Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 6449

A sealed prediction that did not hold.

no effect in discovery (spearman rho +0.04, p 0.927). This receipt's hash covers every field on it, plus the hash of receipt 6448, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 6449
    22 Oct 2026, 12:52 UTC

    ERBB4

    astrocytes, braak

    predictionERBB4 in astrocytes tracks Braak Lewy-body stage

    registered772fb7c1a2045fc1

    discovery+0.04 p=0.927 n=9

    replication+0.27 p=0.489 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho +0.04, p 0.927)

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

    NO EFFECT

    a71b7c2e50eb8d7a168c312a…
    follows 84cdecb0ba01…

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 6449: ERBB4 in astrocytes, braak

power
full sample +0.00 (p 0.990, n 18), 95% CI -0.46 to +0.47. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.00 (p 0.997, n 18). does not hold up.
composition
astrocytes share of nuclei vs axis -0.21 (p 0.413); controlling for it: +0.06 (p 0.800, n 18). could be the mix.
skeptic
leave-one-out range -0.12 to +0.10, sign flips 7; without severely affected donors +0.00 (p 0.990, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for ERBB4 in astrocytes.

case closed: nothing better to follow up.