Genedex: Contextualizing gene signatures across Alzheimer's disease pathology, cell types, and brain regions

Genedex integrates 1,562 gene signatures from 34 Alzheimer's disease studies and recovers established AD biology while resolving directional contradictions across 10,657 discordant genes.

• Why it matters: Therapeutic gene prioritization in Alzheimer’s depends on consistent context—brain region, cell type, pathology links, and whether genes change up or down—yet published findings often conflict.
• What they did: The team annotated signatures for pathological process, cell type, brain region, and direction of change, then used Genedex to map heat-shock chaperones and neurotrophic signaling, including LINGO1.
• The result: Heat-shock chaperone genes are broadly upregulated with tau burden but diverge with amyloid, while LINGO1 is upregulated with neuritic plaque load and tau and is inversely correlated with BDNF and NTRK2 in tau-affected RORB excitatory neurons.