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Olpasiran

Phase 3

Atherosclerotic Cardiovascular Disease | Small molecule | Cardiovascular |Amgen Inc.|Last Updated: Aug 21, 2026

Target and mechanism

Molecular targetLPA
Target classRnai Inhibitor
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment7,297

FDA Designations

No designations recorded

Clinical trial landscape

Olpasiran · 8 trials · 6 indications

Phase 3 3Phase 2 1Phase 1 4
NCT07293260Olpasiran Trials of Cardiovascular Events and Lipoprotein(a) Reduction - Coronary Computed Tomography Angiography TrialCardiovascular Disease
RECRUITING406 Analytics
NCT07136012OCEAN(a)-PreEvent - Olpasiran Trials of Cardiovascular Events And LipoproteiN(a) Reduction to Prevent First Major Cardiovascular EventsCardiovascular Disease
RECRUITING11,000 Analytics
NCT05581303Olpasiran Trials of Cardiovascular Events and Lipoprotein(a) Reduction (OCEAN(a)) - Outcomes TrialAtherosclerotic Cardiovascular Disease
ACTIVE NOT_RECRUITING7,297 Analytics
PHASE3RECRUITING
Olpasiran Trials of Cardiovascular Events and Lipoprotein(a) Reduction - Coronary Computed Tomography Angiography Trial
Cardiovascular DiseaseUnlock trial analytics
PHASE3RECRUITING
OCEAN(a)-PreEvent - Olpasiran Trials of Cardiovascular Events And LipoproteiN(a) Reduction to Prevent First Major Cardiovascular Events
Cardiovascular DiseaseUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
Olpasiran Trials of Cardiovascular Events and Lipoprotein(a) Reduction (OCEAN(a)) - Outcomes Trial
Atherosclerotic Cardiovascular DiseaseUnlock trial analytics

Study Endpoints

Primary Endpoints

Change in NCP Volume from Baseline to Week 72
Baseline to Week 72
Time to CHD Death, Myocardial Infarction, or Urgent Coronary Revascularization, Whichever Occurs First
Up to approximately 6.2 years
Percentage Change From Baseline in Lipoprotein(a) (Lp[a]) at Week 36
Baseline and Week 36

Least squares mean is from the repeated measures linear effects model which includes treatment group, stratification factors, scheduled visit and the interaction of treatment group with scheduled visit.

Placebo-corrected Change From Baseline in QT Corrected for Heart Rate (HR) Interval Based on the Fridericia Correction (QTcF) (ΔΔQTcF) After Olpasiran Dosing
Day 3 of Treatment Period 4 (up to approximately 9.5 weeks)
Maximum Observed Serum Concentration (Cmax) of Olpasiran
Predose, 0.5, 1, 3, 6, 9, 12, 24, 36, 48, 72, 96, 144 hours (postdose), Day 15, and Day 29
Area Under the Plasma Concentration-time Curve from Time Zero to the Last Quantifiable Concentration (AUClast) of Olpasiran
Predose, 0.5, 1, 3, 6, 9, 12, 24, 36, 48, 72, 96, 144 hours (postdose), Day 15, and Day 29
Area Under the Plasma Concentration-time Curve from Time Zero to Infinity (AUCinf) of Olpasiran
Predose, 0.5, 1, 3, 6, 9, 12, 24, 36, 48, 72, 96, 144 hours (postdose), Day 15, and Day 29
Dialysis Clearance of Drug From Plasma (CLD) of Olpasiran
Pre-Dialysis, 0.5, 1, 3 hours after the start of Dialysis, and immediately following the end of Dialysis, Day 1, Day 4
Maximum Observed Concentration (Cmax) of Olpasiran
Predose, 30 and 60 minutes, 2, 3, 6, 9, 12, 24, and 36 hours postdose on Day 1 and on study Days 3, 4, 7, 15, 29, 57, and 85

The serum pharmacokinetic (PK) parameters of olpasiran were calculated using standard noncompartmental methods.

Secondary Endpoints

Change in Low Attenuation Plaque Volume from Baseline to Week 72
Baseline to Week 72
Change in Total Plaque Volume from Baseline to Week 72
Baseline to Week 72
Change in Calcified Plaque Volume from Baseline to Week 72
Baseline to Week 72
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
OlpasiranEXPERIMENTALParticipants will receive olpasiran subcutaneously (SC) once every 12 weeks (Q12W).
PlaceboPLACEBO_COMPARATORParticipants will receive placebo SC Q12W.
Arm 1 Olpasiran Dose 1ACTIVE_COMPARATOR -
Arm 2 Olpasiran Dose 2ACTIVE_COMPARATOR -
Arm 3 Olpasiran Dose 3ACTIVE_COMPARATOR -
Arm 4 Olpasiran Dose 4ACTIVE_COMPARATOR -
Arm 5 Placebo Dose 5PLACEBO_COMPARATOR -
Treatment APLACEBO_COMPARATORAll participants will be randomized to 1 of 12 treatment sequences and receive a single dose of one of the following treatments, according to the randomization schedule: Treatment A: placebo Treatment B: dose level 1 olpasiran Treatment C: dose level 2 olpasiran Treatment D: moxifloxacin
Treatment BEXPERIMENTALAll participants will be randomized to 1 of 12 treatment sequences and receive a single dose of one of the following treatments, according to the randomization schedule: Treatment A: placebo Treatment B: dose level 1 olpasiran Treatment C: dose level 2 olpasiran Treatment D: moxifloxacin
Treatment CEXPERIMENTALAll participants will be randomized to 1 of 12 treatment sequences and receive a single dose of one of the following treatments, according to the randomization schedule: Treatment A: placebo Treatment B: dose level 1 olpasiran Treatment C: dose level 2 olpasiran Treatment D: moxifloxacin
Treatment DACTIVE_COMPARATORAll participants will be randomized to 1 of 12 treatment sequences and receive a single dose of one of the following treatments, according to the randomization schedule: Treatment A: placebo Treatment B: dose level 1 olpasiran Treatment C: dose level 2 olpasiran Treatment D: moxifloxacin
Single Dose Olpasiran Hepatic ImpairmentEXPERIMENTALParticipants will be enrolled in 1 of 3 hepatic impairment groups based on their hepatic impairment status, as determined by Child-Pugh classification. All participants will receive a single dose of olpasiran on Day 1.
Single Dose Olpasiran Normal Hepatic FunctionEXPERIMENTALParticipants with normal hepatic function will be enrolled and will receive a single dose of olpasiran on Day 1.
Single Dose Olpasiran Renal ImpairmentEXPERIMENTALParticipants will be enrolled in 1 of 5 renal function groups based on their renal impairment status, as determined by estimated glomerular filtration rate (eGFR). All participants will receive a single dose of olpasiran on Day 1.
Single Dose Olpasiran Normal Renal FunctionEXPERIMENTALParticipants with normal renal function will be enrolled and will receive a single dose of olpasiran on Day 1.
Olpasiran Dose AEXPERIMENTALParticipants will be administered Olpasiran dose A as a subcutaneous injection.
Olpasiran Dose BEXPERIMENTALParticipants will be administered Olpasiran dose B as a subcutaneous injection.

