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Arriaga-Cázares HE, Vega-Morales D, Moreno-Treviño CA, Juarez-Juarez JL, Pérez-Arizmendi CA, Martagón-Rosado AJ. Comparison of Two Strategies for Hypercholesterolemia Detection through Point-of-Care Testing. Diagnostics (Basel) 2024; 14:143. [PMID: 38248020 PMCID: PMC10814133 DOI: 10.3390/diagnostics14020143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/30/2023] [Accepted: 01/05/2024] [Indexed: 01/23/2024] Open
Abstract
BACKGROUND Childhood dyslipidemia is a common condition that can lead to atherosclerotic cardiovascular disease in adulthood. It is usually multifactorial. Screening for cholesterol disorders in children varies based on risk factors, with some guidelines recommending cascade screening for children with a clear family history of familial hypercholesterolemia, targeted screening for those with specific risk factors, and universal screening. Point-of-care testing (POCT) cholesterol tests offer potential advantages, including ease of use, portability, increased patient access, low cost, fewer medical or laboratory visits, and instant results. This study aimed to evaluate the effect of POCT cholesterol screening on the diagnosis of hypercholesterolemia in children in a family practice setting. METHODS We used a POCT cholesterol analyzer to perform two different (universal and targeted) screening approaches for dyslipidemia in children. We used the NCEP guidelines for the classification of the results. RESULTS We screened 183 children, 105 in the universal screening group and 78 in the targeted screening group. Eight patients in the targeted screening group had elevated cholesterol levels (p = 0.02). CONCLUSIONS All participants received instant feedback and recommendations. Using a targeted screening approach, POCT could be a practical and effective tool for identifying at-risk children with hypercholesterolemia.
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Affiliation(s)
- Héctor Eliud Arriaga-Cázares
- Instituto Mexicano del Seguro Social, Hospital de Traumatología y Ortopedia N.º 21, Monterrey 64000, Mexico
- Escuela de Medicina, Instituto Tecnológico y de Estudios Superiores de Monterrey, Monterrey 64849, Mexico
| | - David Vega-Morales
- Instituto Mexicano del Seguro Social, Hospital General de Zona 17, Monterrey 64420, Mexico;
| | - Carlos Alberto Moreno-Treviño
- Instituto Mexicano del Seguro Social, Unidad de Medicina Familiar 26, Monterrey 64117, Mexico; (C.A.M.-T.); (C.A.P.-A.)
| | - Juana Lorena Juarez-Juarez
- Instituto Mexicano del Seguro Social, Unidad de Medicina Familiar 26, Monterrey 64117, Mexico; (C.A.M.-T.); (C.A.P.-A.)
| | - Carlos Azael Pérez-Arizmendi
- Instituto Mexicano del Seguro Social, Unidad de Medicina Familiar 26, Monterrey 64117, Mexico; (C.A.M.-T.); (C.A.P.-A.)
| | - Alexandro J. Martagón-Rosado
- Escuela de Medicina, Instituto Tecnológico y de Estudios Superiores de Monterrey, Monterrey 64849, Mexico
- Institute for Obesity Research, Instituto Tecnologico y de Estudios Superiores de Monterrey, Monterrey 64849, Mexico
- Unidad de Investigación de Enfermedades Metabólicas, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México 14080, Mexico
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Tricou EP, Morgan KM, Betts M, Sturm AC. Genetic Testing for Familial Hypercholesterolemia in Clinical Practice. Curr Atheroscler Rep 2023; 25:197-208. [PMID: 37060538 DOI: 10.1007/s11883-023-01094-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/22/2023] [Indexed: 04/16/2023]
Abstract
PURPOSE OF REVIEW Genetic testing has proven utility in identifying and diagnosing individuals with FH. Here we outline the current landscape of genetic testing for FH, recommendations for testing practices and the efforts underway to improve access, availability, and uptake. RECENT FINDINGS Alternatives to the traditional genetic testing and counseling paradigm for FH are being explored including expanding screening programs, testing in primary care and/or cardiology clinics, leveraging electronic communication tools like chatbots, and implementing direct contact approaches to facilitate genetic testing of both probands and at-risk relatives. There is no consensus on if, when, and how genetic testing or accompanying genetic counseling should be provided for FH, though traditional genetic counseling and/or testing in specialty lipid clinics is often recommended in expert statements and professional guidelines. More evidence is needed to determine whether alternative approaches to the implementation of genetic testing for FH may be more effective.
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Affiliation(s)
| | - Kelly M Morgan
- Genomic Medicine Institute, Geisinger, Danville, PA, USA
| | - Megan Betts
- Genomic Medicine Institute, Geisinger, Danville, PA, USA
- Precision Medicine Center-Medical Group, WellSpan, York, PA, USA
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3
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Hassan BA, Liu ZA, Milicaj J, Kim MS, Tyson M, Sham YY, Taylor EA. Kinetic Characterization and Computational Modeling of Escherichia coli Heptosyltransferase II: Exploring the Role of Protein Dynamics in Catalysis for GT-B Glycosyltransferase. Biochemistry 2022; 61:1572-1584. [PMID: 35861590 DOI: 10.1021/acs.biochem.2c00329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Glycosyltransferase (GT) enzymes promote the formation of glycosidic bonds between a sugar molecule and a diversity of substrates. Heptosyltransferase II (HepII) is a GT involved in the lipopolysaccharide (LPS) biosynthetic pathway that transfers the seven-carbon sugar (l-glycero-d-manno-heptose, Hep) onto a lipid-anchored glycopolymer (heptosylated Kdo2-Lipid A, Hep-Kdo2-Lipid A, or HLA). LPS plays a key role in Gram-negative bacterial sepsis, biofilm formation, and host colonization, and as such, LPS biosynthetic enzymes are targets for novel antimicrobial therapeutics. Three heptosyltransferases are involved in the inner-core LPS biosynthesis, with Escherichia coli HepII being the last to be quantitatively characterized in vivo. HepII shares modest sequence similarity with heptosyltransferase I (HepI) while maintaining a high degree of structural homology. Here, we report the first kinetic and biophysical characterization of HepII and demonstrate the properties of HepII that are shared with HepI, including sugar donor promiscuity and sugar acceptor-induced secondary structural changes, which results in significant thermal stabilization. HepII also has an increased catalytic efficiency and a significantly tighter binding affinity for both of its substrates compared to HepI. A structural model of the HepII ternary complex, refined by molecular dynamics simulations, was developed to probe the potentially important substrate-protein contacts. Ligand binding-induced changes in Trp fluorescence in HepII enabled the determination of substrate dissociation constants. Combined, these efforts meaningfully enhance our understanding of the heptosyltransferase family of enzymes and will aid in future efforts to design novel, potent, and specific inhibitors for this family of enzymes.
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Affiliation(s)
- Bakar A Hassan
- Department of Chemistry, Wesleyan University, Middletown, Connecticut 06459, United States
| | - Zhiqi A Liu
- Department of Chemistry, Wesleyan University, Middletown, Connecticut 06459, United States
| | - Jozafina Milicaj
- Department of Chemistry, Wesleyan University, Middletown, Connecticut 06459, United States
| | - Mia S Kim
- Department of Chemistry, Wesleyan University, Middletown, Connecticut 06459, United States
| | - Meka Tyson
- Department of Chemistry, Wesleyan University, Middletown, Connecticut 06459, United States
| | - Yuk Y Sham
- Bioinformatics and Computational Biology Program, University of Minnesota, Minneapolis, Minnesota 55455, United States.,Department of Integrative Biology and Physiology, Medical School, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Erika A Taylor
- Department of Chemistry, Wesleyan University, Middletown, Connecticut 06459, United States
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4
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Silva L, Condon L, Qureshi N, Dutton B, Weng S, Kai J. Introducing genetic testing with case finding for familial hypercholesterolaemia in primary care: qualitative study of patient and health professional experience. Br J Gen Pract 2022; 72:e519-e527. [PMID: 35697509 PMCID: PMC9208733 DOI: 10.3399/bjgp.2021.0558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 01/17/2022] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Familial hypercholesterolaemia (FH) is a common inherited condition causing elevated cholesterol, premature heart disease, and early death. Although FH can be effectively treated, over 80% of people with FH remain undetected. AIM To explore patient and health professional experiences of introducing genetic testing with case finding for FH in primary care. DESIGN AND SETTING Qualitative study in UK general practice. METHOD Semi-structured interviews with a purposeful sample of 41 participants (24 patients and 17 health professionals) from eight practices, using an electronic case-finding tool (FAMCAT) to identify patients with higher likelihood of having FH and who were then offered diagnostic genetic testing in primary care. Data were analysed thematically. RESULTS While prior awareness of FH was low, patients were unsurprised to be identified as being at risk, and positive about being offered genetic testing by their practice. Patients not found to have FH were relieved, although some felt frustrated that their high cholesterol lacked a clear cause. Those confirmed to have FH largely expected and accepted this outcome. Practitioners saw detection of FH as an important new opportunity for preventive care. They found the case-finding tool easy to apply and noted patients' high uptake of genetic testing. While they were comfortable referring appropriate patients for further specialist management, GPs sought clearer definition about responsibility for identification and long- term care of FH in future care pathways. CONCLUSION Introducing genetic testing with electronic case finding for FH in primary care was positively experienced by patients and practitioners. Further development of this approach could help improve detection of FH in the general population.
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Affiliation(s)
- Luisa Silva
- Centre for Academic Primary Care, University of Nottingham, Nottingham
| | - Laura Condon
- Centre for Academic Primary Care, University of Nottingham, Nottingham
| | - Nadeem Qureshi
- Centre for Academic Primary Care, University of Nottingham, Nottingham
| | - Brittany Dutton
- Centre for Academic Primary Care, University of Nottingham, Nottingham
| | - Stephen Weng
- Centre for Academic Primary Care, University of Nottingham, Nottingham
| | - Joe Kai
- Centre for Academic Primary Care, University of Nottingham, Nottingham
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Fasano T, Trenti C, Negri EA, Guiducci V, Foracchia M, Bonelli E, Canovi S, Besutti G, Bertolini S, Calandra S. Search for familial hypercholesterolemia patients in an Italian community: A real-life retrospective study. Nutr Metab Cardiovasc Dis 2022; 32:577-585. [PMID: 35123858 DOI: 10.1016/j.numecd.2021.12.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 12/22/2021] [Accepted: 12/27/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND AIMS Familial hypercholesterolemia (FH) is a common inherited disorder of low-density lipoprotein (LDL) catabolism that causes elevated LDL-cholesterol (LDL-C) and premature atherosclerotic cardiovascular disease (ASCVD). Despite the availability of effective treatments, FH remains underdiagnosed and undertreated. The aims of the study were to identify putative FH subjects using data from laboratory and cardiology databases, genetically characterize suspected FH patients referred to the Lipid Clinic and monitor attainment of treatment goals in identified patients. METHODS AND RESULTS We retrieved the electronic health records of 221,644 individuals referred to laboratory for routine assessment and of 583 ASCVD patients (age ≤65) who underwent percutaneous transluminal coronary angioplasty (PTCA). We monitored the lipid profiles of subjects with LDL-C ≥ 250 mg/dl identified by laboratory survey (LS-P), PTCA patients and patients from the Lipid Clinic (LC-P). The laboratory survey identified 1.46% of subjects with LDL-C ≥ 190 mg/dl and 0.08% with LDL-C ≥ 250 mg/dl. Probable/definite FH was suspected in 3% of PTCA patients. Molecularly-confirmed FH was found in 44% of LC-P subjects. Five new LDLR mutations were identified. The 50% LDL-C reduction target was achieved by 70.6% of LC-P patients. Only 18.5% of PTCA patients reached the LDL-C < 55 mg/dl target. CONCLUSION By using a combined approach based on laboratory lipid profiles, documented ASCVD and Lipid Clinic data, we were able to identify subjects with a high probability of being FH. Attainment of LDL-C goals was largely suboptimal. Efforts are needed to improve FH detection and achievement of lipid targets.
