Recent Updates
Recently added Catalysts

Vorapaxar

Phase 3

Atherosclerosis | Small molecule | Cardiovascular |Merck & Company, Inc.|Last Updated: Sep 21, 2018

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
Premium
Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
Premium
Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials3
Total Enrollment26,827
FDA Designations
No designations recorded
Clinical Trials (3)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT00617123Trial to Assess the Ocular Safety of Vorapaxar (SCH 530348) in Participants With Atherosclerosis (Study P05183)PHASE3 COMPLETED 258Jul 1, 2008Oct 1, 2010Sep 21, 2018 -
NCT00526474Trial to Assess the Effects of Vorapaxar (SCH 530348; MK-5348) in Preventing Heart Attack and Stroke in Patients With Atherosclerosis (TRA 2°P - TIMI 50) (P04737)PHASE3 COMPLETED 26,449Sep 1, 2007Dec 1, 2011Sep 21, 2018 -
NCT00684203Trial to Assess the Safety and Effects of Vorapaxar in Japanese Subjects With Acute Coronary Syndrome (P04772; MK-5348-016)PHASE2 COMPLETED 120Dec 1, 2006Oct 1, 2007May 5, 2017 -
Unlock Drug Trial Details
Study Endpoints
Primary Endpoints
Number of Participants Who Develop Vacuolization in the Inner Nuclear Layer (INL) of the Retina as Measured by Ocular Coherence Tomography (OCT)
Up to 12 months

Vacuolization is defined as the presence of more than one vacuole (defined as a clear, round structure in the INL of the retina of at least 30 microns in diameter) compared to baseline in either the left or right eye as evaluated by ocular coherence tomography (OCT).

Kaplan-Meier Estimate of the Percentage of Participants Who Experienced Cardiovascular (CV) Death, Myocardial Infarction (MI), Stroke, or Urgent Coronary Revascularization (UCR) Within 3 Years From Randomization
up to 3 years

The time (in days) from study start to the first occurrence of any of the following clinical outcomes was recorded: CV death, MI, stroke, or UCR. A Clinical Endpoints Committee (CEC) reviewed and adjudicated each suspected efficacy endpoint event while blinded to treatment. Participants who did not have any endpoint event until last visit or participants who were lost to follow-up and had no event were censored at the time of last available information (last study visit). If a participant had a fatal event that was not part of a specific endpoint for analysis, they were censored at the time of death. The Kaplan-Meier estimate reports the percentage of participants who experienced CV death, MI, stroke, or UCR within 3 years from randomization.

Number of Participants Experiencing Adverse Events (AEs) Who Underwent Percutaneous Coronary Interventions (PCI)
Up to Day 60

An AE is any unfavorable and unintended change in the structure, function or chemistry of the body temporally associated with study drug administration, whether or not considered related to the study drug.

Secondary Endpoints
Number of Participants Who Have a Decrease in Visual Acuity Score of at Least Seven Letters From Baseline
Baseline and 4, 8 and 12 months
Number of Participants With Change From Baseline of Center Foveal Thickness of Greater Than 15 Microns as Measured by OCT
Baseline and 4, 8 and 12 months
Change From Baseline in the Numerical Score of Graded Abnormalities as Measured by OCT
Baseline and 4, 8 and 12 months
Unlock Study Endpoints
Study Design & Arms
AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposePREVENTION
Treatment Arms
ArmTypeDescription
VorapaxarEXPERIMENTALParticipants receive a vorapaxar 2.5 mg tablet administered orally once daily for 1 year
PlaceboPLACEBO_COMPARATORParticipants receive a matching placebo tablet to vorapaxar administered orally once daily for 1 year
Vorapaxar 20 mg/1 mgEXPERIMENTALVorapaxar 20 mg loading dose + daily 1 mg maintenance dose + standard of care (Aspirin + Ticlopidine)
Vorapaxar 20 mg/2.5 mgEXPERIMENTALVorapaxar 20 mg loading dose + daily 2.5 mg maintenance dose + standard of care (Aspirin + Ticlopidine)
Vorapaxar 40 mg/1 mgEXPERIMENTALVorapaxar 40 mg loading dose + daily 1 mg maintenance dose + standard of care (Aspirin + Ticlopidine)
Vorapaxar 40 mg/2.5 mgEXPERIMENTALVorapaxar 40 mg loading dose + daily 2.5 mg maintenance dose + standard of care (Aspirin + Ticlopidine)
Interventions
NameTypeDescription
Vorapaxar 2.5 mgDRUGVorapaxar 2.5 mg oral tablet
PlaceboDRUGmatching placebo oral tablet
VorapaxarDRUG2.5-mg tablet daily for at least 1 year
AspirinDRUGLoading dose of 75-325 mg on Day 1, then 75-100 mg once daily for 60 days.
ClopidogrelDRUG100 mg two or three times daily for 60 days.
Unlock Study Design Details
Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo

Inclusion Criteria: * Evidence or a history of atherosclerosis involving the coronary, cerebral, or peripheral vascular systems Exclusion Criteria: * The study will include participants who meet none of the exclusion criteria for the parent protocol (P04737) and also the following: * history o...

Unlock Eligibility Criteria