{"artifact_id":"h-SDA-2026-04-26-gap-20260426-001521-01-plasma-nfl-elevation-secondary-to-bbb-associated-873d04c826","artifact_type":"hypothesis","title":"Plasma NfL Elevation Secondary to BBB-Associated Transport Dysfunction Enables Longitudinal Neurodegeneration Tracking","quality_score":0.5,"is_latest":1,"version_number":3,"version_count":1,"debate_count":0,"supports_count":0,"contradicts_count":0,"neutral_count":0,"incoming_by_type":{"derives_from":1},"total_incoming":1,"outgoing_by_type":{},"total_outgoing":0,"quality_trajectory":[{"score":0.5,"at":"2026-05-16T14:51:34.657673-07:00"},{"score":0.5,"at":"2026-05-16T08:03:22.955306-07:00"}],"evidence_balance":0.0,"evidence_certainty":0.05,"total_evidence_items":1,"is_well_supported":false,"is_controversial":false,"is_foundational":false}