Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 5407

A sealed prediction that did not hold.

no effect in discovery (spearman rho -0.28, p 0.470). This receipt's hash covers every field on it, plus the hash of receipt 5406, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 5407
    21 Oct 2026, 14:34 UTC

    PLAT

    dopamine neurons, braak

    predictionPLAT in dopamine neurons tracks Braak Lewy-body stage

    registered94a288cf2a3f2cd9

    discovery-0.28 p=0.470 n=9

    replication-0.15 p=0.705 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho -0.28, p 0.470)

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

    NO EFFECT

    bc54d78b0381257bb27d9242…
    follows e4d362ce873a…

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 5407: PLAT in dopamine neurons, braak

power
full sample -0.27 (p 0.285, n 18), 95% CI -0.65 to +0.23. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.26 (p 0.294, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.36 (p 0.148, n 18). could be the mix.
skeptic
leave-one-out range -0.43 to -0.17, sign flips 0; without severely affected donors -0.27 (p 0.285, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for PLAT in dopamine neurons.

case closed: nothing better to follow up.