Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Gene record

BTK

Bruton tyrosine kinase

translation score 0.60, read 2026-10-23; 2 sealed predictions, 0 held; 2 receipts.

Six readers

readerfoundscore
genetics
Open Targets
no genetic evidence; overall 0.02 from other evidence0.00
cell type
Human Protein Atlas
cell type enhanced, including microglia; strongest in megakaryocytes0.75
chemistry
Open Targets
compounds already reach it: vecabrutinib, tolebrutinib, pirtobrutinib +211.00
trials
ClinicalTrials.gov
no Parkinson's trials on record: an open field1.00
literature
PubMed
6 Parkinson's papers of 5,5130.74
pathways
Reactome
14 pathways; mostly immune signalling0.90
proposal for BTK, translation score 0.60

Knock down and overexpress BTK in microglia; measure IL-1β and TNF release and surface HLA-DR and uptake and clearance of α-synuclein fibrils and NLRP3 inflammasome activation (IL-1β release).

Cell type
microglia
Direction
Both arms: public data does not say which way helps; existing compounds already reach the inhibition arm.
Molecular readout
IL-1β and TNF release and surface HLA-DR
Functional readout
uptake and clearance of α-synuclein fibrils and NLRP3 inflammasome activation (IL-1β release)
Rule-out
If neither arm moves IL-1β by 20% or more against non-targeting and empty-vector controls, across three independent differentiations, the hypothesis is wrong.
Lab request
CRISPRi knockdown and lentiviral overexpression of BTK in iPSC-derived microglia (iMGL); n = 3 differentiations; readouts: IL-1β and TNF release and surface HLA-DR; uptake and clearance of α-synuclein fibrils and NLRP3 inflammasome activation (IL-1β release). Controls: non-targeting guide, empty vector. About 8 to 10 weeks, most of it differentiation.

Sealed predictions

  1. BTK in dopamine neurons, braak-0.22 (p 0.567) → +0.54 (p 0.135)receipt 7514
  2. BTK in microglia, braak-0.18 (p 0.648) → +0.62 (p 0.074)receipt 7513

Swarm cases

receipt 7514: BTK in dopamine neurons, braak

power
full sample +0.01 (p 0.983, n 18), 95% CI -0.46 to +0.47. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: +0.06 (p 0.807, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: +0.05 (p 0.854, n 18). could be the mix.
skeptic
leave-one-out range -0.11 to +0.13, sign flips 9; without severely affected donors +0.01 (p 0.983, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for BTK in dopamine neurons.

case closed: nothing better to follow up.

receipt 7513: BTK in microglia, braak

power
full sample -0.06 (p 0.814, n 18), 95% CI -0.51 to +0.42. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.05 (p 0.854, n 18). does not hold up.
composition
microglia share of nuclei vs axis -0.11 (p 0.652); controlling for it: -0.07 (p 0.794, n 18). could be the mix.
skeptic
leave-one-out range -0.20 to +0.05, sign flips 3; without severely affected donors -0.06 (p 0.814, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for BTK in microglia.

case closed: nothing better to follow up.

Receipts

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