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SPR001

Phase 2

Congenital Adrenal Hyperplasia | Small molecule | Endocrine |Spruce Biosciences, Inc.|Last Updated: Oct 22, 2025

Success Probability
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Market & Valuation
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Trial Design
CONTROLLED
Total Trials2
Total Enrollment35
FDA Designations
No designations recorded
Clinical trial landscape

SPR001 · 2 trials · 3 indications

Phase 2 2
NCT03687242Study to Evaluate the Safety and Efficacy of SPR001 in Subjects With Classic Congenital Adrenal HyperplasiaCongenital Adrenal Hyperplasia
COMPLETED11 Analytics
NCT03257462Study of SPR001 in Adults With Classic Congenital Adrenal HyperplasiaCongenital Adrenal Hyperplasia
COMPLETED24 Analytics
PHASE2COMPLETED
Study to Evaluate the Safety and Efficacy of SPR001 in Subjects With Classic Congenital Adrenal Hyperplasia
Congenital Adrenal HyperplasiaUnlock trial analytics
PHASE2COMPLETED
Study of SPR001 in Adults With Classic Congenital Adrenal Hyperplasia
Congenital Adrenal HyperplasiaUnlock trial analytics
Study Endpoints
Primary Endpoints
The Incidence of Treatment-emergent Adverse Events (Safety and Tolerability) in Subjects With CAH
Over 12 weeks

Incidence of treatment-emergent adverse events including any serious adverse events, dose-limiting toxicities, and adverse events leading to discontinuation of study drug.

Safety of SPR001 in Patients With CAH
6 weeks

Incidence of treatment-emergent adverse events, changes from Baseline to End-of-study in clinical laboratory parameters, physical examination findings, vital signs, ECG parameters

Change in 17-hydroxyprogesterone
Cohort A: Baseline/2a (Day -1-0), First dose/2b (Day 0-1), Visit 3 (Day 13-14), Visit 4 (Day 27-28), Visit 5 (Day 41-42). Cohort B and Cohort C: Visit 2 (Day 0-1), Visit 3 (Day 8), Visit 4 (Day 14-15), Visit 5 (Last dose +30d)

Change in 17-hydroxyprogesterone from Baseline to End-of-study. Results are expressed as mean percent change from baseline. Reductions in 17-OHP are indicators of better disease control.

Secondary Endpoints
Change From Baseline in 17-hydroxyprogesterone (17-OHP)
Week 12
Change From Baseline in Androstenedione (A4)
Week 12
Change From Baseline in Adrenocorticotropic Hormone (ACTH)
Week 12
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Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
SPR001EXPERIMENTALSPR001 at Dose A
Cohort AEXPERIMENTALThe first cohort of 9 patients will be administered SPR001 at dose strength of Dose A daily for 2 weeks, and escalating through Dose B per day for 2 weeks and Dose C per day for 2 weeks.
Cohort BEXPERIMENTALCohort B will begin enrollment after Cohort A has been fully enrolled. Starting dose selection and the stepwise dosing paradigm for Cohort B will be determined by an interim review of safety and PK/PD data from from Cohort A.
Cohort CEXPERIMENTALCohort C will begin enrollment after Cohort B has been fully enrolled. Starting dose selection and the stepwise dosing paradigm for Cohort C will be determined by an interim review of safety and PK/PD data from from Cohort A and B.
Interventions
NameTypeDescription
SPR001DRUGOpen label SPR001
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Eligibility Criteria
Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites8

Inclusion Criteria: * Is approved by the Sponsor's Medical Monitor * Is on a stable regimen of glucocorticoid replacement for ≥30 days before baseline that is expected to remain stable throughout the study * If screening for this study occurs \>3 months after the subject's final follow-up visit in ...

Countries:United States
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