Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Gene record

PPM1B

protein phosphatase, Mg2+/Mn2+ dependent 1B

translation score 0.52, read 2026-11-01; 2 sealed predictions, 0 held; 3 receipts.

Six readers

readerfoundscore
genetics
Open Targets
no genetic evidence; overall 0.00 from other evidence0.00
cell type
Human Protein Atlas
cell type enhanced, including oligodendrocytes; strongest in choroid plexus epithelial cells0.75
chemistry
Open Targets
hard to drug0.40
trials
ClinicalTrials.gov
no Parkinson's trials on record: an open field1.00
literature
PubMed
1 Parkinson's papers of 930.91
pathways
Reactome
3 pathways; mostly growth signalling0.60

No case: the score is under the bar. Receipt 17118

Sealed predictions

  1. PPM1B in oligodendrocytes, braak+0.54 (p 0.133) → +0.18 (p 0.638)receipt 17125
  2. PPM1B in dopamine neurons, braak+0.80 (p 0.010) → +0.27 (p 0.487)receipt 17126

Swarm cases

receipt 17126: PPM1B in dopamine neurons, braak

power
full sample +0.44 (p 0.069, n 18), 95% CI -0.04 to +0.75. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: +0.43 (p 0.077, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: +0.54 (p 0.021, n 18). not the mix.
skeptic
leave-one-out range +0.37 to +0.62, sign flips 0; without severely affected donors +0.44 (p 0.069, n 18). robust.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for PPM1B in dopamine neurons.

case closed: nothing better to follow up.

receipt 17125: PPM1B in oligodendrocytes, braak

power
full sample +0.32 (p 0.198, n 18), 95% CI -0.17 to +0.68. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: +0.26 (p 0.289, n 18). does not hold up.
composition
oligodendrocytes share of nuclei vs axis +0.03 (p 0.915); controlling for it: +0.38 (p 0.118, n 18). could be the mix.
skeptic
leave-one-out range +0.23 to +0.51, sign flips 0; without severely affected donors +0.32 (p 0.198, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for PPM1B in oligodendrocytes.

case closed: nothing better to follow up.

Receipts

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