Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 13671

A sealed prediction that did not hold.

no effect in discovery (spearman rho +0.60, p 0.086). This receipt's hash covers every field on it, plus the hash of receipt 13670, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 13671
    29 Oct 2026, 03:02 UTC


    MRPL44

    dopamine neurons, braak


    predictionMRPL44 in dopamine neurons tracks Braak Lewy-body stage

    registered0e89608e9eebda3f

    discovery+0.60 p=0.086 n=9

    replication+0.27 p=0.484 n=9

    neededp < 0.05 twice, same sign


    no effect in discovery (spearman rho +0.60, p 0.086)

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

    NO EFFECT

    827fc9da1f290ce6bfcbe8b0…
    follows c223e25230cc…

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The swarm's case

receipt 13671: MRPL44 in dopamine neurons, braak

power
full sample +0.47 (p 0.049, n 18), 95% CI +0.01 to +0.77. the interval excludes zero: something may be there, smaller than a half can see.
confounder
adjusted for sex: +0.46 (p 0.052, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: +0.42 (p 0.082, n 18). could be the mix.
skeptic
leave-one-out range +0.39 to +0.57, sign flips 0; without severely affected donors +0.47 (p 0.049, n 18). robust.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for MRPL44 in dopamine neurons.

case closed: nothing better to follow up.