Benzinga | Mar 29, 2021 07:10AM EDT

Ionis Announces Phase 2 Study Of IONIS-PKK-LRx Met Its Primary And Secondary Endpoint

Ionis Pharmaceuticals, Inc. (NASDAQ:IONS) announced today that data from a Phase 2 clinical study of IONIS-PKK-LRx met its primary and secondary endpoints, achieving significant reductions in the number of attacks suffered by patients with hereditary angioedema (HAE) compared to placebo. The study demonstrated a mean reduction of 90% in the number of monthly HAE attacks in weeks one to 17 of the study (p <0.001) and a mean reduction of 97% in the number of monthly HAE attacks in weeks five to 17 (p=0.003). In weeks five to 17, 92% of patients treated with IONIS-PKK-LRx were attack-free compared to 0% in the placebo group (p <0.001).