Six readers
| reader | found | score |
|---|---|---|
| genetics Open Targets | no genetic evidence; overall 0.07 from other evidence | 0.00 |
| cell type Human Protein Atlas | cell type enhanced in brain inhibitory neurons (102 nCPM) | 1.00 |
| chemistry Open Targets | compounds already reach it: pentoxifylline, dipyridamole | 1.00 |
| trials ClinicalTrials.gov | 1 Parkinson's trial, 0 stopped | 1.00 |
| literature PubMed | 3 Parkinson's papers of 121 | 0.82 |
| pathways Reactome | 3 pathways; mostly other | 0.30 |
Knock down and overexpress PDE1B in dopamine neurons; measure a transcriptome-wide state shift (bulk RNA-seq) and survival of TH-positive neurons and phospho-α-synuclein (pS129) inclusions after seeding with α-synuclein fibrils.
- Cell type
- dopamine neurons
- 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
- survival of TH-positive neurons and phospho-α-synuclein (pS129) inclusions after seeding with α-synuclein fibrils
- 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 PDE1B in iPSC-derived midbrain dopamine neurons (FOXA2+, LMX1A+, TH+); n = 3 differentiations; readouts: a transcriptome-wide state shift (bulk RNA-seq); survival of TH-positive neurons and phospho-α-synuclein (pS129) inclusions after seeding with α-synuclein fibrils. Controls: non-targeting guide, empty vector. About 8 to 10 weeks, most of it differentiation.
Sealed predictions
- PDE1B in dopamine neurons, braak-0.11 (p 0.784) → +0.23 (p 0.560)receipt 3651
Swarm cases
receipt 3651: PDE1B in dopamine neurons, braak
- power
- full sample -0.06 (p 0.827, n 18), 95% CI -0.51 to +0.42. the interval is wide: not enough donors to tell.
- confounder
- adjusted for sex: -0.06 (p 0.800, n 18). does not hold up.
- composition
- dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.09 (p 0.722, n 18). could be the mix.
- skeptic
- leave-one-out range -0.21 to +0.03, sign flips 5; without severely affected donors -0.06 (p 0.827, n 18). fragile.
- cell type
- no other cell group does better.
- axis
- no measure beats "tracks Braak Lewy-body stage" for PDE1B in dopamine neurons.
case closed: nothing better to follow up.
Receipts
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