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ARO-DIMERPA

Phase 1

Hyperlipidemia; Mixed | Small molecule | Cardiovascular |Arrowhead Pharmaceuticals, Inc.|Trials Updated: Oct 13, 2026

ARO-DIMERPA development status

Highest phase Phase 1
Registered trials 1 across 1 sponsor since Nov 2025

ARO-DIMERPA target and mechanism

Molecular targetPCSK9/APOC3
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment78

FDA Designations

No designations recorded

ARO-DIMERPA clinical trials

ARO-DIMERPA · 1 trial · 1 indication

Phase 1 1
NCT07223658Study of ARO-DIMERPA in Adult Participants With Mixed HyperlipidemiaHyperlipidemia; Mixed
RECRUITING78 Analytics
PHASE1RECRUITING
Study of ARO-DIMERPA in Adult Participants With Mixed Hyperlipidemia
Hyperlipidemia; MixedUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of Participants with Treatment-Emergent Adverse Events (TEAEs)
Up to Week 36

Secondary Endpoints

Percent Change from Baseline in Fasting LDL-C
Baseline to Week 36
Percent Change from Baseline in Fasting TGs
Baseline to Week 36
Percent Change from Baseline in Serum apoC-III
Baseline to Week 36
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
ARO-DIMERPAEXPERIMENTALARO-DIMERPA in single or multiple ascending doses
PlaceboPLACEBO_COMPARATORPlacebo (normal saline, 0.9%) in single or multiple matching doses

Interventions

NameTypeDescription
ARO-DIMERPADRUGSubcutaneous (SC) injection
PlaceboDRUGCalculated volume to match active treatment by SC injection
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites19

Inclusion Criteria: * Willing to follow diet counseling as per Investigator judgment based on local standard of care * Specific fasting TG, LDL-C, and non-high density lipoprotein cholesterol levels at Screening * Participants of childbearing potential must agree to use highly effective contracepti...

Countries:AustraliaCanadaGeorgiaMoldovaNew Zealand
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Recent Changes (Last 90 Days)

MEDIUMOct 13, 2026NCT07223658primaryCompletionDate: changed
MEDIUMOct 13, 2026NCT07223658primaryCompletionDate: changed
LOWAug 19, 2026NCT07223658lastUpdatePostDate: changed
LOWAug 19, 2026NCT07223658lastUpdatePostDate: changed
LOWAug 19, 2026NCT07223658lastUpdatePostDate: changed

Frequently asked questions about ARO-DIMERPA

What is ARO-DIMERPA?

ARO-DIMERPA is an investigational small molecule being developed by Arrowhead Pharmaceuticals, Inc. for the treatment of mixed hyperlipidemia, a condition marked by elevated lipids in the blood. It is currently in Phase 1 clinical development and has not been approved by the FDA.

What does ARO-DIMERPA target?

ARO-DIMERPA targets PCSK9 and APOC3, two proteins involved in lipid metabolism. By acting on both targets, the drug is designed to lower circulating lipids in patients with mixed hyperlipidemia. It is a small molecule modality in development by Arrowhead Pharmaceuticals.

Who makes ARO-DIMERPA?

ARO-DIMERPA is being developed by Arrowhead Pharmaceuticals, Inc., which trades on the Nasdaq under the ticker ARWR. Arrowhead is the sponsor of the clinical program evaluating the drug in adults with mixed hyperlipidemia.

What phase is ARO-DIMERPA in?

ARO-DIMERPA is in Phase 1 clinical development. It is investigational and has not received FDA approval. The program currently has one active, recruiting trial, with no completed trials to date.

What clinical trials is ARO-DIMERPA in?

ARO-DIMERPA is being studied in one Phase 1 trial, NCT07223658, titled Study of ARO-DIMERPA in Adult Participants With Mixed Hyperlipidemia. The trial is recruiting, is randomized, double-blind, and placebo-controlled, and plans to enroll 78 participants across Australia, Canada, Georgia, Moldova, and New Zealand.

Who can enroll in the ARO-DIMERPA trial?

The Phase 1 trial NCT07223658 enrolls adults 18 years of age and older of any sex with mixed hyperlipidemia. It does not accept healthy volunteers. The study is randomized, double-blind, and placebo-controlled, with a planned enrollment of 78 participants.