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A Study of the Effects of Erythromycin on the Pharmacokinetics of Relugolix, Estradiol, and Norethindrone in Healthy Postmenopausal Women and on the Pharmacokinetics of Relugolix in Healthy Adult Men

Healthy Clinical Trial

Official title:
A Two-Part, Open-Label, Fixed-Sequence, Two-Period Crossover Study to Assess the Effects of Erythromycin on the Pharmacokinetics of Relugolix, Estradiol, and Norethindrone After Administration of the Relugolix/Estradiol/Norethindrone Acetate Fixed-Dose Combination Tablet in Healthy Postmenopausal Women and on the Pharmacokinetics of Relugolix After Administration of a Single 120-mg Dose in Healthy Adult Men

Clinical Trial Summary

This is a two-part, open-label, fixed-sequence, two-period crossover drug interaction study to assess the potential effects of erythromycin on the pharmacokinetics of relugolix, estradiol (E2), and norethindrone (NET) in healthy postmenopausal women (Part 1) and the pharmacokinetics of relugolix in healthy adult men (Part 2).

Clinical Trial Description

Each study part consists of two sequential treatment periods (Treatment Period 1 and Treatment Period 2) in which study participants will receive study treatments in a fixed (single)-sequence, crossover manner. In Part 1 of the study, a single relugolix/E2/norethindrone acetate (NETA) (40 milligrams [mg]/1 mg/0.5 mg) fixed-dose combination (FDC) tablet will be administered alone on Day 1 of Treatment Period 1; in Treatment Period 2, erythromycin will be administered on Day 1 to Day 12 (500 mg, four times daily [QID]) with co-administration of a single FDC tablet with the morning dose of erythromycin on Day 8. In Part 2 of the study, a single 120-mg dose of relugolix will be administered alone on Day 1 of Treatment Period 1; in Treatment Period 2, erythromycin will be administered on Day 1 to Day 12 (500 mg QID) with co-administration of a single 120-mg dose of relugolix with the morning dose of erythromycin on Day 8. There will be a nine-day washout interval between administration of study drug (the FDC tablet [Part 1] or relugolix 120 mg [Part 2]) on Day 1 of Treatment Period 1 and Treatment Period 2. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT04714554
Study type Interventional
Source Myovant Sciences GmbH
Contact
Status Completed
Phase Phase 1
Start date January 6, 2021
Completion date March 29, 2021
View Details
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