Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 8838

A sealed prediction that did not hold.

no effect in discovery (spearman rho -0.16, p 0.685). This receipt's hash covers every field on it, plus the hash of receipt 8837, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 8838
    24 Oct 2026, 17:03 UTC

    SIGLEC9

    microglia, braak

    predictionSIGLEC9 in microglia tracks Braak Lewy-body stage

    registered066bc02e4f84e48b

    discovery-0.16 p=0.685 n=9

    replication-0.11 p=0.775 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho -0.16, p 0.685)

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

    NO EFFECT

    963bb4b940db56a8f102b6cb…
    follows 8a3d8eb4550c…

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 8838: SIGLEC9 in microglia, braak

power
full sample -0.09 (p 0.715, n 18), 95% CI -0.54 to +0.39. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.07 (p 0.774, n 18). does not hold up.
composition
microglia share of nuclei vs axis -0.11 (p 0.652); controlling for it: -0.13 (p 0.603, n 18). could be the mix.
skeptic
leave-one-out range -0.23 to +0.01, sign flips 3; without severely affected donors -0.09 (p 0.715, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for SIGLEC9 in microglia.

case closed: nothing better to follow up.