Effects of Evolocumab (AMG 145), a Monoclonal Antibody to PCSK9, in Hypercholesterolemic, Statin-Treated Japanese Patients at High Cardiovascular Risk

Hirayama, Atsushi; Honarpour, Narimon; Yoshida, Masayuki; Yamashita, Shizuya; Huang, Fannie; Wasserman, Scott M.; Teramoto, Tamio

doi:10.1253/circj.cj-14-0130

Cited by 96 publications

(83 citation statements)

References 33 publications

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“…Safety and tolerability profiles in the present study were consistent with previous studies of evolocumab6, 7, 8, 9, 10 and did not identify any risks. No anti‐evolocumab antibodies were detected in any participant.…”

Section: Discussionsupporting

confidence: 91%

Evaluation of Evolocumab (AMG 145), a Fully Human Anti‐PCSK9 IgG2 Monoclonal Antibody, in Subjects With Hepatic Impairment

Gibbs

Slatter

Egbuna

et al. 2016

The Journal of Clinical Pharma

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Evolocumab binds PCSK9, increasing low‐density lipoprotein cholesterol (LDL‐C) receptors and lowering LDL‐C. Target‐mediated evolocumab elimination is attributable to PCSK9 binding. As circulating PCSK9 and LDL‐C levels are primarily regulated by the liver, we compared evolocumab pharmacokinetics, pharmacodynamics, and safety in individuals with and without hepatic impairment. An open‐label, parallel‐group study evaluated the pharmacokinetics of evolocumab in hepatic‐impaired (Child‐Pugh Class A or B) or healthy adults. Participants were classified as having no, mild, or moderate hepatic impairment (n = 8/group) and received a single 140‐mg evolocumab dose. Assessments of unbound evolocumab and PCSK9 were made predose and postdose. Adverse events were monitored throughout the study. No significant association was observed between baseline PCSK9 and increasing level of hepatic impairment. No difference in extent and time course of PCSK9 or LDL‐C reduction was observed despite an apparent decrease in mean unbound evolocumab exposure with increasing hepatic impairment (Jonckheere‐Terpstra trend test; maximum serum concentration P = .18; area under the curve P = .09). Maximum reductions were observed in moderately impaired subjects vs healthy individuals: mean maximum serum concentration –34%; mean area under the concentration‐time curve (AUC) –47%. On average, unbound PCSK9 serum concentrations fell by >80% at 4 hours after a single evolocumab dose. Mean (95% confidence interval) maximum LDL‐C reductions in the healthy, mild, and moderate groups were –57% (–64% to –48%), –70% (–75% to –63%), and –53% (–61% to –43%), respectively. No safety risks were identified. These results support evolocumab use without dose adjustment in patients with active liver disease and mild or moderate hepatic impairment.

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Section: Discussionsupporting

confidence: 91%

Evaluation of Evolocumab (AMG 145), a Fully Human Anti‐PCSK9 IgG2 Monoclonal Antibody, in Subjects With Hepatic Impairment

Gibbs

Slatter

Egbuna

et al. 2016

The Journal of Clinical Pharma

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“…A total of 138 study arms from 35 studies were analyzed, comprising 45 539 patients (Table S1). 5, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43 Alirocumab was used in 18 studies (28 treatment arms), and evolocumab was used in 17 studies (39 treatment arms; Figure 1); placebo was the most common control used (52 control arms), with ezetimibe used in 17 arms, and standard therapy in 2 arms. Eight studies were of an exclusively FH population, and 5 studies included only patients intolerant to statins.…”

Section: Resultsmentioning

confidence: 99%

“…Intensive background statin therapy was defined as daily use of atorvastatin ≥40 mg, rosuvastatin ≥20 mg, simvastatin ≥80 mg, or any statin plus ezetimibe. For studies in Japanese populations,11, 12, 13, 14 a modified definition of intensive background statin therapy was used (atorvastatin ≥10 mg, pitavastatin ≥2 mg, rosuvastatin ≥5 mg, simvastatin ≥20 mg, lovastatin ≥40 mg, fluvastatin ≥80 mg, pravastatin ≥40 mg, or any statin plus ezetimibe). Studies were classified as familial hypercholesterolemia (FH) studies if inclusion criteria required diagnosis of FH by genotyping or clinical criteria.…”

Section: Methodsmentioning

confidence: 99%

Effect of PCSK9 Inhibitors on Clinical Outcomes in Patients With Hypercholesterolemia: A Meta‐Analysis of 35 Randomized Controlled Trials

