Acoramidis Significantly Reduces All-cause Mortality in the Overall ATTR-CM Variant and V142I (V122I) Populations

- Simultaneously published in JAMA Cardiology along with moderated posters at AHA, acoramidis demonstrated:

59% risk reduction in ACM in the ATTR-CM variant population at Month 42 (p=0.032) compared to patients initially randomized to placebo in the ATTRibute-CM study69% risk reduction in ACM/ first CVH through Month 30 compared to placebo (p=0.016) and a 69% risk reduction in ACM through Month 42 (p=0.045) in ATTR-CM participants with the genetic variant p.Val142Ile(V142I, V122I) compared to patients initially randomized to placebo in the ATTRibute-CM study

- This is the first report of clinical benefit of this magnitude observed in this high-risk population with significant unmet need

PALO ALTO, Calif., Nov. 08, 2025 (GLOBE NEWSWIRE) -- BridgeBio Pharma, Inc. (Nasdaq: BBIO) (“BridgeBio” or the “Company”), a new type of biopharmaceutical company focused on genetic diseases, presented data from the ATTRibute-CM study, showing that acoramidis significantly reduces all-cause mortality (ACM) through Month 42 in the overall variant ATTR-CM population, and specifically in the p.Val142Ile (V142I, V122I) subpopulation. The V142I variant disproportionately affects individuals of Western African ancestry, with a carrier frequency of 3-4% in the U.S. Black population. These data were presented in two moderated digital posters at the American Heart Association (AHA) Scientific Sessions 2025 and were simultaneously published in JAMA Cardiology. These results in the variant and V142I subpopulations are consistent with the statistically significant results previously presented from the ATTRibute-CM study in the wild-type population, and the ATTR-CM population overall. Acoramidis is a selective, small molecule, orally administered, near-complete (≥90%) transthyretin (TTR) stabilizer.

“These data represent an important finding for patients with the V142I variant of ATTR-CM, a population that has historically had limited access to early diagnosis and treatment,” said Kevin Alexander, M.D., of Stanford University School of Medicine, U.S., and first author of the JAMA Cardiology manuscript. “The 69% reduction in all-cause mortality observed with acoramidis is clinically meaningful, with sustained and statistically significant benefits in survival, functional capacity, and quality of life. These results are encouraging for individuals with variant ATTR-CM and reflect progress in advancing precision medicine and promoting equity in cardiovascular care."

Details from the JAMA Cardiology manuscript, Efficacy of Acoramidis in Wild-Type and Variant Transthyretin Amyloid Cardiomyopathy: Results from ATTRibute-CM and its Open-Label Extension, include:

Building upon previously presented data, which showed a 59% reduction in the risk of ACM or first cardiovascular-related hospitalization (CVH) versus placebo in the overall variant population through Month 30, this analysis observed an even greater 69% reduction in the risk of ACM or first CVH in the V142I population through Month 30There was also a consistent benefit to V142I patients through Month 42, with a 69% reduction in the risk of ACM for acoramidis patients compared to patients initially randomized to placeboThe manuscript also summarizes the 59% risk reduction in ACM previously reported in variant patients through Month 42, as well as the meaningful benefits in functional capacity and quality of life measurements for variant patients, which is the first report of clinical benefit of this magnitude observed in this high-risk population with significant unmet need. This data includes:

6-minute walk distance with a least-squares mean difference of 87 meters (p = 0.0048) in favor of acoramidis through Month 30Kansas City Cardiomyopathy Questionnaire Overall Summary score, a patient-reported outcome measure that assesses the health status of individuals with heart failure, with a least-squares mean difference between of 20 points (p = 0.0019) in favor of acoramidis through Month 30This data was also shared in two moderated digital posters at the AHA Scientific Sessions 2025 titled, Acoramidis Effect on All-Cause Mortality in Patients with p.V142I (V122I) Variant ATTR-CM: Findings from the ATTRibute-CM Study, presented by Marianna Fontana, M.D., Ph.D. of University College London, UK and Acoramidis Reduces All-Cause Mortality and First Cardiovascular Hospitalization in Patients with Variant Transthyretin Amyloid Cardiomyopathy: Results from the ATTRibute-CM Study, presented by Prem Soman, M.D., Ph.D. of University of Pittsburgh School of Medicine, U.S.

