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WithdrawnNCT03777514Updated Sep 11, 2019

Intravenous (IV) Versus Oral Iron Treatment of Iron Deficiency Anemia in the Post-operative Bariatric Surgical Patient

An interventional study of Ferumoxytol and Ferrous sulfate in IDA in the Post-bariatric Surgical Patient, sponsored by Johns Hopkins University. Withdrawn. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2019-09-11.

Sponsored by Johns Hopkins University · Not applicable, Interventional, and Treatment

Why this study was withdrawn
Study wasn't started.
Phase
Not applicable
Study type
Interventional
Enrollment
0
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The aim of the study is to compare two accepted treatments for iron deficiency anemia (oral ferrous sulfate and intravenous ferumoxytol) for efficacy and speed of response in the treatment of iron deficiency anemia (IDA) in the post-operative bariatric surgical patient. In this study, 104 bariatric surgical post-operative patients will be randomly assigned 52 each to oral or 52 to a single dose IV iron treatment using double-blind procedures.

Read the detailed description

Rationale for study: The preponderance of published evidence reports superior efficacy and decreased toxicity of intravenous iron compared to oral iron in correcting anemia and iron parameters in published trials of bariatric surgery patients. Intravenous, and not oral, iron ensures adequate delivery and avoids gastrointestinal toxicities, which may be especially burdensome in these patients who require optimal levels of energy to maintain prudent exercise programs recommended by patients' bariatric practitioners. Uncontradicted published evidence reports safety and efficacy of complete replacement doses of intravenous iron administered in one or two doses of either low molecular weight iron dextran, ferumoxytol, ferric carboxymaltose or iron isomaltoside. A common feature of all studies extant is the lack of reported serious adverse events. Even in patients with minimally invasive procedures such as gastric banding or stapling in whom oral iron may be tolerated, given the often present multiple gastrointestinal perturbations, intravenous iron may simplify care.

Drugs used: The investigators propose to use and FDA approved IV iron preparation - ferumoxytol, administered as two doses (over a interval of 2 to 7 days), each 510 mg over fifteen minutes based on published prospective safety and efficacy data and compare the effectiveness of the treatment to the American Metabolic and Bariatric Associations recommended treatment for iron deficiency anemia in the post-operative bariatric patients of oral iron ferrous sulphate 325 mg twice daily for 6 weeks.

02

Conditions studied

  • IDA in the Post-bariatric Surgical Patient
03

In context

Anemia, Iron-Deficiency

644 studies on the registry are indexed under Anemia, Iron-Deficiency; 105 are open to participants now.

Browse Anemia, Iron-Deficiency studies →

Lead sponsor

Johns Hopkins University is the lead sponsor of 1,783 studies on the registry; 313 are open to participants now.

Of its 203 completed or terminated interventional studies of FDA-regulated products, 140 (69%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Aged ≥ 18 years
  • Patients who have undergone a Roux-en Y Gastric Bypass or Vertical Sleeve Gastrectomy and are at least 3 months or more out from surgery.
  • Iron deficiency anemia defined as iron deficient with either ferritin \< 20 mcg/l, transferrin saturation (TSAT) \< 19%, or anemia with Hgb \< 13 g/dL for both males and females.
  • Willingness to use contraceptive to avoid pregnancy: Women have to be surgically sterile, post menopausal or use one of the following contraceptives during the whole study period and after the study has ended for at least five times the plasma biological half-life of the investigational medicinal product: intrauterine devices or hormonal contraceptives (contraceptive pills, implants, transdermal patches, hormonal vaginal devices, or injections with prolonged release).
  • Willingness to participate and signing the informed consent form.

Exclusion criteria

Exclusion Criteria:

  • Iron overload or disturbances in utilization of iron (e.g. hemochromatosis and hemosiderosis)
  • Decompensated liver cirrhosis or active hepatitis (ALT > 3 times upper limit of normal)
  • Serum ferritin > 500 ng/mL or transferrin saturation > 40%
  • Active acute or chronic infections (assessed by clinical judgment that may be indicated by White Blood Cells (WBC) and C-Reactive Protein (CRP) when these are available)
  • Rheumatoid arthritis with symptoms or signs of active inflammation
  • Pregnant and nursing women
  • History of multiple allergies
  • Known hypersensitivity to ferumoxytol or oral iron or any excipients in the drug products
  • Previous IV iron treatment for IDA
  • Other iron treatment or blood transfusion within 4 weeks prior to the screening or treatment visit
  • Planned elective surgery during the study
  • Any other medical condition that, in the opinion of Investigator, may cause the subject to be unsuitable for the completion of the study or place the subject at potential risk from being in the study, e.g. a malignancy, uncontrolled hypertension, unstable ischemic heart disease, or uncontrolled diabetes mellitus
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
0 participants (actual)

