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Paquette M, Baass A. Advances in familial hypercholesterolemia. Adv Clin Chem 2024; 119:167-201. [PMID: 38514210 DOI: 10.1016/bs.acc.2024.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
Familial hypercholesterolemia (FH), a semi-dominant genetic disease affecting more than 25 million people worldwide, is associated with severe hypercholesterolemia and premature atherosclerotic cardiovascular disease. Over the last decade, advances in data analysis, screening, diagnosis and cardiovascular risk stratification has significantly improved our ability to deliver precision medicine for these patients. Furthermore, recent updates on guideline recommendations and new therapeutic approaches have also proven to be highly beneficial. It is anticipated that both ongoing and upcoming clinical trials will offer further insights for the care and treatment of FH patients.
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Affiliation(s)
- Martine Paquette
- Genetic Dyslipidemias Clinic of the Montreal Clinical Research Institute, Montreal, QC, Canada
| | - Alexis Baass
- Genetic Dyslipidemias Clinic of the Montreal Clinical Research Institute, Montreal, QC, Canada; Department of Medicine, Divisions of Experimental Medicine and Medical Biochemistry, McGill University, Montreal, QC, Canada.
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LI JJ, ZHAO SP, ZHAO D, LU GP, PENG DQ, LIU J, CHEN ZY, GUO YL, WU NQ, YAN SK, WANG ZW, GAO RL. 2023 China Guidelines for Lipid Management. J Geriatr Cardiol 2023; 20:621-663. [PMID: 37840633 PMCID: PMC10568545 DOI: 10.26599/1671-5411.2023.09.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2023] Open
Abstract
Atherosclerotic cardiovascular disease (ASCVD) is the leading cause of death among urban and rural residents in China, and elevated low-density lipoprotein cholesterol (LDL-C) is a risk factor for ASCVD. Considering the increasing burden of ASCVD, lipid management is of the utmost importance. In recent years, research on blood lipids has made breakthroughs around the world, hence a revision of China guidelines for lipid management is imperative, especially since the target lipid levels in the general population vary in respect to the risk of ASCVD. The level of LDL-C, which can be regarded as appropriate in a population without frisk factors, can be considered abnormal in people at high risk of developing ASCVD. As a result, the "Guidelines for the prevention and treatment of dyslipidemia" were adapted into the "China Guidelines for Lipid Management" (henceforth referred to as the new guidelines) by an Experts' committee after careful deliberation. The new guidelines still recommend LDL-C as the primary target for lipid control, with CVD risk stratification to determine its target value. These guidelines recommend that moderate intensity statin therapy in adjunct with a heart-healthy lifestyle, be used as an initial line of treatment, followed by cholesterol absorption inhibitors or/and proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitors, as necessary. The new guidelines provide guidance for lipid management across various age groups, from children to the elderly. The aim of these guidelines is to comprehensively improve the management of lipids and promote the prevention and treatment of ASCVD by guiding clinical practice.
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Affiliation(s)
- Jian-Jun LI
- National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Shui-Ping ZHAO
- The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Dong ZHAO
- Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Guo-Ping LU
- Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Dao-Quan PENG
- The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Jing LIU
- Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Zhen-Yue CHEN
- Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yuan-Lin GUO
- National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Na-Qiong WU
- National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Sheng-Kai YAN
- Affiliated Hospital of Zunyi Medical University, School of Laboratory Medicine of Zunyi Medical University, Zunyi, Guizhou, China
| | - Zeng-Wu WANG
- National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Run-Lin GAO
- National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences, Beijing, China
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März W, Schmidt N, an Haack I, Dressel A, Grammer TB, Kleber ME, Baessler A, Beil FU, Gouni-Berthold I, Julius U, Kassner U, Katzmann JL, Klose G, König C, Koenig W, Koschker AC, Laufs U, Merkel M, Otte B, Parhofer KG, Hengstenberg W, Schunkert H, Stach-Jablonski K, Steinhagen-Thiessen E, Olivier CB, Hahmann H, Krzossok S, Vogt A, Müller-Wieland D, Schatz U. The German CaRe high registry for familial hypercholesterolemia - Sex differences, treatment strategies, and target value attainment. ATHEROSCLEROSIS PLUS 2023; 53:6-15. [PMID: 37434912 PMCID: PMC10331285 DOI: 10.1016/j.athplu.2023.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 05/01/2023] [Accepted: 06/01/2023] [Indexed: 07/13/2023]
Abstract
Background and aims Familial hypercholesterolemia (FH) is among the most common genetic disorders in primary care. However, only 15% or less of patients are diagnosed, and few achieve the goals for low-density lipoprotein cholesterol (LDL-C). In this analysis of the German Cascade Screening and Registry for High Cholesterol (CaRe High), we examined the status of lipid management, treatment strategies, and LDL-C goal attainment according to the ESC/EAS dyslipidemia guidelines. Methods We evaluated consolidated datasets from 1501 FH patients diagnosed clinically and seen either by lipid specialists or general practitioners and internists. We conducted a questionnaire survey of both the recruiting physicians and patients. Results Among the 1501 patients, 86% regularly received lipid-lowering drugs. LDL-C goals were achieved by 26% and 10% of patients with atherosclerotic cardiovascular disease (ASCVD) according to the 2016 and 2019 ESC/EAS dyslipidemia guidelines, respectively. High intensity lipid-lowering was administered more often in men than in women, in patients with ASCVD, at higher LDL-C and in patients with a genetic diagnosis of FH. Conclusions FH is under-treated in Germany compared to guideline recommendations. Male gender, genetic proof of FH, treatment by a specialist, and presence of ASCVD appear to be associated with increased treatment intensity. Achieving the LDL-C goals of the 2019 ESC/EAS dyslipidemia guidelines remains challenging if pre-treatment LDL-C is very high.
