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Safety of Immunosuppression Minimization in Children and Adolescents After Kidney Transplantation

14. februar 2013 opdateret af: National Institute of Allergy and Infectious Diseases (NIAID)

Immunosuppression Minimization to Single Drug Therapy With Sirolimus (Rapamune) in Pediatric Transplantation

Kidney transplantation is widely considered to be the treatment of choice for children with End Stage Renal Disease (ESRD). The purpose of this study is to determine the safety of sirolimus monotherapy for long-term immunosuppression in children and adolescents after kidney transplantation.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Improvements in surgical techniques, donor selection, immunosuppression practices, and the enhanced experience of specialized pediatric transplant teams have all led to marked improvements in patient and kidney graft survival in infants and young children Long-term graft survival rates decrease in adolescents 11 to 17 years of age. Several studies have suggested this decrease may be the result of noncompliance with immunosuppressive medications in this age group. Therefore, protocols that minimize the use of immunosuppressive medications, while retaining kidney function are necessary for improving graft and patient survival in children. The purpose of this study is to determine the safety of sirolimus monotherapy for long-term immunosuppression in children and adolescents after kidney transplantation.

This study will enroll 10 participants who previously completed the CCTPT-PC01 study. The accrual period is scheduled for 12 months. The study follow-up period will last 96 weeks. Patients from the CCTPT-PC01 study have been maintained on sirolimus and mycophenolate mofetil (MMF) since 2-3 months post transplant. Enrolled participants receiving (MMF) or Azathioprine at study entry will have their doses withdrawn gradually over a period of 6 months. Dosage will be reduced by 25% initially and by 25% every 2 months resulting in complete withdrawal by 6 months.

This study will consist of 11 study visits after screening and study entry. Study visits will occur at weeks 1, 8, 16, 24, 32, 40, 48, 60, 72, 84, and 96. A physical exam, vital signs, sirolimus levels, as well as blood and urine collection will occur at all visits. A renal biopsy will be performed at week 96.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

7

Fase

  • Fase 1

Kontakter og lokationer

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

Studiesteder

  • Forenede Stater
    • California
      • Madera, California, Forenede Stater
        • Children's Hospital of Central California
      • San Francisco, California, Forenede Stater
        • UCSF Children's Hospital
    • Massachusetts
      • Boston, Massachusetts, Forenede Stater
        • Children's Hospital, Boston
    • Pennsylvania
      • Philadelphia, Pennsylvania, Forenede Stater
        • Children's Hospital, Philadelphia
    • Washington
      • Seattle, Washington, Forenede Stater
        • Children's Hospital and Regional Medical Center, Seattle

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 20 år (Barn, Voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Participant and/or parent guardian able to understand and willing to provide informed consent
  • Previously enrolled and completed the CCTPT-PC01 study and within the 36 months post-completion timeframe prior to study entry
  • Currently receiving sirolimus and MMF or azathioprine therapy
  • No history of acute rejection episodes
  • No evidence of acute or chronic rejection on the 24 month CCTPT-PC01 protocol biopsy or any subsequent biopsy obtained after that time prior to study entry
  • PRA (Class I and II) less than 5% at study entry
  • No evidence of donor specific antibody at study entry
  • Stable renal function with GFR greater than 60 cc/min 1.73M^2 using the Schwartz calculated method
  • A negative pregnancy test for female participants of childbearing potential at study entry
  • Agreement by female and male participants to use FDA approved methods of contraception.

Exclusion Criteria:

  • Total lymphocyte count less than 400 mm^3
  • Acute or chronic infection at study entry
  • Treatment with investigational drug within 1 month prior to study entry
  • Mental illness or history of drug or alcohol abuse that, in the opinion of the investigator, would interfere with the study
  • History of allergic reaction to Iodine GFR assay
  • History of malignancy within the past 12 months
  • Inability or unwillingness to give informed consent or comply with the study protocol

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Forebyggelse
  • Tildeling: Ikke-randomiseret
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: 1

Participants who have been maintained on MMF at study entry will start the study on 600 mg/m2 MMF orally daily. Participants who have been maintained on Azathioprine due to MMF intolerance will receive 1 mg/kg Azathioprine orally daily.

Participants will continue receiving sirolimus throughout the study. However, MMF or Azathioprine will be withdrawn gradually over a period of at least 6 months. Dosage will be reduced by 25% initially and by 25% every subsequent 2 months resulting in complete withdrawal by 6 months.
Medicin: Sirolimus
Oral tablets or liquid taken every 12 hours. Dosage adjusted to attain target trough levels of 8-12 ng/mL. Participants who have maintained such levels at study entry on once daily dosage will be permitted to continue on once daily dosing.
Andre navne:
  • Rapamycin, Rapamune
Medicin: MMF or Azathioprine
600 mg/m2 MMF taken orally daily or Azathioprine orally daily. Dosage of Azathioprine is dependent on weight. MMF or Azathioprine will be reduced by 25% initially and by 25% every 2 months resulting in complete withdrawal by 6 months.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Tidsramme
Per-person incidence of acute rejection episodes and death or graft loss
Tidsramme: Throughout study
Throughout study

Sekundære resultatmål

Resultatmål
Tidsramme
Incidence of chronic allograft dysfunction
Tidsramme: Throughout study
Throughout study
Incidence of sub-clinical rejection
Tidsramme: Throughout study
Throughout study
Incidence of hospitalizations
Tidsramme: Throughout study
Throughout study
Incidence of surgical complications
Tidsramme: Throughout study
Throughout study
Resumption of MMF or other therapy
Tidsramme: Throughout study
Throughout study
Incidence, severity, and treatment of anemia, hypertension, hyperlipidemia, proteinuria, thrombocytopenia, and leukopenia
Tidsramme: Throughout study
Throughout study
Incidence, severity, and treatment of opportunistic infections
Tidsramme: Throughout study
Throughout study
Incidence of biopsy proven PTLD
Tidsramme: Throughout study
Throughout study
Renal function assessed by measured GFR
Tidsramme: At baseline, week 48 and week 96
At baseline, week 48 and week 96
Development of donor-specific or non-specific anti-HLA antibodies
Tidsramme: Throughout study
Throughout study
Evolution of immune response in cellular, humoral, and molecular assays from baseline through week 96
Tidsramme: Throughout study
Throughout study

Samarbejdspartnere og efterforskere

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

Sponsor

National Institute of Allergy and Infectious Diseases (NIAID)

Efterforskere

  • Studiestol: William H. Harmon, MD, Boston Children's Hospital

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Hjælpsomme links

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. maj 2009

Primær færdiggørelse (Faktiske)

1. december 2012

Studieafslutning (Faktiske)

1. december 2012

Datoer for studieregistrering

Først indsendt

6. oktober 2008

Først indsendt, der opfyldte QC-kriterier

6. oktober 2008

Først opslået (Skøn)

8. oktober 2008

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

15. februar 2013

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

14. februar 2013

Sidst verificeret

1. februar 2013

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • DAIT CTOTC-01

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