NCT06542237

Open Label, Dose Escalation, Repeat Dose Study Evaluating YCT-529 in Healthy Males

Open Label Dose Escalation Study to Evaluate Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Repeated Daily Oral Dosing of YCT-529 for 28 Days, 90 Days or 180 Days in Healthy Men

• Status: Recruiting
• Phase: Phase 1 / Phase 2
• Study type: Interventional
• Enrollment: 88 (estimated)
• Sponsor: YourChoice Therapeutics, Inc. · Industry
• Sex: Male
• Age: 28 Years – 70 Years
• Healthy volunteers: Accepted

Summary

This is a Phase 1b/2a open-label, dose escalation 3 part-study, 28-day, 90-day or 180 day repeat dose study of YCT-529 in healthy males who have decided to have a vasectomy and are waiting for the procedure and for men who have decided not to father children in the future. The study is aimed at evaluating the safety, tolerability, pharmacokinetics, pharmacodynamics and to assess sexual function and mood.

Detailed description

This is a Phase 1b/2a, open label, 28-day, 90-day or 180-day repeat-dose escalation study of YCT-529 in healthy men to evaluate the safety, tolerability, pharmacokinetics and pharmacodynamics, and to assess sexual function and mood. The study consists of 3 parts: a 28-day Phase 1b part (Part 1), a 90-day Phase 2a part (Part 2) and a 180-day Phase 2a part (Part 3). All participants will receive YCT-529. In Part 1, 4 dosing cohorts and one optional 5th cohort with 4 participants each will be evaluated. In Part 2, up to 5 dosing cohorts and 2 optional cohorts with 4 participants each will be evaluated. Dose levels will be selected based on doses that were deemed safe and well tolerated upon 28-day administration in Part 1 and any previous Part 2 cohorts. Participants in Parts 1 and 2 may be replaced automatically if prior to any dosing. If a participant is required to be replaced post-dose, the replacement may beapproved at the discretion of Sponsor and PI with the objective of available data in at least 3 evaluable participants per cohort. In Part 3, 3 dosing cohorts and one optional 4th cohort with 10 participants each will receive doses within the range of doses that were deemed safe and well tolerated in Part 2. Participants who discontinue early may be replaced.

Conditions

• Male Contraception

Interventions

Type	Name	Description
DRUG	YCT-529	In Part 1, 4 dosing cohorts and one optional 5th cohort with 4 participants each will be evaluated. In Part 2, up to 5 dosing cohorts and 2 optional cohorts with 4 participants each will be evaluated. Dose levels will be selected based on doses that were deemed safe and well tolerated upon 28-day administration in Part 1 and any previous Part 2 cohorts. In Part 3, 3 dosing cohorts and one optional 4th cohort with 10 participants each will receive doses within the range of doses that were deemed safe and well tolerated in Part 2.

Timeline

• Start date: 2024-09-11
• Primary completion: 2026-07-31
• Completion: 2026-07-31
• First posted: 2024-08-07
• Last updated: 2026-02-13

Locations

1 site across 1 country: New Zealand