RESUMEN
BACKGROUND: Dyslipidemia is a major modifiable risk factor for atherosclerotic cardiovascular disease. Current South African guidelines recommend titrating lipid-lowering therapy (LLT) to low-density lipoprotein cholesterol (LDL-C) targets stratified by cardiovascular risk. The LDL-C goal for very high-risk patients is <1.8 mmol/L. In international studies, approximately 30% of patients do not achieve this goal despite receiving maximally tolerated statin doses. There is, however, a paucity of data on LDL-C goal achievement in very high-risk South African patients receiving maximal statin doses. OBJECTIVE: The goal of the research it to assess LDL-C goal achievement in, and clinical characteristics of, very high cardiovascular risk dyslipidemic patients receiving maximal tolerated statin doses with or without ezetimibe. METHODS: This is an observational, cross-sectional South African registry study that plans to include up to 30 sites and 500 study participants. Adult patients with very high cardiovascular risk status receiving stable, maximally tolerated statin doses (with or without ezetimibe) will be eligible for inclusion. RESULTS: Funding has been awarded and enrollment began on November 15, 2017, and was completed on April 13, 2018, with 507 participants. Database lock was done on June 21, 2018. The statistical analysis has commenced and we expect the final clinical study report to be completed by October 2018. CONCLUSIONS: This study will document the adequacy of LLT in those at highest risk and will thus fill an important data gap in South Africa. This data may be useful in assessing the need for novel LLTs like proprotein convertase subtilisin/kexin 9 inhibitors that substantially lower cholesterol levels in addition to optimal statin therapy. REGISTERED REPORT IDENTIFIER: RR1-10.2196/9248.
RESUMEN
BACKGROUND: Alirocumab, a fully human monoclonal antibody to proprotein convertase subtilisin/kexin type 9, has been shown to provide significant reductions in low-density lipoprotein cholesterol (LDL-C). Data about its efficacy and safety in patients from South Korea and Taiwan are limited. OBJECTIVE: ODYSSEY KT assessed the efficacy and safety of alirocumab in patients from South Korea and Taiwan. METHODS: Patients with hypercholesterolemia at high cardiovascular risk who were on maximally tolerated statin were randomized (1:1) to alirocumab (75 mg every 2 weeks, with dose increase to 150 mg every 2 weeks at week 12 if LDL-C ≥70 mg/dL at week 8) or placebo for 24 weeks. The primary efficacy endpoint was percentage change in LDL-C from baseline to week 24. Safety was assessed throughout. RESULTS: At week 24, alirocumab changed LDL-C levels by -57.1% (placebo: +6.3%). In the alirocumab group, 9 patients (9.5%) received dose increase at week 12. At week 24, 85.8% of patients in the alirocumab group reached LDL-C <70 mg/dL (placebo: 14.2%; P ≤ .0001 vs placebo). Alirocumab significantly improved non-high-density lipoprotein cholesterol (non-HDL-C), apolipoprotein B, total cholesterol, lipoprotein (a), and HDL-C vs placebo (P ≤ .05). Two consecutive calculated LDL-C values <25 mg/dL were recorded in 27.8% of alirocumab-treated patients. Overall, 58.8% (alirocumab) and 61.8% (placebo) of patients experienced treatment-emergent adverse events; 2.1% and 1.0% discontinued treatment due to treatment-emergent adverse events, respectively. CONCLUSION: Alirocumab significantly improved LDL-C, apolipoprotein B, non-HDL-C, lipoprotein (a), HDL-C, and total cholesterol in Asian patients. Alirocumab was generally well tolerated. These findings are consistent with ODYSSEY findings to date.
Asunto(s)
Anticuerpos Monoclonales/uso terapéutico , Hipercolesterolemia/tratamiento farmacológico , Adulto , Anciano , Anticuerpos Monoclonales/efectos adversos , Anticuerpos Monoclonales/inmunología , Anticuerpos Monoclonales Humanizados , Apolipoproteínas B/sangre , HDL-Colesterol/sangre , LDL-Colesterol/sangre , Relación Dosis-Respuesta a Droga , Femenino , Humanos , Masculino , Persona de Mediana Edad , Efecto Placebo , Proproteína Convertasa 9/inmunología , República de Corea , Taiwán , Resultado del TratamientoRESUMEN
BACKGROUND: Patients with heterozygous familial hypercholesterolemia (HeFH) are characterized by elevated low-density lipoprotein cholesterol (LDL-C) levels. Long-term effects of proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibition have not been thoroughly investigated in these patients. OBJECTIVE: We evaluated efficacy and safety of alirocumab, a PCSK9 inhibitor, vs placebo in patients with HeFH. METHODS: In total, 1257 patients with HeFH on maximally tolerated statin ± other lipid-lowering therapies from four 78-week ODYSSEY trials were analyzed. In FH I and II, patients with baseline LDL-C levels ≥70/100 mg/dL (n = 735), depending on documented cardiovascular disease history, received placebo or alirocumab 75 mg every 2 weeks (Q2W; with dose increase to 150 mg Q2W at week 12 if week 8 LDL-C was ≥70 mg/dL). Separately, data were pooled from HIGH FH (baseline LDL-C ≥160 mg/dL) and patients with HeFH from LONG TERM (baseline LDL-C ≥70 mg/dL), where patients received placebo or alirocumab 150 mg Q2W (n = 522). RESULTS: At week 24, alirocumab reduced LDL-C levels by -48.8% (75/150 mg Q2W; placebo: +7.1%) and -55.0% (alirocumab 150 mg Q2W; placebo: +1.3%) (both P < .0001 vs placebo; intention-to-treat analysis). Least-squares mean LDL-C levels of 69.1 to 75.6 mg/dL (alirocumab 75/150 mg/dL Q2W; baseline: 141.3 mg/dL) and 72.2 to 82.3 mg/dL (alirocumab 150 mg Q2W; baseline: 168.4 mg/dL) were achieved at weeks 24 to 78 (on-treatment analysis). Additional beneficial effects were observed in other lipids. Treatment-emergent adverse event rates were similar in the alirocumab (80.5%) and placebo groups (83.0%). CONCLUSIONS: In this large cohort of patients with HeFH, alirocumab significantly reduced LDL-C levels. Alirocumab was generally well tolerated.