Recent Updates
Recently added Catalysts

DISC-3405

Phase 2

Polycythemia Vera (PV) | Small molecule | Hematology |Disc Medicine, Inc.|Last Updated: Aug 19, 2026

Target and mechanism

Molecular targetTMPRSS6
ModalitySmall molecule

Success Probability

Subscribe to view

Market & Valuation

Subscribe to view

Trial Design

UNCONTROLLED
Total Trials1
Total Enrollment60

FDA Designations

ORPHAN_DRUG

Clinical trial landscape

DISC-3405 · 3 trials · 3 indications

Phase 2 1Phase 1 2
NCT06985147A Phase 2, Open-Label Study of DISC-3405 in Participants With Polycythemia Vera (PV)Polycythemia Vera (PV)
ACTIVE NOT_RECRUITING60 Analytics
PHASE2ACTIVE NOT_RECRUITING
A Phase 2, Open-Label Study of DISC-3405 in Participants With Polycythemia Vera (PV)
Polycythemia Vera (PV)Unlock trial analytics

Study Endpoints

Primary Endpoints

Number of participants with treatment-related adverse events as assessed by CTCAE
Up to 365 days

Proportion of participants with treatment-emergent adverse events

Incidence of clinically abnormal vital signs
Up to 365 days

Proportion of participants with changes in vital signs

Incidence of clinically abnormal physical exam
Up to 365 days

Proportion of participants with changes in physical examinations

Incidence of clinically abnormal electrocardiograms
Up to 365 days

Proportion of participants with changes in electrocardiograms (ECGs)

Incidence of abnormal laboratory test results
Up to 365 days

Proportion of participants with changes in clinical laboratory results

Safety and tolerability of DISC-3405 administration in participants with SCD
Up to 36 weeks

Proportion of participants with treatment-emergent adverse events (TEAEs), changes in vital signs, changes in physical examinations, changes in electrocardiograms (ECGs), and changes in clinical laboratory results

Incidence of adverse events
up to 99 days
Incidence of treatment-emergent clinically abnormal physical exam
up to 99 days
Incidence of treatment-emergent clinically significant laboratory test results
up to 99 days
Incidence of treatment-emergent clinically significant electrocardiograms (ECGs)
up to 99 days
Incidence of treatment-emergent clinically abnormal vital signs
up to 99 days

Secondary Endpoints

Proportion of participants achieving therapeutic response, defined as absence of phlebotomy eligibility, during the maintenance period
Up to 365 days
Number of phlebotomies during the maintenance and optimization periods
Up to 365 days
Proportion of participants achieving therapeutic response, defined as absence of phlebotomy eligibility, during the optimization period
Up to 365 days
Unlock Study Endpoints

Study Design & Arms

AllocationNA
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Within-participant dose escalationEXPERIMENTALThis is an open-label, multicenter, within-participant dose escalation study examining up to 2 dose levels of DISC-3405.
Single Ascending Dose of DISC-3405EXPERIMENTAL -
Single Ascending Dose of PlaceboPLACEBO_COMPARATOR -
Multiple Ascending Dose of DISC-3405EXPERIMENTAL -
Multiple Ascending Dose of PlaceboPLACEBO_COMPARATOR -

Interventions

NameTypeDescription
DISC-3405DRUGDISC-3405 is administered subcutaneously.
PlaceboDRUGPlacebo is administered as a single dose IV infusion or subcutaneous injection
Unlock Study Design Details

Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites15

Inclusion Criteria: 1. Aged 18 years or older at the time of signing the informed consent form (ICF). 2. Meet revised 2022 World Health Organization (WHO) criteria for the diagnosis of PV. 3. Complete blood count values at Screening of HCT \<45% or HCT \<48% if followed by a phlebotomy within 2 wee...

Countries:United States
Unlock Eligibility Criteria

Competitive Landscape -Polycythemia Vera 11 trials (matched to "Polycythemia Vera (PV)")

Recent Changes (Last 90 Days)

LOWAug 20, 2026NCT07187973lastUpdatePostDate: changed
LOWAug 20, 2026NCT07187973lastUpdatePostDate: changed
LOWAug 20, 2026NCT07187973lastUpdatePostDate: changed
LOWAug 20, 2026NCT07187973lastUpdatePostDate: changed
MEDIUMJul 31, 2026NCT06985147Status: RECRUITING → ACTIVE_NOT_RECRUITING
MEDIUMJul 31, 2026NCT06985147Status: RECRUITING → ACTIVE_NOT_RECRUITING
LOWJul 30, 2026NCT07187973lastUpdatePostDate: changed
LOWJul 30, 2026NCT07187973lastUpdatePostDate: changed

Frequently asked questions about DISC-3405

What is DISC-3405 used for?

DISC-3405 is an investigational small molecule being studied for Polycythemia Vera (PV) and Sickle Cell Disease (SCD). It is developed by Disc Medicine, Inc. (NASDAQ: IRON). The drug is also being evaluated in healthy volunteers to assess its safety and pharmacokinetics.

Who makes DISC-3405?

DISC-3405 is developed by Disc Medicine, Inc., a biopharmaceutical company trading on NASDAQ under the ticker IRON. The company is conducting clinical trials of DISC-3405 in the United States across multiple indications.

What phase is DISC-3405 in?

DISC-3405 is in Phase 1 clinical development for Sickle Cell Disease and has completed a Phase 1 study in healthy volunteers. A Phase 2 study in Polycythemia Vera is active but not recruiting. The drug has received Orphan Drug designation from the FDA.

What clinical trials is DISC-3405 in?

DISC-3405 is being studied in three clinical trials: NCT06050915, a completed Phase 1 study in 64 healthy volunteers; NCT06985147, an active Phase 2 open-label study in 60 participants with Polycythemia Vera; and NCT07187973, a recruiting Phase 1b open-label study in 24 participants with Sickle Cell Disease.

Is DISC-3405 FDA approved?

DISC-3405 is not FDA approved. It is an investigational drug currently in clinical development. The FDA has granted Orphan Drug designation for DISC-3405, which provides certain development incentives, but the drug remains investigational and has not received marketing approval.