Therapeutic Target: Mutant SOD1 (superoxide dismutase 1) — toxic gain-of-function mutations
Modality: Antisense oligonucleotides (ASOs) / RNAi-mediated gene silencing
Delivery: Intrathecal ASO delivery, AAV-delivered shRNA
| Disease | Coverage Score | Rationale |
|---|---|---|
| ALS | 10/10 | Primary indication — ~20% of familial ALS driven by SOD1 mutations |
| FTD | 4/10 | Secondary — SOD1 pathology present in some FTD subtypes |
| AD | 2/10 | Minimal — Aβ toxicity unrelated to SOD1 |
| PD | 2/10 | Minimal — no established SOD1 link |
| Aging | 5/10 | Moderate — SOD1 aggregation associated with age-related proteostasis decline |
Total Score: 72/100
| Dimension | Score | Rationale |
|---|---|---|
| Novelty | 8/10 | Established target (SOD1) but novel delivery modality — blood-brain barrier-crossing ASOs |
| Mechanistic Rationale | 9/10 | Strong — mutant SOD1 causes toxic gain-of-function, aggregation, mitochondrial dysfunction |
| Root-Cause Coverage | 9/10 | High — directly targets genetic cause in SOD1-ALS |
| Delivery Feasibility | 7/10 | Moderate — intrathecal delivery established (Spinraza), but AAV-CNS penetration variable |
| Safety Plausibility | 7/10 | Moderate — off-target effects possible, but ASO chemistry well-characterized |
| Combinability | 8/10 | High — combines with Riluzole, edaravone, mitochondrial protectors |
| Biomarker Availability | 8/10 | High — NfL as enrollment/response biomarker, CSF SOD1 levels as engagement marker |
| De-risking Path | 8/10 | Strong — established ASO platform, clear regulatory precedent (Spinraza) |
| Multi-disease Potential | 4/10 | Limited — primarily ALS-specific, some FTD overlap |
| Patient Impact | 9/10 | High — addresses fatal genetic subtype with no current disease-modifying therapy |