Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 2207

A sealed prediction that did not hold.

no effect in discovery (spearman rho -0.14, p 0.720). This receipt's hash covers every field on it, plus the hash of receipt 2206, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 2207
    18 Oct 2026, 16:44 UTC

    RGMA

    dopamine neurons, braak

    predictionRGMA in dopamine neurons tracks Braak Lewy-body stage

    registereda7d76c90023f1e6e

    discovery-0.14 p=0.720 n=9

    replication-0.45 p=0.222 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho -0.14, p 0.720)

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

    NO EFFECT

    687216555b2bfb389154c7af…
    follows 7a023ba10442…

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 2207: RGMA in dopamine neurons, braak

power
full sample -0.34 (p 0.164, n 18), 95% CI -0.70 to +0.15. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.42 (p 0.086, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.47 (p 0.050, n 18). not the mix.
skeptic
leave-one-out range -0.47 to -0.25, sign flips 0; without severely affected donors -0.34 (p 0.164, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for RGMA in dopamine neurons.

case closed: nothing better to follow up.