Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 4500

A sealed prediction that did not hold.

no effect in discovery (spearman rho +0.04, p 0.910). This receipt's hash covers every field on it, plus the hash of receipt 4499, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 4500
    20 Oct 2026, 18:57 UTC

    ITGAM

    microglia, braak

    predictionITGAM in microglia tracks Braak Lewy-body stage

    registered4bbdbffd544b4a94

    discovery+0.04 p=0.910 n=9

    replication-0.18 p=0.646 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho +0.04, p 0.910)

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

    NO EFFECT

    f6acf00b4998e53b75af4aac…
    follows 6b2ff6674c0f…

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 4500: ITGAM in microglia, braak

power
full sample -0.06 (p 0.814, n 18), 95% CI -0.51 to +0.42. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.09 (p 0.728, n 18). does not hold up.
composition
microglia share of nuclei vs axis -0.11 (p 0.652); controlling for it: -0.04 (p 0.888, n 18). could be the mix.
skeptic
leave-one-out range -0.19 to +0.06, sign flips 3; without severely affected donors -0.06 (p 0.814, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for ITGAM in microglia.

case closed: nothing better to follow up.