Proposed change
reason
Manual finding added to frontier state
finding type
epidemiological
proposed confidence
0.66
confidence basis
operator-supplied frontier prior; review required
frontiers / frontier
Reviewable change
back to reviewReimbursement decisions: CMS National Coverage Determination (April 2022) restricted aducanumab Medicare coverage to clinical trial enrollment only — a near-zero coverage outcome in practice — citing insufficient evidence of clinical benefit despite FDA approval. Biogen withdrew aducanumab from market Jan 2024.
This is a proposal, not yet accepted frontier state. It names what it would change and who proposed it. Only an accepted review event, signed under reviewer authority, writes it into the frontier. Until then it carries no authority over the record.
Proposed change
reason
Manual finding added to frontier state
finding type
epidemiological
proposed confidence
0.66
confidence basis
operator-supplied frontier prior; review required
Provenance
proposed by
reviewer:will-blair-bot
actor type
human
created at
2026-05-06
target type
finding
Affected finding
inspect finding →Reimbursement decisions: CMS National Coverage Determination (April 2022) restricted aducanumab Medicare coverage to clinical trial enrollment only — a near-zero coverage outcome in practice — citing insufficient evidence of clinical benefit despite FDA approval. Biogen withdrew aducanumab from market Jan 2024.
vf_6e3f22f4cb7f83a5The diff is computed against current frontier state, the same diff a reviewer reads before deciding.
The live diff is computed from a writable workspace. This frontier is read-only here, so the change is shown as recorded without a recomputed before / after.
Canopus treats material changes like reviewable requests: one bounded packet, check output, reviewer decision, and accepted frontier effect.
Anti-amyloid translation in Alzheimer's disease receives a reviewable source, finding, caveat, replication, evaluation, or proof-affecting edit.
The packet names affected record objects, evidence, rationale, reviewer-facing fields, and expected proof impact.
Schema, provenance, benchmark, contradiction, and proof checks decide whether the request is ready to read.
A steward accepts, rejects, caveats, revises, or retracts the request under an inspectable identity.
Only the accepted event mutates frontier state. Atlases, constellations, and search update from that record state.