SMA Research Platform

Evidence graph for Spinal Muscular Atrophy

Biology-first target discovery
Christian Fischer / Bryzant Labs
14,766Targets
453Trials
84Drugs
7Datasets
6,987Sources
64,683Claims
72,052Evidence
29,649Hypotheses

NMJ-Rescue · Platform Flagship

v2 LOCKED · 2026-05-06
Phase 2 · #5

The neuromuscular junction is the SMA platform's primary research focus.

SMN restoration is now standard of care, but a measurable phenotype gap remains in Type-2/3 patients on top of nusinersen / risdiplam / onasemnogene. The platform's job, in one sentence, is to find an SMN-independent intervention that rescues a measurable SMA phenotype in patient-derived iPSC motor-neuron / myotube co-culture, on top of standard of care, within a ≤ 14-day prediction-to-result loop. NMJ-rescue is the most testable lane for that mission.

Public commitment

The platform's first OSF-pre-registered prediction is the Q3-2026 NMJ ternary fold: DOK7 × MuSK × Agrin × LRP4. It settles on internal compute on 2026-08-04 and the result is published within 30 days regardless of outcome — confirmed, refuted, or null.

See the full pre-registration on osf.io/fxw5j and the full predictions board.

Flagship targets

GeneRole at the NMJUniProt
DOK7MuSK activatorQ18PE1
MUSKPostsynaptic kinaseO15146
AGRNPresynaptic ligandO00468
LRP4AGRN co-receptorO75096
RAPSNAChR clusteringQ13702
STMN2Axonal stabilityQ93045

60 / 40 compute reallocation

LaneShare of totalDetail
NMJ flagship35 %DOK7-MuSK-Agrin-LRP4-RAPSN ternary folds + STMN2 axonal partners
Splice / RNA-ligand ternary15 %SMN2 splice machinery + risdiplam-like ternary modes
General PPI saturator10 %Continued cross-axis scanning at lower priority
Compound discovery (left funnel)40 %GenMol · ADMET · DiffDock · MD · Boltz-ABFE
Total mechanism60 %Ramp to 70 % only if NMJ data justifies — no faith-allocation.

Producer queues are weighted accordingly: the Boltz-2 NIM saturator favors A1-NMJ targets in its rotation, and the daily AF3 pipeline allocates 18 / 6 / 6 of its 30 slots to NMJ / splice / general scanning.

Kill criterion

If the 4-model consensus (AF3 · Boltz-2 · Chai-1 · NPLexer-3) on the DOK7 × MuSK × Agrin × LRP4 ternary fold does not yield a CONFIRMED status (≥ 3 models agree, all iPTM ≥ 0.65, spread < 0.30) by 2026-08-04, the flagship is publicly retired and the next-ranked Top-10 axis is promoted in its place. No silent pivot.

Top-10 board
Ranked SMA interventions →
Each entry has its own kill criterion and required experiment.
Pre-registered predictions
3 quarterly OSF commitments →
NMJ + splice + muscle ternary, all settle 2026-08-04.
NMJ deep-dive
Retrograde signaling + chip models →
Muscle-to-nerve trophic axis, EV cargo, organ-on-chip TRL.
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