Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Gene record

MTMR9

myotubularin related protein 9

translation score 0.63, read 2026-10-17; 2 sealed predictions, 0 held; 2 receipts.

Six readers

readerfoundscore
genetics
Open Targets
no genetic evidence; overall 0.44 from other evidence0.00
cell type
Human Protein Atlas
cell type enhanced in oligodendrocytes (56 nCPM)1.00
chemistry
Open Targets
reachable by antibody0.45
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
3 pathways; mostly vesicle traffic1.00
proposal for MTMR9, translation score 0.63

Knock down and overexpress MTMR9 in oligodendrocytes; measure LRRK2 kinase activity (pT73-Rab10) and lysosome position 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
LRRK2 kinase activity (pT73-Rab10) and lysosome position
Functional readout
α-synuclein uptake and myelin basic protein output under oxidative stress
Rule-out
If neither arm moves LRRK2 kinase activity (pT73-Rab10) 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 MTMR9 in iPSC-derived oligodendrocytes; n = 3 differentiations; readouts: LRRK2 kinase activity (pT73-Rab10) and lysosome position; 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. MTMR9 in dopamine neurons, braak+0.44 (p 0.232) → +0.53 (p 0.146)receipt 0451
  2. MTMR9 in oligodendrocytes, braak+0.43 (p 0.243) → -0.01 (p 0.982)receipt 0450

Swarm cases

receipt 0451: MTMR9 in dopamine neurons, braak

power
full sample +0.54 (p 0.021, n 18), 95% CI +0.10 to +0.80. the interval excludes zero: something may be there, smaller than a half can see.
confounder
adjusted for sex: +0.51 (p 0.029, n 18). holds up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: +0.50 (p 0.034, n 18). not the mix.
skeptic
leave-one-out range +0.48 to +0.67, sign flips 0; without severely affected donors +0.54 (p 0.021, n 18). robust.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for MTMR9 in dopamine neurons.

case closed: nothing better to follow up.

receipt 0450: MTMR9 in oligodendrocytes, braak

power
full sample +0.21 (p 0.413, n 18), 95% CI -0.29 to +0.61. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: +0.21 (p 0.413, n 18). does not hold up.
composition
oligodendrocytes share of nuclei vs axis +0.03 (p 0.915); controlling for it: +0.14 (p 0.567, n 18). could be the mix.
skeptic
leave-one-out range +0.11 to +0.35, sign flips 0; without severely affected donors +0.21 (p 0.413, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for MTMR9 in oligodendrocytes.

case closed: nothing better to follow up.

Receipts

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