# Automatic weekly linkage of cancer registries to deaths, prescriptions and imaging

Source: https://onco.cc/ideas/idea-data-automatic-outcome-linkage/  
OnCo record `idea-data-automatic-outcome-linkage` (Idea). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

Connect the cancer registry to death records, pharmacy records and scan reports automatically every week, so we always know what happened to every patient without anyone filling in a form.

## Summary

Most registries capture diagnosis well and outcomes poorly, with follow-up lagging years. Nordic registries and England's National Disease Registration Service show that deterministic linkage to death, hospital episode, prescribing and imaging records makes near-complete outcome capture routine. The proposal funds automated pipelines with statutory access and weekly refresh in every registry country, plus derivation of progression proxies from imaging report text using validated NLP.

## Fields

- Kind: Idea
- Last checked: 2026-09-08
- Hypothesis: Weekly automated linkage reduces registry outcome latency from more than two years to under three months and raises treatment-outcome completeness above 95 percent.
- Rationale: Where linkage is statutory and automated (Denmark, Sweden, England), registries are the backbone of real-world evidence; elsewhere they are diagnosis counts. The difference is legal access and engineering, not science.
- Proposed test: In one registry without current linkage, build the pipeline and compare outcome completeness and latency before and after over two years; validate NLP-derived progression against chart review in 1,000 patients.
- Maturity: being-tested-at-scale
- Actor: data

## Sources

- NHS National Disease Registration Service: https://digital.nhs.uk/ndrs

## Connected records

- collections: [SEER (Surveillance, Epidemiology, and End Results)](https://onco.cc/collections/seer/)
- fronts: [AI & Computation](https://onco.cc/fronts/ai-computation/)
- terms: [Real-world evidence](https://onco.cc/terms/real-world-evidence/)
- bottlenecks: [Data silos](https://onco.cc/bottlenecks/b-data-silos/), [Weak real-world evidence and registries](https://onco.cc/bottlenecks/b-real-world-evidence/)

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