Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Gene record

SH3GL2

SH3 domain containing GRB2 like 2, endophilin A1

translation score 0.82, read 2026-10-27; 3 sealed predictions, 0 held; 2 receipts.

Six readers

readerfoundscore
genetics
Open Targets
genetic association 0.88 (overall 0.54)0.88
cell type
Human Protein Atlas
cell type enhanced in brain excitatory neurons (550 nCPM)1.00
chemistry
Open Targets
reachable by antibody0.45
trials
ClinicalTrials.gov
no Parkinson's trials on record: an open field1.00
literature
PubMed
19 Parkinson's papers of 940.61
pathways
Reactome
10 pathways; mostly vesicle traffic1.00
proposal for SH3GL2, translation score 0.82

Knock down and overexpress SH3GL2 in dopamine neurons; measure LRRK2 kinase activity (pT73-Rab10) and lysosome position 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.
Molecular readout
LRRK2 kinase activity (pT73-Rab10) and lysosome position
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 LRRK2 kinase activity (pT73-Rab10) 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 SH3GL2 in iPSC-derived midbrain dopamine neurons (FOXA2+, LMX1A+, TH+); n = 3 differentiations; readouts: LRRK2 kinase activity (pT73-Rab10) and lysosome position; 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.

Earlier readings: 2026-10-26 0.82; 2026-10-25 0.82; 2026-10-24 0.82; 2026-10-23 0.82.

Sealed predictions

  1. SH3GL2 in dopamine neurons, braak+0.29 (p 0.442) → -0.22 (p 0.565)receipt 0601
  2. SH3GL2 in dopamine neurons, resiliencen/a → n/afailed
  3. SH3GL2 in dopamine neurons, braakn/a → n/afailed

In the sealed studies

Swarm cases

receipt 0601: SH3GL2 in dopamine neurons, braak

power
full sample +0.04 (p 0.874, n 18), 95% CI -0.43 to +0.50. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: +0.02 (p 0.942, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: +0.00 (p 0.990, n 18). could be the mix.
skeptic
leave-one-out range -0.07 to +0.19, sign flips 4; without severely affected donors +0.04 (p 0.874, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for SH3GL2 in dopamine neurons.

case closed: nothing better to follow up.

Receipts

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