Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Gene record

P2RY1

purinergic receptor P2Y1

translation score 0.56, read 2026-10-27; 2 sealed predictions, 0 held; 2 receipts.

Six readers

readerfoundscore
genetics
Open Targets
no genetic evidence; overall 0.01 from other evidence0.00
cell type
Human Protein Atlas
cell type enhanced, including astrocytes; strongest in platelets0.75
chemistry
Open Targets
compounds already reach it: diquafosol, diquafosol tetrasodium0.90
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 other0.30
proposal for P2RY1, translation score 0.56

Knock down and overexpress P2RY1 in astrocytes; measure a transcriptome-wide state shift (bulk RNA-seq) and α-synuclein uptake and degradation, and dopamine neuron survival in co-culture.

Cell type
astrocytes
Direction
Both arms: public data does not say which way helps.
Molecular readout
a transcriptome-wide state shift (bulk RNA-seq)
Functional readout
α-synuclein uptake and degradation, and dopamine neuron survival in co-culture
Rule-out
If neither arm moves a transcriptome-wide state shift (bulk RNA-seq) 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 P2RY1 in iPSC-derived midbrain astrocytes; n = 3 differentiations; readouts: a transcriptome-wide state shift (bulk RNA-seq); α-synuclein uptake and degradation, and dopamine neuron survival in co-culture. Controls: non-targeting guide, empty vector. About 8 to 10 weeks, most of it differentiation.

Sealed predictions

  1. P2RY1 in dopamine neurons, braak-0.26 (p 0.498) → -0.05 (p 0.893)receipt 11436
  2. P2RY1 in astrocytes, braak+0.05 (p 0.894) → -0.30 (p 0.441)receipt 11435

Swarm cases

receipt 11436: P2RY1 in dopamine neurons, braak

power
full sample -0.07 (p 0.794, n 18), 95% CI -0.52 to +0.41. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.06 (p 0.827, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.12 (p 0.633, n 18). could be the mix.
skeptic
leave-one-out range -0.19 to +0.05, sign flips 4; without severely affected donors -0.07 (p 0.794, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for P2RY1 in dopamine neurons.

case closed: nothing better to follow up.

receipt 11435: P2RY1 in astrocytes, braak

power
full sample -0.10 (p 0.696, n 18), 95% CI -0.54 to +0.39. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.09 (p 0.715, n 18). does not hold up.
composition
astrocytes share of nuclei vs axis -0.21 (p 0.413); controlling for it: +0.01 (p 0.969, n 18). could be the mix.
skeptic
leave-one-out range -0.26 to +0.03, sign flips 1; without severely affected donors -0.10 (p 0.696, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for P2RY1 in astrocytes.

case closed: nothing better to follow up.

Receipts

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