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Affiliation(s)
- Winfried März
- D•A•CH Gesellschaft Prävention von Herz-Kreislauf-Erkrankungen e.V., Hamburg, Germany
- V. Medizinische Klinik, Medizinische Fakultät Mannheim, Universität Heidelberg, Germany
- Klinisches Institut für Medizinische und Chemische Labordiagnostik, Medizinische Universität Graz, Graz, Austria
- Synlab Akademie, Synlab Holding Deutschland GmbH, Mannheim und Augsburg, Germany
| | - Nina Schmidt
- D•A•CH Gesellschaft Prävention von Herz-Kreislauf-Erkrankungen e.V., Hamburg, Germany
| | - Ira an Haack
- D•A•CH Gesellschaft Prävention von Herz-Kreislauf-Erkrankungen e.V., Hamburg, Germany
| | - Alexander Dressel
- D•A•CH Gesellschaft Prävention von Herz-Kreislauf-Erkrankungen e.V., Hamburg, Germany
| | - Tanja B. Grammer
- V. Medizinische Klinik, Medizinische Fakultät Mannheim, Universität Heidelberg, Germany
- Mannheim Institute of Public Health, Sozial- und Präventivmedizin, Medizinische Fakultät Mannheim, Universität Heidelberg, Germany
| | - Marcus E. Kleber
- V. Medizinische Klinik, Medizinische Fakultät Mannheim, Universität Heidelberg, Germany
- SYNLAB MVZ Humangenetik Mannheim, Mannheim, Germany
| | - Andrea Baessler
- Department of Internal Medicine II, University Hospital Regensburg, Germany
| | - F. Ulrich Beil
- Universitätsklinikum Hamburg Eppendorf, Ambulanzzentrum, Hamburg, Germany
| | - Ioanna Gouni-Berthold
- Polyclinic for Endocrinology, Diabetology and Preventive Medicine, University of Cologne, Cologne, Germany
| | - Ulrich Julius
- Medizinische Klinik und Poliklinik III, Universitätsklinikum Carl Gustav Carus an der Technischen Universität, Dresden, Germany
| | - Ursula Kassner
- Zentrum für Innere Medizin mit Gastroenterologie und Nephrologie, Lipidambulanz Charité Berlin, Germany
| | - Julius L. Katzmann
- Klinik und Poliklinik für Kardiologie, Universitätsklinikum Leipzig, Germany
| | - Gerald Klose
- Gemeinschaftspraxis für Innere Medizin, Gastroenterologie und Kardiologie Beckenbauer & Maierhof, Bremen, Germany
| | - Christel König
- Klinik für Innere Medizin, Lipidambulanz, Klinikum Links der Weser, Bremen, Germany
| | - Wolfgang Koenig
- Klinik für Herz- und Kreislauferkrankungen, Deutsches Herzzentrum München, Technical University Munich, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Munich Heart Alliance, Munich, Germany
| | - Ann-Cathrin Koschker
- Medizinische Klinik und Poliklinik I, Endokrinologie und Diabetologie, Universität Würzburg, Germany
| | - Ulrich Laufs
- Klinik und Poliklinik für Kardiologie, Universitätsklinikum Leipzig, Germany
- Klinik für Innere Medizin III (Kardiologie, Angiologie und Internistische Intensivmedizin), Universität des Saarlands, Homburg, Germany
| | | | - Britta Otte
- Medizinische Klinik D, Lipidambulanz, Universitätsklinikum Münster, Germany
| | - Klaus G. Parhofer
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Germany
| | - Wibke Hengstenberg
- Klinik für Herz- und Kreislauferkrankungen, Deutsches Herzzentrum München, Technical University Munich, Munich, Germany
| | - Heribert Schunkert
- Klinik für Herz- und Kreislauferkrankungen, Deutsches Herzzentrum München, Technical University Munich, Munich, Germany
| | | | | | - Christoph B. Olivier
- Department of Cardiology and Angiology I, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | | | - Stefan Krzossok
- Zentrum für Nieren- und Hochdruckerkrankungen, Wuppertal, Germany
| | - Anja Vogt
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Germany
| | - Dirk Müller-Wieland
- Medizinische Klinik I - RWTH Aachen m.S, kardiometabolische Prävention, Germany
| | - Ulrike Schatz
- Medizinische Klinik und Poliklinik III, Universitätsklinikum Carl Gustav Carus an der Technischen Universität, Dresden, Germany
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Li JJ, Zhao SP, Zhao D, Lu GP, Peng DQ, Liu J, Chen ZY, Guo YL, Wu NQ, Yan SK, Wang ZW, Gao RL. 2023 Chinese guideline for lipid management. Front Pharmacol 2023; 14:1190934. [PMID: 37711173 PMCID: PMC10498001 DOI: 10.3389/fphar.2023.1190934] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 06/26/2023] [Indexed: 09/16/2023] Open
Abstract
Atherosclerotic cardiovascular disease (ASCVD) is the leading cause of death among urban and rural residents in China, and elevated low-density lipoprotein cholesterol (LDL-C) is a risk factor for ASCVD. Considering the increasing burden of ASCVD, lipid management is of the utmost importance. In recent years, research on blood lipids has made breakthroughs around the world, hence a revision of Chinese guideline for lipid management is imperative, especially since the target lipid levels in the general population vary in respect to the risk of ASCVD. The level of LDL-C, which can be regarded as appropriate in a population without frisk factors, can be considered abnormal in people at high risk of developing ASCVD. As a result, the "Guidelines for the prevention and treatment of dyslipidemia" were adapted into the "Chinese guideline for Lipid Management" (henceforth referred to as the new guidelines) by an Experts' committee after careful deliberation. The new guidelines still recommend LDL-C as the primary target for lipid control, with cardiovascular disease (CVD) risk stratification to determine its target value. These guidelines recommend that moderate intensity statin therapy in adjunct with a heart-healthy lifestyle, be used as an initial line of treatment, followed by cholesterol absorption inhibitors or/and proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitors, as necessary. The new guidelines provide guidance for lipid management across various age groups, from children to the elderly. The aim of these guidelines is to comprehensively improve the management of lipids and promote the prevention and treatment of ASCVD by guiding clinical practice.
