Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 15558

A sealed prediction that did not hold.

no effect in discovery (spearman rho -0.58, p 0.102). This receipt's hash covers every field on it, plus the hash of receipt 15557, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 15558
    30 Oct 2026, 22:22 UTC

    TTLL1

    dopamine neurons, braak

    predictionTTLL1 in dopamine neurons tracks Braak Lewy-body stage

    registeredade45b0ee8f739fd

    discovery-0.58 p=0.102 n=9

    replication+0.28 p=0.459 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho -0.58, p 0.102)

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

    NO EFFECT

    5d8aabda958c5107ef735f4b…
    follows e447afa91283…

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The swarm's case

receipt 15558: TTLL1 in dopamine neurons, braak

power
full sample -0.20 (p 0.418, n 18), 95% CI -0.61 to +0.29. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.24 (p 0.346, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.29 (p 0.235, n 18). could be the mix.
skeptic
leave-one-out range -0.34 to -0.09, sign flips 0; without severely affected donors -0.20 (p 0.418, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for TTLL1 in dopamine neurons.

case closed: nothing better to follow up.