Karatasakis

Danek

Karácsonyi

et al. 2017

JAHA

163

104

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BackgroundWe sought to examine the efficacy and safety of 2 PCSK9 (proprotein convertase subtilisin/kexin type 9) inhibitors: alirocumab and evolocumab.Methods and ResultsWe performed a systematic review and meta‐analysis of randomized controlled trials comparing treatment with and without PCSK9 inhibitors; 35 randomized controlled trials comprising 45 539 patients (mean follow‐up: 85.5 weeks) were included. Mean age was 61.0±2.8 years, and mean baseline low‐density lipoprotein cholesterol was 106±22 mg/dL. Compared with no PCSK9 inhibitor therapy, treatment with a PCSK9 inhibitor was associated with a lower rate of myocardial infarction (2.3% versus 3.6%; odds ratio [OR]: 0.72 [95% confidence interval (CI), 0.64–0.81]; P<0.001), stroke (1.0% versus 1.4%; OR: 0.80 [95% CI, 0.67–0.96]; P=0.02), and coronary revascularization (4.2% versus 5.8%; OR: 0.78 [95% CI, 0.71–0.86]; P<0.001). Overall, no significant change was observed in all‐cause mortality (OR: 0.71 [95% CI, 0.47–1.09]; P=0.12) or cardiovascular mortality (OR: 1.01 [95% CI, 0.85–1.19]; P=0.95). A significant association was observed between higher baseline low‐density lipoprotein cholesterol and benefit in all‐cause mortality (P=0.038). No significant change was observed in neurocognitive adverse events (OR: 1.12 [95% CI, 0.88–1.42]; P=0.37), myalgia (OR: 0.95 [95% CI, 0.75–1.20]; P=0.65), new onset or worsening of preexisting diabetes mellitus (OR: 1.05 [95% CI, 0.95–1.17]; P=0.32), and increase in levels of creatine kinase (OR: 0.84 [95% CI, 0.70–1.01]; P=0.06) or alanine or aspartate aminotransferase (OR: 0.96 [95% CI, 0.82–1.12]; P=0.61).ConclusionsTreatment with a PCSK9 inhibitor is well tolerated and improves cardiovascular outcomes. Although no overall benefit was noted in all‐cause or cardiovascular mortality, such benefit may be achievable in patients with higher baseline low‐density lipoprotein cholesterol.

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“…Evolocumab is a monoclonal antibody that inhibits PCSK9 and reduces LDL-C by $60% across populations and background therapies [12][13][14][15][16][17] . Evolocumab is currently indicated in the US as an adjunct to diet and maximally tolerated statin therapy for use in patients with heterozygous or homozygous familial hypercholesterolemia or clinical ASCVD who require additional lowering of LDL-C levels 18 . The Further Cardiovascular Outcomes Research With PCSK9 Inhibition in Subjects With Elevated Risk (FOURIER) trial is assessing the effect of evolocumab on the incidence of major CV events in patients with elevated LDL-C, clinically-event CVD, and additional CV risk factors 19 .…”

Section: Introductionmentioning

confidence: 99%

Estimated burden of cardiovascular disease and value-based price range for evolocumab in a high-risk, secondary-prevention population in the US payer context

Tóth

Danese²,

Villa

et al. 2017

Journal of Medical Economics

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Aim: To estimate real-world cardiovascular disease (CVD) burden and value-based price range of evolocumab for a US-context, high-risk, secondary-prevention population. Materials and methods: Burden of CVD was assessed using the UK-based Clinical Practice Research Datalink (CPRD) in order to capture complete CV burden including CV mortality. Patients on standard of care (SOC; high-intensity statins) in CPRD were selected based on eligibility criteria of FOURIER, a phase 3 CV outcomes trial of evolocumab, and categorized into four cohorts: high-risk prevalent atherosclerotic CVD (ASCVD) cohort (n ¼ 1448), acute coronary syndrome (ACS) (n ¼ 602), ischemic stroke (IS) (n ¼ 151), and heart failure (HF) (n ¼ 291) incident cohorts. The value-based price range for evolocumab was assessed using a previously published economic model. The model incorporated CPRD CV event rates and considered CV event reduction rate ratios per 1 mmol/L reduction in low-density lipoprotein-cholesterol (LDL-C) from a meta-analysis of statin trials by the Cholesterol Treatment Trialists Collaboration (CTTC), i.e. CTTC relationship. Results: Multiple-event rates of composite CV events (ACS, IS, or coronary revascularization) per 100 patient-years were 12.3 for the high-risk prevalent ASCVD cohort, and 25.7, 13.3, and 23.3, respectively, for incident ACS, IS, and HF cohorts. Approximately one-half (42%) of the high-risk ASCVD patients with a new CV event during follow-up had a subsequent CV event. Combining these real-world event rates and the CTTC relationship in the economic model, the value-based price range (credible interval) under a willingness-to-pay threshold of $150,000/quality-adjusted life-year gained for evolocumab was $11,990 ($9,341-$14,833) to $16,856 ($12,903-$20,678) in ASCVD patients with baseline LDL-C levels !70 mg/dL and !100 mg/dL, respectively. Conclusion: Real-world CVD burden is substantial. Using the observed CVD burden in CPRD and the CTTC relationship, the cost-effectiveness analysis showed that, accounting for uncertainties, the expected value-based price for evolocumab is higher than its current annual cost, as long as the payer discount off list price is greater than 20%. ARTICLE HISTORY

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Effects of Evolocumab (AMG 145), a Monoclonal Antibody to PCSK9, in Hypercholesterolemic, Statin-Treated Japanese Patients at High Cardiovascular Risk

Cited by 96 publications

References 33 publications

Evaluation of Evolocumab (AMG 145), a Fully Human Anti‐PCSK9 IgG2 Monoclonal Antibody, in Subjects With Hepatic Impairment

Evaluation of Evolocumab (AMG 145), a Fully Human Anti‐PCSK9 IgG2 Monoclonal Antibody, in Subjects With Hepatic Impairment

Effect of PCSK9 Inhibitors on Clinical Outcomes in Patients With Hypercholesterolemia: A Meta‐Analysis of 35 Randomized Controlled Trials

Estimated burden of cardiovascular disease and value-based price range for evolocumab in a high-risk, secondary-prevention population in the US payer context

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