Interventions

NameTypeDescription
OlpasiranDRUGOlpasiran will be administered SC.
PlaceboDRUGPlacebo will be administered SC.
MoxifloxacinDRUGParticipants will receive a single dose of moxifloxacin as an oral tablet by mouth.
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Eligibility Criteria

Age Range35 Years to 80 Years
SexALL
Healthy VolunteersNo
Study Sites40

Inclusion Criteria: * Age 35 to ≤ 80 years. * Lp(a) ≥ 200 nmol/L during screening. * Angiographic evidence of coronary artery disease in at least one major epicardial vessel on screening CCTA. * History of myocardial infarction (presumed type 1 event due to plaque rupture/erosion) and/or coronary r...

Countries:United StatesAustraliaCanadaChinaDenmarkFranceGermanyItalyJapanNetherlandsSpainArgentinaAustriaBelgiumBrazilBulgariaCzechiaEstoniaFinlandGreeceHong KongHungaryIcelandLithuaniaMexicoNorwayPolandPortugalRomaniaSlovakiaSouth KoreaSwedenTaiwanUnited Kingdom
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Recent Changes (Last 90 Days)

LOWAug 21, 2026NCT07136012lastUpdatePostDate: changed
LOWAug 21, 2026NCT07136012lastUpdatePostDate: changed
LOWAug 14, 2026NCT07136012lastUpdatePostDate: changed
LOWAug 14, 2026NCT07136012lastUpdatePostDate: changed
LOWAug 14, 2026NCT07136012lastUpdatePostDate: changed
LOWAug 7, 2026NCT07136012lastUpdatePostDate: changed
LOWAug 7, 2026NCT07136012lastUpdatePostDate: changed
LOWJul 10, 2026NCT07136012lastUpdatePostDate: changed
LOWJul 10, 2026NCT07136012lastUpdatePostDate: changed
LOWJun 25, 2026NCT07136012lastUpdatePostDate: changed
LOWJun 25, 2026NCT07136012lastUpdatePostDate: changed
LOWJun 25, 2026NCT07136012lastUpdatePostDate: changed
LOWJun 18, 2026NCT07136012lastUpdatePostDate: changed
LOWJun 18, 2026NCT07136012lastUpdatePostDate: changed
LOWJun 18, 2026NCT07136012lastUpdatePostDate: changed

Frequently asked questions about Olpasiran

What is Olpasiran used for?

Olpasiran is an investigational small molecule siRNA being developed for cardiovascular disease, specifically for conditions related to elevated serum lipoprotein(a) and atherosclerotic cardiovascular disease. It is also being studied in patients with hepatic or renal impairment to understand how the body processes the drug.

What does Olpasiran target?

Olpasiran is a small interfering RNA (siRNA) that targets the production of lipoprotein(a), a risk factor for cardiovascular disease. By reducing elevated serum lipoprotein(a) levels, it aims to address atherosclerotic cardiovascular disease. The drug is designed to lower this specific lipid particle.

Who is developing Olpasiran?

Olpasiran is being developed by Amgen Inc., a biopharmaceutical company traded on NASDAQ under the ticker symbol AMGN. Amgen is conducting clinical trials to evaluate the drug's safety and efficacy in patients with elevated lipoprotein(a) and cardiovascular conditions.

What phase is Olpasiran in?

Olpasiran is currently in Phase 3 clinical development. The most advanced trial, OCEAN(a) Outcomes Trial (NCT05581303), is active but not recruiting and is evaluating the drug's effect on cardiovascular events in patients with atherosclerotic cardiovascular disease.

What clinical trials is Olpasiran in?

Olpasiran has been studied in four clinical trials. The Phase 3 OCEAN(a) Outcomes Trial (NCT05581303) is active with 7,297 participants. Completed Phase 1 trials include NCT04987320 in Chinese participants with elevated lipoprotein(a), NCT05481411 in hepatic impairment, and NCT06411860 assessing QT/QTc intervals in healthy participants.

Is Olpasiran FDA approved?

Olpasiran is not FDA approved. It is an investigational drug currently in Phase 3 clinical trials. The drug has not yet completed the regulatory approval process, and its safety and efficacy are still being evaluated in clinical studies.