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Affiliation(s)
- Tommaso Fasano
- Clinical Chemistry and Endocrinology Laboratory, Azienda USL - IRCCS di Reggio Emilia, Reggio Emilia, Italy.
| | - Chiara Trenti
- Department of Internal Medicine, Azienda USL - IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Emanuele A Negri
- Department of Internal Medicine, Azienda USL - IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Vincenzo Guiducci
- Interventional Cardiology Unit, Azienda USL - IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Marco Foracchia
- Information Technology Unit, Azienda USL - IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Efrem Bonelli
- Clinical Chemistry and Endocrinology Laboratory, Azienda USL - IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Simone Canovi
- Clinical Chemistry and Endocrinology Laboratory, Azienda USL - IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Giulia Besutti
- Radiology Unit, Azienda USL - IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Stefano Bertolini
- Department of Internal Medicine, University of Genova, Genova, Italy
| | - Sebastiano Calandra
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
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Qureshi N, Da Silva MLR, Abdul-Hamid H, Weng SF, Kai J, Leonardi-Bee J. Strategies for screening for familial hypercholesterolaemia in primary care and other community settings. Cochrane Database Syst Rev 2021; 10:CD012985. [PMID: 34617591 PMCID: PMC8495769 DOI: 10.1002/14651858.cd012985.pub2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
BACKGROUND Familial hypercholesterolaemia is a common inherited condition that is associated with premature cardiovascular disease. The increased cardiovascular morbidity and mortality, resulting from high levels of cholesterol since birth, can be prevented by starting lipid-lowering therapy. However, the majority of patients in the UK and worldwide remain undiagnosed. Established diagnostic criteria in current clinical practice are the Simon-Broome and Dutch Lipid Clinical network criteria and patients are classified as having probable, possible or definite familial hypercholesterolaemia. OBJECTIVES To assess the effectiveness of healthcare interventions strategies to systematically improve identification of familial hypercholesterolaemia in primary care and other community settings compared to usual care (incidental approaches to identify familial hypercholesterolaemia in primary care and other community settings). SEARCH METHODS We searched the Cochrane Inborn Errors of Metabolism Trials Register. Date of last search: 13 September 2021. We also searched databases (Cochrane Central Register of Controlled Trials (CENTRAL), Ovid MEDLINE, PubMed, Embase, CINAHL, Web of Science, and SCOPUS) as well as handsearching relevant conference proceedings, reference lists of included articles, and the grey literature. Date of last searches: 05 March 2020. SELECTION CRITERIA: As per the Effective Practice and Organisation of Care (EPOC) Group guidelines, we planned to include randomised controlled trials (RCTs), cluster-RCTs and non-randomised studies of interventions (NRSI). Eligible NRSI were non-randomised controlled trials, prospective cohort studies, controlled before-and-after studies, and interrupted-time-series studies. We planned to selected studies with healthcare interventions strategies that aimed to systematically identify people with possible or definite clinical familial hypercholesterolaemia, in primary care and other community settings. These strategies would be compared with usual care or no intervention. We considered participants of any age from the general population who access primary care and other community settings. DATA COLLECTION AND ANALYSIS Two authors planned to independently select studies according to the inclusion criteria, to extract data and assess for risk of bias and the certainty of the evidence (according to the GRADE criteria). We contacted corresponding study authors in order to obtain further information for all the studies considered in the review. MAIN RESULTS No eligible RCTs or NRSIs were identified for inclusion, however, we excluded 28 studies. AUTHORS' CONCLUSIONS Currently, there are no RCTs or controlled NRSI evidence to determine the most appropriate healthcare strategy to systematically identify possible or definite clinical familial hypercholesterolaemia in primary care or other community settings. Uncontrolled before-and-after studies were identified, but were not eligible for inclusion. Further studies assessing healthcare strategies of systematic identification of familial hypercholesterolaemia need to be conducted with diagnosis confirmed by genetic testing or validated through clinical phenotype (or both).
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Affiliation(s)
- Nadeem Qureshi
- Division of Primary Care, School of Medicine, University of Nottingham, Nottingham, UK
| | | | - Hasidah Abdul-Hamid
- Division of Primary Care, School of Medicine, University of Nottingham, Nottingham, UK
- Department of Primary Care Medicine, Faculty of Medicine, Universiti Teknologi MARA, Sungai Buloh, Malaysia
| | - Stephen F Weng
- Cardiovascular and Metabolism, Janssen Research & Development , High Wycombe , UK
| | - Joe Kai
- Division of Primary Care, School of Medicine, University of Nottingham, Nottingham, UK
| | - Jo Leonardi-Bee
- Centre for Evidence Based Healthcare, Division of Epidemiology and Public Health, Clinical Sciences Building Phase 2, University of Nottingham, Nottingham, UK
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7
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Arrobas Velilla T, Brea Á, Valdivielso P. Implantation of a biochemical and genetic screening programme for family hypercholesterolaemia. Collaboration between the clinical laboratory and lipid units: Design of the ARIAN Project. CLINICA E INVESTIGACION EN ARTERIOSCLEROSIS 2021; 33:289-295. [PMID: 34090714 DOI: 10.1016/j.arteri.2021.03.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/17/2021] [Accepted: 03/23/2021] [Indexed: 02/04/2023]
Abstract
INTRODUCTION AND OBJECTIVE Familial hypercholesterolaemia (FH) is the most common genetic disorder associated with premature coronary artery disease due to the presence of LDL-C cholesterol increased from birth. It is underdiagnosed and undertreated. The primary objective of the ARIAN project was to determine the number of patients diagnosed with FH after implementing a new screening procedure from the laboratory. MATERIAL AND METHODS This project was designed as a retrospective analysis by consulting the computer system. We selected from databases serum samples from patients ≥ 18 years with direct or calculated LDL-C>250mg/dL from 1 January 2017 to 31 December 2018. Once secondary causes had been ruled out, the requesting primary care physician was notified that their patient might have FH and to arrange a priority appointment in the lipid unit. All patients with a score of ≥ 6 points according to the Dutch Lipid Clinic Criteria were proposed for a genetic study RESULTS: By December 30th, 2020, 24 centres out of the initial 55 had submitted results. The number of patients analysed up to that point was 3,266,341, which represents 34% of the population served in those health areas (9,727,434). CONCLUSIONS The identification of new subjects with FH through this new strategy from the laboratory and their referral to lipid units should increase the number of patients treated in lipid units and initiate familial cascade screening.
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Affiliation(s)
- Teresa Arrobas Velilla
- Laboratorio de Nutrición y Riesgo Cardiovascular de Bioquímica Clínica, Unidad de Lípidos, Hospital Universitario Virgen de la Macarena, Sevilla, España.
| | - Ángel Brea
- Servicio de Medicina Interna y Unidad de Lípidos, Hospital San Pedro, Logroño, La Rioja, España
| | - Pedro Valdivielso
- Servicio de Medicina Interna y Unidad de Lípidos, Hospital Virgen de la Victoria, Instituto de Investigación Biomédica de Málaga, Universidad de Málaga, Málaga, España
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8
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Kalra S, Chen Z, Deerochanawong C, Shyu KG, Tan RS, Tomlinson B, Yeh HI. Familial Hypercholesterolemia in Asia Pacific: A Review of Epidemiology, Diagnosis, and Management in the Region. J Atheroscler Thromb 2021; 28:417-434. [PMID: 33746137 PMCID: PMC8193778 DOI: 10.5551/jat.56762] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 12/22/2020] [Indexed: 01/26/2023] Open
Abstract
Familial hypercholesterolemia (FH) is a common genetic disease that is estimated to affect at least 15 million people in the Asia Pacific region. Affected individuals are at significantly increased risk of premature atherosclerotic cardiovascular disease. A literature review was undertaken to provide an overview of the epidemiology, diagnosis, and management of FH across the region.Currently, epidemiological data relating to FH are lacking across the Asia Pacific. Of the 15 countries and regions considered, locally conducted studies to determine FH prevalence were only identified for Australia, China, India, and Japan. Although practically all national clinical guidelines for dyslipidemia include some commentary on FH, specific guidelines on the management of FH are available for only one third of the countries and regions evaluated. Estimates of current FH diagnosis rates suggest that most affected individuals remain undiagnosed and untreated. Although innovative medications such as proprotein convertase subtilisin/kexin type 9 inhibitors have been approved and are available in most countries and regions considered, they are currently reimbursed in only one quarter.Despite these shortcomings, there is cause for optimism. Early experience with cascade screening in Hong Kong, India, and Vietnam has proven an effective means of identifying family members of probands, as has a reverse screening of family members of children with FH in China. FH registries are gaining momentum across the region, with registries now established in almost half of the countries and regions evaluated. This review concludes with a Call to Action on FH for Asia Pacific to engage healthcare professionals, improve public awareness, and form national FH alliances, comprising all relevant healthcare professional organizations, as a platform to expedite national quality improvement programs in the management of FH.
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Affiliation(s)
- Sanjay Kalra
- Department of Endocrinology, Bharti Hospital, Karnal, India
| | - Zhenyue Chen
- Cardiology Department, Shanghai Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | | | - Kou-Gi Shyu
- Division of Cardiology, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
| | - Ru San Tan
- National Heart Centre Singapore, Duke-NUS Medical Singapore
| | - Brian Tomlinson
- Faculty of Medicine, Macau University of Science & Technology, Avenida Wai Long, Taipa, Macau, China
| | - Hung-I Yeh
- Departments of Internal Medicine and Medical Research, Mackay Memorial Hospital, Mackay Medical College, New Taipei City, Taiwan
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Silva L, Qureshi N, Abdul-Hamid H, Weng S, Kai J, Leonardi-Bee J. Systematic Identification of Familial Hypercholesterolaemia in Primary Care-A Systematic Review. J Pers Med 2021; 11:302. [PMID: 33920869 PMCID: PMC8071332 DOI: 10.3390/jpm11040302] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/24/2021] [Accepted: 04/10/2021] [Indexed: 12/19/2022] Open
Abstract
Familial hypercholesterolaemia (FH) is a common inherited cause of premature cardiovascular disease, but the majority of patients remain undiagnosed. The aim of this systematic review was to assess the effectiveness of interventions to systematically identify FH in primary care. No randomised, controlled studies were identified; however, three non-randomised intervention studies were eligible for inclusion. All three studies systematically identified FH using reminders (on-screen prompts) in electronic health records. There was insufficient evidence that providing comments on laboratory test results increased the identification of FH using the Dutch Lipid Clinic Network (DLCN) criteria. Similarly, using prompts combined with postal invitation demonstrated no significant increase in definite FH identification using Simon-Broome (SB) criteria; however, the identification of possible FH increased by 25.4% (CI 17.75 to 33.97%). Using on-screen prompts alone demonstrated a small increase of 0.05% (95% CI 0.03 to 0.07%) in identifying definite FH using SB criteria; however, when the intervention was combined with an outreach FH nurse assessment, the result was no significant increase in FH identification using a combination of SB and DLCN criteria. None of the included studies reported adverse effects associated with the interventions. Currently, there is insufficient evidence to determine which is the most effective method of systematically identifying FH in non-specialist settings.
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Affiliation(s)
- Luisa Silva
- Primary Care Stratified Medicine (PRISM) Group, NIHR School of Primary Care Research, University of Nottingham, Nottingham NG7 2RD, UK; (L.S.); (H.A.-H.); (S.W.); (J.K.)
| | - Nadeem Qureshi
- Primary Care Stratified Medicine (PRISM) Group, NIHR School of Primary Care Research, University of Nottingham, Nottingham NG7 2RD, UK; (L.S.); (H.A.-H.); (S.W.); (J.K.)
| | - Hasidah Abdul-Hamid
- Primary Care Stratified Medicine (PRISM) Group, NIHR School of Primary Care Research, University of Nottingham, Nottingham NG7 2RD, UK; (L.S.); (H.A.-H.); (S.W.); (J.K.)
