Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Gene record

PDE3B

phosphodiesterase 3B

translation score 0.57, read 2026-10-19; 2 sealed predictions, 0 held; 2 receipts.

Six readers

readerfoundscore
genetics
Open Targets
no genetic evidence; overall 0.08 from other evidence0.00
cell type
Human Protein Atlas
cell type enhanced, including microglia; strongest in adipocytes0.75
chemistry
Open Targets
compounds already reach it: dipyridamole, enoximone, anagrelide hydrochloride +81.00
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
2 pathways; mostly other0.30
proposal for PDE3B, translation score 0.57

Knock down and overexpress PDE3B in microglia; measure a transcriptome-wide state shift (bulk RNA-seq) and uptake and clearance of α-synuclein fibrils and NLRP3 inflammasome activation (IL-1β release).

Cell type
microglia
Direction
Both arms: public data does not say which way helps; existing compounds already reach the inhibition arm.
Molecular readout
a transcriptome-wide state shift (bulk RNA-seq)
Functional readout
uptake and clearance of α-synuclein fibrils and NLRP3 inflammasome activation (IL-1β release)
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 PDE3B in iPSC-derived microglia (iMGL); n = 3 differentiations; readouts: a transcriptome-wide state shift (bulk RNA-seq); uptake and clearance of α-synuclein fibrils and NLRP3 inflammasome activation (IL-1β release). Controls: non-targeting guide, empty vector. About 8 to 10 weeks, most of it differentiation.

Sealed predictions

  1. PDE3B in microglia, braak+0.04 (p 0.928) → +0.26 (p 0.507)receipt 3549
  2. PDE3B in dopamine neurons, braak+0.29 (p 0.457) → +0.14 (p 0.722)receipt 3550

Swarm cases

receipt 3550: PDE3B in dopamine neurons, braak

power
full sample +0.17 (p 0.493, n 18), 95% CI -0.32 to +0.59. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: +0.18 (p 0.465, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: +0.20 (p 0.434, n 18). could be the mix.
skeptic
leave-one-out range +0.06 to +0.30, sign flips 0; without severely affected donors +0.17 (p 0.493, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for PDE3B in dopamine neurons.

case closed: nothing better to follow up.

receipt 3549: PDE3B in microglia, braak

power
full sample +0.03 (p 0.922, n 18), 95% CI -0.45 to +0.49. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: +0.04 (p 0.888, n 18). does not hold up.
composition
microglia share of nuclei vs axis -0.11 (p 0.652); controlling for it: +0.06 (p 0.827, n 18). could be the mix.
skeptic
leave-one-out range -0.11 to +0.18, sign flips 7; without severely affected donors +0.03 (p 0.922, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for PDE3B in microglia.

case closed: nothing better to follow up.

Receipts

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