Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Gene record

PPID

peptidylprolyl isomerase D

translation score 0.42, read 2026-10-24; 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
a small-molecule pocket0.60
trials
ClinicalTrials.gov
no Parkinson's trials on record: an open field1.00
literature
PubMed
6 Parkinson's papers of 3220.74
pathways
Reactome
1 pathway; mostly other0.30

No case: the score is under the bar. Receipt 8812

Sealed predictions

  1. PPID in dopamine neurons, braak+0.56 (p 0.115) → +0.41 (p 0.273)receipt 8819

Swarm cases

receipt 8819: PPID in dopamine neurons, braak

power
full sample +0.52 (p 0.028, n 18), 95% CI +0.07 to +0.79. the interval excludes zero: something may be there, smaller than a half can see.
confounder
adjusted for sex: +0.48 (p 0.042, n 18). holds up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: +0.45 (p 0.059, n 18). could be the mix.
skeptic
leave-one-out range +0.45 to +0.59, sign flips 0; without severely affected donors +0.52 (p 0.028, n 18). robust.
cell type
strongest in astrocytes: +0.64 (p 0.0039, n 18) vs +0.52 in dopamine neurons. proposing astrocytes.
axis
no measure beats "tracks Braak Lewy-body stage" for PPID in dopamine neurons.

follow-up registered; not confirmed in substantia nigra, an independent cohort.
follow-up PPID · astrocytes · braak: substantia nigra, an independent cohort (Parkinson's or LBD vs controls) +0.57 p 0.041 (needs p < 2.4e-4)

Receipts

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