Intellia Therapeutics, Inc. announced the first patient dosed in the global pivotal, Phase 3 MAGNITUDE trial of NTLA-2001. NTLA-2001 is an investigational in vivo CRISPR-based therapy designed as a single-dose treatment to inactivate the TTR gene and thereby prevent the production of TTR protein for the treatment of transthyretin (ATTR) amyloidosis. The MAGNITUDE trial is evaluating the efficacy and safety of NTLA-2001 in patients with ATTR amyloidosis with cardiomyopathy.

The pivotal Phase 3 MAGNITUDE clinical trial is a randomized, double-blind, placebo-controlled study to evaluate the efficacy and safety of NTLA-2001 in approximately 765 patients with transthyretin amyloidosis with cardiomyopathy (ATTR-CM). The primary endpoint of the study is a composite endpoint of cardiovascular (CV)-related mortality and CV-related events. Adult patients with hereditary or wild type ATTR-CM will be randomized 2:1 to receive a single 55 mg infusion of NTLA-2001 or placebo.