OnCo
bottlenecksBottleneck

Data silos

Records, scans, genomes and outcomes sit in separate systems that cannot talk. Every patient's experience is lost to the next.

The overwhelming majority of patients with cancer are treated outside trials, and what happens to them, their genomics, imaging, pathology, treatment, toxicity and outcome, is recorded in electronic records, laboratory systems, PACS archives and registries that are not linked and cannot be queried together. Trial data are shared rarely: after journals required data-sharing statements, individual patient data could actually be obtained for about 1% of the trials studied. Privacy law, consent models, vendor lock-in, unstructured free text, absent common data standards and the lack of any incentive to share mean that the largest source of evidence, routine care, teaches the system almost nothing, and that each institution's AI is trained on its own slice. Interoperability standards (FHIR, mCODE), federated learning, national health data spaces, and consented patient-controlled data are the technical and legal answers; the missing piece is an obligation to contribute.

criticaldata knowledge76 ideas to fix it
How big the problem is
~8%
Adults with cancer participating in treatment trials, and hence the share of patients whose outcomes systematically feed evidence
6 of 487 (about 1%)
Trials with ICMJE data-sharing statements whose individual participant data could actually be obtained by requesters
Root causes
  • Electronic health records are optimised for billing and documentation, not for structured clinical data capture.
  • Vendors and institutions treat data as a proprietary asset.
  • Privacy law and ethics review make linkage across institutions slow and expensive.
  • Key variables (stage, response, progression, toxicity) are recorded in free text or not at all.
  • There is no reward, and often a penalty, for sharing data.
What is already being tried
  • AACR Project GENIE pools clinical-grade sequencing and outcomes from more than a dozen cancer centres for open use.
  • mCODE (Minimal Common Oncology Data Elements) and HL7 FHIR define a common structured oncology data model, now adopted in US regulation for interoperability.
  • The European Health Data Space Regulation (2025) creates a legal basis for secondary use of health data across the EU, and Health Data Research UK links NHS datasets for research.
  • The NCI Genomic Data Commons, cBioPortal and CPTAC make research-grade genomic and proteomic data openly available.
  • Owkin, Tempus, BostonGene and Flatiron apply federated learning or curated real-world datasets across institutions.
  • Patient-controlled data initiatives (Cancer Commons, Patient Data Vault, Count Me In at the Broad Institute) let patients share their own records for research.
What breaking it looks like
Structured treatment and outcome data are captured for every patient with cancer and linkable across institutions under a standard consent, and a researcher or regulator can answer a comparative effectiveness question in weeks from routine data with results that match randomised trials.

Ideas to fix it

76top
speculativepatientsmedium cost
A cancer data donor card: patient-controlled donation of records for research

Like an organ donor card, anyone with cancer could sign once to let their medical records and leftover samples be used for research, and change their mind at any time.

speculativeresearchsmall cost
A common consent and material transfer template for tumour biobanks

Every biobank negotiates its own legal agreement for sharing tissue, which takes months. A shared standard template, like Creative Commons for samples, would let tissue and data move in days.

speculativeresearchmedium cost
A consented commons of surgical video linked to pathology and outcomes

Record cancer operations (with consent), link each video to the pathology report and the patient's recovery, and open the collection to researchers to learn what surgical technique actually works.

early clinicalengineeringmedium cost
A federated learning consortium of cancer centres that jointly own the models

Hospitals could train shared AI models on all their patients' scans and records without any data leaving the building, and jointly own the results, if someone built and governed the network.

early clinicaldatalarge cost
A global federated real-world evidence network at regulatory grade

Connect hospital records across countries so that questions about how treatments work in real patients can be answered in weeks without moving the data, to a standard regulators accept.

speculativedatasmall cost
A global medical isotope supply observatory with forecasts and shortage alerts

Nobody publishes how much cancer isotope is made, where, or when supply will fall short. A public observatory would let hospitals and investors plan.

early clinicalphilanthropylarge cost
A global rapid tissue donation network for metastatic disease

