Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 11227

A sealed prediction that did not hold.

no effect in discovery (spearman rho +0.07, p 0.855). This receipt's hash covers every field on it, plus the hash of receipt 11226, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 11227
    26 Oct 2026, 21:35 UTC

    KRT18

    dopamine neurons, braak

    predictionKRT18 in dopamine neurons tracks Braak Lewy-body stage

    registerede4860586818cfb8d

    discovery+0.07 p=0.855 n=9

    replication+0.10 p=0.807 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho +0.07, p 0.855)

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

    NO EFFECT

    aba781f97723a4593c6c2736…
    follows 896689cbe0af…

Covered by the on-chain checkpoint of receipt 11237 (2026-10-26 21:49 UTC). See the checkpoint on Robinhood Chain. Previous receipt Next

The swarm's case

receipt 11227: KRT18 in dopamine neurons, braak

power
full sample +0.16 (p 0.526, 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 0.418, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: +0.03 (p 0.901, n 18). could be the mix.
skeptic
leave-one-out range +0.05 to +0.32, sign flips 0; without severely affected donors +0.16 (p 0.526, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for KRT18 in dopamine neurons.

case closed: nothing better to follow up.