Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 1262

A sealed prediction that did not hold.

did not replicate (discovery -0.78 p 0.013; held-out +0.10 p 0.802). This receipt's hash covers every field on it, plus the hash of receipt 1261, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 1262
    17 Oct 2026, 18:37 UTC

    CACNA1G

    dopamine neurons, braak

    predictionCACNA1G in dopamine neurons tracks Braak Lewy-body stage

    registered1d7775cbe2d79827

    discovery-0.78 p=0.013 n=9

    replication+0.10 p=0.802 n=9

    neededp < 0.05 twice, same sign

    did not replicate (discovery -0.78 p 0.013; held-out +0.10 p 0.802)

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

    DID NOT REPLICATE

    56ed51bd7d5eba786bf6514e…
    follows 8f3fa9e83318…

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 1262: CACNA1G in dopamine neurons, braak

power
full sample -0.31 (p 0.204, n 18), 95% CI -0.68 to +0.18. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.29 (p 0.239, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.48 (p 0.042, n 18). not the mix.
skeptic
leave-one-out range -0.47 to -0.23, sign flips 0; without severely affected donors -0.31 (p 0.204, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for CACNA1G in dopamine neurons.

case closed: nothing better to follow up.