Almost all cancer deaths are caused by spread, yet very little spread tissue is ever studied. A network collecting donated tissue within hours of death would change that.

speculativeengineeringmedium cost
A live 'seats available' feed for trial slots, like airline inventory

Trial registries say a study is 'recruiting' long after it stopped, and never say whether a slot is actually open this week. A live feed of open slots per arm and site would let clinicians refer with confidence.

early clinicaldatasmall cost
A live national dashboard of stage at diagnosis as the scorecard for early detection

You cannot manage what you do not measure quickly. Publishing stage at diagnosis by cancer and region every quarter, not years later, would show whether detection efforts are working.

speculativedatasmall cost
A live stock-out map for essential chemotherapy drugs

Hospitals in poorer countries often run out of basic, cheap chemotherapy for weeks. A shared live map of stock levels would let buyers and donors act before a child's treatment is interrupted.

early clinicaldatamedium cost
A machine-readable treatment summary handed to every patient and readable by any hospital

Patients moving between hospitals often carry paper folders or nothing. A standard electronic summary of diagnosis, treatments, and doses that any system can read would stop repeated tests and dangerous gaps.

early clinicalpolicylarge cost
A national cancer data space with one legal front door

Instead of asking twenty hospitals for permission, a researcher would apply once to a single national body that can grant access to all cancer records under one set of rules.

early clinicaldatamedium cost
A national late-effects registry linking treatment exposures to outcomes decades later

We know surprisingly little about what happens to cancer survivors twenty years on. Linking their treatment records to later health records would show which treatments cause which problems and who needs watching.

early clinicalclinicmedium cost
A national repository of radiotherapy dose plans linked to outcomes

Radiotherapy machines record exactly how much dose every organ received, but the data are thrown away. Collect them and link to toxicities and cures to learn the safest, most effective doses.

early clinicalpatientsmedium cost
A patient-held cancer record that travels across providers and borders

Patients would carry their full cancer history, scans and test results in a standard digital bundle they control and can hand to any doctor anywhere.

early clinicaldatamedium cost
A patient-owned, portable complete cancer record in a standard format

Your entire cancer history, including scans, pathology, genomics and treatments, lives in a record you control and can share in one click with any hospital, trial or second-opinion service.

speculativeindustrylarge cost
A pre-competitive consortium to train a shared multimodal cancer foundation model

Companies, hospitals and funders pool effort to train one very large AI on scans, slides, genomes and outcomes from millions of patients, kept at their hospitals, and share the resulting model.

preclinical evidencephilanthropylarge cost
A public atlas of drug-pair responses across a thousand patient-derived organoids

Build a large, openly shared dataset of how tumour organoids respond to drug pairs, so that anyone can look up which combinations might work for which tumour type.

speculativedatasmall cost
A public map of trial deserts to steer where new sites open

Combine cancer incidence with the location of open trials to show which regions have many patients but no trial within an hour's drive. Sponsors and funders would use it to decide where to put sites.

early clinicaldatamedium cost
A single oncology trial data trust with mandatory deposit within eighteen months

Every cancer trial's anonymised patient-level data would go into one trusted repository within eighteen months of completion, with a single access committee, so researchers can re-analyse, pool and learn from trials that today stay locked up.

early clinicaldatasmall cost
A synthetic twin of every restricted cancer dataset for code development

Publish a fake but realistic copy of each secure cancer dataset so researchers can write and test their code at home, then run the finished code on the real data.

being tested at scaledatamedium cost
Accredited trusted research environments with curated cancer tables

Secure online workrooms where approved researchers can analyse cancer records without downloading them, with the data already cleaned and organised for cancer questions.

early clinicalengineeringmedium cost
Ambient AI note-taking to give oncologists back a day a week

Oncologists spend hours a day typing notes. Software that listens to the consultation and drafts the note, the letter and the orders could return that time to seeing patients.

early clinicaldatasmall cost
An automatic electronic frailty index inside the oncology record