- Department of Primary Care Medicine, Faculty of Medicine, Universiti Teknologi MARA, Sungai Buloh 47000, Malaysia
| | - Stephen Weng
- Primary Care Stratified Medicine (PRISM) Group, NIHR School of Primary Care Research, University of Nottingham, Nottingham NG7 2RD, UK; (L.S.); (H.A.-H.); (S.W.); (J.K.)
| | - Joe Kai
- Primary Care Stratified Medicine (PRISM) Group, NIHR School of Primary Care Research, University of Nottingham, Nottingham NG7 2RD, UK; (L.S.); (H.A.-H.); (S.W.); (J.K.)
| | - Jo Leonardi-Bee
- Centre for Evidence Based Healthcare, Division of Epidemiology and Public Health, School of Medicine, University of Nottingham, Nottingham NG7 2RD, UK;
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10
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Tada H, Takamura M, Kawashiri MA. Familial Hypercholesterolemia: A Narrative Review on Diagnosis and Management Strategies for Children and Adolescents. Vasc Health Risk Manag 2021; 17:59-67. [PMID: 33628029 PMCID: PMC7898200 DOI: 10.2147/vhrm.s266249] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 01/28/2021] [Indexed: 12/20/2022] Open
Abstract
Familial hypercholesterolemia (FH) is a relatively common inherited disorder caused by deleterious mutation(s) in the low-density lipoprotein (LDL) receptor or its associated genes. Given its nature as a heritable disease, any useful screening scheme, including universal, and cascade screening, allows for the early identification of patients with FH. Another important aspect to note is that early diagnosis associated with appropriate treatment can promote better prognosis. However, most clinical diagnostic criteria for adults have adopted clinical elements, such as physical xanthomas and family history, both of which are usually obscure and/or difficult to obtain in children and adolescents. Moreover, LDL cholesterol levels fluctuating considerably during adolescence, hindering the timely diagnosis of FH. In addition, recent advancements in human genetics have revealed several types of FH, including conventional monogenic FH, polygenic FH caused by common single nucleotide variations (SNV) accumulation associated with elevated LDL cholesterol, and oligogenic FH with multiple deleterious genetic variations leading to substantially elevated LDL cholesterol. The aforementioned findings collectively suggest the need for amassing information related to genetics and imaging, in addition to classical clinical elements, for the accurate diagnosis of FH in this era of personalized medicine. The current narrative review summarizes the current status of the clinical and genetic diagnosis of FH in children and adolescents, as well as provide useful management strategies for FH in children and adolescents based on currently available clinical evidence.
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Affiliation(s)
- Hayato Tada
- Department of Cardiology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Masayuki Takamura
- Department of Cardiology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Masa-Aki Kawashiri
- Department of Cardiology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
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11
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The lipid profile in children prior to isotretinoin therapy: an opportunity to detect familial hypercholesterolaemia. Pathology 2020; 53:288-290. [PMID: 33032808 DOI: 10.1016/j.pathol.2020.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 06/29/2020] [Accepted: 07/06/2020] [Indexed: 11/21/2022]
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12
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Pepplinkhuizen S, Ibrahim S, Vink R, Groot B, Stroes ES, Bax WA, Cornel JH. Electronic health records to facilitate continuous detection of familial hypercholesterolemia. Atherosclerosis 2020; 310:83-87. [DOI: 10.1016/j.atherosclerosis.2020.07.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 07/15/2020] [Accepted: 07/23/2020] [Indexed: 02/07/2023]
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Hu P, Dharmayat KI, Stevens CA, Sharabiani MT, Jones RS, Watts GF, Genest J, Ray KK, Vallejo-Vaz AJ. Prevalence of Familial Hypercholesterolemia Among the General Population and Patients With Atherosclerotic Cardiovascular Disease. Circulation 2020; 141:1742-1759. [DOI: 10.1161/circulationaha.119.044795] [Citation(s) in RCA: 155] [Impact Index Per Article: 38.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Background:
Contemporary studies suggest that familial hypercholesterolemia (FH) is more frequent than previously reported and increasingly recognized as affecting individuals of all ethnicities and across many regions of the world. Precise estimation of its global prevalence and prevalence across World Health Organization regions is needed to inform policies aiming at early detection and atherosclerotic cardiovascular disease (ASCVD) prevention. The present study aims to provide a comprehensive assessment and more reliable estimation of the prevalence of FH than hitherto possible in the general population (GP) and among patients with ASCVD.
Methods:
We performed a systematic review and meta-analysis including studies reporting on the prevalence of heterozygous FH in the GP or among those with ASCVD. Studies reporting gene founder effects and focused on homozygous FH were excluded. The search was conducted through Medline, Embase, Cochrane, and Global Health, without time or language restrictions. A random-effects model was applied to estimate the overall pooled prevalence of FH in the general and ASCVD populations separately and by World Health Organization regions.
Results:
From 3225 articles, 42 studies from the GP and 20 from populations with ASCVD were eligible, reporting on 7 297 363 individuals/24 636 cases of FH and 48 158 patients/2827 cases of FH, respectively. More than 60% of the studies were from Europe. Use of the Dutch Lipid Clinic Network criteria was the commonest diagnostic method. Within the GP, the overall pooled prevalence of FH was 1:311 (95% CI, 1:250–1:397; similar between children [1:364] and adults [1:303],
P
=0.60; across World Health Organization regions where data were available,
P
=0.29; and between population-based and electronic health records–based studies,
P
=0.82). Studies with ≤10 000 participants reported a higher prevalence (1:200–289) compared with larger cohorts (1:365–407;
P
<0.001). The pooled prevalence among those with ASCVD was 18-fold higher than in the GP (1:17 [95% CI, 1:12–1:24]), driven mainly by coronary artery disease (1:16; [95% CI, 1:12–1:23]). Between-study heterogeneity was large (
I
2
>95%). Tests assessing bias were nonsignificant (
P
>0.3).
Conclusions:
With an overall prevalence of 1:311, FH is among the commonest genetic disorders in the GP, similarly present across different regions of the world, and is more frequent among those with ASCVD. The present results support the advocacy for the institution of public health policies, including screening programs, to identify FH early and to prevent its global burden.
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Affiliation(s)
- Pengwei Hu
- Imperial Center for Cardiovascular Disease Prevention (P.H., K.I.D., C.A.T.S., K.K.R., A.J.V.-V.), Imperial College London, UK
- Department of Primary Care and Public Health (P.H., K.I.D., C.A.T.S., K.K.R., A.J.V.-V., M.T.A.S.), Imperial College London, UK
- Department of Health Service, Logistics University of People’s Armed Police Force, Tianjin, China (P.H.)
| | - Kanika I. Dharmayat
- Imperial Center for Cardiovascular Disease Prevention (P.H., K.I.D., C.A.T.S., K.K.R., A.J.V.-V.), Imperial College London, UK
- Department of Primary Care and Public Health (P.H., K.I.D., C.A.T.S., K.K.R., A.J.V.-V., M.T.A.S.), Imperial College London, UK
| | - Christophe A.T. Stevens
- Imperial Center for Cardiovascular Disease Prevention (P.H., K.I.D., C.A.T.S., K.K.R., A.J.V.-V.), Imperial College London, UK
- Department of Primary Care and Public Health (P.H., K.I.D., C.A.T.S., K.K.R., A.J.V.-V., M.T.A.S.), Imperial College London, UK
| | - Mansour T.A. Sharabiani
- Department of Primary Care and Public Health (P.H., K.I.D., C.A.T.S., K.K.R., A.J.V.-V., M.T.A.S.), Imperial College London, UK
| | - Rebecca S. Jones
- School of Public Health, and Charing Cross Campus Library (R.S.J.), Imperial College London, UK
| | - Gerald F. Watts
- School of Medicine, Faculty of Health and Medical Sciences, University of Western Australia, Perth (G.F.W.)
- Lipid Disorders Clinic, Department of Cardiology, Royal Perth Hospital, Australia (G.F.W.)
| | - Jacques Genest
- McGill University Health Center, Montreal, QC, Canada (J.G.)
| | - Kausik K. Ray
- Imperial Center for Cardiovascular Disease Prevention (P.H., K.I.D., C.A.T.S., K.K.R., A.J.V.-V.), Imperial College London, UK
- Department of Primary Care and Public Health (P.H., K.I.D., C.A.T.S., K.K.R., A.J.V.-V., M.T.A.S.), Imperial College London, UK
| | - Antonio J. Vallejo-Vaz
- Imperial Center for Cardiovascular Disease Prevention (P.H., K.I.D., C.A.T.S., K.K.R., A.J.V.-V.), Imperial College London, UK
- Department of Primary Care and Public Health (P.H., K.I.D., C.A.T.S., K.K.R., A.J.V.-V., M.T.A.S.), Imperial College London, UK
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14
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Elis A, Leventer-Roberts M, Bachrach A, Lieberman N, Durst R, Knobler H, Balicer R. The characteristics of patients with possible familial hypercholesterolemia-screening a large payer/provider healthcare delivery system. QJM 2020; 113:411-417. [PMID: 31883017 DOI: 10.1093/qjmed/hcz327] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 11/24/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Familial hypercholesterolemia (FH) is an under-diagnosed condition. AIM We applied standard laboratory criteria across a large longitudinal electronic medical record database to describe cross-sectional population with possible FH. METHODS A cross-sectional study of Clalit Health Services members. Subjects who met the General Population MED-PED laboratory criteria, excluding: age <10 years, documentation of thyroid, liver, biliary or autoimmune diseases, a history of chronic kidney disease stage 3 or greater, the presence of urine protein >300 mg/l, HDL-C>80 mg/dl, active malignancy or pregnancy at the time of testing were considered possible FH. Demographic and clinical characteristics are described at time of diagnosis and at a single index date following diagnosis to estimate the burden on the healthcare system. The patient population is also compared to the general population. RESULTS The study cohort included 12 494 subjects with out of over 4.5 million members of Clalit Health Services. The estimated prevalence of FH in Israel was found to be 1:285. These patients are notably positive for, and have a family history of, cardiovascular disease and risk factors. For most of them the LDL-C levels are not controlled, and only a quarter of them are medically treated. CONCLUSIONS By using the modified MED-PED criteria in a large electronic database, patients with possible FH can be identified enabling early intervention and treatment.
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Affiliation(s)
- A Elis
- Department of Internal Medicine, Beilinson Hospital, Rabin Medical Center, Petah Tikva, Israel
| | | | | | - N Lieberman
- Medical Policy Division, Clalit Health Services, Tel Aviv, Israel
| | - R Durst
- The Center for Research Prevention and Treatment of Atherosclerosis, Hadassah Hebrew University Medical Center, Jerusalem, Israel
| | - H Knobler
- The Institute of Diabetes, Endocrinology, and Metabolism, Kaplan Medical Center, Rehovot, Israel
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15
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Alonso R, Perez de Isla L, Muñiz-Grijalvo O, Mata P. Barriers to Early Diagnosis and Treatment of Familial Hypercholesterolemia: Current Perspectives on Improving Patient Care. Vasc Health Risk Manag 2020; 16:11-25. [PMID: 32021224 PMCID: PMC6957097 DOI: 10.2147/vhrm.s192401] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 12/28/2019] [Indexed: 12/18/2022] Open
Abstract
Familial hypercholesterolemia (FH) is a frequent disorder associated with premature atherosclerotic cardiovascular disease. Different clinical diagnosis criteria are available, and cost of genetic testing has been reduced in the last years; however, most cases are not diagnosed worldwide. Patients with FH are at high cardiovascular risk and the risk can be reduced with lifelong lifestyle and pharmacological treatment. Statins and ezetimibe are available as generic drugs in most countries reducing the cost of treatment. However, the use of high-intensity statins combined with ezetimibe and PCSK9 inhibitors, if necessary, is low for different reasons that contribute to a high number of patients not reaching LDL-C targets according to guidelines. On the other hand, cardiovascular risk varies greatly in families with FH; therefore, risk stratification strategies including cardiovascular imaging is another element to consider for improving care and management of FH. There are numerous barriers depending on the awareness, knowledge, perception of risk, management and care of patients living with FH that impact in the diagnosis and treatment of the disorder. In this contemporary review, we analyze different barriers in the diagnosis and care of patients to improve patients’ care and prevention of atherosclerotic cardiovascular disease and describe recent advances and strategies to improve the gaps in the care of FH, including global collaboration and advocacy.
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Affiliation(s)
- Rodrigo Alonso
- Department of Nutrition, Clínica Las Condes, Santiago, Chile.,Fundación Hipercolesterolemia Familiar, Madrid, Spain
| | | | | | - Pedro Mata
- Fundación Hipercolesterolemia Familiar, Madrid, Spain
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16
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Familial Hypercholesterolaemia in 2020: A Leading Tier 1 Genomic Application. Heart Lung Circ 2019; 29:619-633. [PMID: 31974028 DOI: 10.1016/j.hlc.2019.12.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 11/26/2019] [Accepted: 12/03/2019] [Indexed: 12/15/2022]
Abstract
Familial hypercholesterolaemia (FH) is caused by a major genetic defect in the low-density lipoprotein (LDL) clearance pathway. Characterised by LDL-cholesterol elevation from birth, FH confers a significant risk for premature coronary artery disease (CAD) if overlooked and untreated. With risk exposure beginning at birth, early detection and intervention is crucial for the prevention of CAD. Lowering LDL-cholesterol with lifestyle and statin therapy can reduce the risk of CAD. However, most individuals with FH will not reach guideline recommended LDL-cholesterol targets. FH has an estimated prevalence of approximately 1:250 in the community. Multiple strategies are required for screening, diagnosing and treating FH. Recent publications on FH provide new data for developing models of care, including new therapies. This review provides an overview of FH and outlines some recent advances in the care of FH for the prevention of CAD in affected families. The future care of FH in Australia should be developed within the context of the National Health Genomics Policy Framework.
