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Letermovir vs Valganciclovir in CMV R+ Kidney Transplant

6. maj 2026 opdateret af: Elisabeth Kincaide

Letermovir Versus Valganciclovir for 90 Days in CMV Seropositive Kidney Transplant Recipients: Results of a Single-center Experience.

The purpose of this study is to find out whether letermovir can help prevent cytomegalovirus (CMV) infection in kidney transplant recipients who are CMV seropositive. To do this, researchers will compare patients who received letermovir with a group of historical patients who received valganciclovir ("mini dose"). Both groups will be on CMV prophylaxis drug for 90 days post-transplant.

The main question the study wants to answer is:

• Does letermovir work as well as valganciclovir in preventing CMV infections during the first 12 months after a kidney transplant?

The study will also look at other important questions:

  • Is letermovir easier for patients to tolerate than valganciclovir?
  • How long does it take for a CMV infection to appear in each group?
  • Are there differences in "breakthrough" CMV infections between the two medications?
  • For patients who develop CMV that becomes resistant to treatment, are the resistance patterns different between the two groups

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

The purpose of this study is to evaluate the efficacy and tolerability of letermovir compared to standard-of-care, valganciclovir, for the prevention of clinically significant cytomegalovirus (CMV) infection in CMV moderate risk adult kidney transplant recipients.

A 3:1 match of historical valganciclvoir:letermovir arm

• Matching criteria:

  • Induction agent: lymphocyte-depleting (rabbit anti-thymocyte globulin or alemtuzumab) versus non-lymphocyte depleting (basiliximab)
  • Delayed graft function (dialysis within one week of kidney transplant)
  • MMF dose at de novo discharge (weight-based vs non-weight based)

Study Arms:

  • Letermovir Arm:

    • Letermovir 480 mg PO daily starting POD 4 through 10 OR
    • Letermovir 240 mg PO daily if given concomitantly with cyclosporine, for 90 days
    • Will be given with acyclovir 400 mg PO BID (or 200 PO BID if CrCl <25) for 90 days

  • Historical Arm:

    • Valganciclovir 450 mg PO daily (adjusted for renal function) for 90 days

      • CrCl 25-30: valganciclovir 450 mg PO q 48 h
      • CrCl <25: Valganciclovir 450 mg PO three times weekly

Outcomes:

  • Primary Efficacy Objective:

    • Incidence of patients with clinically significant CMV infection at 12 months post kidney transplant in patients who received letermovir versus standard of care valganciclovir

      • Clinically Significant CMV Infection: CMV disease or symptomatic viremia requiring therapeutic intervention

  • Secondary Objectives:

    • Tolerability:

      • Proportion of patients with leukopenia or neutropenia (composite) in patients who received letermovir versus standard of care valganciclovir
  • Leukopenia: white blood cells < 3500 cells/uL

  • Neutropenia: absolute neutrophil count < 1000 cells/uL

    • Intolerability or early drug discontinuation

  • Proportion of patients who discontinue the study drug prematurely due to adverse events or intolerance

    o Efficacy:

    • Time-to clinically significant CMV infection (days)
    • Breakthrough CMV while on CMV prophylaxis

  • CMV Viremia

    • Detection of CMV DNA in blood via PCR

  • Clinically significant CMV infection

    • CMV resistance
  • Detection of CMV strains with genotypic or phenotypic resistance to antiviral agents used in prophylaxis or treatment

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

300

Fase

  • Fase 4

Kontakter og lokationer

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

Studiekontakt

Undersøgelse Kontakt Backup

Studiesteder

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

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria (both arms):

  • ≥18 years old
  • Kidney transplant recipient with documented CMV IgG seropositive status (R+) within 90 days prior to transplant

Inclusion Criteria (letermovir arm):

  • Males agree to use contraception and refraining from donating sperm for 290 days post-treatment initiation
  • Females of child-bearing potential agree to follow contraception guidance for 290 days post-treatment initiation

Exclusion Criteria (both arms):

  • Multiorgan organ transplant
  • Received previous solid organ transplant or HSCT
  • Unable to take oral medications
  • Uncontrolled infections at the time of enrollment
  • Hemodynamically unstable or on mechanical ventilation at the time of enrollment
  • Documented HBsAg or detectable HCV RNA 90 days prior to enrollment or HCV+ donor
  • Pregnant or breastfeeding or planning to be pregnant, breastfeeding or donating eggs during study period and 90 days post cessation
  • Received any anti-CMV drug treatment within 7 days prior to enrollment
  • Current user of recreational or illicit drugs or alcohol dependence
  • History of CMV disease prior to enrollment

Exclusion Criteria (letermovir arm):

  • Previously participated in a letermovir study or any other study with CMV investigational agents
  • On dialysis or plasmapheresis at the time of enrollment
  • Known or suspected hypersensitivity to active or inactive ingredients from letermovir or acyclovir formulations
  • Child-Pugh Class C severe hepatic insufficiency
  • Currently participating or has participated in a study with an unapproved compound of device within 28 days or 5 half-lives of this study
  • Contraindications per letermovir or acyclovir package insert: patients on pimozide, ergot alkaloids; or pitavastatin and simvastatin when co-administered with cyclosporine

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: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Aktiv komparator: Letermovir
Prospective letermovir prophylaxis
Medicin: Letermovir
Letermovir 480 mg PO daily or 240 mg PO daily (if on cyclosporine) for 90 days post kidney transplant
Andet: Valganciclovir
Historical valganciclovir prophylaxis
Medicin: Valganciclovir CMV Prophylaxis
Valganciclovir 450 mg PO daily for 90 days post kidney transplant (Historical Control)

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
CMV Infection
Tidsramme: 12 months post kidney transplant
Incidence of patients with clinically significant CMV infection at 12 months post kidney transplant in patients who received letermovir versus standard of care valganciclovir.
12 months post kidney transplant

Samarbejdspartnere og efterforskere

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

Sponsor

Elisabeth Kincaide

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 (Anslået)

1. maj 2026

Primær færdiggørelse (Anslået)

1. november 2028

Studieafslutning (Anslået)

1. november 2028

Datoer for studieregistrering

Først indsendt

29. april 2026

Først indsendt, der opfyldte QC-kriterier

29. april 2026

Først opslået (Faktiske)

6. maj 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

8. maj 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

6. maj 2026

Sidst verificeret

1. marts 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • STUDY00000831

Plan for individuelle deltagerdata (IPD)

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INGEN

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