Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 4763

A sealed prediction that did not hold.

no effect in discovery (spearman rho -0.30, p 0.428). This receipt's hash covers every field on it, plus the hash of receipt 4762, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 4763
    21 Oct 2026, 01:08 UTC

    KCNA7

    dopamine neurons, braak

    predictionKCNA7 in dopamine neurons tracks Braak Lewy-body stage

    registereddd078395a14870b3

    discovery-0.30 p=0.428 n=9

    replication-0.43 p=0.243 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho -0.30, p 0.428)

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

    NO EFFECT

    1a6e04126d1ed736f12fc4ea…
    follows a91fa34fe8f0…

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 4763: KCNA7 in dopamine neurons, braak

power
full sample -0.40 (p 0.099, n 18), 95% CI -0.73 to +0.08. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.39 (p 0.109, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.37 (p 0.135, n 18). could be the mix.
skeptic
leave-one-out range -0.52 to -0.32, sign flips 0; without severely affected donors -0.40 (p 0.099, n 18). robust.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for KCNA7 in dopamine neurons.

case closed: nothing better to follow up.