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Respiratory DiseasesEBECANCT04461821

Exhaled Breath Analysis by Secondary Electrospray Ionization - Mass Spectrometry in Children and Adolescents

An observational study of Respiratory Diseases and Neurological Disorders, run by University Children's Hospital Basel at 1 site in Switzerland.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

This study is to investigate breath analysis (breath metabolomics) combined with established bioinformatic tools as a platform for companion diagnostics. Read more about this study

Who is it for?
Ages Up to 22 years
What is being tested?
Real-time SESI-MS breath analysis, Off-line breath analysis and Blood analysis
How many people
3,600 participants
Where
1 siteSwitzerland
Study dates
11 Sep 2020to Jul 2030
Phase
Observational
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages Up to 22 years
  • All sexes
  • No healthy volunteers
  • Child, Adult

Study population: Participants presenting with an acute disease in the emergency department at the University of Basel Children's Hospital (UKBB). Participants with chronic diseases recorded at the University of Basel Children's Hospital (UKBB).

Who may be able to join

  • Age 0 ≤ 22 years at study entry and signed informed consent
  • Additional inclusion criteria for respiratory disease population:
  • Acute disease: - Acute signs for a respiratory disease, indicated by e.g. increased work of breathing (e.g. dyspnea, increased respiratory rate), cough or wheezing.
  • Chronic disease: - Suspected or confirmed chronic airway disease (e.g. asthma).
  • Additional inclusion criteria for neurological disease population:
  • Acute disease: - Acute presentation or report within 24 hours of any signs of neurological deficit (motor function, sensoneural, or verbal).
Show all 10Show fewer
  • Chronic disease: - Confirmed chronic neurologic disease (e.g. childhood epilepsy).
  • Additional inclusion criteria for T1D disease population:
  • Acute disease: - Hyperglycemia and/or pH (venous) <7.3, bicarbonate >10 mmol/L, increased levels of acetone in blood or urine in the context of newly diagnosed or known T1D.
  • Chronic disease: - Confirmed diagnosis of T1D

Who cannot join

  • Physical or intellectual impairment precluding protocol adherence.
  • Additional exclusion criteria for respiratory disease population:
  • Known malignancy, active smoker (passive smoke exposure is not an exclusion criterium), known inflammatory diseases (e.g. autoimmune disease) that require medical and/or pharmacological treatment and is associated with an inflammatory response, relevant congenital defects
  • Additional exclusion criteria for neurological disease population:
  • Known malignancy, active smoker (passive smoke exposure is not an exclusion criterium), known inflammatory diseases (e.g. autoimmune disease) that require medical and/or pharmacological treatment and is associated with an inflammatory response, relevant congenital defects.
  • Additional exclusion criteria for T1D population:
  • Known malignancy, active smoker (passive smoke exposure is not an exclusion criterium), relevant congenital defects.

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Pablo Sinues, Prof. Dr. contact

+41 61 704 2949

pablo.sinues@ukbb.ch

Switzerland1 site, 1 recruiting
  • University Children's Hospital Basel (UKBB)

    Basel, 4031

    Pablo Sinues, Prof. Dr., +41 61 704 2949, pablo.sinues@ukbb.ch

    Mélina Richard, +41 61 704 14 11, melinadenise.richard@unibas.ch

    Recruiting

Other trials in Switzerland

About this study

Official title: Exhaled Breath Analysis by Secondary Electrospray Ionization - Mass Spectrometry in Children and Adolescents (EBECA)

This study is to investigate breath analysis (breath metabolomics) combined with established bioinformatic tools as a platform for companion diagnostics.

Read the detailed description

Therapeutic drug monitoring (TDM) is defined as measuring concentrations of a drug at one or more time points in a biological matrix after a dose. The purpose of TDM is to individualize the drug dose to achieve maximum efficacy and at the same time minimize toxicity. The concept of TDM could potentially be even more valuable if in addition to drug concentrations, other drug-regulated and drug-related metabolites could be included in the models to define optimal dosage. There exists a clinical need to stratify patients with better precision to improve current clinical and therapeutic management. Breath analysis offers an opportunity to non-invasively retrieve relevant information on the ongoing internal biochemical processes, as well as to monitor the respiratory system itself. For breath analysis, a Secondary Electrospray ionization - mass spectrometry (SESI-MS) breath analysis platform will be used to capture disease-related, drug-regulated and drug-related metabolites (breath metabolomics) in exhaled breath. This information, retrieved in parallel to standard of care clinical co-variates, could have the potential to provide a more personalized therapeutic management of patients.

