PCOS drug trial halted early: did tildacerfont lower hormones?
NCT ID NCT05370521
First seen Jun 27, 2026 ยท Last updated Jun 27, 2026
Summary
This study tested a drug called tildacerfont in 27 women with polycystic ovary syndrome (PCOS) who had high levels of adrenal androgens (hormones). The goal was to see if the drug could safely lower these hormones. The trial was stopped early, so results are limited.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
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27 people
The number who actually took part.
- Started
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May 2022
- Finished
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Aug 2023
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 40 years
- Sex
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Female participants only
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Female subjects aged 18 to 40 years old at Screening visit * Diagnosis of PCOS (either historical or during Screening) according to NIH (1990) criteria * DHEAS level \> age-matched upper limit of normal (ULN) at Screening visit * Agree to follow industry standard contraception guidelines within protocol Exclusion Criteria: * Evidence of: 1. History of congenital adrenal hyperplasia (CAH), Cushing's syndrome, pituitary or adrenal disease 2. Clinically significant hyperprolactinemia 3. Thyroid stimulating hormone (TSH) \<0.1 mU/mL or \>4.5mU/mL at Screening 4. Cortisol levels concerning for adrenal insufficiency 5. Other findings suggestive of secondary cause for anovulation and/or hyperandrogenemia * Total testosterone levels \>140 ng/dL, DHEAS \>650 mcg/dL, virilization or other signs or symptoms concerning for ovarian hyperthecosis or androgen-secreting tumors * Medical conditions that require glucocorticoid treatment within 30 days of screening and throughout the duration of the study * Clinically significant unstable medical conditions, illness, or chronic diseases * Prior hysterectomy or bilateral oophorectomy * Females who are pregnant or nursing
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Spruce Study Site
Sacramento, California, 95817, United States
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Spruce Study Site
San Francisco, California, 94158, United States
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Spruce Study Site
New Haven, Connecticut, 06519, United States
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Spruce Study Site
Clearwater, Florida, 33759, United States
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Spruce Study Site
Lake Worth, Florida, 33461, United States
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Spruce Study Site
Miami, Florida, 33173, United States
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Spruce Study Site
Winter Park, Florida, 32792, United States
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Spruce Study Site
Idaho Falls, Idaho, 83404, United States
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Spruce Study Site
Wichita, Kansas, 67226, United States
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Spruce Study Site
Boston, Massachusetts, 02115, United States
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Spruce Study Site
Fall River, Massachusetts, 02720, United States
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Spruce Study Site
Southfield, Michigan, 48034, United States
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Spruce Study Site
Williamsville, New York, 14221, United States
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Spruce Study Site
Raleigh, North Carolina, 27612, United States
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Spruce Study Site
Cincinnati, Ohio, 45219, United States
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Spruce Study Site
Cleveland, Ohio, 44106, United States
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Spruce Study Site
Philadelphia, Pennsylvania, 19104, United States
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Spruce Study Site
Bedford, Texas, 76022, United States
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Spruce Study Site
Houston, Texas, 77024, United States
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Spruce Study Site
Houston, Texas, 77030, United States
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Spruce Study Site
Morgantown, West Virginia, 26506, United States
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