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17
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Kutkiene S, Petrulioniene Z, Laucevicius A, Cerkauskiene R, Staigyte J, Saulyte A, Petrulionyte E, Gargalskaite U, Skiauteryte E, Matuzeviciene G, Kovaite M, Rinkuniene E. Lipid profile evaluation and severe hypercholesterolaemia screening in the middle-aged population according to nationwide primary prevention programme in Lithuania. Atherosclerosis 2019; 277:267-272. [PMID: 30270057 DOI: 10.1016/j.atherosclerosis.2018.06.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Revised: 05/29/2018] [Accepted: 06/07/2018] [Indexed: 10/28/2022]
Abstract
BACKGROUND AND AIMS Cardiovascular disease (CVD) is a major cause of premature death in Lithuania where abnormal lipid levels are very common among middle-aged adults. The aim of this study was to evaluate lipid profile in middle-aged Lithuanians and perform population-based severe hypercholesterolaemia (SH) screening. METHODS This study included men aged 40-54 and women aged 50-64 years without overt CVD, participating in the Lithuanian High Cardiovascular Risk (LitHiR) primary prevention programme during the period 2009-2016. Lipidograms of 92,373 adults (58.4% women and 41.6% men) included in the database were analysed and screening for SH was performed. RESULTS The mean levels of total cholesterol, LDL cholesterol (LDL-C) and triglycerides (TG) among participants were 6.08 mmol/l, 3.87 mmol/l, and 1.59 mmol/l, respectively. Any type of dyslipidaemia was present in 89.7%, and severe dyslipidaemia in 13.4% of the study population. 80.2% of adults without overt CVD had LDL-C ≥3 mmol/l. SH (LDL-C ≥6 mmol/l) was detected in 3.2% of study participants. Prevalence of SH decreased from 2.91% to 2.82% during the period 2009-2016 (p for trend = 0.003). LDL-C ≥6.5 mmol/l was observed in 1.5% of subjects while both LDL-C ≥6.5 mmol/l, and TG ≤ 1.7 mmol/l was found in 0.6% of subjects. CONCLUSIONS SH was present in 3.2% of the middle-aged population without overt CVD. Slightly decreasing prevalence of SH was observed during the period 2009-2016 in Lithuania. Likely phenotypic familial hypercholesterolaemia was observed in 1.5% of middle-aged Lithuanians. Further clinical and genetic evaluation of people with SH is needed to detect familial forms of SH.
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Affiliation(s)
- Sandra Kutkiene
- Vilnius University, Faculty of Medicine, Clinic of Cardiac and Vascular Diseases, Santariskiu str. 2, LT-08661, Vilnius, Lithuania; Vilnius University, Faculty of Medicine, M. K. Ciurlionio str. 21, 03101, Vilnius, Lithuania; Vilnius University Hospital Santaros Klinikos, Santariskiu str. 2, 08661, Vilnius, Lithuania.
| | - Zaneta Petrulioniene
- Vilnius University, Faculty of Medicine, Clinic of Cardiac and Vascular Diseases, Santariskiu str. 2, LT-08661, Vilnius, Lithuania; Vilnius University, Faculty of Medicine, M. K. Ciurlionio str. 21, 03101, Vilnius, Lithuania; Vilnius University Hospital Santaros Klinikos, Santariskiu str. 2, 08661, Vilnius, Lithuania
| | - Aleksandras Laucevicius
- Vilnius University, Faculty of Medicine, Clinic of Cardiac and Vascular Diseases, Santariskiu str. 2, LT-08661, Vilnius, Lithuania; Vilnius University, Faculty of Medicine, M. K. Ciurlionio str. 21, 03101, Vilnius, Lithuania; Vilnius University Hospital Santaros Klinikos, Santariskiu str. 2, 08661, Vilnius, Lithuania
| | - Rimante Cerkauskiene
- Children's Hospital, Vilnius University Hospital Santaros Klinikos, Santariskiu str. 7, LT-08406, Vilnius, Lithuania; Vilnius University, Faculty of Medicine, M. K. Ciurlionio str. 21, 03101, Vilnius, Lithuania
| | - Justina Staigyte
- Vilnius University, Faculty of Medicine, M. K. Ciurlionio str. 21, 03101, Vilnius, Lithuania
| | - Akvile Saulyte
- Vilnius University, Faculty of Medicine, M. K. Ciurlionio str. 21, 03101, Vilnius, Lithuania
| | - Emilija Petrulionyte
- Vilnius University, Faculty of Medicine, M. K. Ciurlionio str. 21, 03101, Vilnius, Lithuania
| | - Urte Gargalskaite
- Vilnius University, Faculty of Medicine, M. K. Ciurlionio str. 21, 03101, Vilnius, Lithuania; Vilnius University Hospital Santaros Klinikos, Santariskiu str. 2, 08661, Vilnius, Lithuania
| | - Egle Skiauteryte
- Vilnius University, Faculty of Medicine, M. K. Ciurlionio str. 21, 03101, Vilnius, Lithuania; Vilnius University Hospital Santaros Klinikos, Santariskiu str. 2, 08661, Vilnius, Lithuania
| | - Gabija Matuzeviciene
- Vilnius University, Faculty of Medicine, M. K. Ciurlionio str. 21, 03101, Vilnius, Lithuania; Vilnius University Hospital Santaros Klinikos, Santariskiu str. 2, 08661, Vilnius, Lithuania
| | - Milda Kovaite
- Vilnius University Hospital Santaros Klinikos, Santariskiu str. 2, 08661, Vilnius, Lithuania
| | - Egidija Rinkuniene
- Vilnius University, Faculty of Medicine, Clinic of Cardiac and Vascular Diseases, Santariskiu str. 2, LT-08661, Vilnius, Lithuania; Vilnius University, Faculty of Medicine, M. K. Ciurlionio str. 21, 03101, Vilnius, Lithuania; Vilnius University Hospital Santaros Klinikos, Santariskiu str. 2, 08661, Vilnius, Lithuania
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18
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Mirzaee S, Choy KW, Doery JCG, Zaman S, Cameron JD, Nasis A. The tertiary hospital laboratory; a novel avenue of opportunistic screening of familial hypercholesterolemia. IJC HEART & VASCULATURE 2019; 23:100354. [PMID: 31080874 PMCID: PMC6503163 DOI: 10.1016/j.ijcha.2019.100354] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Revised: 03/09/2019] [Accepted: 03/24/2019] [Indexed: 11/03/2022]
Abstract
Background Familial hypercholesterolemia (FH) is a common monogenic hereditary lipid disorder characterised by increased serum low-density lipoprotein cholesterol (LDL-cholesterol) concentrations and high risk of premature atherosclerotic cardiovascular disease. The prevalence of FH identified in a tertiary hospital laboratory was investigated by performing an opportunistic screen for index cases. Methods The prevalence of likely FH based on LDL-cholesterol thresholds >4.9 mmol/L as employed by the Dutch Lipid Clinic Network Criteria (DLCNC) score was evaluated retrospectively in a single tertiary hospital laboratory over a six-month period (July to December 2016). Results 4943 lipid profiles screened, 106 patients (mean age 53.2 ± 12.9 and 41% male) had LDL-cholesterol of >4.9 mmol/L after exclusion of 5 patients (0.1%) with secondary causes. Possible (n = 90) and probable/definite (n = 16) FH according to DLCNC score was seen in 1.8% and 0.4% of the overall screened population, respectively. Conclusions Point prevalence of screening for FH in patients undergoing lipid profile testing in a tertiary hospital laboratory was comparable with prevalence of FH in general population (based on 1 in 200-250). This supports the benefit of establishing an efficient "alert system" in conjunction with a trigger "reflex testing" to facilitate further formal FH scoring and exclusion of possible secondary causes of hyperlipidemia in potential index FH.
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Key Words
- AHA, American Heart Association
- APO-B, Apolipoprotein-B
- ASCVD, Atherosclerotic cardiovascular disease
- CAD, Coronary artery disease
- DLCNC, Dutch Lipid Clinic Network Criteria
- FH
- FH, Familial hypercholesterolemia
- Familial hypercholesterolemia
- HDL-C, High density lipoprotein cholesterol
- HIV, Human immunodeficiency virus
- LDL-R, Low density lipoprotein receptor
- LDL-cholesterol, Low-density lipoprotein cholesterol
- Opportunistic screening
- PCSK-9, Proprotein convertase subtilisin/kexin type-9
- Tertiary hospital laboratory
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Affiliation(s)
- Sam Mirzaee
- Monash Cardiovascular Research Centre, MonashHEART, Monash Health, Monash University, Melbourne, Australia
| | - Kay W Choy
- Monash Health Pathology, Monash Health, Monash University, Melbourne, Australia
| | - James C G Doery
- Monash Health Pathology, Monash Health, Monash University, Melbourne, Australia
| | - Sarah Zaman
- Monash Cardiovascular Research Centre, MonashHEART, Monash Health, Monash University, Melbourne, Australia
| | - James D Cameron
- Monash Cardiovascular Research Centre, MonashHEART, Monash Health, Monash University, Melbourne, Australia
| | - Arthur Nasis
- Monash Cardiovascular Research Centre, MonashHEART, Monash Health, Monash University, Melbourne, Australia
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19
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Arnous MM, Alghamdi AM, Ghoraba MA. Assessment of family physicians' awareness and knowledge of familial hypercholesterolemia in governmental hospitals in Riyadh, Saudi Arabia. J Family Med Prim Care 2019; 8:1981-1986. [PMID: 31334166 PMCID: PMC6618226 DOI: 10.4103/jfmpc.jfmpc_285_19] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Background Familial Hypercholesterolemia (FH) is an inherited and complex multifactorial disease that can lead to early onset of coronary artery disease (CAD). Diagnosis, treatment, and management of FH require a well-trained physician with high awareness of the disease and different risk factors to avoid complications. Materials and Methods This cross-sectional study evaluated family physicians' awareness and knowledge of FH using self-administered questionnaires in governmental hospitals in Riyadh, Saudi Arabia, during 2018. Results A total of 225 family physicians completed the questionnaire, with a response rate of 58.4%. The mean age of respondents was 31.3 years and more than 59.1% were men. Although 72.4% of physicians rated their familiarity with FH as average and above, 48.4% of all participants had poor FH knowledge, while only 51.6% had acceptable FH knowledge. About 65.8% of physicians reported that they routinely take a detailed family history, perform a physical examination, and screen close relatives. Awareness of various clinical algorithms for diagnosis of patients with FH was very low at 52.0%. The mean FH knowledge and familiarity scores were significantly higher (P < 0.001) among participants who were older, had higher training levels, or longer years in practice. Conclusions The current study revealed significant deficits in FH familiarity, awareness, knowledge, and practice among Saudi physicians. FH educational programs directed at all physicians involved in FH patients' management are necessary to improve physicians' knowledge of all aspects of FH management, including the importance of a mechanism for identifying people at risk for a genetic condition by a process of systematic family tracing.
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Affiliation(s)
| | | | - Medhat A Ghoraba
- Department of Family Medicine, Security Forces Hospital, Riyadh, Saudi Arabia
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20
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Lan NSR, Martin AC, Brett T, Watts GF, Bell DA. Improving the detection of familial hypercholesterolaemia. Pathology 2018; 51:213-221. [PMID: 30579649 DOI: 10.1016/j.pathol.2018.10.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 10/15/2018] [Accepted: 10/15/2018] [Indexed: 02/03/2023]
Abstract
Familial hypercholesterolaemia (FH) is a dominantly inherited disorder of low-density lipoprotein (LDL) catabolism, which if untreated causes lifelong elevated LDL-cholesterol (LDL-c), accelerated atherosclerosis and premature cardiovascular disease. Recent evidence suggests the prevalence of heterozygous FH is ∼1:220, making FH the most common autosomal dominant condition. Lowering LDL-c with statin and lifestyle therapy reduces the risk of cardiovascular events. Furthermore, proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitors significantly lower LDL-c in addition to statin therapy, and early outcome data suggest improved vascular outcomes with these agents in FH patients in addition to statins. However, the vast majority of people with FH still remain undiagnosed. The onus is on clinicians to identify kindreds with FH, as PCSK9 inhibitors, although expensive, are funded for patients with FH in Australia. Multiple strategies for detecting FH have been proposed. The detection of index cases can be achieved through applying electronic screening tools to general practice databases, universal screening of children during immunisation, and targeted screening of patients with premature cardiovascular disease. Advances in genomic technology have decreased costs of genetic testing, improved the understanding of the pathogenesis of FH and facilitated cascade screening. However, awareness of FH amongst clinicians and the general public still requires optimisation. This review outlines recent advances in FH detection, including emerging strategies and challenges for the next decade.