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Affiliation(s)
- Jian-Jun Li
- National Center for Cardiovascular Diseases, FuWai Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Shui-Ping Zhao
- The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Dong Zhao
- Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Guo-Ping Lu
- Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Dao-Quan Peng
- The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Jing Liu
- Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Zhen-Yue Chen
- Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yuan-Lin Guo
- National Center for Cardiovascular Diseases, FuWai Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Na-Qiong Wu
- National Center for Cardiovascular Diseases, FuWai Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Sheng-Kai Yan
- Affiliated Hospital of Zunyi Medical University, School of Laboratory Medicine of Zunyi Medical University, Zunyi, Guizhou, China
| | - Zeng-Wu Wang
- National Center for Cardiovascular Diseases, FuWai Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Run-Lin Gao
- National Center for Cardiovascular Diseases, FuWai Hospital, Chinese Academy of Medical Sciences, Beijing, China
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Guerin A, Iatan I, Ruel I, Ngufor LF, Genest J. Genetic testing for familial hypercholesterolemia in Quebec, Canada: a single-centre retrospective cohort study. CMAJ Open 2023; 11:E754-E764. [PMID: 37607748 PMCID: PMC10449021 DOI: 10.9778/cmajo.20220108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/24/2023] Open
Abstract
BACKGROUND Familial hypercholesterolemia (FH) is associated with premature atherosclerotic cardiovascular disease caused by elevated low-density lipoprotein cholesterol (LDL-C) levels. We determined the impact of a full next-generation sequencing (NGS) genetic panel on reclassification of patients with a clinical diagnosis of FH in Quebec compared to the partial genetic panel currently offered by the Quebec Ministère de la Santé et des Services sociaux (Ministry of Health and Social Services) (MSSS), which includes 11 variants that are common in French Canadians. METHODS We conducted a retrospective cohort study in a subgroup of patients in the Canadian FH Registry seen at the McGill University Health Centre Preventive Cardiology/Lipid Clinic, Montréal, between September 2017 and September 2021 who were clinically diagnosed with severe hypercholesterolemia, probable FH or definite FH according to the Canadian definition of FH. Next-generation sequencing of the LDLR, APOB and PCSK9 genes, and multiplex ligation-dependent probe amplification of the LDLR gene to detect genetic variants, were performed. RESULTS Among 335 consecutive patients with heterozygous FH (184 men [54.9%] and 151 women [45.1%]), the baseline LDL-C level was 6.96 (standard deviation 1.79) mmol/L. Patients identified through cascade screening were 11 years younger on average than index patients, and smaller proportions presented to the clinic with cardiovascular risk factors. A pathogenic FH variant was identified in 169 (73.8%) of the 229 patients who underwent genetic testing; the majority had variants in the LDLR (146 [86.4%]) or APOB (24 [14.2%]) gene. The genetic panel offered by the MSSS accounted for only 48% of the variants identified with the full NGS panel. Of the 229 patients, 90 (39.3%, 95% confidence interval 32.9%-46.0%) were reclassified from a clinical diagnosis of probable FH to definite FH after genetic screening with a full FH panel. INTERPRETATION Genetic testing in patients suspected of having FH provided diagnostic certainty and permitted many patients with a clinical diagnosis of probable FH to be reclassified as having definite FH. Genetic screening allows for increased identification of patients with FH and may therefore help reduce the burden of cardiovascular disease and mortality rates among Canadians with FH. Trial registration: ClinicalTrials.gov, no. NCT02009345.
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Affiliation(s)
- Amanda Guerin
- Research Institute of the McGill University Health Centre (Guerin, Ruel, Fri Ngufor, Genest), Montréal, Que.; Centre for Heart Lung Innovation (Iatan), Healthy Heart Program Prevention Clinic, St. Paul's Hospital, Department of Medicine, University of British Columbia, Vancouver, BC
| | - Iulia Iatan
- Research Institute of the McGill University Health Centre (Guerin, Ruel, Fri Ngufor, Genest), Montréal, Que.; Centre for Heart Lung Innovation (Iatan), Healthy Heart Program Prevention Clinic, St. Paul's Hospital, Department of Medicine, University of British Columbia, Vancouver, BC
| | - Isabelle Ruel
- Research Institute of the McGill University Health Centre (Guerin, Ruel, Fri Ngufor, Genest), Montréal, Que.; Centre for Heart Lung Innovation (Iatan), Healthy Heart Program Prevention Clinic, St. Paul's Hospital, Department of Medicine, University of British Columbia, Vancouver, BC
| | - Linda Fri Ngufor
- Research Institute of the McGill University Health Centre (Guerin, Ruel, Fri Ngufor, Genest), Montréal, Que.; Centre for Heart Lung Innovation (Iatan), Healthy Heart Program Prevention Clinic, St. Paul's Hospital, Department of Medicine, University of British Columbia, Vancouver, BC
| | - Jacques Genest
- Research Institute of the McGill University Health Centre (Guerin, Ruel, Fri Ngufor, Genest), Montréal, Que.; Centre for Heart Lung Innovation (Iatan), Healthy Heart Program Prevention Clinic, St. Paul's Hospital, Department of Medicine, University of British Columbia, Vancouver, BC
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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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Paquette M, Carrié A, Bernard S, Cariou B, Hegele RA, Genest J, Trinder M, Brunham LR, Béliard S, Baass A. Effect of the LDL receptor mutation type on incident major adverse cardiovascular events in familial hypercholesterolaemia. Eur J Prev Cardiol 2022; 29:2125-2131. [PMID: 36047048 DOI: 10.1093/eurjpc/zwac188] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 07/04/2022] [Accepted: 08/24/2022] [Indexed: 01/11/2023]
Abstract
AIMS Patients with familial hypercholesterolaemia (FH) are at increased risk of cardiovascular disease (CVD) due to extremely high circulating LDL cholesterol (LDL-C) concentrations. Our objective was to study the effect of the type of LDL receptor (LDLR) mutation on the incidence of major adverse cardiovascular events (MACEs). METHODS AND RESULTS This was a multinational prospective cohort study, which included patients with heterozygous FH aged 18-65 years, without a prior history of CVD, and carrying a pathogenic or likely pathogenic variant in the LDLR gene. A total of 2131 patients (20 535person-years of follow-up) were included in the study, including 1234 subjects carrying a defective mutation in the LDLR and 897 subjects carrying a null mutation. During the follow-up, a first MACE occurred in 79 cases (6%) in the defective group and in 111 cases (12%) in the null group. The mean baseline LDL-C concentration was 17% higher in the null group than in the defective group (7.90 vs. 6.73 mmoL/L, P < 0.0001). In a Cox regression model corrected for traditional cardiovascular risk factors, the presence of a null mutation was associated with a hazard ratio of 2.09 (1.44-3.05), P = 0.0001. CONCLUSION Carriers of a null mutation have an independent ∼2-fold increased risk of incident MACE compared with patients carrying a defective mutation. This study highlights the importance of genetic screening in FH in order to improve patient care.
