Genome editing for hereditary angioedema: A landmark trial and important unanswered questions.

Hereditary angioedema is a bradykinin-mediated genetic disorder increasingly controlled with effective long-term prophylaxis. In a phase 3 trial, a single dose of lonvoguran ziclumeran, an in vivo CRISPR-Cas9 therapy targeting KLKB1, significantly reduced attack rates. This approach represents a highly promising therapeutic strategy for HAE. However, it also raises important questions that require further investigation.