IRONGIRLS-PILOT: Feasibility of Alternate-Day Iron Supplementation in Adolescent Girls

2025-522498-12-00 Therapeutic use (Phase IV) Authorised, recruitment pending

Status Authorised, recruitment pending · 1 EU/EEA countries · 1 sites

Overview

Sponsor-declared trial summary

Phase Therapeutic use (Phase IV)
Status Authorised, recruitment pending
Participants planned 279
Countries 1
Sites 1

iron deficiency in adolescent girls

1. To evaluate the feasibility of Duroferon 100 mg administered on alternate days in combination with Iron Smart, compared with placebo plus Iron Smart, in adolescent girls with iron deficiency. 2. To evaluate the diagnostic performance of IRON-5 in identifying iron deficiency (ferritin <15 µg/L).

Key facts

Sponsor
Region Skane
Participant type
Pediatric, Patients
Age range
0-17 years, 18-64 years
Gender
Female
Therapeutic area
Not possible to specify, Health Care [N] - Environment and Public Health [N06]
Decision date (initial)
2026-04-14
Transition trial
No
Low-intervention
Yes
Rare-disease indication
No
Vulnerable population
No

Trial design

CTIS Part I — objectives, methods, condition coding

Main objective

Scope: Diagnosis, Others

1. To evaluate the feasibility of Duroferon 100 mg administered on alternate days in combination with Iron Smart, compared with placebo plus Iron Smart, in adolescent girls with iron deficiency.
2. To evaluate the diagnostic performance of IRON-5 in identifying iron deficiency (ferritin <15 µg/L).

Secondary objectives 4

  1. To assess change in ferritin concentration from screening to follow-up.
  2. To assess change in haemoglobin, transferrin saturation (TSAT), vitamin B12 and 25-hydroxyvitamin D from screening to follow-up.
  3. To explore factors associated with iron deficiency (e.g. dietary patterns, BMI, menstrual characteristics, physical activity, socioeconomic status and country of birth).
  4. To explore factors other than iron deficiency associated with fatigue and self-rated QoL (e.g. vitamin B12/25-hydroxyvitamin D status, anxiety/depression and lifestyle factors).

Conditions and MedDRA coding

iron deficiency in adolescent girls

Eligibility criteria

Principal inclusion / exclusion criteria as submitted by sponsor

Inclusion criteria 6

  1. Student at Polhemskolan, Lund
  2. Age ≥15 years
  3. Post-menarcheal
  4. Written informed consent from the participant
  5. Written informed consent from legal guardian(s) if <18 years
  6. Serum ferritin <30 µg/L

Exclusion criteria 9

  1. Pregnancy
  2. Chronic inflammatory disease (e.g. rheumatoid arthritis, Crohn’s disease)
  3. Ongoing acute infection (e.g. tonsillitis, urinary tract infection)
  4. CRP >10 mg/L
  5. Current iron supplementation (except multivitamins)
  6. Anaemia (Hb <110 g/L if <18 years; <117 g/L if ≥18 years, according to regional reference limits)
  7. Iron overload (serum ferritin >150 µg/L; WHO definition)
  8. Clinically significant vitamin B12 deficiency requiring immediate medical evaluation or treatment (e.g. serum vitamin B12 <150 pmol/L).
  9. Use of medication known to interfere with iron absorption or cause clinically significant interaction with oral iron (e.g. fluoroquinolones, tetracyclines, bisphosphonates, levodopa, methyldopa, aluminium- or magnesium-containing antacids), defined as regular or daily use (≥3 times per week).

Endpoints

Primary and secondary outcome measures (English text)

Primary endpoints 1

  1. 1. Feasibility, including recruitment, retention, adherence and tolerability. 2. Diagnostic performance of IRON-5 (sensitivity, specificity, positive and negative predictive values, and ROC-AUC).