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Affiliation(s)
- Nick S R Lan
- Department of Endocrinology and Diabetes, Fiona Stanley Hospital, Murdoch, WA, Australia
| | - Andrew C Martin
- Department of General Paediatrics, Perth Children's Hospital, Nedlands, WA, Australia
| | - Tom Brett
- Department of General Practice and Primary Health Care Research, School of Medicine, The University of Notre Dame Australia, Fremantle, WA, Australia
| | - Gerald F Watts
- Faculty of Health and Medical Sciences, School of Medicine, The University of Western Australia, Crawley, WA, Australia; Department of Cardiology, Lipid Disorders Clinic, Cardiometabolic Service, Royal Perth Hospital, Perth, WA, Australia
| | - Damon A Bell
- Faculty of Health and Medical Sciences, School of Medicine, The University of Western Australia, Crawley, WA, Australia; Department of Cardiology, Lipid Disorders Clinic, Cardiometabolic Service, Royal Perth Hospital, Perth, WA, Australia; Department of Clinical Biochemistry, PathWest Laboratory Medicine, Royal Perth Hospital, Perth, WA, Australia; Department of Clinical Biochemistry, Australian Clinical Laboratories, Perth, WA, Australia.
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21
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Petrulioniene Z, Gargalskaite U, Kutkiene S, Staigyte J, Cerkauskiene R, Laucevicius A. Establishing a national screening programme for familial hypercholesterolaemia in Lithuania. Atherosclerosis 2018; 277:407-412. [DOI: 10.1016/j.atherosclerosis.2018.06.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 05/15/2018] [Accepted: 06/07/2018] [Indexed: 12/27/2022]
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22
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Brett T, Qureshi N, Gidding S, Watts GF. Screening for familial hypercholesterolaemia in primary care: Time for general practice to play its part. Atherosclerosis 2018; 277:399-406. [DOI: 10.1016/j.atherosclerosis.2018.08.019] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 08/16/2018] [Accepted: 08/21/2018] [Indexed: 12/21/2022]
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23
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Qureshi N, Weng SF, Tranter JA, Da Silva ML, Kai J, Leonardi-Bee J. Strategies for identifying familial hypercholesterolaemia in non-specialist clinical settings. Hippokratia 2018. [DOI: 10.1002/14651858.cd012985] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Nadeem Qureshi
- University of Nottingham; Division of Primary Care, School of Medicine; University Park Nottingham UK NG7 2RD
| | - Stephen F Weng
- University of Nottingham; Division of Primary Care, School of Medicine; University Park Nottingham UK NG7 2RD
| | | | - Maria L Da Silva
- University of Nottingham; Division of Primary Care; Nottingham UK
| | - Joe Kai
- University of Nottingham; Division of Primary Care, School of Medicine; University Park Nottingham UK NG7 2RD
| | - Jo Leonardi-Bee
- The University of Nottingham; Division of Epidemiology and Public Health; Clinical Sciences Building Nottingham City Hospital NHS Trust Campus, Hucknall Road Nottingham UK NG5 1PB
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24
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Scicali R, Di Pino A, Platania R, Purrazzo G, Ferrara V, Giannone A, Urbano F, Filippello A, Rapisarda V, Farruggia E, Piro S, Rabuazzo AM, Purrello F. Detecting familial hypercholesterolemia by serum lipid profile screening in a hospital setting: Clinical, genetic and atherosclerotic burden profile. Nutr Metab Cardiovasc Dis 2018; 28:35-43. [PMID: 28958694 DOI: 10.1016/j.numecd.2017.07.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 07/04/2017] [Accepted: 07/10/2017] [Indexed: 12/27/2022]
Abstract
BACKGROUND AND AIMS Familial hypercholesterolemia (FH) is underdiagnosed and public cholesterol screening may be useful to find new subjects. In this study, we aim to investigate the prevalence of FH patients in a hospital screening program and evaluate their atherosclerotic burden using intima-media thickness (IMT). METHODS AND RESULTS We screened 1575 lipid profiles and included for genetic analysis adults with a low-density lipoprotein (LDL) cholesterol >190 mg/dL and triglycerides <200 mg/dL and first-degree child relatives with LDL cholesterol >160 mg/dL and triglycerides <200 mg/dL. The diagnosis of FH was presumed by Dutch Lipid Clinic Network (DLCN) criteria and confirmed by the presence of the genetic variant. Mean common carotid intima-media thickness (IMT) was assessed using consensus criteria. After confirming LDL cholesterol value and excluding secondary hypercholesterolemia, 56 subjects with a DLCN ≥4 performed genetic analysis. Of these, 26 had an FH genetic variant. The proportion of patients with a mutation having a DLCN score of 6-8 was 75%; in individuals with a DLCN score >8 it was 100%. Mean IMT was higher in FH patients compared to non FH (0.73 [0.61-0.83] vs 0.71 [0.60-0.75] mm, p < 0.01). Moreover, we detected two mutations not previously described. Finally, simple regression analysis showed a correlation of IMT with LDL cholesterol >190 mg/dL and corneal arcus (p < 0.01 and p < 0.001, respectively). CONCLUSIONS A hospital screening was useful to detect FH subjects with increased atherosclerosis. Also, next-generation sequencing was able to detect new FH mutations.
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Affiliation(s)
- R Scicali
- Department of Clinical and Experimental Medicine, University of Catania, Italy
| | - A Di Pino
- Department of Clinical and Experimental Medicine, University of Catania, Italy
| | - R Platania
- Department of Clinical and Experimental Medicine, University of Catania, Italy
| | - G Purrazzo
- Department of Clinical and Experimental Medicine, University of Catania, Italy
| | - V Ferrara
- Department of Clinical and Experimental Medicine, University of Catania, Italy
| | - A Giannone
- Department of Clinical and Experimental Medicine, University of Catania, Italy
| | - F Urbano
- Department of Clinical and Experimental Medicine, University of Catania, Italy
| | - A Filippello
- Department of Clinical and Experimental Medicine, University of Catania, Italy
| | - V Rapisarda
- Department of Clinical and Experimental Medicine, Section of Occupational Medicine, University of Catania, Italy
| | - E Farruggia
- Occupational Medicine Division, Garibaldi Hospital of Catania, Catania, Italy
| | - S Piro
- Department of Clinical and Experimental Medicine, University of Catania, Italy
| | - A M Rabuazzo
- Department of Clinical and Experimental Medicine, University of Catania, Italy
| | - F Purrello
- Department of Clinical and Experimental Medicine, University of Catania, Italy.
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Pang J, Hu M, Lin J, Miida T, Nawawi HM, Park JE, Wu X, Ramli AS, Kim NT, Kwok S, Gonzalez-Santos LE, Su TC, Truong TH, Soran H, Yamashita S, Tomlinson B, Watts GF. An enquiry based on a standardised questionnaire into knowledge, awareness and preferences concerning the care of familial hypercholesterolaemia among primary care physicians in the Asia-Pacific region: the "Ten Countries Study". BMJ Open 2017; 7:e017817. [PMID: 29074516 PMCID: PMC5665281 DOI: 10.1136/bmjopen-2017-017817] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
OBJECTIVE To determine physicians' knowledge, awareness and preferences regarding the care of familial hypercholesterolaemia (FH) in the Asia-Pacific region. SETTING A formal questionnaire was anonymously completed by physicians from different countries/regions in the Asia-Pacific. The survey sought responses relating to general familiarity, awareness of management guidelines, identification (clinical characteristics and lipid profile), prevalence and inheritance, extent of elevation in risk of cardiovascular disease (CVD) and practice on screening and treatment. PARTICIPANTS Practising community physicians from Australia, Japan, Malaysia, South Korea, Philippines, Hong Kong, China, Vietnam and Taiwan were recruited to complete the questionnaire, with the UK as the international benchmark. PRIMARY OUTCOME An assessment and comparison of the knowledge, awareness and preferences of FH among physicians in 10 different countries/regions. RESULTS 1078 physicians completed the questionnaire from the Asia-Pacific region; only 34% considered themselves to be familiar with FH. 72% correctly described FH and 65% identified the typical lipid profile, with a higher proportion of physicians from Japan and China selecting the correct FH definition and lipid profile compared with those from Vietnam and Philippines. However, less than half of the physician were aware of national or international management guidelines; this was significantly worse than physicians from the UK (35% vs 61%, p<0.001). Knowledge of prevalence (24%), inheritability (41%) and CVD risk (9%) of FH were also suboptimal. The majority of the physicians considered laboratory interpretative commenting as being useful (81%) and statin therapy as an appropriate cholesterol-lowering therapy (89%) for FH management. CONCLUSIONS The study identified important gaps, which are readily addressable, in the awareness and knowledge of FH among physicians in the region. Implementation of country-specific guidelines and extensive work in FH education and awareness programmes are imperative to improve the care of FH in the region.
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Affiliation(s)
- Jing Pang
- School of Medicine, Faculty of Health and Medical Sciences, University of Western Australia, Perth, Australia
| | - Miao Hu
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Jie Lin
- Department of Atherosclerosis, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China
| | - Takashi Miida
- Department of Clinical Laboratory Medicine, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Hapizah M Nawawi
- Institute for Pathology, Laboratory and Forensic Medicine (I-PPerForM), Disciplines of Chemical Pathology and Primary Care, Faculty of Medicine, Universiti Teknologi MARA, Sungai Buloh, Selangor, Malaysia
| | - Jeong Euy Park
- Division of Cardiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Xue Wu
- Department of Atherosclerosis, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China
| | - Anis S Ramli
- Institute for Pathology, Laboratory and Forensic Medicine (I-PPerForM), Disciplines of Chemical Pathology and Primary Care, Faculty of Medicine, Universiti Teknologi MARA, Sungai Buloh, Selangor, Malaysia
| | - Ngoc Thanh Kim
- Department of Cardiology, Hanoi Medical University, Hanoi, Vietnam
- Vietnam National Heart Institute, Bach Mai Hospital, Hanoi, Vietnam
| | - See Kwok
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
- Cardiovascular Trials Unit, The Old St Mary's Hospital, Central Manchester University Hospital NHS Foundation Trust, Manchester, UK
| | - Lourdes E Gonzalez-Santos
- Department of Cardiology, Section of Preventive Cardiology and Hypertension, UP-Philippine General Hospital, Manila, Philippines
| | - Ta-Chen Su
- Department of Internal Medicine and Cardiovascular Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Thanh Huong Truong
- Department of Cardiology, Hanoi Medical University, Hanoi, Vietnam
- Vietnam National Heart Institute, Bach Mai Hospital, Hanoi, Vietnam
| | - Handrean Soran
- Cardiovascular Trials Unit, The Old St Mary's Hospital, Central Manchester University Hospital NHS Foundation Trust, Manchester, UK
| | - Shizuya Yamashita
- Department of Cardiovascular Medicine and Community Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan
- Rinku General Medical Center, Osaka, Japan
| | - Brian Tomlinson
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Gerald F Watts
- School of Medicine, Faculty of Health and Medical Sciences, University of Western Australia, Perth, Australia
- Lipid Disorders Clinic, Department of Cardiology, Royal Perth Hospital, Perth, Western Australia, Australia
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Batais MA, Almigbal TH, Bin Abdulhak AA, Altaradi HB, AlHabib KF. Assessment of physicians' awareness and knowledge of familial hypercholesterolemia in Saudi Arabia: Is there a gap? PLoS One 2017; 12:e0183494. [PMID: 28817709 PMCID: PMC5560711 DOI: 10.1371/journal.pone.0183494] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 08/05/2017] [Indexed: 12/20/2022] Open
Abstract
Background The scarcity of familial hypercholesterolemia (FH) cases reported in Saudi Arabia might be indicative of a lack of awareness of this common genetic disease among physicians. Objective To assess physicians’ awareness, practice, and knowledge of FH in Saudi Arabia. Methods This is a cross-sectional study conducted among physicians at four tertiary hospitals in Riyadh, Saudi Arabia between March 2016 and May 2016 using a self-administered questionnaire. Results A total of 294 physicians completed the survey (response rate 90.1%). Overall, 92.9% of the participants have poor knowledge of FH while only 7.1% have acceptable knowledge. The majority (68.7%) of physicians rated their familiarity with FH as average or above average, and these had higher mean knowledge scores than participants with self-reported below average familiarity (mean 3.4 versus 2.6) (P < 0.001). Consultant physicians were 4.2 times more likely to be familiar with FH than residents or registrars (OR = 4.2, 95% CI = 1.9–9.1, P < 0.001). Physicians who currently managed FH patients had higher mean knowledge scores compared to those without FH patients in their care (3.5 versus 2.9) (P = 0.006). In addition, there were statistically significant differences between physicians’ mean knowledge scores and their ages, levels of training, and years in practice. Moreover, a substantial deficit was identified in the awareness of various clinical algorithms to diagnose patients with FH, cascade screening, specialist lipid services, and the existence of statin alternatives, such as proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitors. Conclusion A substantial deficit was found in the awareness, knowledge, practice, and detection of FH among physicians in Saudi Arabia. Extensive educational programs are required to raise physician awareness and implement best practices; only then can the impact of these interventions on FH management and patient outcome be assessed.