Being tested
Real-time SESI-MS breath analysis, Off-line breath analysis, Blood analysis, Saliva analysis, Urine analysis
Keywords
Exhaled breath analysis, Therapeutic drug monitoring (TDM), Secondary Electrospray ionization - mass spectrometry (SESI-MS), breath analysis platform, breath metabolomics
Medical subject headings
Respiratory Tract Diseases, Nervous System Diseases, Diabetes Mellitus, Type 1

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Real-time SESI-MS breath analysisDiagnostic test

    Participants will be asked to refrain from eating, drinking, chewing gum use or brushing their teeth at least 1 hour before the measurements will be performed. Room temperature and lighting will be set at the same level for all measurements. Participants will exhale through a disposable mouthpiece into a commercially available SESI source (FIT S.L., Spain). While performing full exhalations, the subjects will keep the pressure through the sampling line at a fixed value monitored by a digital manometer. Breath prints will be collected in real-time recording multiple replicates (typically six in positive and negative ion mode). The whole procedure is absolutely non-invasive and is usually accomplished without any effort in around 15 min per subject.

  • Off-line breath analysisDiagnostic test

    In young children below the age of 4 not capable of completing the on-line exhalation maneuvers, or in cases when the patient needs cannot approach the mass spectrometer, the sample will be collected off-line. They will be asked to exhale into a bag that will be transported to the lab and deflated into the mass spectrometer for analysis. Exhaled breath of patients under anesthesia will also collected using available ventilation system in the operation theatre.

  • Blood analysisDiagnostic test

    Blood analysis done in patients who undergo regular blood sampling needed for clinical routine laboratory controls. This includes i) children and adolescents receiving medications which require TDM ii) patients with acute diseases such as TD1 and pneumonia and iii) patients with chronic diseases such as asthma bronchiale. For those patients where a blood sample is drawn during the clinical routine, an additional blood sample consisting of only several blood drops will be collected using the same blood sampling line. No additional venous puncture for research purpose will be done.

  • Saliva analysisDiagnostic test

    During the diagnostic and therapeutic work-up of T1D patients, saliva samples are collected during the clinical routine. For those patients, additional samples will be obtained by clinically trained investigators.

  • Urine analysisDiagnostic test

    During the diagnostic and therapeutic work-up of T1D patients, urine samples are collected during the clinical routine. For those patients, additional samples will be obtained by clinically trained investigators.

Study groups in NCT04461821
Study groupRoleWhat they receive
obstructive bronchitis/bronchiolitisNot described
Receives: Diagnostic Test: Real-time SESI-MS breath analysis; Diagnostic Test: Off-line breath analysis; Diagnostic Test: Blood analysis
pneumoniaNot described
Receives: Diagnostic Test: Real-time SESI-MS breath analysis; Diagnostic Test: Off-line breath analysis; Diagnostic Test: Blood analysis
asthmaNot described
Receives: Diagnostic Test: Real-time SESI-MS breath analysis; Diagnostic Test: Off-line breath analysis; Diagnostic Test: Blood analysis
neurological diseasesNot described
Receives: Diagnostic Test: Real-time SESI-MS breath analysis; Diagnostic Test: Off-line breath analysis; Diagnostic Test: Blood analysis
type 1 diabetes (T1D)Not described
Receives: Diagnostic Test: Real-time SESI-MS breath analysis; Diagnostic Test: Off-line breath analysis; Diagnostic Test: Blood analysis; Diagnostic Test: Saliva analysis; Diagnostic Test: Urine analysis
pharmacotherapy with bronchodilatorsNot described
Receives: Diagnostic Test: Real-time SESI-MS breath analysis; Diagnostic Test: Off-line breath analysis; Diagnostic Test: Blood analysis
pharmacotherapy with antibioticsNot described
Receives: Diagnostic Test: Real-time SESI-MS breath analysis; Diagnostic Test: Off-line breath analysis; Diagnostic Test: Blood analysis
pharmacotherapy with antiviral medicationNot described
Receives: Diagnostic Test: Real-time SESI-MS breath analysis; Diagnostic Test: Off-line breath analysis; Diagnostic Test: Blood analysis
pharmacotherapy with antifungal medicationNot described
Receives: Diagnostic Test: Real-time SESI-MS breath analysis; Diagnostic Test: Off-line breath analysis; Diagnostic Test: Blood analysis
pharmacotherapy with antiepileptic medicationNot described
Receives: Diagnostic Test: Real-time SESI-MS breath analysis; Diagnostic Test: Off-line breath analysis; Diagnostic Test: Blood analysis
pharmacotherapy with immuno suppressants and immune-modulatiNot described
Receives: Diagnostic Test: Real-time SESI-MS breath analysis; Diagnostic Test: Off-line breath analysis; Diagnostic Test: Blood analysis
pharmacotherapy with anesthesia (including sedating, analgesNot described
Receives: Diagnostic Test: Real-time SESI-MS breath analysis; Diagnostic Test: Off-line breath analysis; Diagnostic Test: Blood analysis