Frailty is the strongest predictor of who will be harmed by treatment, but it is rarely measured. Software can estimate it automatically from existing records and flag patients who need a closer look.

early clinicalresearchmedium cost
An international consortium pooling the outcome of every treated child with cancer

Childhood cancers are rare, so no one country sees enough cases. Pool the treatment and outcome of every child treated anywhere into one governed dataset.

speculativepayersmall cost
An international registry of real (net) cancer drug prices paid by public payers

Countries negotiate secret discounts, so nobody knows what anyone actually pays for a cancer drug. Sharing real prices between public buyers would strengthen every negotiation.

speculativedatamedium cost
An open commons of patient-reported outcome data from cancer trials

Pool the side-effect and quality-of-life data patients report in trials into one open database so regimens can be compared honestly and models can be built.

speculativedatasmall cost
An open global model of cancer workforce supply and demand by country

No one knows exactly how many oncologists, nurses, physicists and pathologists each country has or needs. A public, regularly updated model would let governments plan training and spot shortfalls years ahead.

early clinicalphilanthropymedium cost
An open knowledge graph linking trials, results, biomarkers, drugs and recommendations

Build a public, machine-readable map connecting every cancer trial to its results, the drugs and biomarkers involved, and the guideline recommendations it supports, with a source for every link.

speculativedatamedium cost
An organotropism atlas that predicts where a cancer will spread

Different cancers favour different organs, and so do different patients. A model that predicts which organ is at risk could target surveillance and prevention.

being tested at scaledatamedium cost
Automatic weekly linkage of cancer registries to deaths, prescriptions and imaging

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.

preclinical evidenceclinicsmall cost
Bank three spatially separate tumour blocks from every resection

Hospitals usually keep one piece of a removed tumour. Keeping three pieces from different parts would show how varied the tumour is, at almost no extra cost.

speculativedatamedium cost
Bank yearly blood from cancer survivors so future tests can be validated

To prove a leftover-cancer test works you need blood taken years before relapse. Collecting and freezing yearly samples now makes every future test testable.

early clinicalclinicsmall cost
Broad research consent as a routine step of the cancer pathway

Every newly diagnosed patient would be asked, as part of standard care, whether their data and leftover tissue can be used for research, so researchers never have to go back and ask.

speculativeregulatorsmall cost
Capture diet, fibre and antibiotic exposure in every immunotherapy pivotal trial

Gut bacteria appear to influence whether immunotherapy works, and diet and antibiotics shape gut bacteria. Yet almost no drug trial records what patients ate or which antibiotics they took. Recording it would cost almost nothing.

speculativeregulatormedium cost
Certify every oncology software product for a standard bulk data export

Regulators would test and certify that every hospital cancer system can export its records in a standard format, the way electrical appliances are certified safe.

early clinicalphilanthropylarge cost
Digitise the nation's pathology slides and link them to outcomes

Scan the millions of cancer slides already sitting in hospital basements and connect each to what happened to the patient, creating the world's largest training set for pathology AI.

early clinicalengineeringmedium cost
Direct record-to-database data capture: no manual transcription, no full source verification

Trial staff still retype data from the hospital record into the trial database, and monitors then check every entry by hand. Piping data directly and checking by risk would cut cost and errors.

early clinicalpatientssmall cost
Dynamic consent with usage receipts

An app where patients choose what their data can be used for, see every time it is used, and can switch permissions on or off.

speculativepolicysmall cost
Enforce individual participant data sharing as a condition of publication and funding

Journals and funders already ask trialists to share patient-level data; almost nobody checks. Make it a checked condition with real consequences.

early clinicalengineeringsmall cost
Every AI output logged in the record with input hash, version and clinician response

Whenever an AI tool gives a result about a patient, the hospital system would permanently record what it saw, which version it was, what it said and what the doctor did with it.

early clinicalpayermedium cost
Every tumour genomic report machine-readable and deposited nationally

Genetic test results for tumours are mostly PDFs. Require labs to also send a computer-readable version to a national store, so variants can be linked to what treatments worked.

