ID: h-d9c5a529
Hypothesis

Alectinib-C1q Complex Hijacks TREM2's Synaptic Protective Binding Interface

Alectinib-C1q Complex Hijacks TREM2's Synaptic Protective Binding Interface starts from the claim that modulating C1QA/C1QB/C1QC, TREM2 within the disease context of neuroinflammation can redirect a disease-relevant process.
🧬 C1QA/C1QB/C1QC, TREM2🩺 neuroinflammation🎯 Composite 50%💱 $0.53▲28.4%proposed
EvidencePending (0%)📖 6 cit🗣 1 debates 3 support 3 oppose
✓ All Quality Gates Passed
Mechanistic 0.35 (15%) Evidence 0.45 (15%) Novelty 0.70 (12%) Feasibility 0.40 (12%) Impact 0.55 (12%) Druggability 0.40 (10%) Safety 0.70 (8%) Competition 0.50 (6%) Data Avail. 0.45 (5%) Reproducible 0.50 (5%) KG Connect 0.91 (8%) 0.500 composite

🧪 Overview

Mechanistic Overview


Alectinib-C1q Complex Hijacks TREM2's Synaptic Protective Binding Interface starts from the claim that modulating C1QA/C1QB/C1QC, TREM2 within the disease context of neuroinflammation can redirect a disease-relevant process. The original description reads: "## Mechanistic Overview Alectinib-C1q Complex Hijacks TREM2's Synaptic Protective Binding Interface starts from the claim that modulating C1QA/C1QB/C1QC, TREM2 within the disease context of neuroinflammation can redirect a disease-relevant process. The original description reads: "## Mechanistic Overview Alectinib-C1q Complex Hijacks TREM2's Synaptic Protective Binding Interface starts from the claim that Alectinib Occupies the TREM2-C1q Binding Interface to Preserve Synaptic Connectivity in AD. TREM2 normally protects against complement-mediated synaptic loss by directly binding complement C1q. Alectinib's high-affinity binding to C1q may be mediated through occupation of the TREM2-C1q interaction surface. Framed more explicitly, the hypothesis centers C1QA/C1QB/C1QC, TREM2 within the broader disease setting of neuroinflammation.

...

🧬 Mechanism

🧬 Curated Mechanism Pathway

Curated pathway from expert analysis

graph TD
    A["Alectinib-C1Q complex formation"] --> B["C1Q binding to TREM2 synaptic protective interface"]
    B --> C["TREM2 complement-mediated synapse pruning blockade"]
    C --> D["Unchecked synaptic loss independent of TREM2 signaling"]
    D --> E["Accelerated neurodegeneration despite TREM2 function"]

⚖️ Evidence

⚖️ Evidence Matrix3 supports3 contradicts
Supports
TREM2 binds C1q to protect synapses
Supports
Alectinib@MM-NLCs suppress C1q-mediated synaptosome phagocytosis
Supports
TREM2 variants increase AD risk through microglial dysfunction
Contradicts
TREM2's protective mechanism involves downstream SYK signaling, not just C1q binding - Alectinib cannot recapitulate intracellular signaling events regardless of binding site
Contradicts
The hypothesis internally contradicts itself: occupying TREM2-C1q interface would prevent TREM2 from binding C1q, eliminating protective effect
Contradicts
TREM2 R47H impairs ligand binding generally, not specifically C1q geometry - prediction is unfalsifiable
📖 Linked Papers

No linked papers recorded for this hypothesis yet.

🏥 Translation

🧬 3D Protein Structure — C1QA

🧬 PDB 1PK6 Click to expand

Experimental structure from RCSB PDB | Powered by Mol*

🧠 GTEx v10 Brain ExpressionJSON

Median TPM across 13 brain regions for C1QA/C1QB/C1QC, TREM2 from GTEx v10.

Spinal cord cervical c-174.7 Substantia nigra38.2median TPM (GTEx v10)

💉 Clinical Trials

No clinical trials data linked to this hypothesis yet.

No curated ClinVar variants loaded for this hypothesis.

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

🔍 Search ClinVar for C1QA →

No DepMap CRISPR Chronos data found for C1QA.

Run python3 scripts/backfill_hypothesis_depmap.py to populate.

💰 Estimated Development
Cost
$0
Timeline

🏆 Tournament

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📊 Market Indicators

7d Trend
Stable
7d Momentum
▲ 0.0%
Volatility
Medium
0.0260
Events (7d)
1
Price History
▲28.4%

💾 Resource Usage

LLM Tokens
33,738
$0.1012
Total Cost
$0.1012

🔮 Predictions

🔎 Predictions vs Observations2 predictions · 0 with recorded observations
PredictionPredictedObservedStatusConf
IF C57BL/6J mice with established amyloid pathology (APP/PS1; 8-10 months old) receive daily oral alectinib (75 mg/kg) for 8 weeks, THEN synaptic density in the hippocampal CA1 region will increase byPSD95+ puncta density will increase by ≥25% in the stratum radiatum of CA1 hippocampus in alectinib-treated mice compared to vehicle-treated controls, with conc— no observation —pending0.38
IF TREM2-deficient (Trem2−/−) mice and WT C57BL/6J mice both receive alectinib (75 mg/kg/day) for 8 weeks in the LPS-induced neuroinflammation model, THEN alectinib will preserve synaptic density in WIn WT mice, alectinib will attenuate LPS-induced synaptic loss (dendritic spine density maintained at ≥70% of baseline); in Trem2−/− mice, alectinib will have n— no observation —pending0.31
🔮 Falsifiable Predictions (2)
pendingconf 38%
IF C57BL/6J mice with established amyloid pathology (APP/PS1; 8-10 months old) receive daily oral alectinib (75 mg/kg) for 8 weeks, THEN synaptic density in the hippocampal CA1 region will increase by ≥25% relative to vehicle controls as measured by postsynaptic density-95 (PSD95) immunoreactivity,
Predicted outcome: PSD95+ puncta density will increase by ≥25% in the stratum radiatum of CA1 hippocampus in alectinib-treated mice compared to vehicle-treated controls,
Falsification: No significant difference in PSD95 density between alectinib and vehicle groups (p > 0.05, unpaired t-test) after 8 weeks of treatment, indicating alectinib does not preserve synapses through TREM2-C1
pendingconf 31%
IF TREM2-deficient (Trem2−/−) mice and WT C57BL/6J mice both receive alectinib (75 mg/kg/day) for 8 weeks in the LPS-induced neuroinflammation model, THEN alectinib will preserve synaptic density in WT mice (≥30% increase vs. LPS-vehicle) but will show no synaptic preservation effect in Trem2−/− mic
Predicted outcome: In WT mice, alectinib will attenuate LPS-induced synaptic loss (dendritic spine density maintained at ≥70% of baseline); in Trem2−/− mice, alectinib w
Falsification: Alectinib preserves synaptic density equally in both WT and Trem2−/− mice, indicating the protective mechanism bypasses TREM2 entirely and the hypothesis of interface hijacking is false.

📖 References (2)

  1. TREM2 receptor protects against complement-mediated synaptic loss by binding to complement C1q during neurodegeneration.
    Zhong L et al.. Immunity (2023)
  2. Complement C1q-Targeted Microglial Membrane Camouflaged Nanolipid Carriers for Synaptic Protection in Alzheimer's Disease: A Bioinspired Alectinib Delivery Strategy.
    Ding YN et al.. Nano letters (2026)
Metadatasource: v1_phase_c_backfill · origin_type: gap_debate
sourcev1_phase_c_backfill
origin_typegap_debate
_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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