Resistance is all too often looming with targeted therapies
Resistance is the biggest challenge across the landscape of different compounds such as the new RET or MET inhibitors. I think it is promising to look at the story of EGFR-activating mutations, as initially we had gefitinib and erlotinib but were unaware of how they actually worked until the mutation data evolved. Subsequently, more potent compounds were created that continue to extend the time of patients on these treatments through improved medicinal chemistry and superior target binding.