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Affiliation(s)
- Martine Paquette
- Lipids, Nutrition, and Cardiovascular Prevention Clinic of the Montreal Clinical Research Institute, 110 avenue des Pins Ouest, Montreal, QC H2W 1R7, Canada
| | - Alain Carrié
- Department of Biochemistry, Obesity and Dyslipidemia Genetics Unit, Hôpital de La Pitié-Salpêtrière, Sorbonne University, Inserm, Institute of Cardiometabolism and Nutrition (ICAN), UMR_S1166, APHP, ICAN, 47-83 boulevard de l'hôpital, 75013 Paris, France
| | - Sophie Bernard
- Lipids, Nutrition, and Cardiovascular Prevention Clinic of the Montreal Clinical Research Institute, 110 avenue des Pins Ouest, Montreal, QC H2W 1R7, Canada
- Department of Medicine, Division of Endocrinology, Université de Montreal, Pavillon Roger-Gaudry, 2900 Edouard Montpetit Blvd, Montreal, QC H3T 1J4, Canada
| | - Bertrand Cariou
- Nantes Université, CHU Nantes, CNRS, Inserm, l'institut du thorax, 8 Quai Moncousu, F-44000 Nantes, France
| | - Robert A Hegele
- Department of Medicine, Schulich School of Medicine and Dentistry, Western University, 1151 Richmond St, London, ON N6A 5C1, Canada
- Robarts Research Institute, Western University, 100 Perth Dr, London, ON N6A 5K8, Canada
| | - Jacques Genest
- Research Institute of the McGill University Health Centre, 1001 Decarie Blvd, Montreal, QC H4A 3J1, Canada
| | - Mark Trinder
- Department of Medicine, Faculty of Medicine, University of British Columbia, Centre for Heart and Lung Innovation, University of British Columbia, 1081 Burrard St Room 166, Vancouver, BC V6Z 1Y6, Canada
| | - Liam R Brunham
- Department of Medicine, Faculty of Medicine, University of British Columbia, Centre for Heart and Lung Innovation, University of British Columbia, 1081 Burrard St Room 166, Vancouver, BC V6Z 1Y6, Canada
| | - Sophie Béliard
- Department of Nutrition, Metabolic Diseases, Endocrinology, Aix Marseille University, INSERM, INRAE, C2VN, La Conception Hospital, 27 Bd Jean Moulin, 13005 Marseille, France
| | - Alexis Baass
- Lipids, Nutrition, and Cardiovascular Prevention Clinic of the Montreal Clinical Research Institute, 110 avenue des Pins Ouest, Montreal, QC H2W 1R7, Canada
- Department of Medicine, Divisions of Experimental Medicine and Medical Biochemistry, McGill University, 3605 Rue de la Montagne, Montreal, QC H3G 2M1, Canada
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Rodrigues KF, Yong WTL, Bhuiyan MSA, Siddiquee S, Shah MD, Venmathi Maran BA. Current Understanding on the Genetic Basis of Key Metabolic Disorders: A Review. BIOLOGY 2022; 11:biology11091308. [PMID: 36138787 PMCID: PMC9495729 DOI: 10.3390/biology11091308] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/27/2022] [Accepted: 08/29/2022] [Indexed: 12/02/2022]
Abstract
Simple Summary Metabolic disorders (MD) are a challenge to healthcare systems; the emergence of the modern socio-economic system has led to a profound change in lifestyles in terms of dietary habits, exercise regimens, and behavior, all of which complement the genetic factors associated with MD. Diabetes Mellitus and Familial hypercholesterolemia are two of the 14 most widely researched MD, as they pose the greatest challenge to the public healthcare system and have an impact on productivity and the economy. Research findings have led to the development of new therapeutic molecules for the mitigation of MD as well as the invention of experimental strategies, which target the genes themselves via gene editing and RNA interference. Although these approaches may herald the emergence of a new toolbox to treat MD, the current therapeutic approaches still heavily depend on substrate reduction, dietary restrictions based on genetic factors, exercise, and the maintenance of good mental health. The development of orphan drugs for the less common MD such as Krabbe, Farber, Fabry, and Gaucher diseases, remains in its infancy, owing to the lack of investment in research and development, and this has driven the development of personalized therapeutics based on gene silencing and related technologies. Abstract Advances in data acquisition via high resolution genomic, transcriptomic, proteomic and metabolomic platforms have driven the discovery of the underlying factors associated with metabolic disorders (MD) and led to interventions that target the underlying genetic causes as well as lifestyle changes and dietary regulation. The review focuses on fourteen of the most widely studied inherited MD, which are familial hypercholesterolemia, Gaucher disease, Hunter syndrome, Krabbe disease, Maple syrup urine disease, Metachromatic leukodystrophy, Mitochondrial encephalopathy lactic acidosis stroke-like episodes (MELAS), Niemann-Pick disease, Phenylketonuria (PKU), Porphyria, Tay-Sachs disease, Wilson’s disease, Familial hypertriglyceridemia (F-HTG) and Galactosemia based on genome wide association studies, epigenetic factors, transcript regulation, post-translational genetic modifications and biomarker discovery through metabolomic studies. We will delve into the current approaches being undertaken to analyze metadata using bioinformatic approaches and the emerging interventions using genome editing platforms as applied to animal models.
