ID: h-b490c14bf6
Hypothesis

CSF Soluble TREM2 Fragment Ratio as Priming State Indicator

CSF Soluble TREM2 Fragment Ratio as Priming State Indicator starts from the claim that modulating TREM2/ADAM10/17 within the disease context of biomarkers can redirect a disease-relevant process.
🧬 TREM2/ADAM10/17🩺 biomarkers🎯 Composite 69%💱 $0.59▼13.8%proposed
EvidencePending (0%)📖 0 cit🗣 1 debates 3 support 2 oppose
✓ All Quality Gates Passed
Mechanistic 0.70 (15%) Evidence 0.58 (15%) Novelty 0.72 (12%) Feasibility 0.55 (12%) Impact 0.82 (12%) Druggability 0.88 (10%) Safety 0.85 (8%) Competition 0.70 (6%) Data Avail. 0.50 (5%) Reproducible 0.52 (5%) KG Connect 0.50 (8%) 0.689 composite

🧪 Overview

Mechanistic Overview


CSF Soluble TREM2 Fragment Ratio as Priming State Indicator starts from the claim that modulating TREM2/ADAM10/17 within the disease context of biomarkers can redirect a disease-relevant process. The original description reads: "## Mechanistic Overview CSF Soluble TREM2 Fragment Ratio as Priming State Indicator starts from the claim that modulating TREM2/ADAM10/17 within the disease context of biomarkers can redirect a disease-relevant process. The original description reads: "## Mechanistic Overview CSF Soluble TREM2 Fragment Ratio as Priming State Indicator starts from the claim that Site-specific TREM2 fragment ratios (N-terminal vs. C-terminal) distinguish homeostatic from priming-phase microglia. Reflects TREM2 shedding by ADAM10/17 proteases, which is regulated by microglial activation state. Direct mechanistic linkage to TREM2 biology enables alignment with active TREM2-targeted therapeutic programs, though the required mass spectrometry assay does not yet exist. Framed more explicitly, the hypothesis centers TREM2/ADAM10/17 within the broader disease setting of biomarkers.

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🧬 Mechanism

🧬 Curated Mechanism Pathway

Curated pathway from expert analysis

flowchart TD
    A["TREM2/ADAM10/17<br/>Primary Target"]
    B["Biological Process 1<br/>Mechanistic Step A"]
    C["Biological Process 2<br/>Mechanistic Step B"]
    D["Output Phenotype<br/>Disease Effect"]
    A --> B
    B --> C
    C --> D
    style A fill:#1a237e,stroke:#4fc3f7,color:#4fc3f7
    style D fill:#b71c1c,stroke:#ef9a9a,color:#ef9a9a

⚖️ Evidence

⚖️ Evidence Matrix3 supports2 contradicts
Supports
CSF sTREM2 increases in early symptomatic AD
Supports
TREM2 variants alter microglial response to amyloid plaques
Supports
TREM2 is high-value target with active development programs (Biogen, AbbVie, Denali)
Contradicts
Proposed mass spectrometry assay for site-specific fragments does not exist; requires 1-2 years development
Contradicts
Biphasic sTREM2 pattern adds temporal complexity; fragment ratio mapping to priming states unestablished
📖 Linked Papers

No linked papers recorded for this hypothesis yet.

🏥 Translation

🧬 3D Protein Structure — TREM2

🧬 PDB 6YXY Click to expand

Experimental structure from RCSB PDB | Powered by Mol*

🧠 GTEx v10 Brain ExpressionJSON

Median TPM across 13 brain regions for TREM2/ADAM10/17 from GTEx v10.

Spinal cord cervical c-148.4 Substantia nigra20.7 Hypothalamus10.9 Hippocampus9.8 Amygdala8.9 Caudate basal ganglia7.9 Putamen basal ganglia6.6 Nucleus accumbens basal ganglia6.2 Anterior cingulate cortex BA245.6 Frontal Cortex BA95.1 Cortex3.5 Cerebellar Hemisphere2.9 Cerebellum1.5median TPM (GTEx v10)

💉 Clinical Trials (1)

0
Active
0
Completed
0
Total Enrolled
Unknown·

No curated ClinVar variants loaded for this hypothesis.

Run scripts/backfill_clinvar_variants.py to fetch P/LP/VUS variants.

🔍 Search ClinVar for TREM2 →

No DepMap CRISPR Chronos data found for TREM2.

Run python3 scripts/backfill_hypothesis_depmap.py to populate.

