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Inhibition of PCSK9 with evolocumab in homozygous familial hypercholesterolaemia (TESLA Part B): a randomised, double-blind, placebo-controlled trial

The Lancet (British edition), 2015-01, Vol.385 (9965), p.341-350 [Peer Reviewed Journal]

Elsevier Ltd ;2015 Elsevier Ltd ;Copyright © 2015 Elsevier Ltd. All rights reserved. ;Copyright Elsevier Limited Jan 24, 2015 ;ISSN: 0140-6736 ;EISSN: 1474-547X ;DOI: 10.1016/S0140-6736(14)61374-X ;PMID: 25282520 ;CODEN: LANCAO

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Title:
Inhibition of PCSK9 with evolocumab in homozygous familial hypercholesterolaemia (TESLA Part B): a randomised, double-blind, placebo-controlled trial
Author: Raal, Frederick J, Prof ; Honarpour, Narimon, MD ; Blom, Dirk J, MD ; Hovingh, G Kees, MD ; Xu, Feng, MS ; Scott, Rob, MD ; Wasserman, Scott M, MD ; Stein, Evan A, Prof
Subjects: Adolescent ; Adult ; Antibodies, Monoclonal - administration & dosage ; Antibodies, Monoclonal - adverse effects ; Anticholesteremic Agents - administration & dosage ; Anticholesteremic Agents - adverse effects ; Cholesterol ; Cholesterol, LDL - drug effects ; Cholesterol, LDL - metabolism ; Clinical trials ; Double-Blind Method ; Female ; Homozygote ; Humans ; Hyperlipoproteinemia Type II - blood ; Hyperlipoproteinemia Type II - drug therapy ; Hyperlipoproteinemia Type II - genetics ; Injections, Subcutaneous ; Internal Medicine ; Low density lipoprotein ; Male ; Middle Aged ; Mutation ; Proprotein Convertase 9 ; Proprotein Convertases - antagonists & inhibitors ; Serine Endopeptidases ; Statins ; Treatment Outcome ; Young Adult
Is Part Of: The Lancet (British edition), 2015-01, Vol.385 (9965), p.341-350
Description: Summary Background Homozygous familial hypercholesterolaemia is a rare, serious disorder caused by very low or absent plasma clearance of LDL, substantially raised LDL cholesterol, and accelerated development of cardiovascular disease. Conventional lipid-lowering treatments are modestly effective. Evolocumab, a monoclonal antibody to proprotein convertase subtilisin/kexin type 9 (PCSK9), reduced LDL cholesterol by 16% in a pilot study. We now report results with evolocumab in a randomised, double-blind, placebo-controlled phase 3 trial. Methods This randomised, double-blind, placebo-controlled phase 3 trial was undertaken at 17 sites in ten countries in North America, Europe, the Middle East, and South Africa. 50 eligible patients (aged ≥12 years) with homozygous familial hypercholesterolaemia, on stable lipid-regulating therapy for at least 4 weeks, and not receiving lipoprotein apheresis, were randomly allocated by a computer-generated randomisation sequence in a 2:1 ratio to receive subcutaneous evolocumab 420 mg or placebo every 4 weeks for 12 weeks. Randomisation was stratified by LDL cholesterol at screening (<11 mmol/L or ≥11 mmol/L) and implemented by a computerised interactive voice-response system. Patients, study personnel, and the funder were masked to treatment and to the efficacy results by the central laboratory not returning LDL cholesterol or any lipid results to the clinical sites after the baseline visit. The primary endpoint was percentage change in ultracentrifugation LDL cholesterol from baseline at week 12 compared with placebo, analysed by intention-to-treat. This trial is registered with ClinicalTrials.gov , number NCT01588496. Findings Of the 50 eligible patients randomly assigned to the two treatment groups, 49 actually received the study drug and completed the study (16 in the placebo group and 33 in the evolocumab group). Compared with placebo, evolocumab significantly reduced ultracentrifugation LDL cholesterol at 12 weeks by 30·9% (95% CI −43·9% to −18·0%; p<0·0001). Treatment-emergent adverse events occurred in ten (63%) of 16 patients in the placebo group and 12 (36%) of 33 in the evolocumab group. No serious clinical or laboratory adverse events occurred, and no anti-evolocumab antibody development was detected during the study. Interpretation In patients with homozygous familial hypercholesterolaemia receiving stable background lipid-lowering treatment and not on apheresis, evolocumab 420 mg administered every 4 weeks was well tolerated and significantly reduced LDL cholesterol compared with placebo. Funding Amgen Inc.
Publisher: England: Elsevier Ltd
Language: English
Identifier: ISSN: 0140-6736
EISSN: 1474-547X
DOI: 10.1016/S0140-6736(14)61374-X
PMID: 25282520
CODEN: LANCAO
Source: ProQuest One Psychology
MEDLINE
ProQuest Central

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Inhibition of PCSK9 with evolocumab in homozygous familial hypercholesterolaemia (TESLA Part B): a randomised, double-blind, placebo-controlled trial

Elsevier Ltd ;2015 Elsevier Ltd ;Copyright © 2015 Elsevier Ltd. All rights reserved. ;Copyright Elsevier Limited Jan 24, 2015 ;ISSN: 0140-6736 ;EISSN: 1474-547X ;DOI: 10.1016/S0140-6736(14)61374-X ;PMID: 25282520 ;CODEN: LANCAO

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