Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Gene record

MRPS5

mitochondrial ribosomal protein S5

translation score 0.63, read 2026-10-23; 2 sealed predictions, 0 held; 2 receipts.

Six readers

readerfoundscore
genetics
Open Targets
genetic association 0.04 (overall 0.02)0.04
cell type
Human Protein Atlas
cell type enhanced, including oligodendrocytes; strongest in renal collecting duct intercalated cells0.75
chemistry
Open Targets
a small-molecule pocket0.60
trials
ClinicalTrials.gov
no Parkinson's trials on record: an open field1.00
literature
PubMed
no papers tie it to Parkinson's yet1.00
pathways
Reactome
4 pathways; mostly mitochondrial quality control1.00
proposal for MRPS5, translation score 0.63

Knock down and overexpress MRPS5 in oligodendrocytes; measure PINK1–parkin mitophagy flux (mt-Keima) and phospho-ubiquitin (pS65-Ub) and α-synuclein uptake and myelin basic protein output under oxidative stress.

Cell type
oligodendrocytes
Direction
Both arms: public data does not say which way helps.
Molecular readout
PINK1–parkin mitophagy flux (mt-Keima) and phospho-ubiquitin (pS65-Ub)
Functional readout
α-synuclein uptake and myelin basic protein output under oxidative stress
Rule-out
If neither arm moves PINK1–parkin mitophagy flux (mt-Keima) by 20% or more against non-targeting and empty-vector controls, across three independent differentiations, the hypothesis is wrong.
Lab request
CRISPRi knockdown and lentiviral overexpression of MRPS5 in iPSC-derived oligodendrocytes; n = 3 differentiations; readouts: PINK1–parkin mitophagy flux (mt-Keima) and phospho-ubiquitin (pS65-Ub); α-synuclein uptake and myelin basic protein output under oxidative stress. Controls: non-targeting guide, empty vector. About 8 to 10 weeks, most of it differentiation.

Sealed predictions

  1. MRPS5 in dopamine neurons, braak+0.57 (p 0.108) → +0.26 (p 0.493)receipt 7427
  2. MRPS5 in oligodendrocytes, braak+0.21 (p 0.591) → +0.58 (p 0.102)receipt 7426

Swarm cases

receipt 7427: MRPS5 in dopamine neurons, braak

power
full sample +0.40 (p 0.097, n 18), 95% CI -0.08 to +0.73. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: +0.40 (p 0.103, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: +0.41 (p 0.095, n 18). could be the mix.
skeptic
leave-one-out range +0.34 to +0.58, sign flips 0; without severely affected donors +0.40 (p 0.097, n 18). robust.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for MRPS5 in dopamine neurons.

case closed: nothing better to follow up.

receipt 7426: MRPS5 in oligodendrocytes, braak

power
full sample +0.40 (p 0.103, n 18), 95% CI -0.09 to +0.73. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: +0.39 (p 0.114, n 18). does not hold up.
composition
oligodendrocytes share of nuclei vs axis +0.03 (p 0.915); controlling for it: +0.49 (p 0.041, n 18). not the mix.
skeptic
leave-one-out range +0.30 to +0.52, sign flips 0; without severely affected donors +0.40 (p 0.103, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for MRPS5 in oligodendrocytes.

case closed: nothing better to follow up.

Receipts

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