A Ph2b to Evaluate Tildacerfont in the Reduction of Glucocorticoid Steroid Doses in Adult CAH
![]() |
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT04544410 |
Recruitment Status :
Recruiting
First Posted : September 10, 2020
Last Update Posted : March 7, 2023
|
- Study Details
- Tabular View
- No Results Posted
- Disclaimer
- How to Read a Study Record
Condition or disease | Intervention/treatment | Phase |
---|---|---|
Congenital Adrenal Hyperplasia | Drug: Tildacerfont/Placebo | Phase 2 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 90 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Intervention Model Description: | Subjects will be randomized in a 1:1 manner to either Tildacerfont or Placebo for 24 weeks followed by 52 weeks open label Tildacerfont |
Masking: | Triple (Participant, Care Provider, Investigator) |
Masking Description: | Double-Blind for first 24 weeks, then open label |
Primary Purpose: | Treatment |
Official Title: | A Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Efficacy and Safety of SPR001 (Tildacerfont) in Reducing Supraphysiologic Glucocorticoid Use in Adult Subjects With Classic Congenital Adrenal Hyperplasia |
Actual Study Start Date : | September 29, 2020 |
Estimated Primary Completion Date : | December 2024 |
Estimated Study Completion Date : | September 2025 |

Arm | Intervention/treatment |
---|---|
Experimental: Tildacerfont Group
Tildacerfont administered daily via oral tablet for 24 weeks at dose level 1; followed by open label tildacerfont for 52 weeks
|
Drug: Tildacerfont/Placebo
Tablet, administered daily
Other Name: SPR001 |
Placebo Comparator: Placebo
Placebo administered daily via oral tablet for 24 weeks; followed by open label tildacerfont for 52 weeks
|
Drug: Tildacerfont/Placebo
Tablet, administered daily
Other Name: SPR001 |
- Proportion of subjects who can reduce GC dose at Week 24 [ Time Frame: 24 Weeks ]Proportion of subjects with at least a 5 mg/day HCe reduction from baseline in GC dose and A4 ≤ULN at Week 24
- Percentage change in GC use in subjects with CAH [ Time Frame: 24 weeks ]Percent change from baseline in GC dose at week 24
- Change in the median cumulative HCe dose in subjects with CAH [ Time Frame: 24 Weeks ]Median total cumulative GC dose in HCe at Week 24
- Effectiveness in reducing cardiovascular risk in subjects with CAH [ Time Frame: 24 Weeks ]Proportion of subjects with improvement in at least one cardiovascular risk factor at week 24
- Effectiveness in improving HOMA-IR in subjects with CAH [ Time Frame: 24 Weeks ]Change from baseline in the HOMA-IR at Week 24
- Effect on body weight in subjects with CAH [ Time Frame: 24 weeks ]Percent change from baseline in body weight after 24 weeks of tildacerfont treatment
- Effect on body weight in subjects with CAH [ Time Frame: 52 weeks ]Percent change from baseline in body weight after 52 weeks of tildacerfont treatment

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Male and female subjects over 18 years old, inclusive
- Has a documented historical diagnosis of classic CAH due to 21-hydroxylase deficiency based on genetic mutation in CYP21A2 and/or documented elevated 17-OHP and currently treatment with HC, HC acetate, prednisone, prednisolone, methylprednisolone (or a combination of the aforementioned GCs)
- Has been on a stable, supraphysiologic dose of GC replacement for ≥1 month before screening.
- For subjects with the salt-wasting form of CAH, subject has been on a stable dose of mineralocorticoid replacement for ≥1 month before screening
Exclusion Criteria:
- Has a known or suspected diagnosis of any other known form of classic CAH (not due to 21-hydroxylase deficiency)
- Has a history that includes bilateral adrenalectomy or hypopituitarism
- Has a history of allergy or hypersensitivity to tildacerfont, any of its excipients, or any other CRF1 receptor antagonist
- Shows clinical signs or symptoms of adrenal insufficiency

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04544410
Contact: Clinical Trials | 415-655-4169 | CAHmelia@sprucebiosciences.com |

Principal Investigator: | Ron Newfield, M.D | Rady Children's Hospital-San Diego and Professor of clinical pediatrics at UC San Diego School of Medicine. |
Responsible Party: | Spruce Biosciences |
ClinicalTrials.gov Identifier: | NCT04544410 |
Other Study ID Numbers: |
SPR001-204 CAHmelia 204 ( Other Identifier: Spruce Biosciences ) |
First Posted: | September 10, 2020 Key Record Dates |
Last Update Posted: | March 7, 2023 |
Last Verified: | March 2023 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
CAH Adrenal Disorder Congenital Adrenal Hyperplasia |
Adrenal Hyperplasia, Congenital Adrenogenital Syndrome Adrenocortical Hyperfunction Hyperplasia Pathologic Processes Disorders of Sex Development Urogenital Abnormalities Congenital Abnormalities |
Genetic Diseases, Inborn Steroid Metabolism, Inborn Errors Metabolism, Inborn Errors Metabolic Diseases Adrenal Gland Diseases Endocrine System Diseases Gonadal Disorders |