Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 14971

A sealed prediction that did not hold.

no effect in discovery (spearman rho +0.28, p 0.473). This receipt's hash covers every field on it, plus the hash of receipt 14970, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 14971
    30 Oct 2026, 07:56 UTC

    FAM234A

    dopamine neurons, braak

    predictionFAM234A in dopamine neurons tracks Braak Lewy-body stage

    registered47660e3ee909c8e2

    discovery+0.28 p=0.473 n=9

    replication-0.62 p=0.073 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho +0.28, p 0.473)

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

    NO EFFECT

    624c51af0bffc6ace26fdf86…
    follows 5a3590652215…

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The swarm's case

receipt 14971: FAM234A in dopamine neurons, braak

power
full sample -0.14 (p 0.573, n 18), 95% CI -0.57 to +0.35. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.17 (p 0.493, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.17 (p 0.498, n 18). could be the mix.
skeptic
leave-one-out range -0.25 to -0.04, sign flips 0; without severely affected donors -0.14 (p 0.573, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for FAM234A in dopamine neurons.

case closed: nothing better to follow up.