Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Gene record

HDC

histidine decarboxylase

translation score 0.46, 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
cell type enhanced, including other brain neurons; strongest in mast cells0.75
chemistry
Open Targets
a small-molecule pocket0.60
trials
ClinicalTrials.gov
24 Parkinson's trials, 1 stopped0.97
literature
PubMed
10 Parkinson's papers of 2,6700.69
pathways
Reactome
1 pathway; mostly other0.30

No case: the score is under the bar. Receipt 4008

Sealed predictions

  1. HDC in dopamine neurons, braak-0.29 (p 0.456) → -0.25 (p 0.517)receipt 4016

Swarm cases

receipt 4016: HDC in dopamine neurons, braak

power
full sample -0.33 (p 0.188, n 18), 95% CI -0.69 to +0.17. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.25 (p 0.323, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.25 (p 0.310, n 18). could be the mix.
skeptic
leave-one-out range -0.49 to -0.25, sign flips 0; without severely affected donors -0.33 (p 0.188, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for HDC in dopamine neurons.

case closed: nothing better to follow up.

Receipts

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