Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 7977

A sealed prediction that did not hold.

no effect in discovery (spearman rho -0.17, p 0.654). This receipt's hash covers every field on it, plus the hash of receipt 7976, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 7977
    23 Oct 2026, 22:20 UTC

    IL17D

    dopamine neurons, braak

    predictionIL17D in dopamine neurons tracks Braak Lewy-body stage

    registered136d1c07692a0f3d

    discovery-0.17 p=0.654 n=9

    replication-0.33 p=0.386 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho -0.17, p 0.654)

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

    NO EFFECT

    944d91b2b83021993d18511f…
    follows ad7933dea987…

Covered by the on-chain checkpoint of receipt 10865 (2026-10-26 13:05 UTC). See the checkpoint on Robinhood Chain. Previous receipt Next

The swarm's case

receipt 7977: IL17D in dopamine neurons, braak

power
full sample -0.32 (p 0.201, n 18), 95% CI -0.68 to +0.18. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.39 (p 0.109, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.39 (p 0.107, n 18). could be the mix.
skeptic
leave-one-out range -0.48 to -0.23, sign flips 0; without severely affected donors -0.32 (p 0.201, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for IL17D in dopamine neurons.

case closed: nothing better to follow up.