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Affiliation(s)
- Kenneth Francis Rodrigues
- Biotechnology Research Institute, Universiti Malaysia Sabah, Kota Kinabalu 88400, Malaysia
- Correspondence: (K.F.R.); (B.A.V.M.); Tel.: +60-16-2096905 (B.A.V.M.)
| | - Wilson Thau Lym Yong
- Biotechnology Research Institute, Universiti Malaysia Sabah, Kota Kinabalu 88400, Malaysia
| | | | | | - Muhammad Dawood Shah
- Borneo Marine Research Institute, Universiti Malaysia Sabah, Kota Kinabalu 88400, Malaysia
| | - Balu Alagar Venmathi Maran
- Borneo Marine Research Institute, Universiti Malaysia Sabah, Kota Kinabalu 88400, Malaysia
- Correspondence: (K.F.R.); (B.A.V.M.); Tel.: +60-16-2096905 (B.A.V.M.)
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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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10
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Kramer AI, Akioyamen LE, Lee S, Bélanger A, Ruel I, Hales L, Genest J, Brunham LR. Major adverse cardiovascular events in homozygous familial hypercholesterolaemia: a systematic review and meta-analysis. Eur J Prev Cardiol 2021; 29:817-828. [PMID: 34957506 DOI: 10.1093/eurjpc/zwab224] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 11/30/2021] [Accepted: 12/14/2021] [Indexed: 11/14/2022]
Abstract
AIMS Homozygous familial hypercholesterolaemia (HoFH) is a genetic condition characterized by extremely elevated levels of low-density lipoprotein cholesterol and premature atherosclerotic cardiovascular disease and death. Due to its rarity, accurate assessment of cardiovascular outcomes associated with HoFH and how they have changed over time has been challenging. The goal of this study was to assess the prevalence and age-of-onset of major adverse cardiovascular events (MACE) among patients with HoFH. METHODS AND RESULTS We searched MEDLINE, EMBASE, Pubmed, Cochrane Central Register of Controlled Trials, Scopus, Africa-Wide, Google Scholar, Open Grey, and various clinical trial registries from inception to February 2020 to identify studies reporting on MACE in HoFH patients. We determined the pooled prevalence and mean age-of-onset of MACE outcomes individually using a random effects inverse variance model. We identified 94 studies that met our eligibility criteria. Myocardial infarction and coronary revascularization were common with a prevalence of 15.1% [95% confidence interval (95% CI) 10.7-20.0] and 28.3% (95% CI 22.5-34.3), respectively. The mean age-of-onset was 24.5 (95% CI 19.2-29.8) years for myocardial infarction and 32.2 (95% CI 26.6-37.8) years for revascularization. Sub-group analyses based on the year of publication revealed significant delays in the onset of MACE outcomes post-1990 compared to pre-1990. Egger's regression suggested possible bias, likely due to small study effects. CONCLUSIONS Atherosclerotic cardiovascular disease is common among HoFH patients and occurs at a young age. Age-of-onset of myocardial infarction was delayed by more than a decade from pre-1990 to post-1990, likely attributable to widespread use of statins and other therapies, reflecting substantial progress in the management of this rare but severe disorder.
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Affiliation(s)
- Adam I Kramer
- Department of Medicine, University of British Columbia, Vancouver V5Z 1M9, Canada
| | - Leo E Akioyamen
- Department of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Seohyuk Lee
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Alexandre Bélanger
- Research Institute of the McGill University Health Centre, Montreal, QC H4A 3J1, Canada
| | - Isabelle Ruel
- Research Institute of the McGill University Health Centre, Montreal, QC H4A 3J1, Canada
| | - Lindsay Hales
- McGill University Health Center Medical Libraries, Montreal, QC H3G 1A4, Canada
| | - Jacques Genest
- Research Institute of the McGill University Health Centre, Montreal, QC H4A 3J1, Canada
| | - Liam R Brunham
- Department of Medicine, University of British Columbia, Vancouver V5Z 1M9, Canada.,Centre for Heart Lung Innovation, University of British Columbia, 1081 Burrard Street - Room 166, Vancouver V6Z 1Y6, Canada
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11
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Shemesh E, Azaiza A, Zafrir B. Treatment gaps and mortality among patients with familial hypercholesterolemia and cardiovascular disease: a 4-year follow-up study. Eur J Prev Cardiol 2021; 28:e21-e22. [PMID: 32539452 DOI: 10.1177/2047487320932329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/03/2023]
Affiliation(s)
- Elad Shemesh
- Department of Cardiology, Lady Davis Carmel Medical Center, Israel
| | - Ameer Azaiza
- Faculty of Medicine, Technion, Israel Institute of Medicine, Israel
| | - Barak Zafrir
- Department of Cardiology, Lady Davis Carmel Medical Center, Israel
- Faculty of Medicine, Technion, Israel Institute of Medicine, Israel
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12
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Yuan Y, Zhao X, Teng X, Zhang Y. Identifying familial hypercholesterolemia in an early onset ischemic cerebrovascular disease patient and the cascade screening in the pedigree: a case report. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:180. [PMID: 33569482 PMCID: PMC7867922 DOI: 10.21037/atm-20-5600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Familial hypercholesterolemia (FH) is one of the most common inherited metabolic disorders characterized by elevated low-density lipid cholesterol (LDL-C) levels that lead to coronary artery disease at an early age and a low occurrence of cerebrovascular disease. Low-density lipoprotein receptor (LDLR) gene mutation is the most common cause of FH. Here, we report a case of a 47-year-old woman who had multiple carotid artery stenosis and brain ischemic foci, an elevated level of LDL-C, underwent eyelid xanthoma excision, and a family history of hyperlipidemia. Thereafter, she was diagnosed with FH according to the Dutch Lipid Clinical Network criteria and whole genome sequencing revealed compound heterozygous LDLR mutations. However, she denied a history of coronary heart disease (CAD). The patient underwent stenting of the right subclavicular artery and right internal carotid artery in our hospital. Lipid-lowering drugs were also administered to prevent stroke recurrence. During a 3-year follow-up, the blood lipid level of the patient reduced, and the condition of intracranial and extracranial vascular stenosis improved. Furthermore, a cascade screening was performed in her pedigree, and 7/9 family members were found to have elevated LDL-C, 6/7 were found to carry one of the two LDLR variants detected in the proband, and in 4/6, the carotid intima-media thickness was ≥1 mm, which was predicted as a high risk factor of cerebrovascular disease. Her relatives with high risks of cardiovascular or cerebrovascular diseases have been under lipid monitoring and management of risk factors since then. To date, no cardiovascular or cerebrovascular event has been reported. In conclusion, this case reminds us to consider FH screening in early-onset stroke or transient ischemic attack patients with elevated LDL-C level. Our report also demonstrates the beneficial role of genetic testing and cascade screening in the relatives of FH patients.
