Supplementary Oxygen Therapy after Limb Debridement and Reconstruction Surgery in Infected Extremity Fractures (SOLDIER): a pilot, non-blinded, randomized controlled trial

2026-525871-24-00 Protocol SOLDIER-2026 Therapeutic exploratory (Phase II) Authorised, recruitment pending

Status Authorised, recruitment pending · 1 EU/EEA countries · 1 sites · Protocol SOLDIER-2026

Overview

Sponsor-declared trial summary

Phase Therapeutic exploratory (Phase II)
Status Authorised, recruitment pending
Participants planned 50
Countries 1
Sites 1

Fracture-Related Infection

The main objective of the SOLDIER pilot trial is to determine whether a subsequent randomized controlled trial on the potential added value of supplementary hyperbaric oxygen therapy in the treatment of fracture-related infection as performed using the current study design is feasible.

Key facts

Sponsor
Amsterdam UMC Stichting
Participant type
Patients
Age range
18-64 years, 65+ years
Gender
Male and Female
Therapeutic area
Diseases [C] - Bacterial Infections and Mycoses [C01], Diseases [C] - Musculoskeletal Diseases [C05]
Decision date (initial)
2026-06-22
Transition trial
No
Low-intervention
Yes
Rare-disease indication
No
Vulnerable population
No

External identifiers

EU CT number
2026-525871-24-00
ClinicalTrials.gov
NCT07535164

Trial design

CTIS Part I — objectives, methods, condition coding

Main objective

Scope: Therapy

The main objective of the SOLDIER pilot trial is to determine whether a subsequent randomized controlled trial on the potential added value of supplementary hyperbaric oxygen therapy in the treatment of fracture-related infection as performed using the current study design is feasible.

Conditions and MedDRA coding

Fracture-Related Infection

Eligibility criteria

Principal inclusion / exclusion criteria as submitted by sponsor

Inclusion criteria 2

  1. Age ≥ 18 years
  2. Confirmed or highly suspected post-traumatic FRI of the lower limb, for which surgical intervention will be conducted

Exclusion criteria 4

  1. Patients with a known contraindication for HBOT: untreated pneumothorax; epilepsy; middle ear or thorax surgery in the previous 12 months; inability to equalize the ears; COPD grade 4 or other severe air trapping lung disease; presence of a device that is not known to be compatible with HBOT; severe claustrophobia; pregnancy; BMI ≥ 35; obstructive sleep apnoea syndrome or obesity hypoventilation syndrome with a chronic increased PaCO2 > 6.4 kPa
  2. Patients with an early (i.e. diagnosed < 6 weeks post initial trauma) FRI, which is treated by DAIR-procedure (Debridement, Antibiotics, Implant Retention) without soft tissue reconstruction
  3. Patients with an active isolation precautions protocol which is incompatible with treatment in a hyperbaric chamber (i.e. with multiple patients in the chamber at the same time)
  4. Inability to understand Dutch or English

Endpoints

Primary and secondary outcome measures (English text)

Primary endpoints 3

  1. Number of subjects included after one year study duration
  2. Number of HBOT sessions completed by each subject in the intervention group
  3. Completeness of acquired data on patient-reported outcome measures

Investigational products

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

Test 1

Oxygen

SUB14733MIG · Substance

Active substance
Oxygen
Pharmaceutical form
MEDICINAL GAS, COMPRESSED
Route of administration
INHALATION
Max daily dose
100 % (V/V) percent volume/volume
Max total dose
100 % (V/V) percent volume/volume
Max treatment duration
30 Day(s)
Authorisation status
Authorised
ATC code
- — -
Marketing authorisation
-
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Sponsors and contacts

Sponsor organisations, regulatory contacts, third parties

Amsterdam UMC Stichting

Sponsor organisation
Amsterdam UMC Stichting
Address
De Boelelaan 1117
City
Amsterdam
Postcode
1081 HV
Country
Netherlands

Scientific contact point

Organisation
Amsterdam UMC Stichting
Contact name
Coordinating investigator

Public contact point

Organisation
Amsterdam UMC Stichting
Contact name
Coordinating investigator

Locations

1 EU/EEA country · 1 investigational sites

By country

CountryMS statusPlanned subjectsSites
Netherlands Authorised, recruitment pending 50 1
Rest of world 0

Investigational sites

Netherlands

1 site · Authorised, recruitment pending
Amsterdam UMC Stichting
Anesthesiology, Meibergdreef 9, 1105 AZ, Amsterdam

Results and documents

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

Documents 9 files

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

TypeTitleVersion
Protocol (for publication) D1_Protocol_2026-525871-24-00_redacted 2
Protocol (for publication) D4_Patient facing documents_EQ-5D 1
Protocol (for publication) D4_Patient facing documents_LIMB-Q 1
Protocol (for publication) D4_Patient facing documents_Return to life role 1
Recruitment arrangements (for publication) K1_Recruitment arrangements_2026-525871-24-00 2
Subject information and informed consent form (for publication) L1_SIS and ICF_adults_2026-525871-24-00 2
Subject information and informed consent form (for publication) L2_Other subject information material_Patienteninformatie Hyperbare geneeskunde 1
Summary of Product Characteristics (SmPC) (for publication) E1_SmPC_Zuurstof Medicinaal Gasvormig SOL 100 vv medicinaal gas samengeperst 1
Synopsis of the protocol (for publication) D1_Protocol_synopsis_Dutch_2026-525871-24-00 1

Application history

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

#TypeCodeSubmittedReference MSConclusionDecision date
1 INITIAL IN 2026-04-02 Netherlands Acceptable
2026-06-22
2026-06-22