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Affiliation(s)
- Mohammed Ali Batais
- Department of Family and Community Medicine, King Saud University, Riyadh, Saudi Arabia
- * E-mail:
| | - Turky H. Almigbal
- Department of Family and Community Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Aref A. Bin Abdulhak
- Division of Cardiovascular Disease, Department of Internal Medicine, University of Iowa Hospitals and Clinics, Iowa City, Iowa, United States of America
| | - Hani B. Altaradi
- Department of Cardiac Sciences, King Fahad Cardiac Center, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Khalid F. AlHabib
- Department of Cardiac Sciences, King Fahad Cardiac Center, College of Medicine, King Saud University, Riyadh, Saudi Arabia
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Bell DA, Watts GF. Progress in the care of familial hypercholesterolaemia: 2016. Med J Aust 2017; 205:232-6. [PMID: 27581271 DOI: 10.5694/mja16.00070] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 04/28/2016] [Indexed: 01/01/2023]
Abstract
Familial hypercholesterolaemia (FH) is the most common autosomal dominant condition, with a prevalence of between one in 200 and one in 350 people in the general population. Untreated FH is associated with premature atherosclerotic cardiovascular disease (CVD). The prevalence of homozygous or compound heterozygous FH is now considered to be about one in 300 000 people. Treating children with FH reduces progression of atherosclerotic CVD and future CVD events. Most individuals with FH are undiagnosed, which together with the recent frequency data in the population and in individuals with premature coronary disease creates a public health challenge and mandates a key role for primary care. Childhood is the optimal period for detecting FH, since low-density lipoprotein cholesterol (LDL-c) concentrations better differentiate affected from unaffected individuals. In an Australian community setting, over 70% of adults with an LDL-c level ≥ 6.5 mmol/L have clinical FH; of these, 30% have a detectable mutation. The community laboratory has an important role in identifying FH, with interpretive comments leading to additional reductions in LDL-c concentrations, and a phone call from the pathologist to the general practitioner improving detection of cases. Cascade screening using DNA testing is cost-effective and acceptable to screenees. Next generation genetic sequencing may differentiate people with polygenic hypercholesterolaemia alone from those with FH. Smoking, hypertension, elevated lipoprotein(a) levels, chronic kidney disease and diabetes are additional atherosclerotic CVD risk factors in FH. Equations for assessing absolute risk of CVD in primary prevention underestimate risk in FH. The adult LDL-c goal is a greater than 50% reduction in LDL-c levels, followed by a target of < 2.5 mmol/L, or < 1.8 mmol/L for individuals with CVD or other CVD risk factors. Proprotein convertase subtilisin/kexin type 9 inhibitors significantly reduce LDL-c and lipoprotein(a) levels in people with FH. Registries are essential for improving the care of people with FH.
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Vickery AW, Ryan J, Pang J, Garton-Smith J, Watts GF. Increasing the Detection of Familial Hypercholesterolaemia Using General Practice Electronic Databases. Heart Lung Circ 2016; 26:450-454. [PMID: 27889294 DOI: 10.1016/j.hlc.2016.09.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 02/29/2016] [Accepted: 09/24/2016] [Indexed: 10/20/2022]
Abstract
BACKGROUND Familial hypercholesterolaemia (FH) is a common autosomal co-dominant condition that causes premature cardiovascular disease. Awareness of FH is poor and only 10-15% of the affected population is identified. Electronic health records provide an opportunity to increase detection and awareness in general practice OBJECTIVE: To determine whether a simple electronic extraction tool can increase detection of FH in general practice. METHOD An extraction tool applied to general practice electronic health records (EHR) to screen for FH, total cholesterol and low density lipoprotein cholesterol (LDL-c) levels in association with entered diagnostic criteria and demographic data in five general practices. RESULTS Of 157,290 active patients examined, 0.7% (n=1081) had an LDL-c>5.0 mmol/L representing 1 in 146 of active patients. An additional 0.8% (n=1276) patients were at possible risk of FH. Of those with an LDL-c>5.0 mmol/L 43.7% of patients had no record of being prescribed statins. Twenty patients (0.013%) had a clinical diagnosis of FH entered in the EHR. CONCLUSIONS Patients at high risk of FH can be identified by a simple electronic screening method in general practice. Clinical data entry is variable in general practice. Targeted screening enables clinical assessment of patients at risk of cardiovascular disease and using the DLCNS will enable primary care to increase identification of FH. Approximately one in five patients extracted using this method, are likely to have phenotypically probable FH, making it a useful screening tool.
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Affiliation(s)
- Alistair W Vickery
- School of Primary, Aboriginal and Rural Health Care, University of Western Australia, Perth, WA, Australia.
| | - Jackie Ryan
- Lipid Disorders Clinic, Cardiovascular Medicine, Royal Perth Hospital, School of Medicine and Pharmacology, University of Western Australia, Perth, WA, Australia
| | - Jing Pang
- Lipid Disorders Clinic, Cardiovascular Medicine, Royal Perth Hospital, School of Medicine and Pharmacology, University of Western Australia, Perth, WA, Australia
| | | | - Gerald F Watts
- Lipid Disorders Clinic, Cardiovascular Medicine, Royal Perth Hospital, School of Medicine and Pharmacology, University of Western Australia, Perth, WA, Australia
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Kwok S, Pang J, Adam S, Watts GF, Soran H. An online questionnaire survey of UK general practitioners' knowledge and management of familial hypercholesterolaemia. BMJ Open 2016; 6:e012691. [PMID: 28186938 PMCID: PMC5128898 DOI: 10.1136/bmjopen-2016-012691] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
OBJECTIVE Early diagnosis and treatment of heterozygous familial hypercholesterolaemia (HeFH) is known to be associated with reduced mortality from premature coronary artery disease, but HeFH remains underdiagnosed. This survey aims to determine knowledge and current management of HeFH in general practice. SETTING An online questionnaire was administered to general practitioners' (GPs') in the North West of England to assess their knowledge and management of HeFH. PARTICIPANTS Practising GPs in the North West of England were contacted by email and invited to complete an online questionnaire. Recruitment discontinued when the target of 100 was reached. PRIMARY OUTCOME An assessment of the knowledge and current management of HeFH in GPs. RESULTS 100 GP responses were analysed. Although only 39% considered themselves to have reasonable knowledge of HeFH, 89% knew that HeFH was a genetic disorder and 74% selected the correct lipid profile for diagnosing the condition. More than half (61%) were aware of current guidelines on HeFH. Gaps in knowledge were evident when only 30% correctly identified the prevalence of HeFH and half were not aware of the pattern of inheritance. Increased cardiovascular risk was underestimated by majority. 33% thought that they had HeFH patients in their practice confirming underdiagnosis of the condition. Statin therapy was recognised by 94% to be the right medication for treating HeFH. The majority (82%) regarded GPs to be the most effective healthcare professional for early recognition of HeFH. CONCLUSIONS GPs have an above-average knowledge of familial hypercholesterolaemia (FH) and almost universally consider that they have a key role in the early recognition of undiagnosed HeFH patients in the community. However, there are gaps in awareness that need to be addressed to further enhance the care of FH in the community.
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Affiliation(s)
- See Kwok
- Cardiovascular Trials Unit, The Old St Mary's Hospital, Manchester, UK
- University of Manchester, Institute of Human Development, Manchester, UK
| | - Jing Pang
- School of Medicine and Pharmacology, University of Western Australia, Perth, Western Australia, Australia
| | - Safwaan Adam
- Cardiovascular Trials Unit, The Old St Mary's Hospital, Manchester, UK
| | - Gerald F Watts
- School of Medicine and Pharmacology, University of Western Australia, Perth, Western Australia, Australia
- Lipid Disorders Clinic, Department of Cardiology, Royal Perth Hospital, Perth, Western Australia, Australia
| | - Handrean Soran
- Cardiovascular Trials Unit, The Old St Mary's Hospital, Manchester, UK
- Central Manchester University Hospitals NHS Foundation Trust, Manchester, UK
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Schofield J, Kwok S, France M, Capps N, Eatough R, Yadav R, Ray K, Soran H. Knowledge gaps in the management of familial hypercholesterolaemia. A UK based survey. Atherosclerosis 2016; 252:161-165. [PMID: 27451004 DOI: 10.1016/j.atherosclerosis.2016.07.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Revised: 06/26/2016] [Accepted: 07/07/2016] [Indexed: 10/21/2022]
Abstract
BACKGROUND AND AIMS Untreated individuals with familial hypercholesterolaemia (FH) are at increased risk of developing premature cardiovascular disease (CVD). Early diagnosis and treatment can result in a normal life expectancy. A recent survey commissioned by the European Atherosclerosis Society (EAS) reported a lack of awareness of FH in the general population. We conducted a survey to assess knowledge among healthcare professionals involved in the assessment and management of cardiovascular risk and disease in the United Kingdom. METHODS A survey designed to assess knowledge of diagnostic criteria, risk assessment, the role of cascade screening, and management options for patients with FH was distributed to 1000 healthcare professionals (response rate 44.3%). The same survey was redistributed following attendance at an educational session on FH. RESULTS 151 respondents (40.5%) reported having patients under their care who would meet the diagnostic criteria for FH, but just 61.4% recognized that cardiovascular risk estimation tools cannot be applied in FH, and only 22.3% understood the relative risk of premature CVD compared to the general population. Similarly, just 65.9% were aware of recommendations regarding cascade screening. CONCLUSIONS The prevalence and associated risk of FH continue to be underestimated, and knowledge of diagnostic criteria and treatment options is suboptimal. These results support the recent Consensus Statement of the EAS and production of quality standards by the National Institute for Health and Care Excellence. Further work is required to formulate interventions to improve FH awareness and knowledge, and to determine the effect these interventions have on patient outcomes.
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Affiliation(s)
- Jonathan Schofield
- Cardiovascular Trials Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester, UK; Cardiovascular Research Group, Core Technologies Facility, University of Manchester, Manchester, UK
| | - See Kwok
- Cardiovascular Trials Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester, UK; Barlow Medical Centre, Manchester, UK
| | - Michael France
- Cardiovascular Trials Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester, UK
| | - Nigel Capps
- Department of Clinical Biochemistry, Shrewsbury & Telford Hospital NHS Trust, Telford, UK
| | - Ruth Eatough
- Cardiovascular Trials Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester, UK
| | - Rahul Yadav
- Cardiovascular Research Group, Core Technologies Facility, University of Manchester, Manchester, UK
| | - Kausik Ray
- Cardiovascular Sciences Research Centre, St George's Hospital NHS Trust, London, UK
| | - Handrean Soran
- Cardiovascular Trials Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester, UK; Cardiovascular Research Group, Core Technologies Facility, University of Manchester, Manchester, UK.