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Days of hospitalization

    In the presentation of an acute disease the primary outcome will be days of hospitalization and its association with the exhaled breath pattern.

    Measured: approx 30 days (from beginn hospitalisation to discharge date)

  2. Change in Mass spectrometric profile of exhaled breath patterns

    In the chronic presentation of the diseases, the mass spectrometric profile of exhaled breath patterns is analyzed

    Measured: Week 0 (first regular clinic visit) to Follow-up visits (approx. years 1-10)

  3. Change in Concentration of exhaled metabolites of pharmacotherapy

    Concentration of exhaled metabolites of pharmacotherapy (breath metabolomics data)

    Measured: Week 0 (first regular clinic visit) to Follow-up visits (approx. years 1-10)

Secondary outcomes (5)
  1. Identification of chemical structure of exhaled molecules (acetone, glucose)

    Identification of chemical structure of exhaled molecules (acetone, glucose)

    Measured: approx 30 days (from begin hospitalisation to discharge date)

  2. Correlations of identified molecules (acetone, glucose) in exhaled breath with body fluids (blood, saliva, urine) for T1D acute disease (mmol/l)

    Correlations of identified molecules (acetone, glucose) in exhaled breath with body fluids (blood, saliva, urine) for T1D acute disease (mmol/l)

    Measured: 0h, 2h, 4h, 6h, 8h, 12h, 18h, 24h, 36h, 48h, 72h (h =hours after hospital admission)

  3. Change in clinical endpoint lung function (Forced Expiratory Pressure in 1 Second FEV1 l/s) for correlation between clinical endpoint and the abundance of exhaled metabolites

    Change in clinical endpoint lung function (Forced Expiratory Pressure in 1 Second FEV1 l/s) for correlation between clinical endpoint and the abundance of exhaled metabolites

    Measured: approx 10 years (from begin hospitalisation to discharge date and from first regular clinic visit to Follow-up visits)

  4. Change in clinical endpoint (body temperature, Celsius) for correlation between clinical endpoint and the abundance of exhaled metabolites

    Change in clinical endpoint (body temperature) for correlation between clinical endpoint and the abundance of exhaled metabolites

    Measured: approx 10 years (from begin hospitalisation to discharge date and from first regular clinic visit to Follow-up visits)

  5. Change in clinical endpoint (blood pressure, mmHg) for correlation between clinical endpoint and the abundance of exhaled metabolites

    Change in clinical endpoint (blood pressure) for correlation between clinical endpoint and the abundance of exhaled metabolites

    Measured: approx 10 years (from begin hospitalisation to discharge date and from first regular clinic visit to Follow-up visits)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted8 Jul 2020
  2. Study start11 Sep 2020
  3. Primary completionJul 2030 (estimated)
  4. Study completionJul 2030 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
3,600 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04461821
Sponsor's protocol ID
2020-00778; ks20Sinues
Acronym
EBECA
Status last verified
May 2026
First submitted
23 Jun 2020
Last updated
8 May 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No

Publications

  • Zeng J, Stankovic N, Singh KD, Steiner R, Frey U, Erb T, Sinues P. Breath Analysis of Propofol and Associated Metabolic Signatures: A Pilot Study Using Secondary Electrospray Ionization-High-resolution Mass Spectrometry. Anesthesiology. 2025 Aug 1;143(2):345-356. doi: 10.1097/ALN.0000000000005531. Epub 2025 Apr 21.

    PubMed 40258137

Questions about this trial

What is this clinical trial studying?

An observational study of Respiratory Diseases and Neurological Disorders, run by University Children's Hospital Basel at 1 site in Switzerland.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 10 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 8 May 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Switzerland. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Pablo Sinues, Prof. Dr. (+41 61 704 2949, pablo.sinues@ukbb.ch), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Days of hospitalization (time frame: approx 30 days (from beginn hospitalisation to discharge date)). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT04461821, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 8 May 2026.

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