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ALN-4915

Phase 1

Undisclosed | Small molecule | Other |Alnylam Pharmaceuticals, Inc.|Trials Updated: Oct 15, 2026

ALN-4915 development status

Highest phase Phase 1
Registered trials 1 across 1 sponsor since Apr 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment36

FDA Designations

No designations recorded

ALN-4915 clinical trials

ALN-4915 · 1 trial · 1 indication

Phase 1 1
NCT07535606A Study to Evaluate ALN-4915 in Adult Healthy VolunteersHealthy Volunteers
ACTIVE NOT_RECRUITING36 Analytics
PHASE1ACTIVE NOT_RECRUITING
A Study to Evaluate ALN-4915 in Adult Healthy Volunteers
Healthy VolunteersUnlock trial analytics

Study Endpoints

Primary Endpoints

Frequency of Adverse Events
Serious adverse events (SAEs) after signing of ICF up to Month 12; nonserious AEs after first dose of study drug up to Month 12

Secondary Endpoints

Change from Baseline Inflammatory Markers in Plasma
Baseline up to Month 9
Concentration of ALN-4915 in Plasma
Predose up to Day 3
Concentration of ALN-4915 in Urine
Predose up to Day 1
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
ALN-4915EXPERIMENTALParticipants will be administered a single dose of ALN-4195.
PlaceboPLACEBO_COMPARATORParticipants will be administered a single dose of placebo.

Interventions

NameTypeDescription
ALN-4915DRUGALN-4915 will be administered subcutaneously (SC)
PlaceboDRUGPlacebo will be administered SC
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Eligibility Criteria

Age Range18 Years to 65 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: * Is willing and able to complete all study assessments Exclusion Criteria: * Has alanine aminotransferase (ALT) or aspartate aminotransferase (AST) \>upper limit of normal (ULN) * Has total bilirubin \>ULN * Has no history of invasive infection by an encapsulated organism * H...

Countries:United Kingdom
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Recent Changes (Last 90 Days)

MEDIUMOct 15, 2026NCT07535606Status: RECRUITING → ACTIVE_NOT_RECRUITING
MEDIUMOct 15, 2026NCT07535606Status: RECRUITING → ACTIVE_NOT_RECRUITING
LOWSep 16, 2026NCT07535606lastUpdatePostDate: changed
LOWSep 16, 2026NCT07535606lastUpdatePostDate: changed
LOWAug 12, 2026NCT07535606lastUpdatePostDate: changed
LOWAug 12, 2026NCT07535606lastUpdatePostDate: changed
LOWJul 24, 2026NCT07535606lastUpdatePostDate: changed
LOWJul 24, 2026NCT07535606lastUpdatePostDate: changed

Frequently asked questions about ALN-4915

What is ALN-4915?

ALN-4915 is an investigational small molecule developed by Alnylam Pharmaceuticals, Inc. It is in Phase 1 clinical development and is being studied in adult healthy volunteers. The specific disease indications it is intended to treat have not been disclosed.

Who makes ALN-4915?

ALN-4915 is being developed by Alnylam Pharmaceuticals, Inc., which trades on Nasdaq under the ticker ALNY. Alnylam is the sponsor of the Phase 1 study evaluating the compound in adult healthy volunteers.

What phase is ALN-4915 in?

ALN-4915 is in Phase 1 clinical development. It is investigational and is being evaluated in a single active study in adult healthy volunteers. No completed trials of ALN-4915 have been recorded.

What clinical trials is ALN-4915 in?

ALN-4915 is being studied in trial NCT07535606, titled A Study to Evaluate ALN-4915 in Adult Healthy Volunteers. The Phase 1 trial is active but not recruiting, is placebo-controlled and double-blind, and is expected to enroll 36 participants in the United Kingdom.

What is the design of the ALN-4915 Phase 1 trial?

The Phase 1 study of ALN-4915, NCT07535606, is a randomized, double-blind, placebo-controlled trial in adult healthy volunteers aged 18 years and older of all sexes. It is being conducted in the United Kingdom, has a planned enrollment of 36 participants, and is currently active but not recruiting.