Evidence map›Paper›PMID 15871635›Full record

Trial reportClinical pharmacokinetics2005

Pharmacokinetic profile of ganciclovir after its oral administration and from its prodrug, valganciclovir, in solid organ transplant recipients.

Hugh Wiltshire, Sarapee Hirankarn, Colm Farrell, Carlos Paya, Mark D Pescovitz, Atul Humar, Edward Dominguez, Kenneth Washburn, Emily Blumberg, Barbara Alexander and 3 more

Abstract readClinical TrialRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Clinical pharmacokinetics, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 3 pooled it
6.2field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

28 citing papers in PubMed, 3 syntheses or guidelines pooled it, 127 citations in OpenAlex.

  1. Pooled it
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  6. Pharmacokinetics of low and maintenance dose valganciclovir in kidney transplant recipients.American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons · 2008
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  20. Efficacy of valganciclovir and ganciclovir for cytomegalovirus disease in solid organ transplants: A meta-analysis.Journal of research in medical sciences : the official journal of Isfahan University of Medical Sciences · 2014
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors at 11 institutions in 3 countries.

Hugh WiltshireRoche Products Ltd, Welwyn Garden City, UK.
Sarapee Hirankarn
Colm Farrell
Carlos Paya
Mark D Pescovitz
Atul Humar
Edward Dominguez
Kenneth Washburn
Emily Blumberg
Barbara Alexander
Richard Freeman
Nigel Heaton
Valganciclovir Solid Organ Transplant Study Group
Pinnacle Clinical Research · USDuke Medical Center · USHospital of the University of Pennsylvania · USIndiana University · USKing's College London · GBRoche (United Kingdom) · GBThe University of Texas Health Science Center at San Antonio · USToronto General Hospital · CATufts Medical Center · USUniversity of Nebraska Medical Center · USWinnMed · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundValganciclovir (Valcyte) has recently been approved for the prevention of cytomegalovirus (CMV) disease in high-risk (CMV donor positive [D+]/recipient negative [R-]) solid organ transplant (SOT) recipients. Large-scale studies describing the pharmacokinetics of valganciclovir in SOT recipients are lacking. A recent randomised, double-blind study of valganciclovir in 364 D+/R- (intent-to-treat population) SOT recipients provided valuable data on which a population pharmacokinetic analysis was performed.

methodsThe pharmacokinetics of ganciclovir from oral ganciclovir (Cymevene, 1000 mg three times daily) and from valganciclovir (900 mg once daily) were described with plasma levels from 240 patients (1181 datapoints describing 449 pharmacokinetic profiles) using nonlinear mixed-effects modelling (NONMEM) software. A two-compartment pharmacokinetic model with separate absorption/metabolism and absorption parameters for valganciclovir and ganciclovir, respectively, was developed.

resultsExposure to ganciclovir from valganciclovir averaged 1.65-fold greater than that from oral ganciclovir (95% CI 1.58, 1.81); respective daily area under the plasma concentration-time curve values were 46.3 +/- 15.2 microg . h/mL and 28.0 +/- 10.9 microg . h/mL. The relative systemic exposure of ganciclovir was approximately 8-fold higher from valganciclovir than oral ganciclovir. Exposure to ganciclovir from valganciclovir was similar among liver, heart and kidney transplant recipients (46.0 +/- 16.1, 40.2 +/- 11.8 and 48.2 +/- 14.6 microg . h/ mL, respectively). Adherence to the prescribed dosing regimens, which were reduced for renal impairment, gave consistent exposure to ganciclovir.

conclusionOral valganciclovir produces exposures of ganciclovir exceeding those attained with oral ganciclovir, but in line with those reported after standard intravenous administration of ganciclovir. This indicates that oral valganciclovir is suitable in circumstances requiring prophylactic use of ganciclovir and allows for more convenient management of patients at risk of CMV disease.

Indexed as

Administration, OralAdultAgedAntiviral AgentsArea Under CurveCytomegalovirus InfectionsFemaleGanciclovirHumansMaleMiddle AgedModels, BiologicalOrgan TransplantationProdrugsValganciclovirAntiviral AgentsGanciclovirProdrugsValganciclovir

Identifiers

PMID15871635
OpenAlexW2071991687

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.