title: AMG145, a monoclonal antibody against proprotein convertase subtilisin kexin type 9, significantly reduces lipoprotein(a) in hypercholesterolemic patients receiving statin therapy: an analysis from the LDL-C Assessment with Proprotein Convertase Subtilisin Kexin Type 9 Monoclonal Antibody Inhibition Combined with Statin Therapy (LAPLACE)-Thrombolysis in Myocardial Infarction (TIMI) 57 trial.
abstract: BACKGROUND
  Lipoprotein(a) [Lp(a)] is an emerging risk factor for cardiovascular disease. Currently, there are few available therapies to lower Lp(a). We sought to evaluate the impact of AMG145, a monoclonal antibody against proprotein convertase subtilisin kexin type 9 (PCSK9), on Lp(a).
  
  
  RESULTS
  As part of the LDL-C Assessment With PCSK9 Monoclonal Antibody Inhibition Combined With Statin Therapy (LAPLACE)-Thrombolysis in Myocardial Infarction (TIMI) 57 trial, 631 patients with hypercholesterolemia receiving statin therapy were randomized to receive AMG145 at 1 of 3 different doses every 2 weeks or 1 of 3 different doses every 4 weeks versus placebo. Lp(a) and other lipid parameters were measured at baseline and at week 12. Compared with placebo, AMG145 70 mg, 105 mg, and 140 mg every 2 weeks reduced Lp(a) at 12 weeks by 18%, 32%, and 32%, respectively (P<0.001 for each dose versus placebo). Likewise, AMG145 280 mg, 350 mg, and 420 mg every 4 weeks reduced Lp(a) by 18%, 23%, and 23%, respectively (P<0.001 for each dose versus placebo). The reduction in Lp(a) correlated with the reduction in low-density lipoprotein cholesterol (ρ=0.33, P<0.001). The effect of AMG145 on Lp(a) was consistent regardless of age, sex, race, history of diabetes mellitus, and background statin regimen. Patients with higher levels of Lp(a) at baseline had larger absolute reductions but comparatively smaller percent reductions in Lp(a) with AMG145 compared with those with lower baseline Lp(a) values.
  
  
  CONCLUSIONS
  AMG145 significantly reduces Lp(a), by up to 32%, among subjects with hypercholesterolemia receiving statin therapy, offering an additional, complementary benefit beyond robust low-density lipoprotein cholesterol reduction with regard to a patient's atherogenic lipid profile.
authors.affiliation: TIMI Study Group, Division of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
authors.forename: Nihar R
authors.initials: NR
authors.lastname: Desai
authors.forename: Payal
authors.initials: P
authors.lastname: Kohli
authors.forename: Robert P
authors.initials: RP
authors.lastname: Giugliano
authors.forename: Michelle L
authors.initials: ML
authors.lastname: O'Donoghue
authors.forename: Ransi
authors.initials: R
authors.lastname: Somaratne
authors.forename: Jing
authors.initials: J
authors.lastname: Zhou
authors.forename: Elaine B
authors.initials: EB
authors.lastname: Hoffman
authors.forename: Fannie
authors.initials: F
authors.lastname: Huang
authors.forename: William J
authors.initials: WJ
authors.lastname: Rogers
authors.forename: Scott M
authors.initials: SM
authors.lastname: Wasserman
authors.forename: Robert
authors.initials: R
authors.lastname: Scott
authors.forename: Marc S
authors.initials: MS
authors.lastname: Sabatine
mesh_terms: D000368:Aged; D000911:Antibodies, Monoclonal / Q000627:therapeutic use*; D061067:Antibodies, Monoclonal, Humanized; D015415:Biomarkers / Q000097:blood; D008078:Cholesterol, LDL / Q000097:blood; D004305:Dose-Response Relationship, Drug; D004311:Double-Blind Method; D004359:Drug Therapy, Combination; D005260:Female; D006801:Humans; D019161:Hydroxymethylglutaryl-CoA Reductase Inhibitors / Q000627:therapeutic use*; D006937:Hypercholesterolemia / Q000097:blood* / Q000188:drug therapy*; D017270:Lipoprotein(a) / Q000097:blood*; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000188:drug therapy; D000071449:Proprotein Convertase 9; D043484:Proprotein Convertases / Q000276:immunology*; D012307:Risk Factors; D012697:Serine Endopeptidases / Q000276:immunology*; D015912:Thrombolytic Therapy
chemical_list: D000911:Antibodies, Monoclonal; D061067:Antibodies, Monoclonal, Humanized; D015415:Biomarkers; D008078:Cholesterol, LDL; D019161:Hydroxymethylglutaryl-CoA Reductase Inhibitors; D017270:Lipoprotein(a); C472125:PCSK9 protein, human; D000071449:Proprotein Convertase 9; D043484:Proprotein Convertases; D012697:Serine Endopeptidases; C577155:evolocumab
keywords: PCSK9 protein, human; biomarker; lipids; lipoproteins