Study arms

  • Active comparator
    IV iron

    Ferumoxytol intravenous (IV) 1020 mg as - 2 vials of 510 mg (510 mg IV over 15 minutes) each given 2-7 days apart. Participants in this group will also receive oral vitamin C as a placebo.

    Drug: Ferumoxytol · Other: Oral vitamin C

  • Active comparator
    oral iron

    Ferrous sulfate 325 mg (oral) tabs morning and evening. Participants in this group will also receive intravenous normal saline as a placebo.

    Drug: Ferrous sulfate · Other: Intravenous normal saline

Interventions

  • DrugFerumoxytol

    treatment of iron deficiency anemia with IV iron.

  • DrugFerrous sulfate

    treatment of iron deficiency anemia with oral iron

  • OtherOral vitamin C

    Oral vitamin C to be used as a placebo for participants receiving IV iron

  • OtherIntravenous normal saline

    Intravenous normal saline will be used as placebo for participants receiving oral iron

06

What researchers measure

Primary outcomes

  1. Resolution of anemia in oral vs. IV iron as assessed by Clinical Global Impression (CGI) - 2 score

    The CGI-2 is a one-item questionnaire which asks how participants feel now compared to before receiving treatment. It has a scoring of 1 to 7 with 1 meaning much better and 7 meaning very much worse

    Time frame: 6 weeks

  2. Resolution of anemia in oral vs. IV iron as assessed by ferritin level

    Participants will be assessed after six weeks to see if there is a resolution of anemia following the treatment with oral or IV iron. This will be determined by the ferritin level. Ferritin \> 20% will be the cutoff for resolution of anemia.

    Time frame: 6 weeks

  3. Resolution of anemia in oral vs. IV iron as assessed by TSAT

    Participants will be assessed after six weeks to see if there is a resolution of anemia following the treatment with oral or IV iron. This will be determined by TSAT level. TSAT \> 19% will be the cutoff for resolution of anemia.

    Time frame: 6 weeks

  4. Time (weeks) to treatment response as assessed by CGI-2 score

    The CGI-2 is a one-item questionnaire which asks how participants feel now compared to before receiving treatment. It has a scoring of 1 to 7 with 1 meaning much better and 7 meaning very much worse. This will be used in assessing the time in weeks when participant noticed a change after receiving treatment.

    Time frame: 6 weeks

  5. Time (weeks) to treatment response as assessed by ferritin level

    Participants will be assessed after six weeks to identify what time (in weeks) ferritin level was \> 20% following the treatment with oral or IV iron

    Time frame: 6 weeks

  6. Time (weeks) to treatment response as assessed by TSAT

    Participants will be assessed after six weeks to identify what time (in weeks) TSAT level was \> 19% following the treatment with oral or IV iron

    Time frame: 6 weeks

Secondary outcomes

  1. Need for continued treatment as assessed by ferritin level

    Participants will be assessed after a year to see if participants require continued treatment following the treatment with oral or IV iron. This will be determined by the ferritin level. Ferritin \> 20% will be the cutoff for no further need for treatment.

    Time frame: 1 year

  2. Need for continued treatment as assessed by TSAT

    Participants will be assessed after a year to see if participants require continued treatment following the treatment with oral or IV iron. This will be determined by TSAT level. TSAT \> 19% will be the cutoff for no further need for treatment.

    Time frame: 1 year

07

Study locations

No study locations are listed for this record.

08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 11, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03777514
Lead sponsor
Johns Hopkins University
Collaborators
AMAG Pharmaceuticals, Inc.
Responsible party
Sponsor
First posted
Dec 17, 2018
Start date
Aug 2019 (estimated)
Primary completion
Oct 2021 (estimated)
Completion
Sep 2022 (estimated)
Last update
Sep 11, 2019

Study contacts

Kimberley E Steele, MD, Ph.D
principal investigator · Johns Hopkins University

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is withdrawn, as verified in Sep 2019. You cannot join it, but the record below documents what was studied.

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