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Study of Subclinical Viral Infection

7. juni 2012 opdateret af: Jodi Smith, Seattle Children's Hospital

Subclinical Viral Infection and Renal Allograft Injury

Chronic allograft injury is the leading cause of graft loss in renal transplantation. The shortage of available kidneys for transplantation has reached crisis levels with increasing numbers of waiting list mortalities. Strategies to prolong graft survival are urgently needed. The pediatric and young adult transplant population is one in which repeat transplantation is inevitable and therefore, this group is one who will especially benefit from intervention to prolong graft survival. The hypothesis of this proposal is that subclinical viral infection is a modifiable risk factor in the pathogenesis of chronic allograft injury. The young age of the proposed study population is an ideal one to evaluate this objective due to the high prevalence of seronegative recipients. The studies outlined will determine the temporal relationship betWeween subclinical viremia, renal allograft infection and allograft injury. This will be the first prospective study in renal transplant recipients to systematically monitor subclinical viral infection both in peripheral blood and in the renal allograft with concurrent quantitative measures of renal function, allograft fibrosis, and innate immune activation. The investigators have chosen these 3 outcomes because they evaluate a spectrum of renal allograft injury and represent different stages - from early to late - in the pathophysiology that leads to renal allograft dysfunction. In addition, the role of virus specific T cell immune responses in the control of subclinical viral infection and associated allograft injury will be determined. These data are critical as they will provide insights into the pathogenesis of injury and will guide development of interventions strategies. Importantly, the current treatment strategies for viral disease do not prevent subclinical viral infection. Thus, the results of this study may identify that prevention, prophylaxis and/or treatment of subclinical viral replication as a long term strategy to prevent chronic allograft injury and prolong graft survival.

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

  • Forenede Stater
    • Washington
      • Seattle, Washington, Forenede Stater, 98105
        • Rekruttering
        • Seattle Children's Hospital

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

1 år til 25 år (Barn, Voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

Pediatric and young adult renal transplant recipients (1<25yrs) of their first kidney transplant from Seattle Children's Hospital and University of Washington Medical Center.

Beskrivelse

Inclusion Criteria:

  • Subject and/or parent guardian must be able to understand and provide informed consent or assent
  • Male or Female, Seattle Children's Hospital participants must be 1-<21 yrs and University of Washington Medical Center participants 18-25yrs.
  • Diagnosed with End Stage Renal Disease (ESRD)

Exclusion Criteria:

  • Inability or unwillingness of subject and/or parent guardian to provide informed consent
  • Pregnancy

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Change in measured GFR from baseline
Tidsramme: time of transplant, one time between months 3 and 6, and during months 12, and 24 after the transplant
Single infusion of iohexol clearance to measure GFR
time of transplant, one time between months 3 and 6, and during months 12, and 24 after the transplant

Sekundære resultatmål

Resultatmål
Tidsramme
Change in interstitial fibrosis and tubular atrophy of renal allograft from baseline
Tidsramme: Renal biopsies will be performed at time of transplant, 3-6 m, 12m, and 24m post-transplant. Precise measures of renal function, allograft fibrosis, and innate immune activation will be performed at baseline, 6m, 12, 24m post-transplant.
Renal biopsies will be performed at time of transplant, 3-6 m, 12m, and 24m post-transplant. Precise measures of renal function, allograft fibrosis, and innate immune activation will be performed at baseline, 6m, 12, 24m post-transplant.
Change in innate immune activation of renal allograft from baseline
Tidsramme: 6, 12, and 24 months after the transplant
6, 12, and 24 months after the transplant

Samarbejdspartnere og efterforskere

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

Sponsor

Seattle Children's Hospital

Samarbejdspartnere

University of Washington

Efterforskere

  • Ledende efterforsker: Jodi Smith, MD, Seattle Children's Hospital

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. oktober 2011

Primær færdiggørelse (Forventet)

1. oktober 2016

Studieafslutning (Forventet)

1. oktober 2016

Datoer for studieregistrering

Først indsendt

6. juni 2012

Først indsendt, der opfyldte QC-kriterier

7. juni 2012

Først opslået (Skøn)

8. juni 2012

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

8. juni 2012

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

7. juni 2012

Sidst verificeret

1. juni 2012

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • R01DK088914-01A1 (U.S. NIH-bevilling/kontrakt)

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 .

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