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Cidofovir versus bedste støttende behandling for hæmoragisk blærebetændelse

17. september 2026 opdateret af: M.D. Anderson Cancer Center

En fase II randomiseret undersøgelse af cidofovir versus bedste støttende behandling for polyomavirus hominis type I (BK) virusrelateret hæmoragisk blærebetændelse efter stamcelletransplantation

The goal of this clinical research study is to learn if adding cidofovir to the standard of care can improve symptoms of hemorrhagic cystitis caused by the BK virus as compared to standard of care alone. The safety of cidofovir will also be studied.

Studieoversigt

Status

Aktiv, ikke rekrutterende

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

The Study Drug:

Cidofovir is an anti-viral drug that is designed to treat or prevent infections caused by certain kinds of viruses.

Study Groups:

If you are found to be eligible to take part in this study, you will be randomly assigned (as in the flip of a coin) to 1 of 2 study groups and you will have an equal chance of being in either group:

  • If you are in Group 1, you will receive standard of care drugs and cidofovir. The doctor will tell you more about the standard of care drugs that you will take and the risks for them.
  • If you are in Group 2, you will only receive standard of care drugs.

Study Drug Administration:

If you are in Group 1, you will receive cidofovir by vein over about 1 hour 3 times per week. You will also receive standard of care, which may include oral pain drugs taken every 4 to 6 hours as needed, oral drugs for urinary urgency taken 2 times daily, and fluids given by vein to increase your urination rate.

If you are in Group 2, you will only receive the standard of care, as described above.

Study Visits:

Each week:

  • Blood (about 2 tablespoons) will be drawn for routine tests.
  • You will have a physical exam, including measurement of your vital signs.

Every 2 weeks, you will complete the questionnaire about urinary problems.

Length of Study:

If you are in Group 1, you may continue taking the study drug for up to 4 weeks. Group 2 will take the standard of care for 4 weeks. If the doctor thinks it is needed Groups 1 and 2 can continue to receive standard of care after this study is over. If your symptoms get worse during the study and you are not receiving cidofovir, you may be eligible for further treatments, which may include cidofovir, after the study ends. You will no longer be able to take the study drug if the disease gets worse or intolerable side effects occur.

Your participation on the study will be over once you have completed the end-of-treatment visit and the follow-up visit.

End-of-Treatment Visit:

After you finish treatment:

  • Urine will be collected to test the level of BK virus.
  • You will complete the questionnaire about urinary problems.

Follow-up Visit:

Four (4) weeks after treatment ends:

  • You will have a physical exam, including measurement of your vital signs.
  • Urine will be collected to test the level of BK virus.

This is an investigational study. Cidofovir is FDA approved and commercially available for the treatment of several viral infections. Its use in patients with the BK virus after a stem cell transplant is investigational.

Up to 40 patients will take part in this study. All will be enrolled at MD Anderson.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

27

Fase

  • Fase 2

Kontakter og lokationer

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

Studiesteder

  • Forenede Stater
    • Texas
      • Houston, Texas, Forenede Stater, 77030
        • University of Texas MD Anderson Cancer Center

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

6 år og ældre (Barn, Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  1. HSCT patients with symptomatic hemorrhagic cystitis (minimal Grade 1 symptoms of HC per NCI criteria) and positive BKV in urine >1x103 DNA copies/ml
  2. Age >/= 6 years
  3. Patient must sign the informed consent document.

Exclusion Criteria:

  1. Creatine clearance < 55 ml/min, calculated using ideal body weight (IBW) using Cockcroft-Gault equation
  2. Concomitant use of foscarnet, liposomal amphotericin B or aminoglycoside
  3. Use of cidofovir for bladder instillation
  4. Use of formalin or hyperbaric oxygen treatment

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Standard of Care + Cidofovir

Cidofovir 0.5 mg/kg IV 3 x week for 4 weeks
Medicin: Cidofovir

0.5 mg/kg by vein (IV) 3 times a week for 4 weeks.

Andre navne:
  • Vistide
Aktiv komparator: No Cidofovir

Standard of Care: Pharmacologic management of pain, spasms, and urinary urgency with medications, hyper-hydration, or continuous bladder irrigation.
Andet: No Cidofovir

Standard of Care: Pharmacologic management of pain, spasms, and urinary urgency with medications, hyper-hydration, or continuous bladder irrigation.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Number of Patients with Microbiologic Response
Tidsramme: 8 weeks

Response defined as improvement in symptoms based on questionnaire, reduction or stability in grade of hemorrhagic cystitis, and level of virus must be a 1 log reduction from baseline when the BKV was first diagnosed.
8 weeks

Samarbejdspartnere og efterforskere

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

Sponsor

M.D. Anderson Cancer Center

Efterforskere

  • Ledende efterforsker: Borje S. Andersson, MD,PHD, M.D. Anderson Cancer Center

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.

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 (Faktiske)

17. marts 2011

Primær færdiggørelse (Anslået)

15. marts 2028

Studieafslutning (Anslået)

15. marts 2028

Datoer for studieregistrering

Først indsendt

10. februar 2011

Først indsendt, der opfyldte QC-kriterier

11. februar 2011

Først opslået (Anslået)

14. februar 2011

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

18. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

17. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 2010-0518
  • NCI-2011-00250 (Registry Identifier: NCI CTRP)

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ja

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

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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