AstraZeneca PLCAstraZeneca's phase III CARDIO-TTRansform study for Wainua missed endpoints.
BridgeBio Pharma shares surged to a 52-week high of $93.42 on Thursday after a late-stage clinical failure by rival AstraZeneca boosted confidence in BridgeBio's sole marketed drug, Attruby. The stock closed 15% higher, adding roughly $2.3 billion in market value, as investors viewed AstraZeneca's phase III CARDIO-TTRansform study miss for Wainua in ATTR-CM as strengthening Attruby's competitive position. Attruby, approved in November 2024 for ATTR-CM, generated $362.4 million in U.S. sales in 2025 and nearly $181 million in the first quarter of 2026. BridgeBio estimates the diagnosed U.S. ATTR-CM patient population grew from fewer than 5,000 in 2019 to over 50,000 in 2025, with a global market opportunity exceeding $20 billion. Pfizer, which dominates the ATTR-CM market with its Vyndaqel family generating about $1.6 billion in first-quarter 2026 global sales, also saw its shares rise 1% on the news.
AstraZeneca PLCAstraZeneca's phase III CARDIO-TTRansform study for Wainua missed endpoints.
BridgeBio Pharma IncAstraZeneca's phase III failure strengthens Attruby's competitive position in ATTR-CM.
Pfizer IncPfizer's Vyndaqel family benefits indirectly as a rival's setback reduces competitive threat.