early clinicalengineeringmedium cost
Federated training of pathology and radiology models across hospitals

Train one AI on slides and scans from many hospitals without any hospital ever sharing its images: the model travels, the data stay.

early clinicalpayermedium cost
Fund a biopsy at progression, every time, as standard care

When a treatment stops working, the tumour is rarely re-sampled, so nobody learns why. Paying for a biopsy at that moment would build the missing map of resistance.

early clinicalpolicysmall cost
Journals check that data links actually work, and flag papers whose data vanish

Papers say 'data available on request' or link to files that no longer exist. Journals should verify data access at publication and periodically afterwards, and mark papers whose data have disappeared.

being tested at scalepatientsmedium cost
Let patients themselves donate their records and samples for ultra-rare cancers

For very rare cancers, patients are scattered across countries. Patient-driven projects can gather records, saliva and tumour samples by post and share the data openly.

early clinicaldatasmall cost
Link bariatric and GLP-1 registries to cancer registries in every country that has both

Millions of people have had weight-loss surgery or now take weight-loss drugs. Linking those records to cancer registries would show, cancer by cancer, how much reversing obesity prevents, for almost no cost.

being tested at scaledatalarge cost
Link every national cancer registry to tumour genomics

Join the national list of who got cancer to the genetic profile of each tumour, so we can see for the whole population which mutations matter and which drugs work for them.

early clinicalresearchmedium cost
Link single-cell and spatial tumour atlases to clinical outcomes

The detailed molecular maps of tumours being built today mostly lack information on what happened to the patient. Require every atlas sample to carry consented outcome data.

early clinicaldatamedium cost
Live guideline-concordance dashboards for every tumour board, generated from the record

Hospitals rarely know what fraction of their patients got the recommended treatment. Software reading the electronic record can show each team, every month, where care deviated from guidelines.

speculativephilanthropymedium cost
Make a population cancer registry a condition of every cancer aid programme

You cannot fix what you cannot count. Every donor-funded cancer programme should fund and require a population-based cancer registry so results can be measured over time.

speculativedatasmall cost
Mandatory machine-readable portfolio reporting for all large cancer funders

Every funder that spends more than $50 million a year on cancer research would publish what it funds in a shared, coded database, so gaps and duplication can be seen across the whole system.

speculativeregulatorsmall cost
Map trial case report forms to the registry standard so trial and routine data join

Trials and hospital records describe the same things in different languages. Publish the translation so trial patients can be followed for life in routine data and trial results compared with routine care.

speculativedatasmall cost
Monitor biomarker positivity rates across labs in real time to catch assay drift

If one lab suddenly starts finding twice as many 'positive' results as others, something has gone wrong with its test. Pooling positivity rates across labs would catch this automatically.

speculativepayermedium cost
No mCODE, no payment: tie oncology reimbursement to a minimal structured record

Hospitals would only be paid for cancer treatment if they record a small, standard set of facts (diagnosis, stage, biomarkers, treatment, outcome) in a shared format that any computer can read.

early clinicalengineeringsmall cost
One certified open-source de-identification pipeline for scans and slides

Build and certify a single free tool that strips names and identifying marks from cancer scans and pathology slides, so every hospital stops writing its own.

early clinicalpolicymedium cost
One legal framework for pooling rare cancer data across borders

Rare cancers are too uncommon for any country to learn from alone. Agree one set of rules so records from many countries can be combined.

preclinical evidencedatasmall cost
One open atlas of how tumours escape every drug

Knowledge about how cancers become resistant is scattered across thousands of papers and company files. Pooling it into one structured, public resource would let anyone see the pattern.

early clinicalphilanthropymedium cost
Open-source cancer registry-in-a-box for low-resource settings

A registry-in-a-box would be a free, ready-to-run cancer registry system, working on phones and without constant internet, so any hospital anywhere can start counting and following its cancer patients.

early clinicalresearchsmall cost
Open, benchmarked algorithms for lines of therapy and progression from routine data

