Early Antenatal Support for Iron Deficiency Anemia (EASI-A)

November 25, 2025 updated by: Thomas Jefferson University

Early Antenatal Support for Iron Deficiency Anemia: A Randomized Controlled Trial of Early Initiation of Intravenous Versus Oral Iron Therapy for Treatment of Iron Deficiency Anemia in Pregnancy

This is a randomized, controlled multi-site trial of iron therapy in pregnancy. The purpose of this research is to see if second trimester initiation of intravenous (IV) iron therapy is better than oral iron therapy for treatment of anemia in pregnancy by improving blood count, quality of life and reducing side effects.

Study Overview

Detailed Description

Pregnant singletons diagnosed with iron deficiency anemia will be enrolled between 14-24 weeks and will be randomized 1:1 to either a course of ferumoxytol (510mg x 2 doses 3-8 days apart) or oral iron (325mg) twice daily.

Study Type

Interventional

Enrollment (Estimated)

80

Phase

  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Singleton gestation
  • Gestational age <24 weeks
  • Baseline Hb ≥9.0 and <11.0 with evidence of iron deficiency anemia

Iron deficiency anemia diagnosed (at any point in patient history) by:

  • Hb<11.0
  • Ferritin<30 and/or total iron saturation <20

Exclusion Criteria:

  • Sickle cell Disease (NOT sickle cell trait)
  • Evidence of acute anemia requiring transfusion or IV iron therapy
  • Major congenital or chromosomal anomaly
  • Previous use of IV iron in this pregnancy
  • Severe cardiac, renal, or liver disease
  • Autoimmune disease (ie Systemic Lupus Erythematosus (SLE)
  • Allergy or contraindication to either study drug
  • History of medication allergy, reaction to IV infusion, or reaction to Feraheme or other IV iron products

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Oral Iron
325mg oral iron (ferrous sulfate) twice daily
325mg oral twice daily
Experimental: Intravenous Iron
510mg ferumoxytol intravenous infusion for two doses total; second dose 3-8 days after first dose.
510mg infusion x 2 doses 3-8 days apart

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in Hemoglobin
Time Frame: 90 days
Change in hemoglboin at day 90 following treatment initiation
90 days

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Anemia resolution
Time Frame: 90 days
Percent of participants in each group with Hb>=11.0 at day 90
90 days
Anemia at Delivery
Time Frame: 9 months
Percent of participants in each group with Hb>=11.0 at delivery
9 months
Need for additional therapy
Time Frame: 9 months
Percent of participants in each group requiring additional therapy for iron deficiency anemia after 28 weeks
9 months
Quality of life scale
Time Frame: 30, 60, 90 days
Linear Analogue Scale Assessment
30, 60, 90 days
Adherence
Time Frame: 90 days
adherence to assigned group. Measured by what % of IV infusions completed of the two required in IV iron group, and for oral iron group, what %pills taken/prescribed based on pill counts
90 days
Need for post partum transfusion
Time Frame: 9 months
Incidence of transfusion after delivery/post partum
9 months
Neonatal outcomes: cord blood iron indices
Time Frame: 9 months
Hb, ferritin, total iron saturation
9 months
Neonatal outcomes: birth weight
Time Frame: 9 months
birth weight (grams)
9 months
Neonatal outcomes gestational age of delivery (weeks)
Time Frame: 9 months
gestational age of delivery (weeks)
9 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

September 29, 2021

Primary Completion (Estimated)

August 30, 2026

Study Completion (Estimated)

December 30, 2026

Study Registration Dates

First Submitted

February 4, 2020

First Submitted That Met QC Criteria

February 18, 2020

First Posted (Actual)

February 20, 2020

Study Record Updates

Last Update Posted (Estimated)

December 2, 2025

Last Update Submitted That Met QC Criteria

November 25, 2025

Last Verified

November 1, 2025

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

After completion of planned primary and secondary analysis, IPD data may be available on request with completion of appropriate data sharing agreements

IPD Sharing Time Frame

1 year after publication of study results

IPD Sharing Access Criteria

After completion of planned primary and secondary analysis, IPD data may be available on request with completion of appropriate data sharing agreements

IPD Sharing Supporting Information Type

  • STUDY_PROTOCOL
  • SAP
  • ICF
  • CSR

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

Yes

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Pregnancy Related

Clinical Trials on Ferrous Sulfate

Subscribe