Mapping the path to category leadership in CEACAM5 ADCs
The question
Will the first company to market lead the category ten years after approval — or will a new entrant take the lead?
CEACAM5 is a crowded antibody–drug conjugate target, with several companies in the clinic and more than 1,000 patents covering it. We set out to answer whether a first-mover advantage will hold, or whether the door is still open for a new entrant to become the category leader.
Our approach
- Clinical trials. We analyzed 187 relevant clinical trials and found a major gap in patient enrichment. Today's trials address less than 15% of the market, which leaves the rest open to new entrants.
- Diagnostics. The diagnostic in current use is the main reason trials are so narrowly focused. We designed alternative diagnostics that are feasible with today's technology and could expand the addressable population by an estimated 40–50%.
- Patent estate. We analyzed more than 1,000 patents covering antibodies, payloads and linkers. The estate is large but permeable, and we identified clear paths for a new entrant. Our recommendation was to build defensible niches rather than rely on patents alone.
- Competition. We analyzed 44 competitors and identified platform substitution — a rival technology displacing ADCs entirely — as the biggest long-term risk, then developed strategies to counter it.
- Standard of care. We analyzed the current standard of care and the routes to first-line inclusion, and outlined an approach a new entrant could use to reach first-line therapy.
What it means for founders
Crowded patents don't close the door. Leadership is decided by trial design, diagnostics and the route to the standard of care — and a Series A investor will test all three.