Pelacarsen didn’t protect heart health despite lowering levels of a protein particle, “Lp(a),” in a large clinical trial — a surprise result with important implications for cardiovascular drug research.

Novartis' Ionis-partnered Lp(a) blocker failed in testing. Both stocks fell.

(Bloomberg) -- A Novartis AG drug billed as a potential blockbuster failed to reduce the risk of heart attacks and strokes in a final-stage trial, marking a major setback for a…