Data from Pharmawand - Curated by Marshall Pearce - Date added 19 May 2017

Shire announced positive topline Phase III results for the HELP study, a global, multi-center, randomized, double-blind placebo-controlled parallel group trial that evaluated the efficacy and safety of subcutaneously administered SHP 643 (lanadelumab) versus placebo over 26 weeks in patients 12 years of age or older with Hereditary Angioedema (HAE). This study met its primary endpoint and all secondary endpoints with highly statistically significant and clinically meaningful results for all three lanadelumab treatment arms compared to placebo. The 300 mg dose administered once every two weeks resulted in a statistically significant reduction in mean HAE attack frequency of 87% compared to placebo (p <0.001).

Results were consistent regardless of baseline attack rate. Notably for each of the three lanadelumab regimens studied, whether administered biweekly or monthly, a significantly higher proportion of patients-compared to placebo-were attack free throughout the entire 26 week study period. This study was representative of the full HAE disease spectrum. Overall, 52% of patients experienced three or more attacks per month at baseline, 65% of patients reported a history of laryngeal attacks and 56% were on long-term prophylaxis (LTP). Ninety percent of patients completed the study. Ninety-six percent of those who completed the study chose to roll-over into the ongoing long-term safety study (HELP Study Extension).

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