Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 4716

A sealed prediction that did not hold.

no effect in discovery (spearman rho -0.66, p 0.054). This receipt's hash covers every field on it, plus the hash of receipt 4715, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 4716
    20 Oct 2026, 23:54 UTC

    KCNQ4

    dopamine neurons, braak

    predictionKCNQ4 in dopamine neurons tracks Braak Lewy-body stage

    registerededcc37ebae5015a8

    discovery-0.66 p=0.054 n=9

    replication-0.61 p=0.084 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho -0.66, p 0.054)

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

    NO EFFECT

    b5c462e19e1b4a85764ff8b4…
    follows d8b1abcdec4c…

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 4716: KCNQ4 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: -0.56 (p 0.017, n 18). holds up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.71 (p 9.6e-4, n 18). not the mix.
skeptic
leave-one-out range -0.70 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 KCNQ4 in dopamine neurons.

case closed: nothing better to follow up.