Therapy found to reduce lipoprotein(a) levels

APO(a)-L<sub>RX</sub> found to reduce lipoprotein(a) levels

(HealthDay)—For patients with elevated lipoprotein(a) levels and established cardiovascular disease, hepatocyte-directed antisense oligonucleotide AKCEA-APO(a)-LRX (APO(a)-LRX) reduces lipoprotein(a) levels, according to a study published online Jan. 1 in the New England Journal of Medicine.

Sotirios Tsimikas, M.D., from the Sulpizio Cardiovascular Center at the University of California, San Diego, and colleagues conducted a randomized, double-blind, placebo-controlled, dose-ranging trial involving 286 patients with established cardiovascular disease and screening (a) levels of at least 60 mg/dL. For six to 12 months, patients received either APO(a)-LRX (20, 40, or 60 mg every four weeks; 20 mg every two weeks; or 20 mg every week) or saline placebo subcutaneously.

The researchers observed dose-dependent decreases in lipoprotein(a) levels, with mean decreases of 35, 56, 58, 72, and 80 percent at a dose of 20 mg every four weeks, 40 mg every four weeks, 20 mg every two weeks, 60 mg every four weeks, and 20 mg every week, respectively, compared with 6 percent for placebo. With respect to , liver and renal measures, or influenza-like symptoms, there were no significant differences between any APO(a)-LRX dose and placebo. Injection-site reactions were the most common adverse events.

"Elevated levels of lipoprotein(a) are a cardiovascular risk factor for which no effective pharmacological therapy currently exists," the authors write. "In this trial, we found that APO(a)-LRX provided potent reductions in levels of lipoprotein(a) in patients with ."

The study was funded by Akcea Therapeutics, the manufacturer of APO(a)-LRX.

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Journal information: New England Journal of Medicine

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