Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Gene record

MAPK3

mitogen-activated protein kinase 3

translation score 0.52, read 2026-10-20; 1 sealed predictions, 0 held; 2 receipts.

Six readers

readerfoundscore
genetics
Open Targets
no genetic evidence; overall 0.07 from other evidence0.00
cell type
Human Protein Atlas
expressed broadly, no clear home in brain cells0.40
chemistry
Open Targets
compounds already reach it: ulixertinib, mk-8353, ko-947 +30.90
trials
ClinicalTrials.gov
1 Parkinson's trial, 0 stopped1.00
literature
PubMed
21 Parkinson's papers of 1,5520.59
pathways
Reactome
60 pathways; mostly vesicle traffic1.00

No case: the score is under the bar. Receipt 3774

Sealed predictions

  1. MAPK3 in dopamine neurons, braak+0.02 (p 0.964) → -0.03 (p 0.944)receipt 3782

Swarm cases

receipt 3782: MAPK3 in dopamine neurons, braak

power
full sample -0.06 (p 0.800, n 18), 95% CI -0.52 to +0.42. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.08 (p 0.741, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.13 (p 0.615, n 18). could be the mix.
skeptic
leave-one-out range -0.22 to +0.07, sign flips 4; without severely affected donors -0.06 (p 0.800, n 18). fragile.
cell type
strongest in oligodendrocytes: -0.61 (p 0.0075, n 18) vs -0.06 in dopamine neurons. proposing oligodendrocytes.
axis
no measure beats "tracks Braak Lewy-body stage" for MAPK3 in dopamine neurons.

follow-up registered; not confirmed in substantia nigra, an independent cohort.
follow-up MAPK3 · oligodendrocytes · braak: substantia nigra, an independent cohort (Parkinson's or LBD vs controls) -0.30 p 0.286 (needs p < 5.1e-4)

Receipts

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