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AL002

Phase 2

Alzheimer Disease | Small molecule | Neurology |Alector, Inc.|Last Updated: Oct 29, 2025

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_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment356
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT04592874A Phase 2 Study to Evaluate Efficacy and Safety of AL002 in Participants With Early Alzheimer's DiseasePHASE2 COMPLETED 356Jan 22, 2021Sep 12, 2024Oct 29, 202587 United States, Argentina +10
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Study Endpoints
Primary Endpoints
Disease Progression as Measured by the Clinical Dementia Rating - Sum of Boxes (CDR-SB) Score
Study completion up to 96 weeks

Change from baseline in Clinical Dementia Rating - Sum of Boxes (CDR-SB) score at Weeks 24, 48, 72 and 96. The CDR-SB is a tool used to measure disease severity in Alzheimer's disease. This scale assesses three domains of cognition and three domains of function. The domains are rated on a 5 point scale in which the higher the score corresponds to greater cognitive impairment. The scale range is from 0 to 18 where 0 is considered normal and 18 indicates severe dementia.

Secondary Endpoints
Change in Mini-Mental Status Examination (MMSE) Score
Study completion up to 96 weeks
Change in Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) Score
Study completion up to 96 weeks
Change in Alzheimer's Disease Assessment Scale - Cognitive Subscale (ADAS-Cog13) Score
Study completion up to 96 weeks
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
AL002 Dose 1EXPERIMENTALAL002 every 4 weeks
AL002 Dose 2EXPERIMENTALAL002 every 4 weeks
AL002 Dose 3EXPERIMENTALAL002 every 4 weeks
PlaceboPLACEBO_COMPARATORPlacebo every 4 weeks
Interventions
NameTypeDescription
AL002DRUGAdministered via intravenous (IV) infusion
PlaceboDRUGAdministered via intravenous (IV) infusion
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Eligibility Criteria
Age Range50 Years — 85 Years
SexALL
Healthy VolunteersNo
Study Sites87

Inclusion Criteria: * Diagnosis of Early AD including evidence of brain amyloidosis by CSF or PET * MMSE score ≥ 20 points, CDR Global Score of 0.5 - 1.0, and RBANS score on the DMI ≤95. * Study partner who consents to study participation and who cares for/visits the participant at least 10 hours a...

Countries:United StatesArgentinaAustraliaCanadaFranceGermanyItalyNetherlandsNew ZealandPolandSpainUnited Kingdom
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