Secondary endpoints 4

  1. Change in ferritin concentration.
  2. Change in haemoglobin, TSAT, vitamin B12 and 25-hydroxyvitamin D from screening to follow-up.
  3. Associations between iron deficiency and selected factors (dietary patterns, BMI, menstrual characteristics including bleeding volume, menstrual pain and analgesic use, hormonal contraceptive use, physical activity, socioeconomic status and country of birth).
  4. Associations between fatigue and self-rated QoL and factors other than iron deficiency (e.g. vitamin B12 and vitamin D deficiency, anxiety/depression and lifestyle factors).

Investigational products

Investigational medicinal products (IMPs), comparators, placebo, auxiliary

Test 1

Duroferon depottabletter

PRD2132930 · Product

Active substance
Ferrous Sulfate
Substance synonyms
IRON SULFATE, FERROUS SULPHATE, IRON (II)-SULFATE
Pharmaceutical form
MODIFIED-RELEASE TABLET
Route of administration
ORAL USE
Max daily dose
100 mg milligram(s)
Max total dose
4500 mg milligram(s)
Max treatment duration
3 Month(s)
Authorisation status
Authorised
ATC code
B03AA07 — FERROUS SULFATE
Marketing authorisation
5680
MA holder
ACO HUD NORDIC AB
MA country
Norway
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Placebo 1

Duroferon placebo

N/A · Product

Other product name
N/A
Pharmaceutical form
N/A
ATC code
N/A — N/A
Marketing authorisation
N/A
MA holder
N/A
MA country
Iceland
Paediatric formulation
No

Sponsors and contacts

Sponsor organisations, regulatory contacts, third parties

Region Skane

Sponsor organisation
Region Skane
Address
Dockplatsen 26, Malmo S:t Petri Malmo S:t Petri
City
Malmo
Postcode
211 74
Country
Sweden

Scientific contact point

Organisation
Region Skane
Contact name
Clinical trial team

Public contact point

Organisation
Region Skane
Contact name
Clinical trial team

Locations

1 EU/EEA country · 1 investigational sites

By country

CountryMS statusPlanned subjectsSites
Sweden Authorised, recruitment pending 279 1
Rest of world 0

Investigational sites

Sweden

1 site · Authorised, recruitment pending
Region Skane
Center for Primary Health Care Research, Nöbbelöv Primary Health Care Center, 22638 Lund, Dockplatsen 26, Malmo S:t Petri, Malmo

Results and documents

Annex IV summary of results, Annex V layperson summary, and all documents registered in CTIS for this trial

Documents 16 files

Public protocol annexes, IB summaries, regulatory submissions and post-authorisation documents registered in CTIS.

TypeTitleVersion
Protocol (for publication) D1_Trial_protocol_IRONGIRLS_2025-522498-12-00 1.1
Protocol (for publication) D4_Questionnaire_baseline 1
Protocol (for publication) D4_Questionnaire_follow-up 1
Protocol (for publication) D4_Symptom diary 1
Recruitment arrangements (for publication) K1_Recruitment arrangements_ 2025-522498-12-00 1
Recruitment arrangements (for publication) K2_Beskrivning av rekryteringsmaterial_IRONGIRLS-PILOT 1
Recruitment arrangements (for publication) K2_Recruitment poster_DRAFT_IRONGIRLS-PILOT 1
Subject information and informed consent form (for publication) L1_Re-consent_18 years 1
Subject information and informed consent form (for publication) L1_SIS and ICF_trial participant 1.1
Subject information and informed consent form (for publication) L1_SIS_Legal_guardian 1.1
Subject information and informed consent form (for publication) L2_Beskrivning av Iron Smart-appen 1
Subject information and informed consent form (for publication) L2_Draft examples of participant laboratory result notifications 1
Subject information and informed consent form (for publication) L2_Information for participants in the treatment phase 1
Subject information and informed consent form (for publication) L2_Participant contact card_IRONGIRLS-PILOT 1
Summary of Product Characteristics (SmPC) (for publication) E2_SmPC Duroferon 1
Synopsis of the protocol (for publication) D1_Protocol synopsis SE_2025-522498-12-00 1

Application history

1 submissions — initial application plus substantial / non-substantial modifications

#TypeCodeSubmittedReference MSConclusionDecision date
1 INITIAL IN 2026-02-13 Sweden Acceptable
2026-04-14
2026-04-14