Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 8779

A sealed prediction that did not hold.

no effect in discovery (spearman rho -0.32, p 0.407). This receipt's hash covers every field on it, plus the hash of receipt 8778, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 8779
    24 Oct 2026, 15:43 UTC

    HTR5A

    dopamine neurons, braak

    predictionHTR5A in dopamine neurons tracks Braak Lewy-body stage

    registered5f6c7326d5e8113c

    discovery-0.32 p=0.407 n=9

    replication+0.21 p=0.586 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho -0.32, p 0.407)

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

    NO EFFECT

    d5cde842d16963725796405e…
    follows 65ec6f0d74df…

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 8779: HTR5A in dopamine neurons, braak

power
full sample -0.19 (p 0.455, n 18), 95% CI -0.60 to +0.31. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.19 (p 0.455, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.24 (p 0.332, n 18). could be the mix.
skeptic
leave-one-out range -0.33 to -0.09, sign flips 0; without severely affected donors -0.19 (p 0.455, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for HTR5A in dopamine neurons.

case closed: nothing better to follow up.