Publish the exact rules used to work out from messy hospital records which treatment a patient was on and when it stopped working, and test them all on the same data.

early clinicalpatientsmedium cost
Patient-held portable consent for reusing samples and data across studies

Patients would carry a digital consent that says how their trial samples and records may be reused, so their contribution is not locked to one company or study and they decide who benefits from it.

early clinicalpolicysmall cost
Patient-level data from failed trials becomes open by default after two years

When a trial fails, the company has little commercial reason to keep the detailed data secret. Make sharing it the default rather than something researchers must beg for.

being tested at scaleclinicmedium cost
Patient-reported symptoms captured as standard structured data in every clinic

Every cancer clinic would collect patients' own reports of symptoms and quality of life through a standard questionnaire that feeds straight into the record and into research datasets.

speculativedatasmall cost
Pick the laboratory model that matches the patient, not the one to hand

Labs usually use whichever tumour models they already have. A searchable index that finds the model closest to a specific patient's tumour would make experiments more relevant.

early clinicalclinicmedium cost
Point-of-care randomisation built into the oncology record

When two accepted treatments are equally reasonable, the computer system would offer to randomise the choice and track the result, turning ordinary care into a continuous trial.

speculativedatamedium cost
Pool every immunotherapy trial's biomarker data into one commons

Dozens of trials have collected immune, genomic and imaging data on the same drugs. Nobody can analyse them together, so the answer stays hidden in fragments.

preclinical evidencedatamedium cost
Pool every multi-sample tumour genome into one open evolution atlas

Several big projects have sequenced the same tumours at different times and places, but their data sit apart. Bringing them together with common analysis would show general rules of how cancers evolve.

early clinicaldatamedium cost
Privacy-preserving linkage tokens for every cancer data holder

Give each patient a scrambled code that is the same across hospitals, labs and registries, so records can be joined without anyone seeing names.

speculativedatasmall cost
Public data-quality scorecards for every cancer centre

Publish a simple report card showing how complete, timely and standard each hospital's cancer data are, so poor recording becomes visible and fixable.

speculativepolicysmall cost
Public procurement clauses banning data export fees and lock-in

Hospitals buying cancer software with public money would be required to include contract terms guaranteeing free, standard data export and no penalties for switching.

early clinicaldatamedium cost
Send the code to the data: a federated analytics network of cancer centres

Hospitals keep their records at home; researchers send in a programme that runs at each hospital and only the summary results come back.

early clinicalregulatormedium cost
Stream trial data to regulators as it accrues; review starts at last patient visit

Instead of waiting months for a company to package trial results, regulators would see the data flow in during the trial and could decide within weeks of it ending.

early clinicalclinicsmall cost
Structured, coded radiology reports for cancer response instead of free text

Radiologists would record tumour measurements and response in tick-box, coded form rather than prose, so progression is machine-readable across every scan.

speculativepolicymedium cost
Treat resistance like an infectious disease and run national surveillance

Countries track how bacteria become resistant to antibiotics and publish it. Doing the same for cancer drugs would show which escape routes are becoming common and where.

early clinicalengineeringmedium cost
Trial matching inside the electronic record at the moment a treatment is chosen

When an oncologist opens the order screen to prescribe a new line of treatment, the record would show the trials this patient may fit, with the nearest open site and a one-click referral.

being tested at scalepolicylarge cost
Universal tumour and germline sequencing at diagnosis feeding a shared learning system

Sequence every cancer at diagnosis, along with the patient's inherited genes, and pool the results with treatments and outcomes so every patient teaches the system how to treat the next.

