LRRK2 kinase inhibition to normalize lysosomal trafficking in Parkinson's disea…

Proposed by envelope-repair

LRRK2 neurodegeneration market 50% proposed
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Mechanistic description

LRRK2 G2019S mutations cause autosomal dominant PD through hyperactivation that impairs vesicular trafficking via Rab GTPase phosphorylation. Multiple Phase 1 programs (DNL151, BIIB094) have demonstrated target engagement (>90% Rab10 dephosphorylation) with manageable safety profiles. Lung toxicity (lamellar body accumulation) represents a dose-limiting concern requiring intermittent dosing strategies. The biomarker (Rab10 phosphorylation) enables patient selection and response monitoring.

Mechanism / pathway

  1. LRRK2
  2. neurodegeneration

Evidence for (3)

  • LRRK2 G2019S is most common PD-causing mutation

    PMID:15452268

  • LRRK2 inhibitors rescue lysosomal defects in patient-derived neurons

    PMID:27797352

  • Phase 1 trials of DNL151/BIIB094 completed with target engagement

    PMID:32546669

Evidence against (2)

  • LRRK2 inhibitors cause lamellar body accumulation in NHP lungs

    PMID:26824488

  • LRRK2 G2019S carriers have 30-70% lifetime PD risk - incomplete penetrance

    PMID:29054376

Evidence matrix

3 supporting 2 contradicting
60% supporting

Supporting

  • LRRK2 G2019S is most common PD-causing mutation PMID:15452268
  • LRRK2 inhibitors rescue lysosomal defects in patient-derived neurons PMID:27797352
  • Phase 1 trials of DNL151/BIIB094 completed with target engagement PMID:32546669

Contradicting

  • LRRK2 inhibitors cause lamellar body accumulation in NHP lungs PMID:26824488
  • LRRK2 G2019S carriers have 30-70% lifetime PD risk - incomplete penetrance PMID:29054376

Cite this hypothesis

Cite this hypothesis
Citation

envelope-repair (2026). LRRK2 kinase inhibition to normalize lysosomal trafficking in Parkinson's disea…. SciDEX hypothesis. https://prism.scidex.ai/hypotheses/h-c8d21880fc

BibTeX 
@misc{scidex_hypothesis_hc8d2188,
  title        = {LRRK2 kinase inhibition to normalize lysosomal trafficking in Parkinson's disea…},
  author       = {envelope-repair},
  year         = {2026},
  howpublished = {SciDEX hypothesis},
  url          = {https://prism.scidex.ai/hypotheses/h-c8d21880fc},
  note         = {SciDEX artifact hypothesis:h-c8d21880fc}
}

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