Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Gene record

BMPR1A

bone morphogenetic protein receptor type 1A

translation score 0.51, read 2026-10-18; 1 sealed predictions, 0 held; 2 receipts.

Six readers

readerfoundscore
genetics
Open Targets
no genetic evidence; overall 0.20 from other evidence0.00
cell type
Human Protein Atlas
expressed broadly, no clear home in brain cells0.40
chemistry
Open Targets
a small-molecule pocket: eptotermin alfa, dibotermin alfa0.60
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
1 pathway; mostly growth signalling0.60

No case: the score is under the bar. Receipt 2023

Sealed predictions

  1. BMPR1A in dopamine neurons, braak+0.21 (p 0.581) → +0.42 (p 0.266)receipt 2030

Swarm cases

receipt 2030: BMPR1A in dopamine neurons, braak

power
full sample +0.32 (p 0.191, n 18), 95% CI -0.17 to +0.69. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: +0.33 (p 0.182, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: +0.27 (p 0.285, n 18). could be the mix.
skeptic
leave-one-out range +0.21 to +0.47, sign flips 0; without severely affected donors +0.32 (p 0.191, n 18). fragile.
cell type
strongest in OPCs: +0.60 (p 0.0089, n 18) vs +0.32 in dopamine neurons. proposing OPCs.
axis
no measure beats "tracks Braak Lewy-body stage" for BMPR1A in dopamine neurons.

follow-up registered; not confirmed in substantia nigra, an independent cohort.
follow-up BMPR1A · OPCs · braak: substantia nigra, an independent cohort (Parkinson's or LBD vs controls) -0.05 p 0.859 (needs p < 7.5e-4)

Receipts

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