Key papers

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A cancer data donor card: patient-controlled donation of records for researchA common consent and material transfer template for tumour biobanksA consented commons of surgical video linked to pathology and outcomesA federated learning consortium of cancer centres that jointly own the modelsA global federated real-world evidence network at regulatory gradeA global medical isotope supply observatory with forecasts and shortage alertsA global rapid tissue donation network for metastatic diseaseA live 'seats available' feed for trial slots, like airline inventoryA live national dashboard of stage at diagnosis as the scorecard for early detectionA live stock-out map for essential chemotherapy drugsA machine-readable treatment summary handed to every patient and readable by any hospitalA national cancer data space with one legal front doorA national late-effects registry linking treatment exposures to outcomes decades laterA national repository of radiotherapy dose plans linked to outcomesA patient-held cancer record that travels across providers and bordersA patient-owned, portable complete cancer record in a standard formatA pre-competitive consortium to train a shared multimodal cancer foundation modelA public atlas of drug-pair responses across a thousand patient-derived organoidsA public map of trial deserts to steer where new sites openA single oncology trial data trust with mandatory deposit within eighteen monthsA synthetic twin of every restricted cancer dataset for code developmentAccredited trusted research environments with curated cancer tablesAmbient AI note-taking to give oncologists back a day a weekAn automatic electronic frailty index inside the oncology recordAn international consortium pooling the outcome of every treated child with cancerAn international registry of real (net) cancer drug prices paid by public payersAn open commons of patient-reported outcome data from cancer trialsAn open global model of cancer workforce supply and demand by countryAn open knowledge graph linking trials, results, biomarkers, drugs and recommendationsAn organotropism atlas that predicts where a cancer will spreadAutomatic weekly linkage of cancer registries to deaths, prescriptions and imagingBank three spatially separate tumour blocks from every resectionBank yearly blood from cancer survivors so future tests can be validatedBroad research consent as a routine step of the cancer pathwayCapture diet, fibre and antibiotic exposure in every immunotherapy pivotal trialCertify every oncology software product for a standard bulk data exportDigitise the nation's pathology slides and link them to outcomesDirect record-to-database data capture: no manual transcription, no full source verificationDynamic consent with usage receiptsEnforce individual participant data sharing as a condition of publication and fundingEvery AI output logged in the record with input hash, version and clinician responseEvery tumour genomic report machine-readable and deposited nationallyFederated training of pathology and radiology models across hospitalsFund a biopsy at progression, every time, as standard careJournals check that data links actually work, and flag papers whose data vanishLet patients themselves donate their records and samples for ultra-rare cancersLink bariatric and GLP-1 registries to cancer registries in every country that has bothLink every national cancer registry to tumour genomicsLink single-cell and spatial tumour atlases to clinical outcomesLive guideline-concordance dashboards for every tumour board, generated from the recordMake a population cancer registry a condition of every cancer aid programmeMandatory machine-readable portfolio reporting for all large cancer fundersMap trial case report forms to the registry standard so trial and routine data joinMonitor biomarker positivity rates across labs in real time to catch assay driftNo mCODE, no payment: tie oncology reimbursement to a minimal structured recordOne certified open-source de-identification pipeline for scans and slidesOne legal framework for pooling rare cancer data across bordersOne open atlas of how tumours escape every drugOpen-source cancer registry-in-a-box for low-resource settingsOpen, benchmarked algorithms for lines of therapy and progression from routine dataPatient-held portable consent for reusing samples and data across studiesPatient-level data from failed trials becomes open by default after two yearsPatient-level multimodal foundation models for treatment selectionPatient-reported symptoms captured as standard structured data in every clinicPick the laboratory model that matches the patient, not the one to handPoint-of-care randomisation built into the oncology recordPool every immunotherapy trial's biomarker data into one commonsPool every multi-sample tumour genome into one open evolution atlasPrivacy-preserving linkage tokens for every cancer data holderPublic data-quality scorecards for every cancer centrePublic procurement clauses banning data export fees and lock-inSend the code to the data: a federated analytics network of cancer centresStream trial data to regulators as it accrues; review starts at last patient visitStructured, coded radiology reports for cancer response instead of free textTreat resistance like an infectious disease and run national surveillanceTrial matching inside the electronic record at the moment a treatment is chosenUniversal tumour and germline sequencing at diagnosis feeding a shared learning system

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