Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Gene record

TTPA

alpha tocopherol transfer protein

translation score 0.49, read 2026-10-19; 2 sealed predictions, 0 held; 3 receipts.

Six readers

readerfoundscore
genetics
Open Targets
no genetic evidence; overall 0.08 from other evidence0.00
cell type
Human Protein Atlas
cell type enhanced, including astrocytes; strongest in hepatocytes0.75
chemistry
Open Targets
a small-molecule pocket0.60
trials
ClinicalTrials.gov
no Parkinson's trials on record: an open field1.00
literature
PubMed
2 Parkinson's papers of 1540.85
pathways
Reactome
1 pathway; mostly other0.30

No case: the score is under the bar. Receipt 3372

Sealed predictions

  1. TTPA in dopamine neurons, braak+0.82 (p 0.007) → +0.47 (p 0.197)receipt 3380
  2. TTPA in astrocytes, braak-0.19 (p 0.631) → +0.11 (p 0.787)receipt 3379

Swarm cases

receipt 3380: TTPA in dopamine neurons, braak

power
full sample +0.66 (p 0.0026, n 18), 95% CI +0.29 to +0.86. the interval excludes zero: something may be there, smaller than a half can see.
confounder
adjusted for sex: +0.67 (p 0.0024, n 18). holds up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: +0.69 (p 0.0014, n 18). not the mix.
skeptic
leave-one-out range +0.62 to +0.75, sign flips 0; without severely affected donors +0.66 (p 0.0026, n 18). robust.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for TTPA in dopamine neurons.

case closed: nothing better to follow up.

receipt 3379: TTPA in astrocytes, braak

power
full sample +0.16 (p 0.532, n 18), 95% CI -0.33 to +0.58. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: +0.20 (p 0.434, n 18). does not hold up.
composition
astrocytes share of nuclei vs axis -0.21 (p 0.413); controlling for it: +0.20 (p 0.434, n 18). could be the mix.
skeptic
leave-one-out range +0.05 to +0.27, sign flips 0; without severely affected donors +0.16 (p 0.532, n 18). fragile.
cell type
strongest in dopamine neurons: +0.66 (p 0.0026, n 18) vs +0.16 in astrocytes. proposing dopamine neurons.
axis
no measure beats "tracks Braak Lewy-body stage" for TTPA in astrocytes.

follow-up registered; not confirmed in substantia nigra, an independent cohort.
follow-up TTPA · dopamine neurons · braak: substantia nigra, an independent cohort (Parkinson's or LBD vs controls) -0.43 p 0.131 (needs p < 5.5e-4)

Receipts

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