Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Gene record

SMAD4

SMAD family member 4

translation score 0.48, read 2026-10-26; 1 sealed predictions, 0 held; 2 receipts.

Six readers

readerfoundscore
genetics
Open Targets
no genetic evidence; overall 0.01 from other evidence0.00
cell type
Human Protein Atlas
expressed broadly, no clear home in brain cells0.40
chemistry
Open Targets
a small-molecule pocket0.60
trials
ClinicalTrials.gov
no Parkinson's trials on record: an open field1.00
literature
PubMed
6 Parkinson's papers of 6,3410.74
pathways
Reactome
21 pathways; mostly iron and oxidative stress0.80

No case: the score is under the bar. Receipt 10629

Sealed predictions

  1. SMAD4 in dopamine neurons, braak+0.07 (p 0.859) → +0.80 (p 0.009)receipt 10637

Swarm cases

receipt 10637: SMAD4 in dopamine neurons, braak

power
full sample +0.37 (p 0.127, n 18), 95% CI -0.11 to +0.72. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: +0.39 (p 0.105, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: +0.41 (p 0.093, n 18). could be the mix.
skeptic
leave-one-out range +0.30 to +0.54, sign flips 0; without severely affected donors +0.37 (p 0.127, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for SMAD4 in dopamine neurons.

case closed: nothing better to follow up.

Receipts

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