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Updated: Sep 27, 2025

A High-Throughput Luciferase Assay to Evaluate Proteolysis of the Single-Turnover Protease PCSK9
Published on: August 28, 2018
Innovative, centralised, multidisciplinary medicines optimisation clinic for PCSK9 inhibitors
Rani Khatib1,2,3, Mutiba Khan3, Abigail Barrowcliff3
1Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK r.khatib@leeds.ac.uk.
Background:
Proprotein convertase subtilisin/kexin type 9 inhibitors (PCSK9is) are an important but underutilised option to help optimise lipid management. We developed a new service to improve patient access to these medicines in line with National Institute for Health and Care Excellence recommendations. This paper describes the model and provides lipid-lowering results and feedback from the first 100 referred patients.
Methods:
The service is based on a centralised multidisciplinary clinic that is the sole prescriber of PCSK9i therapy in the area. Referred patients are assessed for eligibility and given tailored, person-centred support, education and monitoring to promote treatment adherence and lipids optimisation. The clinic also supports referred patients that do not meet PCSK9i eligibility criteria.
Results:
Among the first 100 patients referred (n=62 male; mean age: 62.9±10.5 years), 48 were initiated on PCSK9i therapy. Mean total cholesterol decreased from 7.7±1.6 mmol/L at baseline to 4.5±1.4 mmol/L at 3 months (41% reduction), while mean low-density lipoprotein-cholesterol (LDL-C) fell from 5.0±1.6 mmol/L to 2.1±1.3 mmol/L (58% reduction; p<0.0001) and median LDL-C decreased from 4.8 mmol/L to 1.6 mmol/L (67% reduction) over the same period. These decreases were maintained at 12 months (45%, 65% and 67% reductions, respectively; p<0.0001 for the decrease in mean LDL-C from baseline). Patient feedback on the clinic was positive and overall satisfaction was high.
Conclusions:
This innovative, person-centred, multidisciplinary service successfully initiated PCSK9i therapy for eligible patients and drove long-term monitoring, adherence and cholesterol lowering. It also provided medicines optimisation and adherence assistance to PCSK9i-ineligible patients. The model could be used in other areas to support better uptake and optimisation of PCSK9i therapy.
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