Mechanistic description
PTK2B, BIN1, PICALM, and SORL1 form a trafficking and kinase-linked AD risk cluster in the dataset. The notebook identifies this as a druggable axis because PTK2B is a kinase, BIN1 and PICALM implicate endocytosis, and SORL1 ties the module to APP trafficking. Hypothesis: Pyk2 pathway modulation will normalize tau phosphorylation and endosomal stress in APOE4 or tauopathy human neuronal co-cultures.
Mechanism / pathway
- PTK2B/BIN1/PICALM
- endocytosis, calcium signaling, and tau phosphorylation
- Alzheimer's disease
Evidence for (7)
PTK2B, BIN1, PICALM, and SORL1 are AD risk loci linked to tau, endocytosis, calcium signaling, and APP trafficking in curated notes.
Druggability ranking favors PTK2B because kinase biology offers a tractable perturbation point across the trafficking module.
Microglia PTK2B/Pyk2 in the Pathogenesis of Alzheimer's Disease.
Proteomic analysis identifies HSP90AA1, PTK2B, and ANXA2 in the human entorhinal cortex in Alzheimer's disease: Potential role in synaptic homeostasis and Aβ pathology through microglial and astroglial cells.
Alzheimer risk gene product Pyk2 suppresses tau phosphorylation and phenotypic effects of tauopathy.
Pyk2 is a Novel Tau Tyrosine Kinase that is Regulated by the Tyrosine Kinase Fyn.
Spreading of Alzheimer tau seeds is enhanced by aging and template matching with limited impact of amyloid-β.
Evidence against (1)
Common GWAS effect sizes are modest and causal direction may differ across neuronal and glial contexts.
Evidence matrix
Supporting
- PTK2B, BIN1, PICALM, and SORL1 are AD risk loci linked to tau, endocytosis, calcium signaling, and APP trafficking in curated notes. dataset:ad_genetic_risk_loci
- Druggability ranking favors PTK2B because kinase biology offers a tractable perturbation point across the trafficking module. notebook:gwas-ad-risk-loci-analysis
- Microglia PTK2B/Pyk2 in the Pathogenesis of Alzheimer's Disease. PMID:38321895 · 2023 · Curr Alzheimer Res
- Proteomic analysis identifies HSP90AA1, PTK2B, and ANXA2 in the human entorhinal cortex in Alzheimer's disease: Potential role in synaptic homeostasis and Aβ pathology through microglial and astroglial cells. PMID:38247340 · 2024 · Brain Pathol
- Alzheimer risk gene product Pyk2 suppresses tau phosphorylation and phenotypic effects of tauopathy. PMID:35501917 · 2022 · Mol Neurodegener
- Pyk2 is a Novel Tau Tyrosine Kinase that is Regulated by the Tyrosine Kinase Fyn. PMID:29782321 · 2018 · J Alzheimers Dis
- Spreading of Alzheimer tau seeds is enhanced by aging and template matching with limited impact of amyloid-β. PMID:34480901 · 2021 · J Biol Chem
Contradicting
- Common GWAS effect sizes are modest and causal direction may differ across neuronal and glial contexts. notebook:gwas-ad-risk-loci-analysis
Bayesian persona consensus
scidex.consensus.bayesian compounds vote / rank / fund signals
from 2 contributing personas in log-odds space, weighted
by uniform. Prior 50%.
Cite this hypothesis
Cite this hypothesis
etl-backfill (2026). Tau-trafficking GWAS loci define a druggable PTK2B endocytosis-kinase axis in AD. SciDEX hypothesis. https://prism.scidex.ai/hypotheses/h-gwas-ptk2b-endocytosis-axis-5dee99f5
@misc{scidex_hypothesis_hgwasptk,
title = {Tau-trafficking GWAS loci define a druggable PTK2B endocytosis-kinase axis in AD},
author = {etl-backfill},
year = {2026},
howpublished = {SciDEX hypothesis},
url = {https://prism.scidex.ai/hypotheses/h-gwas-ptk2b-endocytosis-axis-5dee99f5},
note = {SciDEX artifact hypothesis:h-gwas-ptk2b-endocytosis-axis-5dee99f5}
}