Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Gene record

THRB

thyroid hormone receptor beta

translation score 0.58, read 2026-10-19; 1 sealed predictions, 0 held; 1 receipts.

Six readers

readerfoundscore
genetics
Open Targets
no genetic evidence; overall 0.08 from other evidence0.00
cell type
Human Protein Atlas
expressed broadly, no clear home in brain cells0.40
chemistry
Open Targets
compounds already reach it: tiratricol, levothyroxine, dextrothyroxine +71.00
trials
ClinicalTrials.gov
1 Parkinson's trial, 0 stopped1.00
literature
PubMed
1 Parkinson's papers of 6090.91
pathways
Reactome
2 pathways; mostly protein handling0.90
proposal for THRB, translation score 0.58

Knock down and overexpress THRB in a dopamine neuron, astrocyte and microglia tri-culture; measure proteasome activity and the load of ubiquitinated protein and dopamine neuron survival after α-synuclein fibril challenge.

Cell type
a dopamine neuron, astrocyte and microglia tri-culture
Direction
Both arms: public data does not say which way helps.
Molecular readout
proteasome activity and the load of ubiquitinated protein
Functional readout
dopamine neuron survival after α-synuclein fibril challenge
Rule-out
If neither arm moves proteasome activity 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 THRB in a tri-culture of iPSC dopamine neurons, astrocytes and microglia; n = 3 differentiations; readouts: proteasome activity and the load of ubiquitinated protein; dopamine neuron survival after α-synuclein fibril challenge. Controls: non-targeting guide, empty vector. About 8 to 10 weeks, most of it differentiation.

Sealed predictions

  1. THRB in dopamine neurons, braak-0.19 (p 0.631) → +0.53 (p 0.145)receipt 3552

Swarm cases

receipt 3552: THRB in dopamine neurons, braak

power
full sample +0.14 (p 0.567, n 18), 95% CI -0.35 to +0.57. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: +0.15 (p 0.561, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: +0.14 (p 0.567, n 18). could be the mix.
skeptic
leave-one-out range +0.01 to +0.27, sign flips 0; without severely affected donors +0.14 (p 0.567, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for THRB in dopamine neurons.

case closed: nothing better to follow up.

Receipts

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