A Phase 3, Open-Label, Single-Arm Study to Assess the Efficacy, Safety, and Pharmacokinetics of Maribavir for the Treatment of Cytomegalovirus (CMV) Infection in Japanese Recipients of a Hematopoietic Stem Cell Transplant (HSCT) or Solid Organ Transplant (SOT)

  • STATUS
    Recruiting
  • End date
    Apr 11, 2023
  • participants needed
    44
  • sponsor
    Takeda
Updated on 16 September 2022

Summary

The main aim of the study is to check if treatment with maribavir can protect Japanese people against Cytomegalovirus (CMV) infection, and to check side effect from the study treatment and how much maribavir participants can take without getting side effects from it.

Japanese recipients of a hematopoietic stem cell transplant (HSCT) or solid organ transplant (SOT) will take Maribavir tablets two times a day for 8 weeks in this study.

During the study, participants will visit their study clinic 18 times as a maximum.

Details
Condition Cytomegalovirus (CMV)
Treatment Maribavir
Clinical Study IdentifierNCT05137717
SponsorTakeda
Last Modified on16 September 2022

Eligibility

Yes No Not Sure

Inclusion Criteria

Be Japanese with Japanese nationality, >=16 years of age at the time of consent
Be a recipient of HSCT or SOT that is functioning at the time of Screening
Have a documented CMV infection with a screening value of >455 IU/mL in plasma in 2 consecutive assessments, separated by at least 1 day, as determined by a central specialty laboratory qPCR or comparable quantitative CMV DNA results. Both samples should be taken within 14 days prior to first dose of study treatment with the second sample obtained within 5 days prior to first dose of study treatment at Visit 2/Day 0
Have the current CMV infection after HSCT or SOT, either primary or reactivation, which, in the investigator's opinion, requires treatment and have any of the following
Asymptomatic participants: The subjects do not have CMV tissue-invasive disease or CMV syndrome (SOT subjects only) at Baseline, as determined by the investigator according to the criteria specified by Ljungman et al., 2017
Refractory or resistant participants: The participant must have a current CMV infection that is refractory to the most recently administered of the anti-CMV treatment agent(s). Refractory is defined as documented failure to achieve >1 log10 (common logarithm to base 10) decrease in CMV DNA level in plasma after a 14 day or longer treatment period with IV ganciclovir/oral valganciclovir, or IV foscarnet
Have all of the following results as part of screening laboratory assessments (results
from either the central laboratory or a local laboratory can be used for
qualification)
Absolute neutrophil count >=1,000/mm^3 (1.0 × 10^9/L)
Platelet count >=25,000/mm^3 (25 × 10^9/L)
Hemoglobin >=8 g/dL
Estimated creatinine clearance >=30 mL/minute (estimated glomerular filtration rate by Modification of Diet in Renal Disease)
Be able to swallow tablets
Have life expectancy of >=8 weeks
Weigh >=40 kg

Exclusion Criteria

Have central nervous system (CNS) CMV tissue-invasive disease or CMV retinitis as assessed by the investigator at the time of Screening and prior to administration at Visit 2/Day 0
Be receiving valganciclovir, ganciclovir, foscarnet, or letermovir when study treatment is initiated, or anticipated to require 1 of these agents during the 8-week treatment period
NOTE: Participants receiving letermovir must discontinue 3 days prior to first
dose of study treatment. Ganciclovir, valganciclovir, and foscarnet must be
discontinued prior to the first dose of study treatment
Have known hypersensitivity to the active substance or to an excipient of the study treatments
Have severe vomiting, diarrhea, or other severe GI illness within 24 hours prior to the first dose of study treatment that would preclude administration of oral medication
Require mechanical ventilation or vasopressors for hemodynamic support at the time of Baseline
Pregnant or nursing female
Have received any investigational agent (including CMV-specific T-cells) with known anti-CMV activity within 30 days before initiation of the study treatment at any time
Have previously received maribavir
Have serum aspartate aminotransferase (AST) >5 times upper limit of normal (ULN) at Screening, or serum alanine aminotransferase (ALT) >5 times ULN at Screening, or total bilirubin >=3.0 ULN at Screening (except for documented Gilbert's syndrome), as analyzed by local or central laboratory
Have known (previously documented) positive results for HIV. Participants must have a confirmed negative HIV test result within 3 months of study entry or, if unavailable, be tested by a local laboratory during the screening period
Have active malignancy with the exception of nonmelanoma skin cancer, as determined by the investigator. Participants who experience relapse or progression of their underlying malignancy (for which HSCT or SOT was performed), as determined by the investigator, are not to be enrolled
Be undergoing treatment for acute or chronic hepatitis C
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