“There was a time when I couldn’t understand why I was losing my strength – why simple things that used to come easily suddenly felt so hard. Living with ATTR-CM means facing a disease that quietly steals pieces of your life,” said Mike Lane, Founder, Amyloidosis Army, an advocacy group focused on serving the variant ATTR-CM community. “That’s why every bit of progress in this field matters so much. When I see new results and real advances, especially data like this in the variant population, I feel something I haven’t felt in a long time: hope. Hope that change is possible. Hope that science is finally catching up to the urgency of our lives.”

In addition to these moderated digital posters on the variant population, eight other digital posters were shared on the open-label extension data from ATTRibute-CM and real-world evidence. These findings included:

Acoramidis Reduces All-Cause Mortality and Cardiovascular-Related Hospitalizations Through Month 42 in Transthyretin Amyloid Cardiomyopathy Across All Pre-specified Patient Subgroups, presented by Lily Stern, M.D. of Cedars-Sinai Heart Institute, U.S.

The long-term benefit of acoramidis was consistently shown in patients initially randomized to acoramidis treatment compared with placebo to acoramidis switch after 30 months across multiple clinically relevant subgroups, underscoring the importance of early initiation of acoramidis to reduce the long-term risk of ACM or CVHAcoramidis Lowers NT-proBNP in a Larger Proportion of ATTRibute-CM Study Participants with Transthyretin Amyloid Cardiomyopathy Compared with Placebo, Independent of Atrial Fibrillation Status, presented by Mathew Maurer, M.D. of Columbia University Irving Medical Center, U.S.

In ATTRibute-CM, the proportion of participants with improved N-terminal Pro-Brain Natriuretic Peptide (NT-proBNP) at Month 30 was consistently around 15 percentage points higher with acoramidis than placebo, regardless of atrial fibrillation (AF)/atrial flutter (AFL) status at baseline or during the study. The ongoing open-label extension study may offer insights into the durability of this effect and its long-term clinical consequencesGeographic Disparities in Transthyretin Amyloid Cardiomyopathy Prevalence in United States Veterans, presented by Sandesh Dev, M.D. of Southern Arizona VA Health Care System, U.S.

The documented prevalence of ATTR-CM increased over time in U.S. veterans, though geographic disparities exist at the state level that appear to correlate with access to amyloidosis centers. For regions with lower-than-expected prevalence, strategies are needed to address regional disparities in disease awareness, diagnosis, and access to careDemographic Disparities in Tafamidis Treatment and Clinical Outcomes Across the United States, presented by Nicole Cyrille-Superville, M.D. of Atrium Health Sanger Heart & Vascular Institute Kenilworth, Charlotte, NC, U.S.

This large-scale analysis of a U.S. cohort suggests existing gender and racial disparities in tafamidis treatment initiation and outcomes in ATTR-CM. White women had the lowest rates of tafamidis initiation, while Black women had the worst clinical outcomes, highlighting a compounded disparity in treatment and survival by gender and race. These findings underscore the urgent need to address demographic-based disparities and ensure equitable care for all patients with ATTR-CMSerum Transthyretin Levels at Day 28 are Associated with Cardiovascular Outcomes: Insights from the ATTRibute-CM Study, presented by Nitasha Sarswat, M.D. of UChicago Medicine, U.S.

Across treatment groups, serum TTR levels above normal range (≥20 mg/dL) at Day 28 were associated with a lower risk of cardiovascular outcomes at Month 30, when compared with serum TTR levels below normal range (