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YCT-529 Advances to Extended Human Trials After Clearing Initial Safety Test

Researchers are evaluating 28-day dosing alongside a 90-day regimen en route to larger efficacy trials

© Cagkan Sayin via Shutterstock
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Overview

  • YCT-529 is the first oral non-hormonal male contraceptive that targets retinoic acid receptor alpha to halt sperm production without affecting testosterone or libido
  • Phase I single-dose study in 16 vasectomized men showed no serious adverse events, stable hormone levels and blood exposure matching effective animal doses
  • Preclinical trials in mice and nonhuman primates demonstrated 99% efficacy in preventing pregnancy with full fertility restoration after discontinuation
  • Ongoing repeat-dose trials are assessing daily administration for 28 days and 90 days to monitor sustained safety and impact on sperm parameters
  • YourChoice Therapeutics is preparing larger Phase II studies to determine optimal dosing regimens and move toward market approval