Last reviewed: June 2, 2026

Alector

AL003

TargetCD33
Modalitymonoclonal antibody
IndicationAlzheimer's disease
PhasePhase 1 (Discontinued)
PartnerAbbVie
Trial IDNCT03822208

Notes

AL003 was a monoclonal antibody directed against CD33, designed to block this inhibitory receptor and promote microglial phagocytosis of amyloid beta. The program was discontinued by AbbVie following Phase 1 evaluations.

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Last reviewed: June 2, 2026