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Clinical Utility of LIBS Multi-Element Imaging and the IFF Algorithm in Chronic Lung Diseases (PNEUMO-LIBS)

8 septembre 2026 mis à jour par: University Hospital, Grenoble

Evaluation of the Clinical Utility of LIBS Multi-Element Imaging and the IFF Algorithm for the Etiological and Medico-Legal Management of Chronic Lung Diseases

PNEUMO-LIBS is a multicenter, non-interventional observational study designed to evaluate whether multi-element tissue imaging by Laser-Induced Breakdown Spectroscopy (LIBS), combined with an artificial intelligence-based analysis tool called Interesting Features Finder (IFF), may help physicians better understand the possible causes of chronic lung diseases.

The study focuses on adult patients with chronic lung diseases for which a lung biopsy has already been performed as part of routine medical care. These diseases include diffuse interstitial lung diseases, pulmonary granulomatoses such as sarcoidosis, and emphysema, especially when an environmental or occupational exposure is suspected but not clearly demonstrated.

Some chronic lung diseases may be influenced by inhaled mineral or metallic particles, such as silica, aluminum, titanium, or other metals. However, these exposures are often difficult to document at the individual patient level. Standard clinical, radiological, and pathological investigations do not usually provide direct information on the presence and distribution of such elements within lung tissue.

LIBS is an imaging technique that can detect and map chemical elements directly in tissue samples, including archived formalin-fixed paraffin-embedded biopsy blocks. In this study, lung biopsy samples will be analyzed with LIBS to search for elemental signatures that may be compatible with occupational or environmental exposures. The IFF algorithm will then be used to help interpret the LIBS data and identify rare or unexpected elemental signals.

The study does not require any additional biopsy, blood test, imaging examination, treatment, or hospital visit for participants. It uses tissue samples and medical data already collected during routine care. The results of LIBS and IFF analyses will be presented to the treating physician or investigator, who will complete standardized online questionnaires at three time points: before receiving the LIBS results, after receiving the LIBS report, and after receiving the IFF-assisted interpretation.

The main objective is to assess the perceived clinical utility of LIBS imaging for physicians, particularly regarding etiological understanding, possible occupational disease recognition, and prevention-oriented reasoning. Secondary objectives include assessing the added value of the IFF algorithm and evaluating the feasibility of a centralized multicenter workflow for sample transfer, LIBS analysis, IFF processing, result reporting, and questionnaire completion.

The study aims to include approximately 70 patients across several French hospital centers. Its results may support the development of future diagnostic, occupational health, and environmental medicine approaches, without modifying the medical care of participants during the study.

Aperçu de l'étude

Statut

Recrutement

Les conditions

Type d'étude

Observationnel

Inscription (Estimé)

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Coordonnées de l'étude

Nom: Benoit BUSSER
Numéro de téléphone: +33476768939
E-mail: BBusser@chu-grenoble.fr

Sauvegarde des contacts de l'étude

Nom: Vincent BONNETERRE
Numéro de téléphone: +33476765851
E-mail: VBonneterre@chu-grenoble.fr

Lieux d'étude

France
- - Grenoble, France
    - Recrutement
    - CHU Grenoble Alpes
    - Contact:
      
      Benoit BUSSER
      
      Numéro de téléphone: +33476768939
      
      E-mail: BBusser@chu-grenoble.fr
    - Contact:
      
      Vincent BONNETERRE
      
      Numéro de téléphone: 33+ (0)4 76 76 58 51
      
      E-mail: VBonneterre@chu-grenoble.fr
  - Nancy, France
    - Recrutement
    - Centre Hospitalier Régional Universitaire Nancy (CHRU)
    - Contact:
      
      Isabelle THAON
      
      Numéro de téléphone: 33 3 83 15 71 71
      
      E-mail: i.thaon@chru-nancy.fr
    - Chercheur principal:
      
      Isabelle THAON
  - Rouen, France
    - Recrutement
    - centre Hospitalier Universitaire Rouen (CHU)
    - Contact:
      
      Antoine GISLARD
      
      Numéro de téléphone: 33 2 35 88 82 69
      
      E-mail: Antoine.Gislard@chu-rouen.fr
    - Chercheur principal:
      
      Antoine GISLARD

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

Adulte
Adulte plus âgé

Accepte les volontaires sains

Non

Méthode d'échantillonnage

Échantillon non probabiliste

Population étudiée

Adult patients with chronic lung diseases, including interstitial lung diseases, pulmonary granulomatoses such as sarcoidosis, and pulmonary emphysema, for whom a lung biopsy sample obtained during routine care is available for LIBS and IFF analysis. Participants may be identified retrospectively or prospectively in participating French hospital centers. Only patients who have not objected to the use of their health data and biological samples for research will be included.

La description

Inclusion Criteria:

Adult patient aged 18 years or older.
Diagnosis or documented clinical suspicion of chronic lung disease, including interstitial lung disease, pulmonary granulomatosis such as sarcoidosis, or pulmonary emphysema.
Availability of a lung tissue biopsy sample obtained during routine medical care and stored as a formalin-fixed paraffin-embedded sample.
Sufficient medical record information to document the clinical context, occupational or environmental exposure history, smoking status, imaging, pathology reports, and other relevant routine-care data.
No documented objection to the secondary use of health data and biological samples for this research.

Exclusion Criteria:

Documented objection to participation in the study or to the secondary use of health data or biological samples for research.
Missing, unavailable, degraded, or technically unusable biopsy sample.
Insufficient medical record information to document the clinical context or exposure history.
Lung condition outside the scope of the study, such as isolated acute infection, isolated cardiac disease, or primary lung cancer.
Patient under legal protection when the applicable legal conditions for non-opposition cannot be fulfilled.

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats	Description de la mesure	Délai
Proportion of Patients With Perceived Added Clinical Value of LIBS Imaging Délai: After Review of the LIBS Report, Up to 1 Month After Inclusion	Proportion of patients for whom the investigator reports that LIBS imaging provides new and clinically useful information in at least one of the following domains: etiological understanding, medico-legal reasoning regarding possible occupational disease recognition, or prevention-oriented recommendations.	After Review of the LIBS Report, Up to 1 Month After Inclusion

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

University Hospital, Grenoble

Les enquêteurs

Chercheur principal: Vincent BONNETERRE, CHU Grenoble Alpes

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Estimé)

1 octobre 2026

Achèvement primaire (Estimé)

1 juin 2027

Achèvement de l'étude (Estimé)

1 juillet 2027

Dates d'inscription aux études

Première soumission

12 mai 2026

Première soumission répondant aux critères de contrôle qualité