Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 16137

A sealed prediction that did not hold.

no effect in discovery (spearman rho +0.57, p 0.111). This receipt's hash covers every field on it, plus the hash of receipt 16136, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 16137
    31 Oct 2026, 10:29 UTC

    KRT1

    dopamine neurons, braak

    predictionKRT1 in dopamine neurons tracks Braak Lewy-body stage

    registeredb7a217b7bf938e07

    discovery+0.57 p=0.111 n=9

    replication+0.18 p=0.638 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho +0.57, p 0.111)

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

    NO EFFECT

    3a3567b90168cf4f25ef4f05…
    follows 70c93f1a589c…

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The swarm's case

receipt 16137: KRT1 in dopamine neurons, braak

power
full sample +0.21 (p 0.393, n 18), 95% CI -0.28 to +0.62. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: +0.15 (p 0.549, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.18 (p 0.471, n 18). could be the mix.
skeptic
leave-one-out range +0.11 to +0.35, sign flips 0; without severely affected donors +0.21 (p 0.393, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for KRT1 in dopamine neurons.

case closed: nothing better to follow up.