NCNA ▼ -5.4% - NuCana plc $NCNA patent news NuCana plc shares fell 5.4% today following patent-related news. The headline doesn't specify whether the development was positive or negative, so the exact reason for the decline isn't clear from the information provided. Patent developments can significantly impact biotech stocks depending on whether they strengthen or weaken a company's intellectual property position. 28-AUG-2026 03:56 PM ET