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Pociredir

Phase 2

Sickle Cell Disease | Small molecule | Hematology |Fulcrum Therapeutics, Inc.|Last Updated: Apr 14, 2026

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Trial Design
UNCONTROLLEDDMC
Total Trials2
Total Enrollment95
FDA Designations
FAST_TRACKORPHAN_DRUG
Clinical trial landscape

Pociredir · 2 trials · 2 indications

Phase 2 1Phase 1 1
NCT07401823Open-Label Extension Study to Pioneer Study 6058-SCD-101Sickle Cell Disease
ENROLLING BY_INVITATION50 Analytics
PHASE2ENROLLING BY_INVITATION
Open-Label Extension Study to Pioneer Study 6058-SCD-101
Sickle Cell DiseaseUnlock trial analytics
Study Endpoints
Primary Endpoints
Number of participants reporting Treatment Emergent Adverse Events (TEAEs)
Up to Week 196
Number of participants with clinically significant changes in 12-lead Electrocardiogram (ECGs)
Up to Week 196
Number of participants with clinically significant changes in Vital signs
Up to Week 196
Number of participants with clinically significant changes in Clinical laboratory tests
Up to Week 196

Laboratory assessments including hematology, coagulation, serum chemistry and electrolytes, lipid panel, SCD characterization, serology, urinalysis and pregnancy tests will be performed.

Treatment-Emergent Adverse Events
Up to approximately 16 weeks of monitoring

To evaluate the safety and tolerability of Pociredir in adult participants with sickle cell disease based on the frequency of adverse events (AEs) and changes in clinically significant laboratory test results, vital signs and electrocardiograms (ECGs) parameters.

Plasma Concentrations of Pociredir
Days 1, 14, 28, 42, 56, 70, 84 and 91

Blood samples will be collected to measure the plasma concentration of Pociredir at specified timepoints.

Secondary Endpoints
Change from Baseline in percent Fetal hemoglobin (HbF)
Baseline (Day 1), and Up to Week 192
Change from Baseline in percent Reticulocytes
Baseline (Day 1), and Up to Week 192
Change from Baseline in Red cell distribution width
Baseline (Day 1), and Up to Week 192
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Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
PociredirEXPERIMENTALParticipants will receive Pociredir orally once daily (QD)
Pociredir oral capsule(s) in Sickle Cell participantsEXPERIMENTALCohort 1 will receive 6 mg of Pociredir by mouth once daily. Cohort 2 will be dosed at 2 mg once daily by mouth, and cohort 3 will be dosed at 12 mg once daily by mouth. The Sponsor will reinitiate enrolment in the 3rd cohort (12 mg cohort) with the updated inclusion and exclusion criteria. Based on review of available safety and biomarker data and with the recommendation of the DMC, a subsequent 4th cohort of 20 mg and potentially a 5th cohort of 30 mg may be initiated. A total of seven cohorts may be included. Following the first cohort, doses for all subsequent cohorts will be determined following DMC review of the safety and pharmacokinetic data observed in participants from the prior and ongoing cohorts. Alternate dosing schedules may be evaluated in some of the cohorts.
Interventions
NameTypeDescription
PociredirDRUGPociredir Oral Capsules will be administered
Pociredir oral capsule(s)DRUGParticipants will receive Pociredir
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Eligibility Criteria
Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites8

Inclusion Criteria: * Participants aged ≥18 years and older must have previously participated in and successfully completed Study 6058-SCD-101. * Participant has signed and dated the informed consent form (ICF) before any study-specific procedures are performed and is willing and able to comply wit...

Countries:United StatesNigeriaSouth Africa
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT07401823Status: NOT_YET_RECRUITING → ENROLLING_BY_INVITATION
LOWMay 24, 2026NCT07401823studyFirstPostDate: changed