Takeda announced that the Phase 3 SHP643-301 study (NCT04070326) evaluating the safety profile and pharmacokinetics (PK) of TAKHZYRO® (lanadelumab) in patients 2 to <12 years of age is complete and has met its objectives. The safety profile was consistent with that seen in the clinical program for patients 12 years of age and older; there were no serious adverse events and no dropouts due to adverse events. The study also successfully reached the secondary objective evaluating the clinical activity/outcome of TAKHZYRO in preventing hereditary angioedema (HAE) attacks as well as characterizing the pharmacodynamics of TAKHZYRO in pediatric subjects 2 to <12 years of age.

SHP643-301, also known as the SPRING study, is a multicenter, open-label Phase 3 study to evaluate the safety, PK and PD of TAKHZYRO for prevention against acute attacks of HAE in pediatric patients 2 to <12 years of age. Participants aged 2 to < 6 years received lanadelumab at a dose of 150 milligrams (mg) every 4 weeks (q4wks) over 52-week treatment period. Participants aged 6 to <12 years received lanadelumab at a dose of 150 mg every 2 weeks (q2wks) over 52-week treatment period.

This study is complete, and full results will be presented at upcoming medical meeting(s).