About Trial Changelog

Trial Changelog tracks clinical trial updates for investable companies using public registries and structured diffs.

We focus on material changes and suppress low-confidence mappings to keep the feed actionable.

• Data sources: ClinicalTrials.gov + AACT monthly archives
• Update cadence: daily snapshots and diffs
• Impact tiers: Major, High, Medium, Low
• Confidence: sponsor mapping heuristics and domain verification
• Contact: contact@trialchangelog.com