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A Study of MK-8527 in Healthy Lactating Female Participants (MK-8527-009)

A Clinical Study to Evaluate the Breast Milk, Plasma and Whole Blood Pharmacokinetics of MK-8527 in Healthy Lactating Female Participants

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06580587
Enrollment
12
Registered
2024-08-30
Start date
2025-04-15
Completion date
2026-03-27
Last updated
2026-02-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy, HIV Pre-exposure Prophylaxis

Brief summary

The goal of this study is to learn how MK-8527 moves through the healthy person's body over time. Researchers will measure for the amount of MK-8527 in breast milk that the baby will receive at many time points.

Interventions

Oral administration

Sponsors

Merck Sharp & Dohme LLC
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

The key inclusion criteria include but are not limited to the following: * Is at least 6 weeks postpartum at the time of administration of study intervention, following the delivery of a healthy singleton neonate * Is willing and able to express breast milk at least twice daily for at least 120 hours after enrollment * Is willing to discontinue breastfeeding from the time of administration of study intervention until at least 6 weeks following the administration of study intervention. This includes the avoidance of both directly breastfeeding and the administration of breast milk pumped during the above-specified time frame to the infant. Is willing to confirm with the site that the infant is able to bottle feed (breast milk) prior to Day 1 and that alternative nutrition (i.e., previously stored breast milk or infant formula) is available for feeding the infant through the 6-week post dose period

Exclusion criteria

The key

Design outcomes

Primary

MeasureTime frameDescription
Area Under the Concentration-Time Curve from Time 0 to 120 hours (AUC0-120hrs) After Administration of a Single Oral Dose of MK-8527 in Breast MilkPredose and at designated timepoints up to 120 hours postdoseBreast milk samples will be collected to determine the AUC0-120hrs after administration of a single oral dose of MK-8527.
Maximum Breast Milk Concentration (Cmax) After Administration of a Single Oral Dose of MK-8527Predose and at designated timepoints up to 21 days postdoseBreast milk samples will be collected to determine the Cmax after administration of a single oral dose of MK-8527.
Time to Maximum Breast Milk Concentration (Tmax) After Administration of a Single Oral Dose of MK-8527Predose and at designated timepoints up to 21 days postdoseBreast milk samples will be collected to determine the Tmax after administration of a single oral dose of MK-8527.

Secondary

MeasureTime frameDescription
Mean Concentration of MK-8527 in Breast Milk After Administration of a Single Oral DosePredose and at designated timepoints up to 120 hours postdoseBreast milk samples will be collected to determine the mean concentration of MK-8527.
Amount Excreted in Breast Milk From Time Zero to 120 Hours (Ae0-120hrs) After Administration of a Single Oral Dose of MK-8527Predose and at designated timepoints up to 120 hours postdoseBreast milk samples will be collected to determine the Ae0-120hrs after administration of a single oral dose of MK-8527.
Area Under the Concentration-Time Curve from Time 0 to 120 hours (AUC0-120hrs) After Administration of a Single Oral Dose of MK-8527 in BloodPredose and at designated timepoints up to 120 hours postdoseBlood samples will be collected to determine AUC0-120hrs after administration of a single oral dose of MK-8527.
Area Under the Concentration-Time Curve from Time 0 to Time-Infinity (AUC0-Inf) After Administration of a Single Oral Dose of MK-8527 in BloodPredose and at designated timepoints up to 21 days postdoseBlood samples will be collected to determine AUC0-inf after administration of a single oral dose of MK-8527.
Maximum Blood Concentration (Cmax) After Administration of a Single Oral Dose of MK-8527Predose and at designated timepoints up to 21 days postdoseBlood samples will be collected to determine the Cmax after administration of a single oral dose of MK-8527.
Time to Maximum Blood Concentration (Tmax) After Administration of a Single Oral Dose of MK-8527Predose and at designated timepoints up to 21 days postdoseBlood samples will be collected to determine the Tmax after administration of a single oral dose of MK-8527.
Area Under the Concentration-Time Curve from Time 0 to 120hours (AUC0-120hrs) After Administration of a Single Oral Dose of MK-8527 in PlasmaPredose and at designated timepoints up to 120 hours postdosePlasma samples will be collected to determine AUC0-120hrs after administration of a single oral dose of MK-8527.
Area Under the Concentration-Time Curve from Time 0 to Time-Infinity (AUC0-Inf) After Administration of a Single Oral Dose of MK-8527 in PlasmaPredose and at designated timepoints up to 7 days postdosePlasma samples will be collected to determine AUC0-inf.
Maximum Plasma Concentration (Cmax) After Administration of a Single Oral Dose of MK-8527Predose and at designated timepoints up to 7 days postdosePlasma samples will be collected to determine the Cmax after administration of a single oral dose of MK-8527.
Time to Maximum Plasma Concentration (Tmax) After Administration of a Single Oral Dose of MK-8527Predose and at designated timepoints up to 7 days postdosePlasma samples will be collected to determine the Tmax after administration of a single oral dose of MK-8527.
Ratio of MK-8527 in Breast Milk to Blood After Administration of a Single Dose of MK-8527At designated timepoints up to 120 hours postdoseRatio of MK-8527 in breast milk to blood will be used to estimate dose of MK-8527.
Ratio of MK-8527 in Breast Milk to Plasma After Administration of a Single Oral DoseAt designated timepoints up to 120 hours postdoseRatio of MK-8527 in breast milk to plasma will be used to estimate dose of MK-8527.

Countries

United States

Contacts

STUDY_DIRECTORMedical Director

Merck Sharp & Dohme LLC

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 28, 2026