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Affiliation(s)
- Yuan Yuan
- Department of Neurophysiology and Neuropharmacology, Institute of Special Environmental Medicine and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Xiaoyan Zhao
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, China
| | - Xiangyun Teng
- Department of Neurophysiology and Neuropharmacology, Institute of Special Environmental Medicine and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Yunfeng Zhang
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, China
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13
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Trinder M, Brunham LR. Genetic Confirmation of Monogenic Familial Hypercholesterolemia Advises a More Intensive Lipid-Lowering Approach-Reply. JAMA Cardiol 2020; 5:1453. [PMID: 32936211 DOI: 10.1001/jamacardio.2020.4120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Mark Trinder
- Centre for Heart Lung Innovation, University of British Columbia, Vancouver, British Columbia, Canada
| | - Liam R Brunham
- Centre for Heart Lung Innovation, University of British Columbia, Vancouver, British Columbia, Canada
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14
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van Dijk WB, Schuit E. Replacing physical with virtual genetic tests: The importance of conscious methodological decisions. Eur J Prev Cardiol 2020; 27:1637-1638. [PMID: 32153211 PMCID: PMC7549278 DOI: 10.1177/2047487320904525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Wouter B van Dijk
- Julius Center for Health Sciences and Primary Care,
University Medical Center Utrecht, Utrecht University, , the Netherlands
| | - Ewoud Schuit
- Julius Center for Health Sciences and Primary Care,
University Medical Center Utrecht, Utrecht University, , the Netherlands
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15
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Abstract
PURPOSE OF REVIEW With the exception of familial hypercholesterolaemia, the value of genetic testing for managing dyslipidaemias is not established. We review the genetics of major dyslipidaemias in context of clinical practice. RECENT FINDINGS Genetic testing for familial hypercholesterolaemia is valuable to enhance diagnostic precision, cascade testing, risk prediction and the use of new medications. Hypertriglyceridaemia may be caused by rare recessive monogenic, or by polygenic, gene variants; genetic testing may be useful in the former, for which antisense therapy targeting apoC-III has been approved. Familial high-density lipoprotein deficiency is caused by specific genetic mutations, but there is no effective therapy. Familial combined hyperlipidaemia (FCHL) is caused by polygenic variants for which there is no specific gene testing panel. Familial dysbetalipoproteinaemia is less frequent and commonly caused by APOE ε2ε2 homozygosity; as with FCHL, it is responsive to lifestyle modifications and statins or/and fibrates. Elevated lipoprotein(a) is a quantitative genetic trait whose value in risk prediction over-rides genetic testing; treatment relies on RNA therapeutics. SUMMARY Genetic testing is not at present commonly available for managing dyslipidaemias. Rapidly advancing technology may presage wider use, but its worth will require demonstration of cost-effectiveness and a healthcare workforce trained in genomic medicine.
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16
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Schmidt EB, Hedegaard BS, Retterstøl K. Familial hypercholesterolaemia: history, diagnosis, screening, management and challenges. Heart 2020; 106:1940-1946. [DOI: 10.1136/heartjnl-2019-316276] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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17
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Lazarte J, Hegele RA. DNA sequencing in familial hypercholesterolaemia: the next generation. Eur J Prev Cardiol 2020; 28:873-874. [PMID: 33623969 DOI: 10.1093/eurjpc/zwaa044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Julieta Lazarte
- Departments of Medicine and Biochemistry, Robarts Research Institute, Schulich School of Medicine and Dentistry, Western University, 4288A-1151 Richmond Street North, London, ON N6A 5B7, Canada
| | - Robert A Hegele
- Departments of Medicine and Biochemistry, Robarts Research Institute, Schulich School of Medicine and Dentistry, Western University, 4288A-1151 Richmond Street North, London, ON N6A 5B7, Canada
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18
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Huang CC, Charng MJ. Genetic Diagnosis of Familial Hypercholesterolemia in Asia. Front Genet 2020; 11:833. [PMID: 32793292 PMCID: PMC7393677 DOI: 10.3389/fgene.2020.00833] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 07/09/2020] [Indexed: 12/31/2022] Open
Abstract
Familial hypercholesterolemia (FH) is a common genetic disease with an incidence of about 1 in 200-500 individuals. Genetic mutations markedly elevate low-density lipoprotein cholesterol and atherosclerotic cardiovascular disease (ASCVD) in FH patients. With advances in clinical diagnosis and genetic testing, more genetic mutations have been detected, including those in low-density lipoprotein receptor (LDLR), apolipoprotein B (APOB), proprotein convertase subtilisin/kexin type 9 (PCSK9), and so on. Globally, most FH patients remain undiagnosed, untreated, or inappropriately treated. Recently, there was a Global Call to Action by the Global Familial Hypercholesterolemia Community to reduce the health burden of FH. Asia, despite being the most populous continent with half of the global population, has low FH detection rates compared to Western countries. Therefore, we aimed to review the current status of FH genetic diagnosis in Asia to understand the gaps in FH diagnosis and management in this region.
