Clinical research
Being tested in people in registered clinical trials. Being in trials is not evidence that a treatment works or is safe.
What this trial is testing
A late-stage trial of a one-time infusion designed to stop hereditary angioedema attacks by switching off a liver gene. It reported positive results, and its sponsor described it as the first successful Phase 3 trial of gene editing performed inside the body.
A global Phase 3 study of lonvoguran ziclumeran (NTLA-2002), a lipid-nanoparticle CRISPR-Cas9 therapy knocking out hepatic KLKB1, in adults with hereditary angioedema. Intellia reported positive results, described as marking a global first for in vivo gene editing, with a biologics licence application signalled for the second half of 2026.
Sources
- Intellia Therapeutics · 2026
Intellia reports positive Phase 3 results in hereditary angioedema ↗
What a trial result does and does not mean
Early-phase results come from small numbers of participants and short follow-up. They can change with more people and more time, and a trial that is recruiting, active or even completed has not established that a treatment works. Enrolment criteria are strict; eligibility is decided by the trial site, never by a website.