Ionis announces phase 3 NEURO TTRansform study of eplontersen in patients with ATTRv-PN meets co primary and secondary endpoints

Ionis Pharmaceuticals, Inc. announced positive topline results from a 35-week interim analysis of the phase 3 NEURO-TTRansform study of Ionis and AstraZeneca's eplontersen in patients with hereditary transthyretin-mediated amyloid polyneuropathy (ATTRv-PN). Eplontersen demonstrated a statistically significant and clinically meaningful change from baseline for the co-primary endpoints of percent change in serum transthyretin (TTR) concentration and the modified Neuropathy Impairment Score +7 (mNIS+7), a measure of neuropathic disease progression, versus the historical placebo group. Eplontersen also met its key secondary endpoint of change from baseline in the Norfolk Quality of Life Questionnaire-Diabetic Neuropathy (Norfolk QoL-DN), showing treatment with eplontersen significantly improved patient-reported quality of life versus the historical placebo group. In the study, eplontersen demonstrated a favourable safety and tolerability profile with no specific concerns. The study data are consistent with the clinical profile seen across Ionis' other LICA programs, further validating how advancements in the company's LIgand-Conjugated Antisense technology position Ionis to deliver potentially transformative treatments for a range of unmet medical needs. Based on these study results, the companies will seek regulatory approval for eplontersen for ATTRv-PN and plan to file a new drug application with the US Food and Drug Administration this year. "These encouraging data reinforce the safety profile of eplontersen and demonstrate clear evidence of its potential to provide much needed therapeutic benefit to patients living with hereditary transthyretin-mediated amyloid polyneuropathy," said Teresa Coelho, M.D., a neurologist and neurophysiologist at Hospital Santo Ant

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