Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 5726

A sealed prediction that did not hold.

no effect in discovery (spearman rho -0.05, p 0.893). This receipt's hash covers every field on it, plus the hash of receipt 5725, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 5726
    21 Oct 2026, 21:33 UTC

    COX4I2

    dopamine neurons, braak

    predictionCOX4I2 in dopamine neurons tracks Braak Lewy-body stage

    registereda2137e2e3f9a1566

    discovery-0.05 p=0.893 n=9

    replication-0.28 p=0.464 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho -0.05, p 0.893)

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

    NO EFFECT

    8e7e74fcce5b640ff25a124c…
    follows af5ae3e3a341…

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 5726: COX4I2 in dopamine neurons, braak

power
full sample -0.32 (p 0.194, n 18), 95% CI -0.69 to +0.17. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.26 (p 0.289, 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 -0.50 to -0.24, sign flips 0; without severely affected donors -0.32 (p 0.194, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for COX4I2 in dopamine neurons.

case closed: nothing better to follow up.