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April 22, 2025 | 5 min read | Nick Paul Taylor
 

Alnylam and BridgeBio are competing for people who are switching from Pfizer’s blockbuster ATTR amyloidosis drug tafamidis while all three companies are fighting for new patients.
A three-way tussle has emerged in the growing ATTR amyloidosis market as Alnylam and BridgeBio Pharma have secured FDA approvals to challenge Pfizer.

- ATTRibute-CM, BridgeBio’s Phase 3 clinical trial of acoramidis in patients with ATTR-CM, achieved statistical significance in reducing the risk of ACM or first CVH versus placebo in ATTRv-CM patients (59.1% risk reduction), establishing the mechanistic hypothesis that stabilizing TTR may delay or prevent ATTRv-CM

- ACT-EARLY is a registrational, randomized, double blind, placebo controlled, event driven prevention study that will enroll ~600 asymptomatic carriers of a pathogenic TTR variant. Diagnosis of ATTRv disease will be evaluated as the primary analysis of the study