OnCo
ideasIdea

Biosimilar-first defaults and payment parity in every cancer day unit

Cheaper copies of biological cancer drugs exist but are used far less in some countries than others. Making them the default choice saves billions with no loss of benefit.

NHS England moved most patients to trastuzumab and rituximab biosimilars within a year of launch through commissioning defaults and shared savings; US uptake was slower because reimbursement incentives favoured the originator. The proposal is a bundle of implementation measures for every payer: prescribing systems default to the lowest-cost interchangeable biologic, payment parity so clinics do not lose revenue by switching, pharmacist-led switching protocols with patient information, and public reporting of biosimilar share by centre.

Hypothesis
The bundle raises biosimilar share for oncology monoclonals above 80% within 12 months of launch in adopting systems, saving at least 30% of prior spend on those molecules with no change in clinical outcomes.
Rationale
Biosimilar uptake is a behavioural and incentive problem, not a scientific one; where defaults and incentives were aligned, switching was fast and safe.
What would test it
Compare biosimilar share and spend between health systems adopting the bundle and matched systems that do not, over the first two years of each new oncology biosimilar launch.
Maturity
being tested at scale
Who has to act
payer
Cost to try
Small (under $1M)
Years to first evidence
2
Bottlenecks it attacks
  • Prices and value · New cancer drugs routinely cost over $150,000 a year, often for months of benefit. Systems cannot afford them and patients go bankrupt.

Connected

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