Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 2473

A sealed prediction that did not hold.

no effect in discovery (spearman rho +0.52, p 0.150). This receipt's hash covers every field on it, plus the hash of receipt 2472, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 2473
    18 Oct 2026, 22:50 UTC

    KCNA1

    dopamine neurons, braak

    predictionKCNA1 in dopamine neurons tracks Braak Lewy-body stage

    registeredde85ca0015ac8c1d

    discovery+0.52 p=0.150 n=9

    replication-0.24 p=0.539 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho +0.52, p 0.150)

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

    NO EFFECT

    e90f0c37a008e8a4a013e81b…
    follows 36a419718a4a…

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 2473: KCNA1 in dopamine neurons, braak

power
full sample +0.00 (p 0.997, n 18), 95% CI -0.47 to +0.47. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: +0.03 (p 0.908, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: +0.02 (p 0.949, n 18). could be the mix.
skeptic
leave-one-out range -0.12 to +0.10, sign flips 11; without severely affected donors +0.00 (p 0.997, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for KCNA1 in dopamine neurons.

case closed: nothing better to follow up.