OnCo
ideasIdea

A national platform trial that every ctDNA-positive patient can join

Blood tests can now find leftover cancer months before scans, but most patients who test positive have nothing to enrol in. One standing trial per country would fix that.

MRD-guided intervention has proved feasible in bladder cancer and colorectal cancer, but each trial rebuilds the same infrastructure: assay contracts, testing schedules, referral pathways and consent. A standing national platform — one master protocol, shared control arm, rolling arms contributed by any sponsor, registry-based follow-up — converts a scattered set of underpowered studies into a permanent engine for the MRD setting.

Hypothesis
A national MRD platform doubles the proportion of ctDNA-positive patients enrolled in an interventional trial within three years and reduces the cost per randomised patient by half compared with standalone MRD trials.
Rationale
Platform infrastructure has repeatedly outperformed serial standalone trials in speed and cost, as seen in adaptive platforms in breast cancer and in pandemic therapeutics. The MRD setting is unusually well suited because the eligibility test is a single blood assay.
What would test it
Stand up the platform in one tumour type with two arms and a shared control, and measure enrolment rate, time from positive test to randomisation, and cost per randomised patient against historical standalone MRD trials.
Maturity
being tested at scale
Who has to act
policy
Cost to try
Large (over $50M)
Years to first evidence
5
Bottlenecks it attacks

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