

Iron-deficiency lists 4 open slots (24% of 17 indexed trials). Peers are matched on registered volume, not therapeutic-area browse lists. How peer matching works →

Key findings

What ClinicalTrials.gov does not surface for Iron-deficiency on its own pages , computed from the registry mirror as of 2026-08-08. Each line carries its own denominator so it can be quoted as it stands.

  1. Iron-deficiency is recruiting below its size-band peers.

    4 of 17 indexed trials (23.5%) are open to enrollment, against a 46.5% average across 27,806 conditions with fewer than 20 trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.

  2. Sponsorship of Iron-deficiency trials is spread across many organizations.

    University of Illinois at Chicago accounts for 2 of 17 trials (11.8%). 14 distinct sponsors appear on at least one study for this condition label.

  3. Typical Iron-deficiency enrolment sits around 66 participants.

    Median target enrolment is 66 among the 17 trials that report a genuine target (sentinel values excluded). 10 of those (58.8%) plan for fewer than 100 participants.

  4. Iron-deficiency research is mostly interventional.

    14 interventional and 3 observational studies make up this index (82.4% interventional). Study type is sponsor-reported on ClinicalTrials.gov.

Phase 23Phase 31Phase 43

Open and recent trials

17 total, page 1 of 1

RECRUITING Phase 4 250 participants

IRONICA: IRON Repletion In Heart Failure - A Comparison of Oral and IV Approaches

Syed Hamza Mufarrih

NCT07053475

RECRUITING Phase 2 120 participants

Darbe Plus IV Iron to Decrease Transfusions While Maintaining Iron Sufficiency in Preterm Infants

University of Washington

NCT05340465

RECRUITING Phase 2 120 participants

IntraVenous Iron in Kids With Iron Deficiency and Scoliosis Study

Columbia University

NCT07217873

RECRUITING Phase 4 66 participants

Impact of Intravenous Iron Repletion On Mechanisms of Exercise InTolerance in HFpEF (IRONMET-HFpEF)

Massachusetts General Hospital

NCT04945707

COMPLETED 1,820 participants

Iron Replacement in Blood Donors

National Institutes of Health Clinical Center (CC)

NCT00327067

COMPLETED Phase 4 219 participants

Prevention of Iron Deficiency in Breastfed Infants

Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

NCT01444261

COMPLETED 190 participants

Iron Deficiency in Female State Fair Attendees

University of Minnesota

NCT03228173

COMPLETED NA 106 participants

Delayed Cord Clamping and Infant Brain Study

University of Rhode Island

NCT01620008

COMPLETED 75 participants

Neuroimaging of Donor Iron Deficient Study

Columbia University

NCT02990559

COMPLETED Phase 2 61 participants

Probiotics in the Treatment of Iron Deficiency in Children With Restless Leg Syndrome

Children's Hospitals and Clinics of Minnesota

NCT01617044

COMPLETED NA 60 participants

Impact of Ferric Citrate vs Ferrous Sulfate on Iron Parameters and Hemoglobin in Individuals With CKD and Iron Deficiency

University of Alabama at Birmingham

NCT02888171

COMPLETED NA 23 participants

Feasibility or Oral Lactoferrin to Prevent Iron Deficiency Anemia in Obese Pregnancy

University of Illinois at Chicago

NCT04810546

COMPLETED NA 22 participants

Effect of Vitamin C on Iron Absorption

Baylor College of Medicine

NCT00570895

COMPLETED NA 20 participants

A Randomized Placebo Controlled Pilot Study of Probiotic Supplementation in At-risk Pregnant Women

University of Illinois at Chicago

NCT03646487

COMPLETED NA 15 participants

Effect of Iron Supplements on the Growth of Enteric Pathogens

Iowa State University

NCT05762380

COMPLETED NA 10 participants

Improving the Iron Status of Athletes With Pre-, Pro- and Synbiotics

King's College

NCT06021171

COMPLETED Phase 3 1 participants

Oral Iron Versus Oral Iron Plus a Web-based Behavioral Intervention in Young Children (IRONCHILD)

Baylor College of Medicine

NCT04371536

Phase Distribution

PhaseTrial count
Phase 2 3
Phase 3 1
Phase 4 3

Named interventions

Most-linked intervention names on Iron-deficiency records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.

Ferrous Sulfate Drug
2 trials
Fer-in-Sol Dietary supplement
1 trials
IRONCHILD Behavioral
1 trials
Jarrow Formulas Oral Bovine Lactoferrin Supplement Dietary supplement
1 trials
ferrous sulfate Drug
1 trials
ferric citrate Drug
1 trials
Probiotics Dietary supplement
1 trials
Partially hydrolyzed guar gum Dietary supplement
1 trials

US sites by state

Facility locations filed on Iron-deficiency trials. A trial with sites in several states counts in each.

Texas 2 trials
New York 2 trials
Minnesota 2 trials
Illinois 2 trials
Iowa 2 trials
Washington 1 trials
Rhode Island 1 trials
Pennsylvania 1 trials

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

What to do with this Iron-deficiency page

17 registered trials, 4 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.

Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.

Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This Iron-deficiency condition card totals 17 registered trials; most-linked intervention Ferrous Sulfate; top US site state Texas. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.