Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 5634

A sealed prediction that did not hold.

no effect in discovery (spearman rho -0.26, p 0.504). This receipt's hash covers every field on it, plus the hash of receipt 5633, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 5634
    21 Oct 2026, 19:29 UTC

    HTR6

    dopamine neurons, braak

    predictionHTR6 in dopamine neurons tracks Braak Lewy-body stage

    registered7d8cd50d9f7c1911

    discovery-0.26 p=0.504 n=9

    replication+0.06 p=0.870 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho -0.26, p 0.504)

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

    NO EFFECT

    f8cac9c3023f644a99d7731a…
    follows 5ab4b8a67a77…

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 5634: HTR6 in dopamine neurons, braak

power
full sample -0.14 (p 0.591, n 18), 95% CI -0.57 to +0.35. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.14 (p 0.591, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.16 (p 0.526, n 18). could be the mix.
skeptic
leave-one-out range -0.28 to -0.03, sign flips 0; without severely affected donors -0.14 (p 0.591, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for HTR6 in dopamine neurons.

case closed: nothing better to follow up.