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Inhibition of PCSK9 with evolocumab modulates lipoproteins and monocyte activation in high-risk ASCVD subjects

ABSTRACT: Inhibition of PCSK9 with evolocumab modulates lipoproteins and monocyte activation in high-risk ASCVD subjects

PROVIDER: PRJNA1071588 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR27812200_1.fastq.gz	Fastqsanger.gz
	SRR27812200_2.fastq.gz	Fastqsanger.gz
	SRR27812300_1.fastq.gz	Fastqsanger.gz
	SRR27812300_2.fastq.gz	Fastqsanger.gz
	SRR27812201_1.fastq.gz	Fastqsanger.gz

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Project description:Abstract: BACKGROUND: Mechanistic studies suggest that proprotein convertase subtilisin/kexin type 9 monoclonal antibody inhibitors (PCSK9mAb) not only reduce low density lipoprotein cholesterol (LDL-C) but can also modulate inflammation. OBJECTIVES: This trial was designed to define the impact of evolocumab on circulating immune cell properties in high-risk ASCVD subjects. METHODS: Double-blind, placebo-controlled trial randomized 41 ASCVD subjects with type 2 diabetes with microalbuminuria and LDL-C level of >70 mg/dL on maximum tolerated statin therapy to receive either subcutaneous evolocumab 420 mg every 4 weeks or matching placebo. The primary outcomes were the change in lipoproteins, blood viscosity, and circulating immune cell transcriptional response at 2 weeks and 12 weeks with evolocumab compared with matching placebo. Safety was assessed in all subjects who received at least one dose of assigned treatment and analyses were conducted in the intention-to-treat population. RESULTS: All 41 randomized subjects completed the 2-week visit. Six subjects (4 evolocumab, 2 placebo) did not receive study medication consistently after the 2-week visit due to suspension of research activities during the COVID-19 pandemic. The groups were well-matched with respect to age, comorbidities, baseline LDL-C, white blood cell counts, and markers of systemic inflammation. Evolocumab reduced LDL-C by -68.8% (p<0.0001) and -52.8% (p<0.0001) at 2 and 12 weeks respectively. There were no differences in blood viscosity at baseline nor at 2 and 12 weeks. RNA-seq was performed on peripheral blood mononuclear cells (PBMC) with and without TLR4 stimulation (“Stress” transcriptomics). There were no group differences in transcriptional profiles in unstimulated PBMC; however, “stress” transcriptomics unmasked immune cell phenotypic differences between evolocumab and placebo groups at 2 and 12 weeks. CONCLUSIONS: This trial is the first to demonstrate that PCSK9 mAB with evolocumab can modulate circulating immune cell properties and highlights the importance of “stress” profiling of circulating immune cells that more clearly define immune contributions to ASCVD. (Funded by Amgen Inc.; ClinicalTrials.gov number, NCT03829046).

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Inhibition of PCSK9 with evolocumab modulates lipoproteins and monocyte activation in high-risk ASCVD subjects

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