Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 14255

A sealed prediction that did not hold.

no effect in discovery (spearman rho -0.32, p 0.400). This receipt's hash covers every field on it, plus the hash of receipt 14254, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 14255
    29 Oct 2026, 16:21 UTC

    DOCK8

    dopamine neurons, braak

    predictionDOCK8 in dopamine neurons tracks Braak Lewy-body stage

    registered4de0e6b91eb823e8

    discovery-0.32 p=0.400 n=9

    replication+0.15 p=0.705 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho -0.32, p 0.400)

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

    NO EFFECT

    44d8d2220a83b495bc2e861b…
    follows 61873e906e8a…

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The swarm's case

receipt 14255: DOCK8 in dopamine neurons, braak

power
full sample -0.12 (p 0.646, n 18), 95% CI -0.55 to +0.37. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.19 (p 0.439, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.14 (p 0.579, n 18). could be the mix.
skeptic
leave-one-out range -0.27 to -0.04, sign flips 0; without severely affected donors -0.12 (p 0.646, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for DOCK8 in dopamine neurons.

case closed: nothing better to follow up.