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Bender R, Edwards G, McMahon J, Hooper AJ, Watts GF, Burnett JR, Bell DA. Interpretative comments specifically suggesting specialist referral increase the detection of familial hypercholesterolaemia. Pathology 2016; 48:463-6. [PMID: 27328651 DOI: 10.1016/j.pathol.2016.04.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 04/01/2016] [Accepted: 04/06/2016] [Indexed: 11/30/2022]
Abstract
Familial hypercholesterolaemia (FH) is an under-diagnosed inherited condition characterised by elevated low density lipoprotein (LDL)-cholesterol and premature coronary artery disease. The requesting general practitioner of individuals with extremely elevated LDL-cholesterol measured by St John of God Pathology receives an interpretative comment on the lipid results highlighting possible FH. We sought to determine whether specifically recommending referral to the regional Lipid Disorders Clinic (LDC) increased referral and FH detection rates. A prospective case-control study of individuals with LDL-cholesterol ≥6.5 mmol/L was conducted. All individuals received an interpretative comment highlighting the possibility of FH. The cases comment also suggested LDC referral, and a subset of cases received the LDC's fax number (fax-cases) in addition. There were 231 individuals with an LDL-cholesterol ≥6.5 mmol/L; 96 (42%) controls and 135 (58%) cases, of which 99 were fax-cases. Twenty-four (18%) cases were referred to clinic compared with eight (8%) controls (p = 0.035). After specialist review and genetic testing, four probable and four definite FH individuals were detected amongst controls, compared with seven possible, eight probable and nine definite FH amongst cases. Genetic testing was performed in 31 (94%) individuals, 13 (42%) had a causative mutation identified. Interpretative commenting specifically recommending specialist review augments the detection of FH in the community.
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Affiliation(s)
- Robert Bender
- Cardiometabolic Service, Royal Perth Hospital, Perth, WA, Australia
| | - Glenn Edwards
- Department of Clinical Biochemistry, St John of God Pathology, Osborne Park, Perth, WA, Australia
| | - Jenny McMahon
- Department of Clinical Biochemistry, St John of God Pathology, Osborne Park, Perth, WA, Australia
| | - Amanda J Hooper
- Department of Clinical Biochemistry, PathWest Laboratory Medicine WA, Royal Perth Hospital and Fiona Stanley Hospital Network, Perth, WA, Australia; School of Medicine and Pharmacology, University of Western Australia, Perth, WA, Australia; School of Pathology and Laboratory Medicine, University of Western Australia, Perth, WA, Australia
| | - Gerald F Watts
- Cardiometabolic Service, Royal Perth Hospital, Perth, WA, Australia; School of Medicine and Pharmacology, University of Western Australia, Perth, WA, Australia
| | - John R Burnett
- Cardiometabolic Service, Royal Perth Hospital, Perth, WA, Australia; Department of Clinical Biochemistry, PathWest Laboratory Medicine WA, Royal Perth Hospital and Fiona Stanley Hospital Network, Perth, WA, Australia; School of Medicine and Pharmacology, University of Western Australia, Perth, WA, Australia
| | - Damon A Bell
- Cardiometabolic Service, Royal Perth Hospital, Perth, WA, Australia; Department of Clinical Biochemistry, St John of God Pathology, Osborne Park, Perth, WA, Australia; Department of Clinical Biochemistry, PathWest Laboratory Medicine WA, Royal Perth Hospital and Fiona Stanley Hospital Network, Perth, WA, Australia; School of Medicine and Pharmacology, University of Western Australia, Perth, WA, Australia.
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Gidding SS, Champagne MA, de Ferranti SD, Defesche J, Ito MK, Knowles JW, McCrindle B, Raal F, Rader D, Santos RD, Lopes-Virella M, Watts GF, Wierzbicki AS. The Agenda for Familial Hypercholesterolemia: A Scientific Statement From the American Heart Association. Circulation 2015; 132:2167-92. [PMID: 26510694 DOI: 10.1161/cir.0000000000000297] [Citation(s) in RCA: 481] [Impact Index Per Article: 53.4] [Reference Citation Analysis] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Abstract
Phenylketonuria (PKU) is an autosomal recessive disorder of phenylalanine (Phe) catabolism resulting from a deficiency of L-phenylalanine hydroxylase (PAH). An association between hyperphenylalaninaemia (HPA) and hypocholesterolaemia has been reported in children. However, controversy exists as to whether this is due to the low protein diet or to a disruption to cholesterol biosynthesis inherent to those with PKU. We investigated the relationship between blood Phe and plasma cholesterol in 41 apparently healthy adults with PKU (26 female, 15 male, age 18-57 years, median age 26 years) attending a PKU outpatient clinic at an adult tertiary care hospital. Of these patients, 33 (80%) were compliant with a Phe-restricted diet with amino acid supplementation, whereas eight (20%) were not. The PKU subjects had a mean body mass index (BMI) of 30.3 ± 1.8 kg/m; 72% were obese, 14% overweight, with only 14% having normal BMI. The mean blood Phe was 1194 ± 522 μmol/L with plasma total cholesterol, triglyceride, HDL-cholesterol, LDL-cholesterol and apolipoprotein (apo) B concentrations of 4.3 ± 0.8 mmol/L, 1.6 ± 0.8 mmol/L, 1.2 ± 0.3 mmol/L, 2.3 ± 0.8 mmol/L, and 0.83 ± 0.21 g/L, respectively. The mean LDL-cholesterol was 19% lower in PKU females than that of 8944 age-matched females from a community population (2.5 ± 0.8 mmol/L vs. 3.1 ± 0.9 mmol/L, p < 0.001). Similarly, the mean LDL-cholesterol was 32% lower in PKU males than 3786 age-matched males (2.1 ± 0.7 mmol/L vs. 3.1 ± 1.0 mmol/L, p < 0.0001). No correlations were observed between Phe and total cholesterol, LDL-cholesterol or apoB in the PKU cohort. Adults with PKU had low-normal cholesterol concentrations, with no correlation observed between Phe and cholesterol levels. Our findings support the concept that the HPA found in PKU, rather than an effect of a low-protein diet, leads to hypocholesterolaemia. Studies are required to determine whether this cholesterol-lowering effect confers cardioprotection.
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Brett T, Watts GF, Arnold-Reed DE, Bell DA, Garton-Smith J, Vickery AW, Ryan JDM, Pang J. Challenges in the care of familial hypercholesterolemia: a community care perspective. Expert Rev Cardiovasc Ther 2015; 13:1091-100. [PMID: 26313701 DOI: 10.1586/14779072.2015.1082907] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Familial hyperchoelsterolaemia (FH) remains under-diagnosed and under-treated in the community setting. Earlier evidence suggested a prevalence of 1:500 worldwide but newer evidence suggests it is more common. Less than 15% of FH patients are ever diagnosed, with children and young adults rarely tested despite having the most to gain given their lifetime exposure. Increasing awareness among primary care teams is critical to improve the detection profile for FH. Cascade testing in the community setting needs a sustainable approach to be developed to facilitate family tracing of index cases. The use of the Dutch Lipid Clinic Network Criteria score to facilitate a phenotypic diagnosis is the preferred approach adopted in Australia and eliminates the need to undertake genetic testing for all suspected FH cases.
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Affiliation(s)
- Tom Brett
- a 1 General Practice and Primary Health Care Research, School of Medicine, The University of Notre Dame Australia, Fremantle, Western Australia, Australia
| | - Gerald F Watts
- b 2 School of Medicine and Pharmacology, University of Western Australia, Perth, Western Australia, Australia.,c 3 Lipid Disorders Clinic, Cardiometabolic Services, Royal Perth Hospital, Western Australia, Australia
| | - Diane E Arnold-Reed
- a 1 General Practice and Primary Health Care Research, School of Medicine, The University of Notre Dame Australia, Fremantle, Western Australia, Australia
| | | | - Jacquie Garton-Smith
- f 6 Cardiovascular Health Network, Department of Heath Western Australia, Perth, Western Australia, Australia.,g 7 Clinical Services, Royal Perth Hospital, Perth, Western Australia, Australia
| | - Alistair W Vickery
- h 8 School of Primary, Aboriginal and Rural Health Care, University of Western Australia, Crawley, Western Australia, Australia
| | - Jacqueline D M Ryan
- b 2 School of Medicine and Pharmacology, University of Western Australia, Perth, Western Australia, Australia
| | - Jing Pang
- b 2 School of Medicine and Pharmacology, University of Western Australia, Perth, Western Australia, Australia
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Bell DA, Watts GF. Screening for familial hypercholesterolemia: primary care applications. ACTA ACUST UNITED AC 2015. [DOI: 10.2217/clp.15.24] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bell DA, Edwards G, Hooper AJ, McMahon J, van Bockxmeer FM, Watts GF, Burnett JR. The potential role of an expert computer system to augment the opportunistic detection of individuals with familial hypercholesterolaemia from a community laboratory. Clin Chim Acta 2015; 448:18-21. [PMID: 26086446 DOI: 10.1016/j.cca.2015.06.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Revised: 06/04/2015] [Accepted: 06/09/2015] [Indexed: 12/12/2022]
Abstract
BACKGROUND Familial hypercholesterolaemia (FH) is the most common monogenic cause of premature atherosclerotic cardiovascular disease (CVD). However, most individuals with FH remain undiagnosed. We sought to determine if an expert system (ES) at a community laboratory could identify information relevant for estimating an individual's likelihood of FH using the Dutch Lipid Clinic Network criteria (DLCNC). METHODS An ES (RippleDown®) retrospectively analysed laboratory results and clinical details on the current and previous lipid requests from a community laboratory in Western Australia, over 12months. RESULTS 84,823 individuals had ≥1 LDL-cholesterol request with data available on 84,083 (99.1%). Clinical details were provided on 71,282 (84.8%) individuals' current or previous requests. History relevant to the DLCNC was present in 883 (1.1%) individuals, with premature CVD and non-cardiac vascular disease present in 177 and 64 individuals, respectively. Statin therapy was reported in 5118 individuals; 112 individuals with a current LDL-cholesterol of <6.5mmol/L had a previous LDL-cholesterol of ≥6.5mmol/L. CONCLUSIONS The ES was able to identify information that increased the likelihood of FH in 5471 cases. The ability to detect individuals with premature CVD and to classify them based on their highest LDL-cholesterol may augment FH detection, although further investigation is required to confirm this.
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Affiliation(s)
- Damon A Bell
- Department of Clinical Biochemistry, St John of God Pathology, Osborne Park, Australia; Department of Clinical Biochemistry, PathWest Laboratory Medicine WA, Royal Perth Hospital, Perth, Australia; School of Medicine & Pharmacology, University of Western Australia, Perth, Australia; Lipid Disorders Clinic, Cardiometabolic Service, Department of Cardiology, Royal Perth Hospital, Perth, Australia.
| | - Glenn Edwards
- Department of Clinical Biochemistry, St John of God Pathology, Osborne Park, Australia
| | - Amanda J Hooper
- Department of Clinical Biochemistry, PathWest Laboratory Medicine WA, Royal Perth Hospital, Perth, Australia; School of Medicine & Pharmacology, University of Western Australia, Perth, Australia; School of Pathology & Laboratory Medicine, University of Western Australia, Perth, Australia
| | - Jenny McMahon
- Department of Clinical Biochemistry, St John of God Pathology, Osborne Park, Australia
| | - Frank M van Bockxmeer
- Department of Clinical Biochemistry, PathWest Laboratory Medicine WA, Royal Perth Hospital, Perth, Australia; School of Surgery, University of Western Australia, Perth, Australia
| | - Gerald F Watts
- School of Medicine & Pharmacology, University of Western Australia, Perth, Australia; Lipid Disorders Clinic, Cardiometabolic Service, Department of Cardiology, Royal Perth Hospital, Perth, Australia
| | - John R Burnett
- Department of Clinical Biochemistry, PathWest Laboratory Medicine WA, Royal Perth Hospital, Perth, Australia; School of Medicine & Pharmacology, University of Western Australia, Perth, Australia; Lipid Disorders Clinic, Cardiometabolic Service, Department of Cardiology, Royal Perth Hospital, Perth, Australia
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Screening for Familial Hypercholesterolaemia: Universal or Cascade? A Critique of Current FH Recognition Strategies. CURRENT CARDIOVASCULAR RISK REPORTS 2015. [DOI: 10.1007/s12170-014-0434-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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A framework for bridging the gap in the care of familial hypercholesterolaemia in the community. INT J EVID-BASED HEA 2014; 12:244-54. [DOI: 10.1097/xeb.0000000000000019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kirke AB, Barbour RA, Burrows S, Bell DA, Vickery AW, Emery J, Watts GF. Systematic detection of familial hypercholesterolaemia in primary health care: a community based prospective study of three methods. Heart Lung Circ 2014; 24:250-6. [PMID: 25445428 DOI: 10.1016/j.hlc.2014.09.011] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2014] [Accepted: 09/17/2014] [Indexed: 11/28/2022]
Abstract
BACKGROUND Familial hypercholesterolaemia (FH), a co-dominantly inherited disease of cholesterol that markedly increases risk of premature coronary artery disease (CAD), is significantly under-diagnosed. Primary health care is increasingly seen as a setting in which to increase the detection rate of index cases. We report a prospective study of three methods of case detection using pre-existing primary health care services in one community. METHODS Three methods of case detection were tested: pathology laboratory database search, workplace health checks and general practice database search. People identified at risk by each of the three screening methods were offered detailed assessment for FH using the Dutch Lipid Clinic Network Criteria score (DLCNCS). RESULTS 1316 participants underwent detailed assessment for FH. The proportion of at risk people identified for further assessment was in decreasing order: GP (659 of 2494, 26.4%), workplace assessment (60 of 268, 22.4%) and pathology database (597 of 4517, 13.2%) p<0.001. Eight-six (6.5%) were identified as clinical FH (DLCNCS>5) of which 59 had genetic testing and 11 of 59, 18.6%, were confirmed to have a mutation causing FH. Pathology database detected the greatest number of clinical FH (51 of 86, 59.3%) and mutation positive participants (8 of 11, 72.7%). CONCLUSION Screening within primary health care was successful in detecting participants with FH. An integrated case detection model combining screening of pathology and GP databases is proposed.
