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Low-dose Fostemsavir Extended Release Relative Bioavailability Study

A Two-Part Randomized Study to Evaluate the Relative Bioavailability of Temsavir Following Single Dose Administration of Fostemsavir 600 mg Tablets Compared to Two Fostemsavir 200 mg Tablet Formulations and to Evaluate the Effect of Food on Bioavailability of Selected Fostemsavir 200 mg Tablet Formulation in Healthy Adult Participants

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04757974
Enrollment
32
Registered
2021-02-17
Start date
2021-03-05
Completion date
2021-07-31
Last updated
2021-09-22

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

Conditions

HIV Infections

Keywords

Temsavir, Fostemsavir, Bioavailability, Extended Release tablet, GSK3684934, Food effect

Brief summary

This is a two-part study. Part 1 will evaluate relative bioavailability of temsavir (TMR) following single dose administration of the reference fostemsavir (FTR) compared to two low-dose ER tablet formulations of FTR. In Part 2, the effect of food on the bioavailability of TMR will be assessed on the selected low-dose ER tablet formulation from Part 1.

Interventions

DRUGFostemsavir 600 mg

Fostemsavir tablets will be administered via oral route.

DRUGFostemsavir 200 mg

Fostemsavir tablets will be administered via oral route.

Sponsors

ViiV Healthcare
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
NONE

Masking description

This is an open-label study

Intervention model description

This is a two-part study, where Part 1 will be conducted as a randomized three period, three treatment crossover study and Part 2 will have a randomized two period, two treatment crossover design.

Eligibility

Sex/Gender
ALL
Age
18 Years to 50 Years
Healthy volunteers
Yes

Inclusion criteria

* 18 to 50 years of age inclusive. * Healthy as determined by the investigator or medically qualified designee. * A participant with a clinical abnormality or laboratory parameter(s) which is/are not specifically listed in the inclusion or

Exclusion criteria

, outside the reference range for the population being studied may be included only if the investigator, in consultation with the Medical Monitor, agree and document that the finding is unlikely to introduce additional risk factors and will not interfere with the study procedures. * Body weight \>= 50 kilograms (kg) (110 pounds \[lbs.\]) for men and \>= 45 kg (99 lbs.) for women and body mass index (BMI) within the range 18.5-31.0 kilogram per meter square (kg/m\^2) (inclusive). * Male participants are eligible to participate if they agree to use contraceptive methods. * A female participant is eligible to participate if she is not pregnant or breastfeeding and one of the following conditions applies: Is a woman of non-childbearing potential (WONCBP). OR Is a woman of childbearing potential (WOCBP) and using a contraceptive method that is highly effective. * Capable of giving signed informed consent.

Design outcomes

Primary

MeasureTime frame
Part 1: Area under the plasma concentration-time curve (AUC) from time zero to the last quantifiable time point (AUC[0-t]) of temsavirPredose (Day 1) until 72 hour post dose
Part 1: AUC from time zero extrapolated to infinite time (AUC[0-infinity]) of temsavirPredose (Day 1) until 72 hour post dose
Part 1: Maximum observed plasma concentration (Cmax)Predose (Day 1) until 72 hour post dose

Secondary

MeasureTime frame
Part 1 and Part 2: Number of participants with clinically significant change from Baseline in vital signs and clinical laboratory parametersBaseline (Day -1) until end of follow up at 4 weeks
Part 1 and Part 2: Number of participants reporting adverse events (AEs) and serious adverse events (SAEs)Baseline (Day -1) until end of follow up at 4 weeks
Part 1: Time to Cmax (Tmax) of temsavirPredose (Day 1) until 72 hour post dose
Part 2: AUC [0-infinity] of temsavirPredose (Day 1) until 72 hour post dose
Part 2: Cmax of temsavirPredose (Day 1) until 72 hour post dose
Part 2: AUC [0-t] of temsavirPredose (Day 1) until 72 hour post dose
Part 1: Elimination half-life (T1/2) of temsavirPredose (Day 1) until 72 hour post dose
Part 1: Concentration at 12 hours post-dose of temsavir12 hours post-dose

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026