Idorsia's aprocitentan improved key prognostic indicators in patients with difficult-to-control hypertension

Core Insights - Idorsia Ltd announced the publication of a new analysis from the Phase 3 PRECISION study, highlighting the effects of aprocitentan on blood pressure variables in resistant hypertension [1][6] Company Overview - Aprocitentan (TRYVIO™/JERAYGO™) is the first approved antihypertensive targeting the endothelin pathway, showing significant reductions in 24-hour blood pressure, especially at night [2][7] - Aprocitentan is approved in the US and EU for treating resistant hypertension in combination with other antihypertensives, with commercial availability since October 2024 [7][24] Clinical Findings - The PRECISION study demonstrated that aprocitentan led to substantial improvements in ambulatory blood pressure parameters predictive of cardiovascular risk, potentially reducing cardiovascular events [3][10] - Aprocitentan treatment normalized dipping patterns in non-dippers and reduced blood pressure load by approximately 20% during both daytime and nighttime [11][13] - The drug's efficacy was consistent across patients with varying arterial stiffness and salt sensitivity, indicating its broad applicability in difficult-to-control hypertension [11][12] Market Context - Approximately 1.4 billion people globally suffer from hypertension, with many patients remaining uncontrolled despite multiple treatments [5][9] - In the US, around 50% of patients with hypertension on multiple therapies do not achieve blood pressure control, highlighting a significant medical need [5][9] Research and Development - The PRECISION study was a multicenter, randomized, double-blind trial involving 730 patients, assessing the efficacy of aprocitentan against placebo [8][10] - The study's primary endpoints included changes in office systolic blood pressure, with significant reductions observed in both the 12.5 mg and 25 mg doses of aprocitentan compared to placebo [10][12] Safety Profile - Treatment-emergent adverse events were reported in 27.6% and 36.7% of patients treated with aprocitentan 12.5 mg and 25 mg, respectively, with fluid retention being the most common side effect [14]