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Affiliation(s)
- Andrew B Kirke
- School of Primary, Aboriginal and Rural Health Care, University of Western Australia, Perth, Australia.
| | - Rita A Barbour
- School of Primary, Aboriginal and Rural Health Care, University of Western Australia, Perth, Australia
| | - Sally Burrows
- School of Medicine & Pharmacology, University of Western Australia, Perth, Australia
| | - Damon A Bell
- School of Medicine & Pharmacology, University of Western Australia, Perth, Australia; Lipid Disorders Clinic, Cardiovascular Medicine, Royal Perth Hospital, Perth, Australia; Department of Clinical Biochemistry, PathWest Royal Perth Hospital, Perth, Australia
| | - Alistair W Vickery
- School of Primary, Aboriginal and Rural Health Care, University of Western Australia, Perth, Australia
| | - Jon Emery
- School of Primary, Aboriginal and Rural Health Care, University of Western Australia, Perth, Australia; General Practice and Primary Care Academic Centre, University of Melbourne, Melbourne, Australia
| | - Gerald F Watts
- School of Medicine & Pharmacology, University of Western Australia, Perth, Australia; Lipid Disorders Clinic, Cardiovascular Medicine, Royal Perth Hospital, Perth, Australia
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Vickery AW, Bell D, Garton-Smith J, Kirke AB, Pang J, Watts GF. Optimising the detection and management of familial hypercholesterolaemia: central role of primary care and its integration with specialist services. Heart Lung Circ 2014; 23:1158-64. [PMID: 25130889 DOI: 10.1016/j.hlc.2014.07.062] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 07/09/2014] [Accepted: 07/11/2014] [Indexed: 10/25/2022]
Abstract
Familial hypercholesterolaemia (FH) is the most common monogenic lipid disorder associated with premature coronary heart disease (CHD). However, the majority of people with FH are undiagnosed or undertreated. Early cholesterol lowering therapy reduces cardiovascular disease mortality in FH. Low awareness and knowledge of FH in specialty and general practice highlights the need for strategies to improve the detection and management of FH. We present an algorithm describing a multidisciplinary approach to FH detection and management. We highlight the role of primary care, and where GPs can work with preventive cardiologists to improve care of FH. Novel strategies to detect index cases with FH are presented including the community laboratory, highlighting patients at high risk of FH, and targeted FH detection through searching the general practice database. General practitioners request over 90% of LDL cholesterol measurements in the community. Once an individual with FH is detected only a small proportion of patients require specialty management with the majority of patients suitably managed in primary care. However, it is crucial to screen family members, as 50% of first-degree family members are expected to have FH due to the autosomal dominant inheritance.
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Affiliation(s)
- Alistair W Vickery
- School of Primary, Aboriginal and Rural Health Care, University of Western Australia, Crawley, Western Australia, Australia
| | - Damon Bell
- Clinical Biochemistry, PathWest Laboratory Medicine WA, Lipid Disorders Clinic, Royal Perth Hospital, University of Western Australia; Lipid Disorders Clinic, Cardiovascular Medicine, Royal Perth Hospital, School of Medicine and Pharmacology, University of Western Australia, Perth, WA, Australia
| | | | - Andrew B Kirke
- The Rural Clinical School of Western Australia (Bunbury) The University of Western Australia, Bunbury WA, Australia
| | - Jing Pang
- Lipid Disorders Clinic, Cardiovascular Medicine, Royal Perth Hospital, School of Medicine and Pharmacology, University of Western Australia, Perth, WA, Australia
| | - Gerald F Watts
- Lipid Disorders Clinic, Cardiovascular Medicine, Royal Perth Hospital, School of Medicine and Pharmacology, University of Western Australia, Perth, WA, Australia
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Page MM, Bell DA, Hooper AJ, Watts GF, Burnett JR. Lipoprotein apheresis and new therapies for severe familial hypercholesterolemia in adults and children. Best Pract Res Clin Endocrinol Metab 2014; 28:387-403. [PMID: 24840266 DOI: 10.1016/j.beem.2013.10.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Familial hypercholesterolemia (FH), the most common and severe monogenic form of hypercholesterolemia, is an autosomal co-dominant disease characterized by an increased plasma low density lipoprotein (LDL)-cholesterol concentration and premature coronary heart disease (CHD). The clinical phenotype depends on the gene involved and severity of mutation (or mutations) present. Patients with homozygous or compound heterozygous FH have severe hypercholesterolemia (LDL-cholesterol >13 mmol/L) due to a gene dosing effect and without treatment have accelerated atherosclerotic CHD from birth, and frequently die of CHD before age 30. Cholesterol-lowering therapies have been shown to reduce both mortality and major adverse cardiovascular events in individuals with FH. Lipoprotein apheresis concomitant with lipid-lowering therapy is the treatment of choice for homozygous FH. This article describes the rationale and role of lipoprotein apheresis in the treatment of severe FH and outlines the recent advances in new pharmacotherapies for this condition.
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Affiliation(s)
- Michael M Page
- Lipid Disorders Clinic, Department of Internal Medicine, Royal Perth Hospital, Perth, Western Australia, Australia
| | - Damon A Bell
- Lipid Disorders Clinic, Department of Internal Medicine, Royal Perth Hospital, Perth, Western Australia, Australia; Department of Clinical Biochemistry, PathWest Laboratory Medicine, Royal Perth Hospital, Perth, Western Australia, Australia; School of Medicine & Pharmacology, University of Western Australia, Perth, Western Australia, Australia
| | - Amanda J Hooper
- Department of Clinical Biochemistry, PathWest Laboratory Medicine, Royal Perth Hospital, Perth, Western Australia, Australia; School of Medicine & Pharmacology, University of Western Australia, Perth, Western Australia, Australia; School of Pathology & Laboratory Medicine, University of Western Australia, Perth, Western Australia, Australia
| | - Gerald F Watts
- Lipid Disorders Clinic, Department of Internal Medicine, Royal Perth Hospital, Perth, Western Australia, Australia; School of Medicine & Pharmacology, University of Western Australia, Perth, Western Australia, Australia
| | - John R Burnett
- Lipid Disorders Clinic, Department of Internal Medicine, Royal Perth Hospital, Perth, Western Australia, Australia; Department of Clinical Biochemistry, PathWest Laboratory Medicine, Royal Perth Hospital, Perth, Western Australia, Australia; School of Medicine & Pharmacology, University of Western Australia, Perth, Western Australia, Australia.
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Bell DA, Watts GF. Response to familial hypercholesterolemia: an under-recognized but significant concern in cardiology practice. Clin Cardiol 2014; 37:386-7. [PMID: 24931818 PMCID: PMC6649560 DOI: 10.1002/clc.22257] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Accepted: 11/28/2013] [Indexed: 02/02/2023] Open
Affiliation(s)
- Damon A Bell
- School of Medicine and Pharmacology, University of Western Australia, Perth, Australia; Department of Clinical Biochemistry, Lipid Disorders Clinic, Cardiometabolic Service, Perth, Australia; Department of Internal Medicine, Royal Perth Hospital, Perth, Australia
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Bell DA, Hooper AJ, Edwards G, Southwell L, Pang J, van Bockxmeer FM, Watts GF, Burnett JR. Detecting familial hypercholesterolaemia in the community: Impact of a telephone call from a chemical pathologist to the requesting general practitioner. Atherosclerosis 2014; 234:469-72. [DOI: 10.1016/j.atherosclerosis.2014.04.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 03/12/2014] [Accepted: 04/01/2014] [Indexed: 12/12/2022]
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Bell DA, Garton-Smith J, Vickery A, Kirke AB, Pang J, Bates TR, Watts GF. Familial Hypercholesterolaemia in Primary Care: Knowledge and Practices among General Practitioners in Western Australia. Heart Lung Circ 2014; 23:309-13. [DOI: 10.1016/j.hlc.2013.08.005] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 08/06/2013] [Accepted: 08/11/2013] [Indexed: 10/26/2022]
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Integrated guidance on the care of familial hypercholesterolemia from the International FH Foundation. J Clin Lipidol 2014; 8:148-72. [DOI: 10.1016/j.jacl.2014.01.002] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Accepted: 01/04/2014] [Indexed: 12/11/2022]
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Watts GF, Gidding S, Wierzbicki AS, Toth PP, Alonso R, Brown WV, Bruckert E, Defesche J, Lin KK, Livingston M, Mata P, Parhofer KG, Raal FJ, Santos RD, Sijbrands EJ, Simpson WG, Sullivan DR, Susekov AV, Tomlinson B, Wiegman A, Yamashita S, Kastelein JJ. Integrated guidance on the care of familial hypercholesterolaemia from the International FH Foundation. Int J Cardiol 2014; 171:309-25. [DOI: 10.1016/j.ijcard.2013.11.025] [Citation(s) in RCA: 221] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Accepted: 11/02/2013] [Indexed: 12/18/2022]
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Bell DA, Bender R, Hooper AJ, McMahon J, Edwards G, van Bockxmeer FM, Watts GF, Burnett JR. Impact of interpretative commenting on lipid profiles in people at high risk of familial hypercholesterolaemia. Clin Chim Acta 2013; 422:21-5. [DOI: 10.1016/j.cca.2013.03.027] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Revised: 03/22/2013] [Accepted: 03/27/2013] [Indexed: 10/27/2022]
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Bell DA, Hooper AJ, Watts GF, Burnett JR. Mipomersen and other therapies for the treatment of severe familial hypercholesterolemia. Vasc Health Risk Manag 2012; 8:651-9. [PMID: 23226021 PMCID: PMC3513909 DOI: 10.2147/vhrm.s28581] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Familial hypercholesterolemia (FH) is an autosomal dominant condition with a population prevalence of one in 300–500 (heterozygous) that is characterized by high levels of low-density lipoprotein (LDL) cholesterol, tendon xanthomata, and premature atherosclerosis and coronary heart disease (CHD). FH is caused mainly by mutations in the LDLR gene. However, mutations in other genes including APOB and PCSK9, can give rise to a similar phenotype. Homozygous FH with an estimated prevalence of one in a million is associated with severe hypercholesterolemia with accelerated atherosclerotic CHD in childhood and without treatment, death usually occurs before the age of 30 years. Current approaches for the treatment of homozygous FH include statin-based lipid-lowering therapies and LDL apheresis. Mipomersen is a second-generation antisense oligonucleotide (ASO) targeted to human apolipoprotein B (apoB)-100. This review provides an overview of the pathophysiology and current treatment options for familial hypercholesterolemia and describes novel therapeutic strategies focusing on mipomersen, an antisense apoB synthesis inhibitor. Mipomersen is distributed mainly to the liver where it silences apoB mRNA, thereby reducing hepatic apoB-100 and giving rise to reductions in plasma total cholesterol, LDL-cholesterol, and apoB concentrations in a dose-and time-dependent manner. Mipomersen has been shown to decrease apoB, LDL-cholesterol and lipoprotein(a) in patients with heterozygous and homozygous FH on maximally tolerated lipid-lowering therapy. The short-term efficacy and safety of mipomersen has been established, however, injection site reactions are common and concern exists regarding the long-term potential for hepatic steatosis with this ASO. In summary, mipomersen given alone or in combination with standard lipid-lowering medications shows promise as an adjunct therapy in patients with homozygous or refractory heterozygous FH at high risk of atherosclerotic CHD, who are not at target or are intolerant of statins.
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Affiliation(s)
- Damon A Bell
- Department of Core Clinical Pathology and Biochemistry, PathWest Laboratory Medicine, Royal Perth Hospital, Perth, Western Australia, Australia
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