What is the Donidalorsen?

The study drug is called donidalorsen (don-id-a-lor-sen). Donidalorsen is designed to lower the amount of a protein called prekallikrein (PKK) in the body. By lowering PKK, donidalorsen may help reduce or prevent HAE attacks.

Donidalorsen is an injection that is administered under the skin of the upper arm, abdomen, or thigh.