Letermovir Versus Valganciclovir to Prevent Human Cytomegalovirus Disease in Kidney Transplant Recipients (MK-8228-002)



Status:Recruiting
Healthy:No
Age Range:18 - Any
Updated:3/29/2019
Start Date:May 3, 2018
End Date:September 19, 2021
Contact:Toll Free Number
Email:Trialsites@merck.com
Phone:1-888-577-8839

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A Phase III, Randomized, Double-Blind, Active Comparator-Controlled Study to Evaluate the Efficacy and Safety of MK-8228 (Letermovir) Versus Valganciclovir for the Prevention of Human Cytomegalovirus (CMV) Disease in Adult Kidney Transplant Recipients

The primary objective of this study is to evaluate the efficacy of letermovir (LET) versus
valganciclovir (VGCV) in preventing CMV disease in adult kidney transplant recipients. The
primary hypotheses are that LET is non-inferior to VGCV; and if non-inferiority is
demonstrated, that LET is superior to VGCV, in preventing CMV disease through 52 weeks
post-transplant.


Inclusion Criteria:

- Have a documented negative serostatus for CMV within 180 days prior to randomization.

- Anticipate receiving a primary or secondary allograft kidney from a CMV IgG
seropositive (D+) donor at the time of screening AND have received a primary or
secondary allograft kidney from a documented D+ donor at the time of randomization.

- Be within 0 (i.e. day of transplantation) to 7 days (inclusive) post-kidney transplant
at the time of randomization.

- Males agree to use contraception during the treatment period, and for at least 90 days
after the last dose of study treatment, and refrain from donating sperm during this
period.

- Female is not pregnant, not breastfeeding, and is not a woman of childbearing
potential (WOCBP), OR if a WOCBP, agrees to follow the contraception guidance during
the treatment period and for at least 90 days after the last dose of study treatment.

Exclusion Criteria:

- Has received a previous solid organ transplant or hematopoietic stem cell transplant
(HSCT). Note: Participants who have received a prior primary allograft kidney may be
enrolled, provided that all other inclusion/exclusion criteria are met.

- Is a multi-organ transplant recipient (e.g. kidney-pancreas). Double kidney transplant
recipients (i.e. transplant of two kidneys from the same donor to the same recipient
simultaneously) will be excluded.

- Has a history of CMV disease or suspected CMV disease within 6 months prior to
randomization.

- Has suspected or known hypersensitivity to active or inactive ingredients of LET
formulations, VGCV, GCV, and/or ACV formulations.

- Is on dialysis at the time of randomization.

- Has Child-Pugh Class C severe hepatic insufficiency at screening.

- Has both moderate hepatic insufficiency AND moderate-to-severe renal insufficiency at
screening.

- Has any uncontrolled infection on the day of randomization.

- Has documented positive results for human immunodeficiency virus antibody (HIV-Ab)
test at any time prior to randomization, or for hepatitis C virus antibody (HCV-Ab)
and with detectable HCV ribonucleic acid (RNA) within 90 days prior to randomization,
or hepatitis B surface antigen (HBsAg) within 90 days prior to randomization.

- Requires mechanical ventilation, or is hemodynamically unstable, at the time of
randomization.

- Has a history of malignancy ≤5 years prior to signing informed consent.

- Is pregnant or expecting to conceive, is breastfeeding, or plans to breastfeed from
the time of consent through at least 90 days following cessation of study therapy.

- Is expecting to donate eggs or sperm starting from the time of consent through at
least 90 days following cessation of study therapy.

- Has received within 30 days prior to randomization or plans to receive during the
study any of the following anti-CMV IgG antibody treatment or anti-CMV drug therapy
including the following: Cidofovir, CMV hyper-immune globulin, Any investigational CMV
antiviral agent/biologic therapy.

- Has received within 7 days prior to randomization or plans to receive during the study
any of the following anti-CMV drug therapy: LET, GCV, VGCV, Foscarnet, ACV,
Valacyclovir, Famciclovir.

- Is a user of recreational or illicit drugs or has had a recent history (within the
last year) of drug or alcohol abuse or dependence.

- Is currently participating or has participated in a study with an unapproved
investigational compound or device within 28 days, or 5× half-life of the
investigational compound whichever is longer, of initial dosing on this study.

- Has previously participated in this study or any other study involving LET.

- Has previously participated or is currently participating in any study involving
administration of a CMV vaccine or another CMV investigational agent, or is planning
to participate in a study of a CMV vaccine or another CMV investigational agent during
the course of this study.
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