Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 13215

A sealed prediction that did not hold.

no effect in discovery (spearman rho -0.24, p 0.529). This receipt's hash covers every field on it, plus the hash of receipt 13214, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 13215
    28 Oct 2026, 16:59 UTC

    EIF4G2

    dopamine neurons, braak

    predictionEIF4G2 in dopamine neurons tracks Braak Lewy-body stage

    registered012033b456b4fd63

    discovery-0.24 p=0.529 n=9

    replication+0.46 p=0.209 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho -0.24, p 0.529)

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

    NO EFFECT

    b81edcbffd71abc75fcf313b…
    follows b4b9c14aa214…

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The swarm's case

receipt 13215: EIF4G2 in dopamine neurons, braak

power
full sample +0.17 (p 0.509, n 18), 95% CI -0.33 to +0.59. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: +0.16 (p 0.532, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: +0.20 (p 0.429, n 18). could be the mix.
skeptic
leave-one-out range +0.06 to +0.26, sign flips 0; without severely affected donors +0.17 (p 0.509, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for EIF4G2 in dopamine neurons.

case closed: nothing better to follow up.