Sources & methodology

Primary data sources

• ClinicalTrials.gov API v2 — live trial search (Phase 1).
• NCI PDQ — primary references for cancer knowledge pages.
• FDA Oncology Center of Excellence / public approval pages — updates seed + Phase 2 adapter.
• NCBI PubMed — literature entry points; weekly topic sync in Phase 2.

Editorial policy

• No invented trials, survival rates, algorithms, or IHC predictions.
• Patient and professional content are visually separated.
• Source facts vs expert interpretation are labeled; interpretations need review.
• No copying of proprietary guidelines without permission.
• No implied endorsement by NCI, FDA, or other agencies.

Update methodology

Phase 1: curated source-linked entries with published dates and retrieval context. Phase 2: Cloudflare Workers Cron for FDA (daily), NCI change checks, PubMed (weekly), and optional trials cache warm — preserving last valid cache on failure and marking stale data. See docs/PHASE2_PLAN.md.