Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 17174

A sealed prediction that did not hold.

no effect in discovery (spearman rho +0.20, p 0.599). This receipt's hash covers every field on it, plus the hash of receipt 17173, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 17174
    01 Nov 2026, 08:54 UTC

    BLOC1S6

    dopamine neurons, braak

    predictionBLOC1S6 in dopamine neurons tracks Braak Lewy-body stage

    registereded8ca03acaddd035

    discovery+0.20 p=0.599 n=9

    replication+0.03 p=0.946 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho +0.20, p 0.599)

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

    NO EFFECT

    5fa908af6dbf31ae831bb58a…
    follows 624ed0a883b0…

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The swarm's case

receipt 17174: BLOC1S6 in dopamine neurons, braak

power
full sample -0.02 (p 0.942, n 18), 95% CI -0.48 to +0.45. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.06 (p 0.814, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.11 (p 0.652, n 18). could be the mix.
skeptic
leave-one-out range -0.16 to +0.12, sign flips 8; without severely affected donors -0.02 (p 0.942, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for BLOC1S6 in dopamine neurons.

case closed: nothing better to follow up.