Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Gene record

DEFA4

defensin alpha 4

translation score 0.41, read 2026-10-27; 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
cell type enriched outside the brain (neutrophil progenitors)0.10
chemistry
Open Targets
reachable by antibody0.45
trials
ClinicalTrials.gov
no Parkinson's trials on record: an open field1.00
literature
PubMed
no papers tie it to Parkinson's yet1.00
pathways
Reactome
3 pathways; mostly other0.30

No case: the score is under the bar. Receipt 11367

Sealed predictions

  1. DEFA4 in dopamine neurons, braak+0.08 (p 0.838) → +0.10 (p 0.796)receipt 11375

Swarm cases

receipt 11375: DEFA4 in dopamine neurons, braak

power
full sample +0.09 (p 0.728, n 18), 95% CI -0.40 to +0.53. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: +0.15 (p 0.544, 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 -0.02 to +0.23, sign flips 1; without severely affected donors +0.09 (p 0.728, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for DEFA4 in dopamine neurons.

case closed: nothing better to follow up.

Receipts

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