Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Gene record

NPHP3

nephrocystin 3

translation score 0.67, read 2026-10-20; 2 sealed predictions, 0 held; 2 receipts.

Six readers

readerfoundscore
genetics
Open Targets
genetic association 0.06 (overall 0.07)0.06
cell type
Human Protein Atlas
group enriched in oligodendrocytes (140 nCPM)1.00
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
1 pathway; mostly vesicle traffic1.00
proposal for NPHP3, translation score 0.67

Knock down and overexpress NPHP3 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 NPHP3 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. NPHP3 in dopamine neurons, braak-0.41 (p 0.273) → +0.01 (p 0.982)receipt 4127
  2. NPHP3 in oligodendrocytes, braak-0.13 (p 0.740) → -0.13 (p 0.733)receipt 4126

Swarm cases

receipt 4127: NPHP3 in dopamine neurons, braak

power
full sample -0.24 (p 0.346, n 18), 95% CI -0.63 to +0.26. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.23 (p 0.365, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.28 (p 0.254, n 18). could be the mix.
skeptic
leave-one-out range -0.39 to -0.15, sign flips 0; without severely affected donors -0.24 (p 0.346, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for NPHP3 in dopamine neurons.

case closed: nothing better to follow up.

receipt 4126: NPHP3 in oligodendrocytes, braak

power
full sample -0.13 (p 0.615, n 18), 95% CI -0.56 to +0.36. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.13 (p 0.615, 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 -0.23 to +0.00, sign flips 1; without severely affected donors -0.13 (p 0.615, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for NPHP3 in oligodendrocytes.

case closed: nothing better to follow up.

Receipts

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