Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Gene record

HBA2

hemoglobin subunit alpha 2

translation score 0.50, 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
expressed broadly, no clear home in brain cells0.40
chemistry
Open Targets
compounds already reach it: efaproxiral, voxelotor1.00
trials
ClinicalTrials.gov
no Parkinson's trials on record: an open field1.00
literature
PubMed
1 Parkinson's papers of 1,2940.91
pathways
Reactome
6 pathways; mostly other0.30

No case: the score is under the bar. Receipt 11420

Sealed predictions

  1. HBA2 in dopamine neurons, braak-0.05 (p 0.893) → +0.15 (p 0.701)receipt 11428

Swarm cases

receipt 11428: HBA2 in dopamine neurons, braak

power
full sample +0.07 (p 0.774, n 18), 95% CI -0.41 to +0.52. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: +0.08 (p 0.767, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: +0.11 (p 0.671, n 18). could be the mix.
skeptic
leave-one-out range -0.03 to +0.20, sign flips 3; without severely affected donors +0.07 (p 0.774, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for HBA2 in dopamine neurons.

case closed: nothing better to follow up.

Receipts

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