Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 4712

A sealed prediction that did not hold.

no effect in discovery (spearman rho +0.12, p 0.756). This receipt's hash covers every field on it, plus the hash of receipt 4711, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 4712
    20 Oct 2026, 23:48 UTC

    AVPR1A

    dopamine neurons, braak

    predictionAVPR1A in dopamine neurons tracks Braak Lewy-body stage

    registered1883a53aac46b677

    discovery+0.12 p=0.756 n=9

    replication+0.40 p=0.285 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho +0.12, p 0.756)

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

    NO EFFECT

    1dd12cde5f5ae1477b08e690…
    follows 32a5b0e4ae0f…

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 4712: AVPR1A in dopamine neurons, braak

power
full sample +0.36 (p 0.140, n 18), 95% CI -0.13 to +0.71. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: +0.38 (p 0.120, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: +0.39 (p 0.114, n 18). could be the mix.
skeptic
leave-one-out range +0.27 to +0.56, sign flips 0; without severely affected donors +0.36 (p 0.140, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for AVPR1A in dopamine neurons.

case closed: nothing better to follow up.