Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 2894

A sealed prediction that did not hold.

no effect in discovery (spearman rho -0.10, p 0.803). This receipt's hash covers every field on it, plus the hash of receipt 2893, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 2894
    19 Oct 2026, 07:42 UTC

    EGFR

    dopamine neurons, braak

    predictionEGFR in dopamine neurons tracks Braak Lewy-body stage

    registered22f8b9b5b7e576d8

    discovery-0.10 p=0.803 n=9

    replication-0.41 p=0.273 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho -0.10, p 0.803)

    dataVolpato et al. 2025, ventral substantia nigra (18 donors)

    NO EFFECT

    8ba4a66818b8c18a4979412d…
    follows f605c62753ef…

Covered by the on-chain checkpoint of receipt 10865 (2026-10-26 13:05 UTC). See the checkpoint on Robinhood Chain. Previous receipt Next

The swarm's case

receipt 2894: EGFR in dopamine neurons, braak

power
full sample -0.20 (p 0.429, n 18), 95% CI -0.61 to +0.30. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.19 (p 0.455, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.25 (p 0.323, n 18). could be the mix.
skeptic
leave-one-out range -0.32 to -0.10, sign flips 0; without severely affected donors -0.20 (p 0.429, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for EGFR in dopamine neurons.

case closed: nothing better to follow up.