New drug shows promise for rare hormone disorder
NCT ID NCT03257462
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This phase 2 trial tested a new drug called SPR001 in 24 adults with classic congenital adrenal hyperplasia (CAH), a genetic condition that disrupts hormone production. The study aimed to see if SPR001 is safe and can improve hormone control. Participants took multiple doses of the drug, and researchers measured changes in key hormones like 17-hydroxyprogesterone. The results could point toward a better way to manage this lifelong condition.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- SPR001 capsules
- What this could lead to
- If successful, SPR001 could offer a new way to better control hormone levels in people with classic congenital adrenal hyperplasia, potentially reducing symptoms and the need for high-dose steroids.
- What could go wrong
- This is a small, early-phase trial with only 24 participants. The drug may not show enough benefit or could have side effects. More research is needed before it could become a treatment.
This is an AI summary of the original study and may miss details. Read our disclaimer.
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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24 people
The number who actually took part.
- Started
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Jul 2017
- Finished
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Mar 2019
- Lead sponsor
-
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 years and older
- Sex
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Anyone
- 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: * Male and female patients age 18 or older. * Documented diagnosis of classic CAH due to 21-hydroxylase deficiency * Elevated 17-OHP at screening * On a stable glucocorticoid replacement regimen for a minimum of 30 days Exclusion Criteria: * Clinically significant unstable medical condition, illness, or chronic disease * Clinically significant psychiatric disorder. * Clinically significant abnormal laboratory finding or assessment * History of bilateral adrenalectomy or hypopituitarism * Pregnant or nursing females * Use of any other investigational drug within 30 days * Unable to understand and comply with the study procedures, understand the risks, and/or unwilling to provide written informed consent.
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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 Biosciences Clinical Site
Orange, California, 92123, United States
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Spruce Biosciences Clinical Site
San Diego, California, 92123, United States
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Spruce Biosciences Clinical Site
Melbourne, Florida, 32935, United States
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Spruce Biosciences Clinical Site
Atlanta, Georgia, 30046, United States
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Spruce Biosciences Clinical Site
Indianapolis, Indiana, 46202, United States
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Spruce Biosciences Clinical Site
Ann Arbor, Michigan, 48109, United States
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Spruce Biosciences Clinical Site
Minneapolis, Minnesota, 55414, United States
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Spruce Biosciences Clinical Site
Las Vegas, Nevada, 89148, United States
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Spruce Biosciences Clinical Site
Philadelphia, Pennsylvania, 19104, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can a Timed-Release hydrocortisone pill match the Body's overnight hormone rhythm?
- Can a modified hydrocortisone mimic the Body's natural cortisol rhythm?
- Can a Twice-Daily hormone pill match standard care for CAH?
- Could a simple saliva test replace blood draws for hormone monitoring?
- New program aims to smooth healthcare transition for teens with rare hormone disorder
- New cortisol timing therapy may improve life for adults with rare hormone disorder