Novartis AGNovartis paused eight rap-cel CAR-T trials in autoimmune and neurological conditions after three patient deaths from a severe immune reaction.
Novartis AG paused eight clinical trials of its experimental CAR-T cell therapy rap-cel in autoimmune and neurological conditions, including lupus, rheumatoid arthritis, and multiple sclerosis, after three patients died from immune effector cell-associated hemophagocytic syndrome, a rare and severe immune reaction, as first reported by the Wall Street Journal on September 1, 2026. The pause does not cover the company's two ongoing rap-cel trials in lymphoma and leukemia, which continue. Bristol-Myers Squibb Company separately paused enrollment in its own competing CAR-T program, zola-cel, as a precaution after observing what it described as transient and reversible inflammatory events, with no reported deaths. Bristol-Myers informed regulators and researchers in early June but waited about three months before informing the broader public, while Novartis confirmed its pause only after an analyst noticed the halted trials in a public database and disclosed the deaths one week later. Hedge fund count for Novartis grew to 38 in the second quarter from 31 in the first, with position value rising to $3.66 billion from $3.02 billion, while Bristol-Myers holders fell to 74 from 83 and position value declined to $4.79 billion from $5.97 billion.
Novartis AGNovartis paused eight rap-cel CAR-T trials in autoimmune and neurological conditions after three patient deaths from a severe immune reaction.
Bristol-Myers Squibb CompanyBristol-Myers paused enrollment in its competing CAR-T program zola-cel and delayed informing the public for about three months, drawing regulatory scrutiny.
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