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ALN-4285

Phase 1

Healthy Volunteers | Small molecule | Other |Alnylam Pharmaceuticals, Inc.|Last Updated: May 14, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDBiomarker
Total Trials1
Total Enrollment76
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT07295717A Study to Evaluate ALN-4285 in Adult Healthy VolunteersPHASE1 RECRUITING 76Dec 12, 2025Mar 23, 2027May 14, 20261 United Kingdom
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Study Endpoints
Primary Endpoints
Frequency of Adverse Events (AEs)
Up to Week 24
Secondary Endpoints
Concentration of ALN-4285 in Plasma
Up to Day 3
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Study Design & Arms
AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
ALN-4285EXPERIMENTALParticipants will be administered ALN-4285 subcutaneously (SC)
PlaceboPLACEBO_COMPARATORParticipants will be administered placebo SC
Interventions
NameTypeDescription
ALN-4285DRUGALN-4285 will be administered SC
PlaceboDRUGPlacebo will be administered SC
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Eligibility Criteria
Age Range18 Years — 65 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: * Has a body mass index (BMI) of ≥18.0 kg/m\^2 and ≤30 kg/m\^2 * Has 12-lead ECG within normal limits or with no clinically significant abnormalities in the opinion of the Investigator Exclusion Criteria: * Has alanine aminotransferase (ALT) or aspartate aminotransferase (AST)...

Countries:United Kingdom
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT07295717primaryCompletionDate: changed
LOWMay 24, 2026NCT07295717studyFirstPostDate: changed