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Screening for Lung Cancer in Current or Past Smokers With Chronic Obstructive Pulmonary Disease

20 décembre 2011 mis à jour par: University College, London

A Randomised Controlled Trial of Surveillance for the Early Detection of Lung Cancer in an at Risk Group [Lung-SEARCH Trial]

RATIONALE: Screening tests or exams may help doctors find lung cancer sooner, when it may be easier to treat.

PURPOSE: This randomized clinical trial is studying screening tests or exams to see how well they work compared to usual care in finding early stage lung cancer in current or past smokers with chronic obstructive pulmonary disease.

Aperçu de l'étude

Statut

Complété

Les conditions

Intervention / Traitement

Description détaillée

OBJECTIVES:

Primary

  • To show that the proportion of lung cancer diagnosed at stage I or II is significantly greater in the surveillance arm than in the control arm.

Secondary

  • Establish whether sputum cytology and/or cytometry can be employed to stratify patients with chronic obstructive pulmonary disease (COPD) according to their risk of developing incidence lung cancer.
  • Identify patients with pre-invasive lesions in their airways and examine the risk of developing lung cancer in patients harboring these lesions.
  • Provide an opportunity to archive blood samples from patients under surveillance to enable the identification of markers of disease progression.
  • Examine the compliance of regular screening among patients in this high-risk group.
  • Determine the proportion of patients in which it is not possible to provide a sputum screening result.

OUTLINE: This is a randomized, controlled, multicenter study. Patients are stratified according to recruiting site, age, gender, smoking history (current vs ex-smoker) and severity of chronic obstructive pulmonary disease (COPD) (mild vs moderate). Patients are randomized to 1 of 2 arms.

  • Control arm: Patients are managed according to the usual practice of their hospital or general practice for their COPD treatment. They undergo no particular investigations except those that may arise due to a change in their clinical condition. Those patients who are not diagnosed with lung cancer during the course of the study are offered a chest x-ray after 5 years of follow-up.
  • Surveillance arm: Patients undergo surveillance for 5 years. A sputum sample is collected for cytology and cytometry. If the sputum sample is normal the patient is asked to provide a sputum sample annually. If the sputum sample is abnormal the patient undergoes an annual spiral CT scan followed by autofluorescence bronchoscopy. At bronchoscopy, the following samples are taken: bronchial washings, bronchial brushings, and bronchial biopsies. Bronchoscopy is repeated every 4-12 months depending upon the histology results. If an invasive lesion is found, the patient is referred for treatment via the normal hospital systems. Any remaining sputum sample is stored frozen as part of the tissue bank associated with this trial.

Peer Reviewed and Funded or Endorsed by Cancer Research UK.

Type d'étude

Interventionnel

Inscription (Réel)

1569

Phase

  • N'est pas applicable

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.

Lieux d'étude

  • Royaume-Uni
    • England
      • Cambridge, England, Royaume-Uni, CB23 3RE
        • Papworth Hospital
      • Coventry, England, Royaume-Uni, CV2 2DX
        • Walsgrave Hospital
      • Leeds, England, Royaume-Uni, LS1 3EX
        • Leeds General Infirmary
      • Leicester, England, Royaume-Uni, LE3 9QP
        • University Hospitals of Leicester NHS Trust
      • London, England, Royaume-Uni, SW3 6NP
        • Royal Brompton Hospital
      • London, England, Royaume-Uni, SW10 9NH
        • Chelsea Westminster Hospital
      • London, England, Royaume-Uni, WC1E 5DB
        • University College Hospital - London
      • Manchester, England, Royaume-Uni, M23 9LT
        • Wythenshawe Hospital
      • Sunderland, England, Royaume-Uni, SR4 7TP
        • Sunderland Royal Hospital
    • Northern Ireland
      • Belfast, Northern Ireland, Royaume-Uni, BT9 7AB
        • Respiratory Research Office Belfast City Hospital

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

  • Enfant
  • Adulte
  • Adulte plus âgé

Accepte les volontaires sains

Non

Sexes éligibles pour l'étude

Tout

La description

DISEASE CHARACTERISTICS:

Inclusion criteria:

  • Meets 1 of the following criteria:

    • Current smoker, defined as ≥ a 20 pack year smoking history and/or 20 year duration of smoking
    • Ex-smoker who has quit smoking within the past 8 years AND has ≥ a 20 pack year smoking history and/or 20 year duration of smoking

  • Mild to moderate chronic obstructive pulmonary disease (COPD) as defined by the GOLD criteria

