Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Gene record

GCH1

GTP cyclohydrolase 1

translation score 0.52, read 2026-10-17; 1 sealed predictions, 0 held; 2 receipts.

Six readers

readerfoundscore
genetics
Open Targets
genetic association 0.59 (overall 0.38)0.59
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
2 Parkinson's trials, 0 stopped1.00
literature
PubMed
150 Parkinson's papers of 7310.34
pathways
Reactome
1 pathway; mostly other0.30

No case: the score is under the bar. Receipt 0677

Sealed predictions

  1. GCH1 in dopamine neurons, braak-0.35 (p 0.355) → +0.34 (p 0.374)receipt 0682

Swarm cases

receipt 0682: GCH1 in dopamine neurons, braak

power
full sample -0.01 (p 0.983, n 18), 95% CI -0.47 to +0.46. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.12 (p 0.640, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.19 (p 0.444, n 18). could be the mix.
skeptic
leave-one-out range -0.09 to +0.13, sign flips 6; without severely affected donors -0.01 (p 0.983, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for GCH1 in dopamine neurons.

case closed: nothing better to follow up.

Receipts

loading the receipts