Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 12775

A sealed prediction that did not hold.

no effect in discovery (spearman rho -0.09, p 0.825). This receipt's hash covers every field on it, plus the hash of receipt 12774, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 12775
    28 Oct 2026, 07:05 UTC


    PSMB2

    dopamine neurons, braak


    predictionPSMB2 in dopamine neurons tracks Braak Lewy-body stage

    registeredaf5e53f656ff9cbb

    discovery-0.09 p=0.825 n=9

    replication+0.00 p=1.000 n=9

    neededp < 0.05 twice, same sign


    no effect in discovery (spearman rho -0.09, p 0.825)

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

    NO EFFECT

    fb94435c22a0a6c1cfe66390…
    follows 2aa50346d3d4…

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The swarm's case

receipt 12775: PSMB2 in dopamine neurons, braak

power
full sample -0.06 (p 0.800, n 18), 95% CI -0.52 to +0.42. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.07 (p 0.787, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.04 (p 0.874, n 18). could be the mix.
skeptic
leave-one-out range -0.18 to +0.07, sign flips 4; without severely affected donors -0.06 (p 0.800, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for PSMB2 in dopamine neurons.

case closed: nothing better to follow up.