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Affiliation(s)
- Chin-Chou Huang
- Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Cardiovascular Research Center, National Yang-Ming University, Taipei, Taiwan.,Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan
| | - Min-Ji Charng
- Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
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19
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Rallidis LS, Kosmas N. Familial hypercholesterolaemia: New directions on the diagnosis and treatment of an old disease. Hellenic J Cardiol 2020; 61:404-406. [PMID: 32681886 DOI: 10.1016/j.hjc.2020.06.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/21/2020] [Accepted: 06/26/2020] [Indexed: 12/20/2022] Open
Affiliation(s)
- Loukianos S Rallidis
- Second Department of Cardiology, University General Hospital, "Attikon", Athens, National and Kapodistrian University of Athens, Greece.
| | - Nikolaos Kosmas
- Second Department of Cardiology, University General Hospital, "Attikon", Athens, National and Kapodistrian University of Athens, Greece
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20
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"Apple does not fall far from the tree" - subclinical atherosclerosis in children with familial hypercholesterolemia. Lipids Health Dis 2020; 19:169. [PMID: 32664969 PMCID: PMC7362468 DOI: 10.1186/s12944-020-01335-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 06/23/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Familial hypercholesterolemia (FH) increases the risk of atherosclerosis in children and adults. Atherosclerotic cardiovascular disease in young patients FH is usually subclinical but recognition of children with more pronounced changes is crucial for adjusting effective management. Aim of this research was to use ultrasonography with two-dimensional speckle tracking (2DST) and tonometry to evaluate atherosclerotic changes in patients with FH (parents and their offspring). METHODS Applanation tonometry and carotid arteries sonography with evaluation of the intima-media complex thickness (IMCT) and application of the 2DST were performed in 20 families with FH (20 parents and 29 children). The same size control group (age and sex matched) was included. Results were compared between peers and between generations together with the correlation analysis. RESULTS Adults with FH, in comparison with healthy peers, presented significantly more atherosclerotic plaques (9 vs. 2, p = 0.0230), had significantly thicker IMC (0.84 ± 0.19 vs. 0.56 ± 0.06 mm, p < 0.0001) and had stiffer arterial wall (for stain: 6.25 ± 2.3 vs. 8.15 ± 2.46, p = 0.0103). In children from both groups there were no atherosclerotic plaques and IMCT did not differ significantly (0.42 ± 0.07 vs. 0.39 ± 0.04, p = 0.1722). However, children with FH had significantly stiffer arterial wall according to 2DST (for strain: 9.22 ± 3.4 vs. 11.93 ± 3.11, p = 0.0057) and tonometry (for the pulse wave velocity: 4.5 ± 0.64 vs.3.96 ± 0.62, p = 0.0047). These parameters correlated with atherosclerosis surrogates in their parents (p < 0.001) but were not significantly affected by presence of presumed pathogenic gene variant. CONCLUSIONS Children with FH presented subclinical atherosclerosis manifested as decreased arterial wall elasticity. Degree of stiffening was associated with advancement of atherosclerosis in their parents but did not present significant association with gene variants. Sonography with application of 2DST seems to be a good candidate for comprehensive evaluation of atherosclerosis in families with FH.
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21
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Brandts J, Dharmayat KI, Ray KK, Vallejo-Vaz AJ. Familial hypercholesterolemia: is it time to separate monogenic from polygenic familial hypercholesterolemia? Curr Opin Lipidol 2020; 31:111-118. [PMID: 32332432 DOI: 10.1097/mol.0000000000000675] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
PURPOSE OF REVIEW This review explores the concepts of monogenic and the so-called polygenic familial hypercholesterolemia and how the identification of familial hypercholesterolemia as a monogenic condition and its separation from polygenic primary hypercholesterolemia may have implications for clinical practice. RECENT FINDINGS Through genetic testing, a mutation in any of the three known autosomal dominant familial hypercholesterolemia-causing genes is found in 60-80% of cases with a clinical diagnosis of definite familial hypercholesterolemia. As individuals with a polygenic basis for their hypercholesterolemia do not follow the same inheritance pattern observed in monogenic familial hypercholesterolemia, the use of family-based cascade screening in individuals with a polygenic origin is not recommend, as only 30% of relatives have an elevated LDL-C compared to the 50% in monogenic families. The presence of a causative monogenic mutation associates the highest cardiovascular risk vs. not having a mutation or having a polygenic background, providing prognostic information independent of LDL-C. It may also help assess intensity of interventions. Treatment adherence also seems to be higher after monogenic confirmation of hypercholesterolemia. SUMMARY Knowledge about the genetic status of an individual with clinical familial hypercholesterolemia (monogenic vs. polygenic) can provide a more informed understanding to evaluating risk, managing disease and opportunities for screening strategies.
