Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Gene record

PDE9A

phosphodiesterase 9A

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

Six readers

readerfoundscore
genetics
Open Targets
no genetic evidence; overall 0.34 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: osoresnontrine, tovinontrine, pentoxifylline +31.00
trials
ClinicalTrials.gov
1 Parkinson's trial, 0 stopped1.00
literature
PubMed
no papers tie it to Parkinson's yet1.00
pathways
Reactome
1 pathway; mostly other0.30

No case: the score is under the bar. Receipt 0932

Sealed predictions

  1. PDE9A in dopamine neurons, braak-0.13 (p 0.733) → -0.15 (p 0.697)receipt 0940

Swarm cases

receipt 0940: PDE9A in dopamine neurons, braak

power
full sample -0.31 (p 0.204, n 18), 95% CI -0.68 to +0.18. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.29 (p 0.239, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.44 (p 0.067, n 18). could be the mix.
skeptic
leave-one-out range -0.43 to -0.22, sign flips 0; without severely affected donors -0.31 (p 0.204, n 18). fragile.
cell type
strongest in oligodendrocytes: -0.67 (p 0.0025, n 18) vs -0.31 in dopamine neurons. proposing oligodendrocytes.
axis
no measure beats "tracks Braak Lewy-body stage" for PDE9A in dopamine neurons.

follow-up registered; not confirmed in substantia nigra, an independent cohort.
follow-up PDE9A · oligodendrocytes · braak: substantia nigra, an independent cohort (Parkinson's or LBD vs controls) +0.30 p 0.286 (needs p < 0.0014)

Receipts

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