Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Gene record

KCNQ2

potassium voltage-gated channel subfamily Q member 2

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

Six readers

readerfoundscore
genetics
Open Targets
no genetic evidence; overall 0.06 from other evidence0.00
cell type
Human Protein Atlas
cell type enhanced in oligodendrocyte progenitor cells (100 nCPM)1.00
chemistry
Open Targets
compounds already reach it: nerispirdine, amifampridine phosphate, amifampridine +51.00
trials
ClinicalTrials.gov
no Parkinson's trials on record: an open field1.00
literature
PubMed
2 Parkinson's papers of 1,0630.85
pathways
Reactome
2 pathways; mostly dopamine synapse1.00
proposal for KCNQ2, translation score 0.67

Knock down and overexpress KCNQ2 in oligodendrocytes; measure evoked dopamine release and dopamine transporter uptake 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; existing compounds already reach the inhibition arm.
Molecular readout
evoked dopamine release and dopamine transporter uptake
Functional readout
α-synuclein uptake and myelin basic protein output under oxidative stress
Rule-out
If neither arm moves evoked dopamine release 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 KCNQ2 in iPSC-derived oligodendrocytes; n = 3 differentiations; readouts: evoked dopamine release and dopamine transporter uptake; 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. KCNQ2 in dopamine neurons, braak-0.30 (p 0.436) → -0.08 (p 0.840)receipt 4595
  2. KCNQ2 in oligodendrocytes, braak-0.46 (p 0.217) → -0.09 (p 0.821)receipt 4594

Swarm cases

receipt 4595: KCNQ2 in dopamine neurons, braak

power
full sample -0.19 (p 0.460, n 18), 95% CI -0.60 to +0.31. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.18 (p 0.471, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.24 (p 0.337, n 18). could be the mix.
skeptic
leave-one-out range -0.30 to -0.08, sign flips 0; without severely affected donors -0.19 (p 0.460, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for KCNQ2 in dopamine neurons.

case closed: nothing better to follow up.

receipt 4594: KCNQ2 in oligodendrocytes, braak

power
full sample -0.31 (p 0.218, n 18), 95% CI -0.68 to +0.19. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.22 (p 0.389, n 18). does not hold up.
composition
oligodendrocytes share of nuclei vs axis +0.03 (p 0.915); controlling for it: -0.36 (p 0.142, n 18). could be the mix.
skeptic
leave-one-out range -0.42 to -0.20, sign flips 0; without severely affected donors -0.31 (p 0.218, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for KCNQ2 in oligodendrocytes.

case closed: nothing better to follow up.

Receipts

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