Cytomegalovirus Prophylaxis
Conditions
Brief summary
Researchers are looking for a way to prevent cytomegalovirus (CMV) in children and adolescents who receive a kidney transplant (KT) and weigh less than 40 kilograms (88.2 pounds). The goals of the study are to: * Learn what happens to letermovir in the body over time * Learn about the safety of letermovir and if participants tolerate it
Interventions
DRUGLetermovir
Administered orally (as tablets/pellets) or via gastrostomy or nasogastric tube (as pellets) for 7 consecutive days.
Sponsors
Merck Sharp & Dohme LLC
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
No minimum to 17 Years
Healthy volunteers
No
Inclusion criteria
The main inclusion criteria include but are not limited to the following: * Is a recipient of a primary or secondary allograft kidney * Is at least 4 weeks posttransplant and not more than 52 weeks posttransplant at the time of enrollment (Day 1) and is being managed per local standard of care * Has stable kidney function posttransplant * Has undetectable CMV deoxyribonucleic acid (DNA) from a plasma or whole blood sample collected within 14 days prior to enrollment * Must be able to take (as assessed by the investigator) letermovir tablets or oral pellets by mouth, or via gastrostomy or nasogastric tube (oral pellets only) * Does not have a condition that may interfere with the absorption of oral medication (e.g., vomiting, diarrhea, or a malabsorptive condition) from the day of enrollment (Day 1) until the intensive pharmacokinetics (IPK) sampling is completed * Weighs ≥2.5 and \<40 kg at enrollment (Day 1)
Exclusion criteria
The main
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Area Under the Curve From Time 0 to 24 Hours (AUC0-24) | Day 7: Predose and at designated timepoints post-dose (up to 24 hours) | Blood samples will be collected at multiple time points to estimate AUC0-24 |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Percentage of Participants Who Experience an Adverse Event (AE) | Up to 21 days | An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a study intervention. The percentage of participants who experienced an AE is reported. |
| Percentage of Participants Who Discontinue Study Intervention Due to an AE | Up to 7 days | An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a study intervention. The percentage of participants who discontinued study treatment due to an AE is reported. |
Countries
United States
Contacts
CONTACTToll Free Number
STUDY_DIRECTORMedical Director
Merck Sharp & Dohme LLC
Outcome results
None listed