Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 13173

A sealed prediction that did not hold.

no effect in discovery (spearman rho -0.13, p 0.732). This receipt's hash covers every field on it, plus the hash of receipt 13172, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 13173
    28 Oct 2026, 16:02 UTC

    FBXL2

    dopamine neurons, braak

    predictionFBXL2 in dopamine neurons tracks Braak Lewy-body stage

    registered87c7629828627bc1

    discovery-0.13 p=0.732 n=9

    replication+0.44 p=0.234 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho -0.13, p 0.732)

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

    NO EFFECT

    85241d61d1f3d32062ab7ead…
    follows 65b091a5e25f…

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The swarm's case

receipt 13173: FBXL2 in dopamine neurons, braak

power
full sample +0.06 (p 0.800, n 18), 95% CI -0.42 to +0.52. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: +0.07 (p 0.774, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: +0.07 (p 0.774, n 18). could be the mix.
skeptic
leave-one-out range -0.03 to +0.18, 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 FBXL2 in dopamine neurons.

case closed: nothing better to follow up.