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AL001

Phase 2

Frontotemporal Dementia | Small molecule | Neurology |Alector, Inc.|Last Updated: Dec 5, 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
UNCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment33
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT03987295A Phase 2 Study to Evaluate Safety of Long-term AL001 Dosing in Frontotemporal Dementia (FTD) Patients (INFRONT-2)PHASE2 COMPLETED 33Sep 27, 2019Jun 5, 2024Dec 5, 202512 United States, Canada +4
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Study Endpoints
Primary Endpoints
Severity of TEAEs
197 weeks

Number of TEAEs categorized by severity

Severity of Treatment-Related TEAEs
197 weeks

Number of treatment-related TEAEs categorized by severity

Any TEAE Leading to Study Drug Discontinuation
197 weeks

Number of TEAEs leading to study drug discontinuation

Immunogenicity Antidrug Antibodies (ADA) Titer
97 weeks

Titer values of antidrug antibodies (ADAs) in participants receiving latozinemab at week 97/Part 1 end of study

Confirmatory Immunogenicity Antidrug Antibodies (ADA) Responses
97 weeks

Presence of confirmatory antidrug antibodies (ADAs) in participants who test positive for ADA at week 97 (Part 1 End of Study).

Change From Baseline in Sheehan Suicidality Tracking Scale
197 weeks

The Sheehan Suicidality Tracking Scale (S-STS) is a structured assessment tool used to evaluate the presence, severity, and frequency of suicidal ideation and behavior. It includes items that address passive thoughts of death, active suicidal ideation, intent, planning, suicide attempts, and non-suicidal self-injury. The S-STS total score ranges from 0 to 64, based on 16 items each rated from 0 (not at all) to 4 (extremely), with higher scores indicating greater severity of suicidal ideation, intent, or behavior. The total score provides a quantitative measure of suicidality severity and is sensitive to change over time, making it suitable for clinical monitoring and research use.

Secondary Endpoints
Longitudinal Percent Change From Baseline of CSF PGRN
97 weeks
Longitudinal Percent Change From Baseline in Plasma PGRN
97 weeks
Longitudinal Levels of Sortilin in WBCs
97 weeks
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Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Granulin and C9orf72EXPERIMENTALIV administration of AL001; 60 mg/kg, every 4 weeks \[q4w\]
Interventions
NameTypeDescription
AL001DRUG60 mg/kg of AL001 every 4 weeks
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Eligibility Criteria
Age Range18 Years — 85 Years
SexALL
Healthy VolunteersNo
Study Sites12

Inclusion Criteria: * At screening, female participants must be nonpregnant and nonlactating * In good physical health on the basis of no clinically significant findings from medical history, physical examinations (PEs), laboratory tests, ECGs, and vital signs. * Participant is a carrier of a loss ...

Countries:United StatesCanadaGermanyItalyNetherlandsUnited Kingdom
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