    • Mild COPD: FEV_1/forced vital capacity (FVC) < 70%; FEV_1 ≥ 80% of predicted*
    • Moderate COPD: FEV_1/FVC < 70%; FEV_1 50-80% of predicted* NOTE: *Spirometric values will be obtained post bronchodilator according to the recommendations in the GOLD criteria

Exclusion criteria:

  • Inadequate lung function (FEV_1 < 50% of predicted after bronchodilator)

PATIENT CHARACTERISTICS:

Inclusion criteria:

  • Life expectancy must be at least 5 years

Exclusion criteria:

  • History of malignant disease within the past 5 years except non-melanomatous skin cancers
  • Other serious co-morbidity
  • Evidence of severe or uncontrolled systemic diseases that, in the view of the investigator, makes it undesirable for the patient to participate in this trial
  • Any disorder making reliable informed consent impossible
  • Unlikely to co-operate with a 5 year follow-up

PRIOR CONCURRENT THERAPY:

  • Patients may receive all concurrent therapy deemed to provide adequate care as decided by their medical doctors

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

  • Objectif principal: Dépistage
  • Répartition: Randomisé
  • Modèle interventionnel: Affectation parallèle
  • Masquage: Aucun (étiquette ouverte)

Armes et Interventions

Groupe de participants / Bras
Intervention / Traitement
Comparateur actif: Contrôler
Bras de commande
Autre: Chest x ray
Patients not diagnosed with lung cancer during the course of the study, will be offered an exit chest x-ray after 5 years or sooner if they withdraw from the trial before 5 years. This could help identify a lung cancer that may not have been associated with symptoms earlier.
Autre: Surveillance
Screened arm
Autre: cytology and cytometry specimen collection procedure
Samples tested and further interventions added if positive
Autre: Chest x ray
Patients not diagnosed with lung cancer during the course of the study, will be offered an exit chest x-ray after 5 years or sooner if they withdraw from the trial before 5 years. This could help identify a lung cancer that may not have been associated with symptoms earlier.
Procédure: Autofluorescence bronchoscopy
The bronchial tree will be inspected first under white light and then under blue light. All areas that appear abnormal will initially be documented and only sampled when the bronchoscopic examination has been completed.
Autres noms:
  • AFB
Procédure: CT scan
All patients with abnormal sputum cytology and/or cytometry will undergo low dose spiral CT without contrast.

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
Proportion of lung cancer that is diagnosed as stage I or II
Délai: 5 years
In the control arm, it is expected that only 15% of cancers will be detected early. In the surveillance arm, we expect that at the time of the first screen, the detection rate of prevalence cancers will be about 3%, from data reported in CT screening studies
5 years

Mesures de résultats secondaires

Mesure des résultats
Délai
Uptake of screening (the proportion of patients in the surveillance arm who undergo annual screening, among those invited to attend)
Délai: 5 Years
5 Years
Proportion of patients in the surveillance arm who have abnormal sputum cytology
Délai: 5 Years
5 Years
Proportion of patients in the surveillance arm who have abnormal sputum cytometry
Délai: 5 Years
5 Years
Death from lung cancer
Délai: Up to 15 years
Up to 15 years
Proportion of failed sputum samples (i.e., where it is not possible to obtain adequate sputum samples)
Délai: 5 Years
5 Years
Prevalence of pre-invasive disease in patients in the surveillance arm with abnormal cytometry
Délai: 5 Years
5 Years
Number of patients in the surveillance arm with pre-invasive lesions who develop lung cancer locally and at remote sites within the lung
Délai: 5 Years
5 Years

Collaborateurs et enquêteurs

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

Parrainer

University College, London

Les enquêteurs

  • Chaise d'étude: Stephen G. Spiro, University College London Hospitals

Publications et liens utiles

La personne responsable de la saisie des informations sur l'étude fournit volontairement ces publications. Il peut s'agir de tout ce qui concerne l'étude.

Publications générales

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

1 août 2007

Achèvement primaire (Réel)

1 mars 2011

Dates d'inscription aux études

Première soumission

6 août 2007

Première soumission répondant aux critères de contrôle qualité

6 août 2007

Première publication (Estimation)

8 août 2007

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Estimation)

21 décembre 2011

Dernière mise à jour soumise répondant aux critères de contrôle qualité

20 décembre 2011

Dernière vérification

1 décembre 2011

Plus d'information

Termes liés à cette étude

Mots clés

Termes MeSH pertinents supplémentaires

Autres numéros d'identification d'étude

  • CDR0000558413
  • CRUK-BRD/06/10
  • EU-20738
  • ISRCTN80745975

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .

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