The main risk is not that the science is obviously broken; it is that Intellia is now entering the narrowest part of the funnel where approval, safety interpretation, payer design and first-launch execution all matter at once.
Lonvo-z is the value anchor, so any delay, restrictive label or weak real-world conversion would hit both near-term revenue and the platform premium.
ATTR remains important because a clean rebound would broaden the franchise, while another setback would reinforce the view that Intellia is a one-product story.