The Optimization of Bioavailability From Iron Supplements: Study 2

January 20, 2016 updated by: Swiss Federal Institute of Technology

The Optimization of Bioavailability From Iron Supplements: Examinations of Different Supplementation Regimens Including Hepcidin Profiles

Iron deficiency (ID) with or without anaemia (IDA) is a major public health problem worldwide, especially in women of reproductive age and young children. Iron supplementation is an effective strategy to prevent and treat ID and IDA. There is a lack of data on iron bioavailability from different supplementation regimens and how to optimize bioavailability in a cost-effective and patient-friendly way. The daily supplementation with 1-4 mg Fe/kg body weight for 3 months is reported to be the most effective method to rapidly increase iron stores in subjects with ID and IDA. In IDA patients, medical practitioners often prescribe supplementation regimens with 120 mg iron per day split into 2 doses with 60 mg iron, arguing that the splitting would increase iron bioavailability compared with one single high dose. However, there is no scientific evidence for this assumption; to the contrary, results from a recent study suggest that iron bioavailability from a second supplementation dose of iron after a first supplementation dose of iron is impaired due to increased hepcidin levels. To address this bioavailability issue, the present study will determine iron absorption from 120 mg iron administered for 3 consecutive days and compare it with that from 2 doses of 60 mg iron per day administered for 3 consecutive days. The investigators hypothesize that the iron bioavailability from the single daily dose will be lower than that from the 2 doses. By measuring also hepcidin, this study will provide important insights on the iron bioavailability from a single dose of iron and on the same amount iron split into two doses (b.i.d. administration).

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
20

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

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

Study Locations

  • Switzerland
      • Zurich, Switzerland, 8092
        • Human Nutrition Laboratory

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 45 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Female

Description

Inclusion Criteria:

  • Female, 18 to 45 years old,
  • Serum Ferritin levels <20 µg/L,
  • Normal body Mass Index (18.5-25 kg/m2),
  • Body weight <65 kg,
  • Signed informed consent

Exclusion Criteria:

  • Anaemia (Hb < 11.7 g/dL),
  • Elevated c-reactive protein or alpha1 glycoprotein concentrations >5.0 mg/L, >1.0 g/L, respectively,
  • Any metabolic, gastrointestinal kidney or chronic disease such as diabetes, renal failure, hepatic dysfunction, hepatitis, hypertension, cancer or cardiovascular diseases (according to the participants own statement),
  • Continuous/long-term use of medication during the whole studies (except for contraceptives),
  • Consumption of mineral and vitamin supplements within 2 weeks prior to 1st supplement administration,
  • Blood transfusion, blood donation or significant blood loss (accident, surgery) over the past 4 months,
  • Earlier participation in a study using stable iron isotopes,
  • Known hypersensitivity or allergy to iron supplements,
  • Women who are pregnant or breast feeding,
  • Intention to become pregnant during the course of the studies,
  • Lack of safe contraception, defined as: Female participants of childbearing potential, not using and not willing to continue using a medically reliable method of contraception for the entire study duration, such as oral, injectable, or implantable contraceptives, or intrauterine contraceptive devices, or who are not using any other method considered sufficiently reliable by the investigator in individual cases.
  • Known or suspected non-compliance, drug or alcohol abuse,
  • Inability to follow the procedures of the studies, e.g. due to language problems, psychological disorders, dementia, etc. of the participant,
  • Participation in another study with investigational drug within the 30 days preceding and during the present studies,
  • Enrolment of the investigator, his/her family members, employees and other dependent persons

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: Prevention
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Single oral iron supplement per day (120 mg)
Single oral iron dose of 120 mg per day for 3 consecutive days
Dietary supplement: Single oral iron dose of 120 mg per day for 3 consecutive days
Active Comparator: B.i.d. oral iron supplement (2x 60 mg)
Two oral iron doses of 60 mg per day (morning + afternoon) for 3 consecutive days
Dietary supplement: Two oral iron doses of 60 mg per day (morning + afternoon) for 3 consecutive days

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Iron bio-availability (%) from oral iron supplementation (3x 120 mg)
Time Frame: 3 days
Iron bioavailability will be assessed with stable isotopic labels. The shift in the isotopic ratio in human whole blood will be measured with Inductively coupled plasma mass spectrometry (ICP-MS).
3 days
Serum hepcidin concentrations on the 1st day of iron supplementation
Time Frame: 1 day
1 day
Iron bio-availability (%) from oral iron supplementation (6x 60 mg)
Time Frame: 6 days
Iron bioavailability will be assessed with stable isotopic labels. The shift in the isotopic ratio in human whole blood will be measured with Inductively coupled plasma mass spectrometry (ICP-MS).
6 days
Serum hepcidin concentrations on the 2nd day of iron supplementation
Time Frame: 2 days
2 days
Serum hepcidin concentrations on the 3rd day of iron supplementation
Time Frame: 3 days
3 days
Serum hepcidin concentrations on the 4th day of iron supplementation
Time Frame: 4 days
4 days
Serum hepcidin concentrations on the 5th day of iron supplementation
Time Frame: 5 days
5 days
Serum hepcidin concentrations on the 6th day of iron supplementation
Time Frame: 6 days
6 days

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Swiss Federal Institute of Technology

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
June 1, 2015

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
September 1, 2015

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2015

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 25, 2014

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 26, 2014

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 30, 2014

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
January 21, 2016

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 20, 2016

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
September 1, 2015

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • FeSupp_Hep-2

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