# Wearable activity data as a validated real-world endpoint

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

## TL;DR

Step counts and sleep from a wristband could show whether a cancer treatment is helping or harming daily life. Prove they track survival and quality of life, then use them in real-world studies.

## Summary

Performance status is coarse and clinician-rated. Wearable-derived measures (daily steps, active minutes, sleep) have correlated with survival and hospitalisation in small oncology studies. The proposal is a large validation programme: wearables issued in routine care at several centres, linked to ePRO and registry outcomes, to establish which digital measures are prognostic, responsive to treatment effect and acceptable as regulatory endpoints in real-world and pragmatic studies.

## Fields

- Kind: Idea
- Last checked: 2026-09-08
- Hypothesis: A validated digital activity endpoint will predict overall survival better than clinician-rated performance status and detect treatment-related functional decline weeks earlier.
- Rationale: Gresham et al. and others found step counts predict hospitalisation and survival in advanced cancer; the endpoint lacks the scale of validation regulators require.
- Proposed test: Issue wearables to 3,000 patients starting systemic therapy across five centres; pre-register the analysis of steps versus survival and ePRO; seek qualification of the endpoint with regulators.
- Maturity: early-clinical
- Actor: research

## Sources

- Bottleneck evidence (Weak real-world evidence and registries): Gyawali, Hey & Kesselheim, Assessment of the clinical benefit of cancer drugs receiving accelerated approval (JAMA Intern Med 2019): https://doi.org/10.1001/jamainternmed.2019.0462

## Connected records

- fronts: [AI & Computation](https://onco.cc/fronts/ai-computation/), [Supportive Care & Survivorship](https://onco.cc/fronts/supportive-care/)
- terms: [Real-world evidence](https://onco.cc/terms/real-world-evidence/)
- bottlenecks: [Toxicity and quality of life are undervalued](https://onco.cc/bottlenecks/b-toxicity-qol/), [Weak real-world evidence and registries](https://onco.cc/bottlenecks/b-real-world-evidence/)
- key papers: [Assessment of the Clinical Benefit of Cancer Drugs Receiving Accelerated Approval](https://onco.cc/key-papers/paper-gyawali-jama-intern-med/)

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