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Pharmacology of Immunosuppressants Following Heart Transplantation

25. august 2011 opdateret af: Nigel E. Drury

Correlation of Immunosuppressant Pharmacokinetics, Pharmacodynamics, Pharmacogenomics and Outcomes Following Heart Transplantation

The ongoing success of transplantation is largely due to the development of drugs to stop the patient's body from rejecting the new organ. In addition to steroids, two main types of drug are used to suppress the immune system following heart transplantation: calcineurin inhibitors (Ciclosporin-A or Tacrolimus) and mycophenolate. However, different patients respond in different ways to these drugs, with the same dose leading to different levels of the drug in the blood. This varies due to genetic and other factors such as age, kidney function and the use of other drugs. Therefore, the levels of immunosuppressive drugs in the blood are routinely measured and the dose adjusted accordingly. However, some patients still experience episodes of rejection despite apparently acceptable levels. In this study, the investigators will measure levels of the drugs (in the blood, in a type of white blood cell called T-cells and in the heart muscle) and the effectiveness of the drugs on T-cells. The investigators will compare these levels with patient genetic factors and the amount of rejection measured on heart biopsies. This will enable us to better understand how the blood and tissue levels of these drugs change with genetic and other factors in order to optimise immunosuppressive therapy and further improve outcomes from heart transplantation.

Studieoversigt

Status

Ukendt

Betingelser

Undersøgelsestype

Observationel

Tilmelding (Forventet)

100

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

    • South Australia
      • Adelaide, South Australia, Australien
        • Basil Hetzel Institute for Medical Research
    • West Midlands
      • Birmingham, West Midlands, Det Forenede Kongerige, B15 2WB
        • Queen Elizabeth Hospital Birmingham

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

Heart transplantation at the Queen Elizabeth Hosptial Birmingham.

Beskrivelse

Inclusion Criteria:

  • All patients undergoing heart transplantation

Exclusion Criteria:

  • Decline participation
  • Previous transplantation of another organ and already receiving chronic immunosuppressive therapy

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Observationsmodeller: Kohorte
  • Tidsperspektiver: Fremadrettet

Kohorter og interventioner

Gruppe / kohorte
Post-heart transplant
All patients undergoing heart transplantation at the Queen Elizabeth Hosptial Birmingham in the last 12 months or in the next year.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Correlation of immunosuppressant drug levels in different compartments with evidence of rejection
Tidsramme: Multiple timepoints in first 12 months after transplantation
We will compare the levels of the drugs in different compartments of the body (in the blood, within white blood cells and within the heart muscle itself) with how well the drugs are working ie. how well the heart is functioning and the level of rejection seen on routine heart biopsies. Drug levels will be measured at C0 (trough) and C2 (peak).
Multiple timepoints in first 12 months after transplantation

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Correlation of individual patient genetic and other factors with levels of immunosuppressant drugs in different compartments
Tidsramme: Multiple timepoints in first 12 months after transplantation
We will also compare these results with patient genetic and other factors (eg. age, kidney function, use of other drugs) to better understand how these factors affect the levels of the drugs in different compartments of the body. Drug levels will be measured at C0 (trough) and C2 (peak).
Multiple timepoints in first 12 months after transplantation

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Efterforskere

  • Ledende efterforsker: Robert S Bonser, MD FRCS, University Hospital Birmingham

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. november 2011

Datoer for studieregistrering

Først indsendt

23. august 2011

Først indsendt, der opfyldte QC-kriterier

25. august 2011

Først opslået (Skøn)

26. august 2011

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

26. august 2011

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

25. august 2011

Sidst verificeret

1. august 2011

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • RRK4220

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med Hjertetransplantation

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