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It is not clear, for instance, why Novartis is paying such a huge premium for an asset that has yet to provide definitive clinical proof; 177Lu-PSMA-617’s pivotal Vision study will not yield radiographic progression-free survival data until the end of 2019.
The Swiss firm could lose either way. If Vision fails it will have thrown $2.1bn down the drain; if it succeeds it opens itself up to questions about what precisely its business development team was doing last year when ABX was willing to sell 177Lu-PSMA-617 for just $12m.
And how likely is Vision to succeed? The precedent is not great. The antigen targeted by 177Lu-PSMA-617 is PSMA, which is expressed in 70-80% of prostate cancer patients, but is also present on tissues other than prostate cancer, so the project is unlikely to offer a benefit devoid of toxicity.
Nano fremstår som et mer åpenbart godt kjøp for Novartis, mindre usikkerhet og denne synergien med Rituximab.