Novartis Lp(a) Drug Lowers Risk Marker but Fails on Outcomes
Novartis delivered an unwelcome surprise at the American Heart Association conference: its drug pelacarsen dramatically lowered lipoprotein(a), a genetic risk marker tied to cardiovascular disease, but did not reduce the chance of heart attack or stroke, according to STAT News.
The result is a genuine medical mystery. For years, drugmakers have treated elevated Lp(a) as a promising target, assuming that lowering the marker would translate into fewer cardiovascular events. Pelacarsen was among the most advanced tests of that thesis. Its failure to improve hard outcomes, despite hitting its biological target, suggests the link between Lp(a) and heart disease may be more complicated than the field assumed.
The stakes extend beyond Novartis. Rival programs, including candidates from Amgen and Eli Lilly, are chasing the same target. If lowering Lp(a) does not prevent events, billions in research spending and a key cardiovascular strategy come into question. Investigators and investors will now scrutinize the full data for clues on what went wrong.
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