Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 6504

A sealed prediction that did not hold.

no effect in discovery (spearman rho -0.63, p 0.069). This receipt's hash covers every field on it, plus the hash of receipt 6503, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 6504
    22 Oct 2026, 14:04 UTC

    ABTB1

    dopamine neurons, braak

    predictionABTB1 in dopamine neurons tracks Braak Lewy-body stage

    registeredf011599298ec5eb4

    discovery-0.63 p=0.069 n=9

    replication-0.42 p=0.262 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho -0.63, p 0.069)

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

    NO EFFECT

    f1146af582d19f3eb519026f…
    follows ff7a8778b626…

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 6504: ABTB1 in dopamine neurons, braak

power
full sample -0.56 (p 0.017, n 18), 95% CI -0.81 to -0.12. the interval excludes zero: something may be there, smaller than a half can see.
confounder
adjusted for sex: -0.54 (p 0.021, n 18). holds up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.53 (p 0.023, n 18). not the mix.
skeptic
leave-one-out range -0.67 to -0.50, sign flips 0; without severely affected donors -0.56 (p 0.017, n 18). robust.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for ABTB1 in dopamine neurons.

case closed: nothing better to follow up.