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Pociredir

Phase 2

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

Pociredir development status

Highest phase Phase 2
Registered trials 2 across 1 sponsor since Feb 2026

Pociredir target and mechanism

Molecular targetEED
ModalitySmall molecule

Also known as Pociredir oral capsule(s), FTX-6058

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDDMC
Total Trials2
Total Enrollment95

FDA Designations

FAST_TRACKORPHAN_DRUG

Pociredir clinical trials

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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Frequently asked questions about Pociredir

What is Pociredir used for?

Pociredir is an investigational oral small molecule being developed for the treatment of sickle cell disease. It is currently in Phase 2 clinical development and has not been approved by the FDA. Fulcrum Therapeutics is evaluating it in adults 18 years and older with sickle cell disease.

What does Pociredir target?

Pociredir targets EED, the embryonic ectoderm development protein, which is a component of the polycomb repressive complex 2. By binding EED, the small molecule is designed to modulate PRC2 activity and induce fetal hemoglobin production, a mechanism relevant to sickle cell disease.

Who makes Pociredir?

Pociredir is being developed by Fulcrum Therapeutics, Inc., which trades on the Nasdaq under the ticker FULC. Fulcrum is a clinical-stage biopharmaceutical company focused on small molecule therapies, and Pociredir is its oral EED-targeting candidate for sickle cell disease.

What phase is Pociredir in?

Pociredir is in Phase 2 clinical development for sickle cell disease. It is investigational and has not received FDA approval. The FDA has granted Pociredir Fast Track and Orphan Drug designations, which are intended to support and expedite development of therapies for serious conditions.

What clinical trials is Pociredir in?

Pociredir has been studied in two clinical trials. NCT05169580 was a completed Phase 1 study of safety, tolerability, pharmacokinetics and pharmacodynamics in sickle cell disease, enrolling 45 adults across the United States, Nigeria and South Africa. NCT07401823 is an ongoing Phase 2 open-label extension study enrolling about 50 adults in the United States.

Is Pociredir the same as Pociredir oral capsule(s)?

Yes. Pociredir oral capsule(s) refers to the same investigational drug as Pociredir, the oral small molecule EED-targeting candidate developed by Fulcrum Therapeutics for sickle cell disease. The capsule description simply identifies the oral dosage form used in its clinical trials.