Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 4168

A sealed prediction that did not hold.

no effect in discovery (spearman rho -0.08, p 0.842). This receipt's hash covers every field on it, plus the hash of receipt 4167, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 4168
    20 Oct 2026, 11:25 UTC

    PLA2G4A

    microglia, braak

    predictionPLA2G4A in microglia tracks Braak Lewy-body stage

    registered595245ff64d891a0

    discovery-0.08 p=0.842 n=9

    replication-0.13 p=0.732 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho -0.08, p 0.842)

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

    NO EFFECT

    c28f1aa2735720e1da5d79e6…
    follows d5d5a664199a…

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 4168: PLA2G4A in microglia, braak

power
full sample -0.07 (p 0.774, n 18), 95% CI -0.52 to +0.41. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.05 (p 0.854, n 18). does not hold up.
composition
microglia share of nuclei vs axis -0.11 (p 0.652); controlling for it: -0.01 (p 0.969, n 18). could be the mix.
skeptic
leave-one-out range -0.22 to +0.04, sign flips 3; without severely affected donors -0.07 (p 0.774, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for PLA2G4A in microglia.

case closed: nothing better to follow up.