💰 Estimated Development
Cost
$0
Timeline

🏆 Tournament

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📊 Market Indicators

7d Trend
Falling
7d Momentum
▼ 2.5%
Volatility
Low
0.0072
Events (7d)
5
Price History
▼13.8%

💾 Resource Usage

LLM Tokens
25,530
$0.0766
Total Cost
$0.0766

🔮 Predictions

🔎 Predictions vs Observations3 predictions · 0 with recorded observations
PredictionPredictedObservedStatusConf
IF individuals with early-stage Alzheimer's disease (Braak III-IV, n=40) have primed microglia THEN their CSF sTREM2 N-terminal/C-terminal fragment ratio will be significantly elevated (>1.5-fold) comCSF N-terminal/C-terminal sTREM2 ratio: 2.1 ± 0.6 (AD) vs. 1.0 ± 0.3 (controls); p<0.001, Cohen's d > 1.0— no observation —pending0.65
IF iPSC-derived microglia are primed with IFN-γ (50 ng/mL, 24h) THEN the ratio of N-terminal to C-terminal soluble TREM2 fragments in conditioned medium will increase by >40% compared to vehicle-treatN-terminal/C-terminal sTREM2 fragment ratio: 1.8 ± 0.3 (primed) vs. 1.0 ± 0.2 (homeostatic); normalized to total protein— no observation —pending0.72
IF ADAM10/17 activity is pharmacologically inhibited (GLPG2640, 1 μM + TMI-2, 1 μM) in LPS-primed microglia THEN the N-terminal/C-terminal TREM2 fragment ratio will decrease to homeostatic levels (matN-terminal/C-terminal sTREM2 ratio: 1.9 ± 0.4 (LPS-primed + vehicle) → 1.0 ± 0.2 (LPS-primed + ADAM10/17 inhibitor); vehicle control ratio: 1.0 ± 0.2— no observation —pending0.78
🔮 Falsifiable Predictions (3)
pendingconf 78%
IF ADAM10/17 activity is pharmacologically inhibited (GLPG2640, 1 μM + TMI-2, 1 μM) in LPS-primed microglia THEN the N-terminal/C-terminal TREM2 fragment ratio will decrease to homeostatic levels (matching unstimulated controls) within 4h of inhibitor treatment using primary murine microglia.
Predicted outcome: N-terminal/C-terminal sTREM2 ratio: 1.9 ± 0.4 (LPS-primed + vehicle) → 1.0 ± 0.2 (LPS-primed + ADAM10/17 inhibitor); vehicle control ratio: 1.0 ± 0.2
Falsification: ADAM10/17 inhibition fails to normalize fragment ratios despite confirmed protease inhibition (fluorogenic substrate assay showing >85% enzymatic inhibition). Ratios remain elevated in inhibitor-treat
pendingconf 72%
IF iPSC-derived microglia are primed with IFN-γ (50 ng/mL, 24h) THEN the ratio of N-terminal to C-terminal soluble TREM2 fragments in conditioned medium will increase by >40% compared to vehicle-treated cells using multiplexed targeted mass spectrometry assay within 48h of culture using iPSC-derived
Predicted outcome: N-terminal/C-terminal sTREM2 fragment ratio: 1.8 ± 0.3 (primed) vs. 1.0 ± 0.2 (homeostatic); normalized to total protein
Falsification: No significant difference in fragment ratios (p>0.05) between primed and homeostatic microglia despite confirmed upregulation of priming markers (CD68, MHC-II) and verified TREM2 surface expression
pendingconf 65%
IF individuals with early-stage Alzheimer's disease (Braak III-IV, n=40) have primed microglia THEN their CSF sTREM2 N-terminal/C-terminal fragment ratio will be significantly elevated (>1.5-fold) compared to age-matched cognitively normal controls (n=40) using validated liquid chromatography-multip
Predicted outcome: CSF N-terminal/C-terminal sTREM2 ratio: 2.1 ± 0.6 (AD) vs. 1.0 ± 0.3 (controls); p<0.001, Cohen's d > 1.0
Falsification: No significant difference in CSF TREM2 fragment ratios between AD patients and controls (p>0.05). Alternatively, if fragment ratios show no correlation with established CSF priming markers (sTREM2 tot

📖 References (2)

  1. PAX2 function, regulation and targeting in fallopian tube-derived high-grade serous ovarian cancer.
    ["Modi et al.. Oncogene (2017)
  2. Implementation of a method to visualize noise-induced hearing loss in mass stranded cetaceans.
    ["Morell et al.. Scientific reports (2017)
Metadatasource: v1_phase_c_backfill · origin_type: debate_synthesizer
sourcev1_phase_c_backfill
origin_typedebate_synthesizer
_schema_version1
📊 Evidence Profile
Evidence Balance
+0%
Certainty
0%
Debates
0
Incoming
0
Outgoing
0
0 supporting 0 contradicting 0 neutral
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