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Enhancement of in-Vitro GC Function in Patients With COPD

15. november 2019 oppdatert av: Imperial College London

Enhancement of In-vitro GC Function in Patients With COPD. A Randomised, Double Blind, Placebo Controlled, Parallel-group Study to Investigate the Effect of Theophylline and Fluticasone on Induced Sputum Cells Obtained Form COPD Patients

The investigator wish therefore to continue these studies on theophylline principally by conducting a small clinical pilot study on 20-30 COPD patients in a randomised, double-blind, placebo-controlled, parallel-group study.

Studieoversikt

Detaljert beskrivelse

The global burden of COPD - a common and debilitating chronic inflammatory disease that is characterised by the progressive development of airflow limitation (shortness of breath - SOB) and is poorly reversible with currently available drugs -is increasing. Cigarette smoking is strongly linked with the ongoing inflammation; inflammation that can continue even when the patient has stopped smoking. The severity of airflow limitation (SOB) is correlated with the degree of pulmonary (lung) inflammation.

Histone deacetylases (HDACs)are important molecules in suppressing this pulmonary inflammation. We have recently shown that patients with COPD have a reduction in total HDAC which correlates with the severity of their lung disease.

Corticosteroids (anti-inflammatory treatment) act, at least in part, by recruitment of these HDACs to the site of active inflammatory gene transcription (which reduces the production of inflammatory molecules) and are widely used in COPD in patients with severe disease. Unfortunately, in COPD, inhaled corticosteroids seem to have little effect on the underlying inflammation (though in a selective group of patients with COPD they do reduce the number of infections a patient may have by a small amount).

Theophylline has been used in the treatment of asthma and COPD for over 70 years, but its use has recently declined. Data so far obtained in primary cells (cells from patients used in the laboratory) from COPD patients suggests that low dose theophylline (~5mg/l) should be effective in restoring steroid sensitivity in patients with COPD (and hence reduce inflammation thus improving SOB).

Studietype

Intervensjonell

Registrering (Faktiske)

49

Fase

  • Fase 2

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

    • Berks
      • Windsor, Berks, Storbritannia, SL4 3DP
        • Windsor chest clinic KEVII Hospital

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

40 år til 80 år (Voksen, Eldre voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

Alle

Beskrivelse

Inclusion Criteria:Participants with COPD with an FEV1 of 80-30% predicted. This will incorporate the majority of participants with COPD seen within the chest clinic. Patients with an FEV1 > 80% predicted are not generally severe enough to warrant hospital follow up. These patients are also unlikely to have severe enough disease (and therefore airway inflammation) which may be modified by the therapeutic agents we are studying.

Patients with an FEV1 < 30% tend to have more severe symptom limitation and generally (though not always) find participation in a clinical trial involving 4 visits to the clinic difficult. Their airway disease is also generally less responsive to therapeutic intervention and as a consequence finding measurements which show changes to these therapeutic interventions is more difficult.

COPD patients

  • All participants will be classified to Stage 2-3 of the GOLD (Global initiative for Obstructive Lung Disease) guidelines
  • Male or female, aged 45-80 years (according to GOLD guidelines)
  • 30% < FEV1 < 80% predicted
  • FEV1/FVC < 70%
  • Cigarette exposure of >10 pack-years#
  • With or without chronic symptoms (cough, sputum production, dyspnea).
  • Steroid therapy will be stopped before run-in, but long acting bronchodilators are acceptable.
  • The participants are able to give informed consent # The smoking history should include both the number smoked, for how long, and an estimate of total pack-years of smoking. One pack of 20 cigarettes smoked per day for 1 year = one pack year. Total pack years = No. cigarettes smoked per day/20 x no. years of smoking

Exclusion Criteria:

Any history or evidence of asthma

  • Pregnancy, breast-feeding or planned pregnancy during the study. Fertile women not using acceptable contraceptive measures, as judged by the investigator
  • Hospital admission with respiratory infection within the last 6 months
  • Upper respiratory infection within the last 4 weeks
  • Participants who have received research medication within the previous one month
  • Participants unable to give informed consent
  • Any mental condition rendering the participant unable to understand the nature, scope and possible consequences of the study
  • Known or suspected hypersensitivity to study therapy or excipients
  • Participants with significant or unstable ischemic heart disease, arrhythmia, cardiomyopathy, heart failure, uncontrolled hypertension as defined by the investigator, or any other relevant cardiovascular disorder as judged by the investigator
  • Any current respiratory tract disorders other than COPD, which is considered by the investigator to be clinically significant
  • Any significant disease or disorder (e.g. gastrointestinal, liver, renal, neurological, musculoskeletal, endocrine, metabolic, malignant, psychiatric, major physical impairment) or abnormality laboratory tests which, in the opinion of the investigator, may either put the participant at risk because of inclusion in the study, or may influence the results of the study, or the participants ability to take part in the study

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Behandling
  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Trippel

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Placebo komparator: Placebo
Inhaled Theophylline placebo capsule, then placebo, then active Theophylline
Theophylline placebo capcule
Aktiv komparator: Steroid
Inhaled Theophylline placebo capsule, then Fluticasone Propionate 500 ug bid, then active Theophylline
Theophylline placebo capcule
500 u

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Sputum Inflammatory Cell Counts
Tidsramme: 10 weeks
Supernatant collect, cell pellets count on slides
10 weeks

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Interleukin 8 (IL8)
Tidsramme: 10 weeks
Interleukin 8 (IL8) assessed from sputum
10 weeks
Total Sputum Eosinophils
Tidsramme: 10 weeks
Total eosinophils cells assessed from sputum
10 weeks

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Etterforskere

  • Hovedetterforsker: ian adcock, PhD, Imperial College London

Publikasjoner og nyttige lenker

Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

1. april 2006

Primær fullføring (Faktiske)

1. august 2007

Studiet fullført (Faktiske)

1. august 2007

Datoer for studieregistrering

Først innsendt

18. oktober 2005

Først innsendt som oppfylte QC-kriteriene

18. oktober 2005

Først lagt ut (Anslag)

19. oktober 2005

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

4. desember 2019

Siste oppdatering sendt inn som oppfylte QC-kriteriene

15. november 2019

Sist bekreftet

1. november 2019

Mer informasjon

Begreper knyttet til denne studien

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

NEI

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .

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