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Affiliation(s)
- Julia Brandts
- Imperial Centre for Cardiovascular Disease Prevention (ICCP), Department of Primary Care and Public Health, School of Public Health, Imperial College London, London, UK
- Department of Medicine I, University Hospital RWTH Aachen, Aachen, Germany
| | - Kanika I Dharmayat
- Imperial Centre for Cardiovascular Disease Prevention (ICCP), Department of Primary Care and Public Health, School of Public Health, Imperial College London, London, UK
| | - Kausik K Ray
- Imperial Centre for Cardiovascular Disease Prevention (ICCP), Department of Primary Care and Public Health, School of Public Health, Imperial College London, London, UK
| | - Antonio J Vallejo-Vaz
- Imperial Centre for Cardiovascular Disease Prevention (ICCP), Department of Primary Care and Public Health, School of Public Health, Imperial College London, London, UK
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22
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Brunham LR, Mancini GBJ. Editorial Commentary: What Determines the Risk of Cardiovascular Disease in Familial Hypercholesterolemia? Trends Cardiovasc Med 2020; 31:216-217. [PMID: 32407995 DOI: 10.1016/j.tcm.2020.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 04/02/2020] [Indexed: 11/27/2022]
Affiliation(s)
- Liam R Brunham
- Centre for Heart Lung Innovation, University of British Columbia, Vancouver, BC, Canada; Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada; Department of Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada.
| | - G B John Mancini
- Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
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23
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Hendricks-Sturrup RM, Clark-LoCascio J, Lu CY. A Global Review on the Utility of Genetic Testing for Familial Hypercholesterolemia. J Pers Med 2020; 10:E23. [PMID: 32295171 PMCID: PMC7354443 DOI: 10.3390/jpm10020023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 04/07/2020] [Accepted: 04/08/2020] [Indexed: 12/14/2022] Open
Abstract
Familial hypercholesterolemia (FH) is a genetic disorder of cholesterol metabolism that affects an estimated 1/250 persons in the United States and abroad. FH is hallmarked by high low-density lipoprotein (LDL) cholesterol and an increased risk of premature atherosclerotic cardiovascular disease. This review summarizes recent global evidence showing the utility of FH genetic testing across diverse populations. Clinical and other qualitative outcomes following FH genetic testing were improved FH diagnosis, treatment initiation or continued treatment, treatment modification, improved total or LDL cholesterol levels, education on lifestyle management, and genetic counseling. This summary of evidence should be considered by those seeking overall evidence and knowledge gaps on the utility of FH genetic testing from a global perspective and for certain ethnic and age populations. These findings can be used to inform insurance policies and coverage decisions for FH genetic testing, policy recommendations to reduce the clinical and public health burden of FH, clinical practice and guidelines to improve the management of FH populations, and ongoing research involving FH genetic testing. We conclude that further investigations are needed to examine: (1) non-clinical outcomes following FH genetic testing; (2) patient-reported outcomes following FH genetic testing to convey patient experiences, values, and goals; and (3) clinical outcomes following FH genetic testing in non-Caucasian and pediatric populations in the United States and abroad.
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Affiliation(s)
- Rachele M. Hendricks-Sturrup
- Department of Population Medicine, Harvard Pilgrim Health Care Institute and Harvard Medical School, Boston, MA 02215, USA;
| | - Jodi Clark-LoCascio
- Pallavi Patel College of Health Care Sciences, Nova Southeastern University, Fort Lauderdale, FL 33314, USA;
| | - Christine Y. Lu
- Department of Population Medicine, Harvard Pilgrim Health Care Institute and Harvard Medical School, Boston, MA 02215, USA;
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24
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Cao YX, Liu HH, Jin JL, Sun D, Guo YL, Wu NQ, Zhu CG, Xu RX, Sun J, Santos RD, Li JJ. Plasma proprotein convertase subtilisin/kexin type 9 concentration and recurrent cardiovascular events in patients with familial hypercholesterolemia. Eur J Prev Cardiol 2019; 28:272-279. [PMID: 33891693 DOI: 10.1177/2047487319880985] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 09/17/2019] [Indexed: 12/27/2022]
Abstract
AIMS Familial hypercholesterolemia patients are characterized by early onset of coronary artery calcification and atherosclerosis, and high incidence of cardiovascular events. Plasma proprotein convertase subtilisin/kexin type 9 was reported to be a predictor for cardiovascular risk in the general population. However, its prognostic value for predicting recurrent cardiovascular events in familial hypercholesterolemia patients remains undetermined. METHODS A total of 249 patients with molecularly and/or clinically (Dutch Lipid Clinic Network score > 6) defined familial hypercholesterolemia who had experienced a first cardiovascular event were consecutively included and plasma proprotein convertase subtilisin/kexin type 9 concentrations were measured by enzyme-linked immunosorbent assay. Coronary artery calcification was measured using Agatston method and coronary severity was assessed by Gensini score, respectively. All patients received standard lipid-lowering therapy and were followed-up for recurrent cardiovascular events. Univariate and multivariate regression and Cox analyses was used to calculate hazard ratios with 95% confidence interval. RESULTS Circulating proprotein convertase subtilisin/kexin type 9 concentrations were positively associated with coronary artery calcification scores and Gensini score by both univariate and multivariate analyses. During a mean follow-up of 43 ± 19 months, 29 (11.51%) recurrent cardiovascular events occurred. Kaplan-Meier analysis showed that patients with the highest proprotein convertase subtilisin/kexin type 9 levels had the lowest event-free survival time. Multivariable Cox regression analysis revealed that proprotein convertase subtilisin/kexin type 9 was independently associated with recurrent cardiovascular events (hazard ratio: 1.45, 95% confidence interval: 1.11-1.88). The combination of proprotein convertase subtilisin/kexin type 9 to Cox prediction model led to an enhanced predictive value for recurrent cardiovascular events. CONCLUSIONS Increased level of proprotein convertase subtilisin/kexin type 9 was a significant risk factor of atherosclerosis and independently predicted future recurrent cardiovascular events in familial hypercholesterolemia patients receiving standard lipid-lowering treatment.
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Affiliation(s)
- Ye-Xuan Cao
- State Key Laboratory of Cardiovascular Disease, Fu Wai Hospital and National Center for Cardiovascular Diseases, China
| | - Hui-Hui Liu
- State Key Laboratory of Cardiovascular Disease, Fu Wai Hospital and National Center for Cardiovascular Diseases, China
| | - Jing-Lu Jin
- State Key Laboratory of Cardiovascular Disease, Fu Wai Hospital and National Center for Cardiovascular Diseases, China
| | - Di Sun
- State Key Laboratory of Cardiovascular Disease, Fu Wai Hospital and National Center for Cardiovascular Diseases, China
| | - Yuan-Lin Guo
- State Key Laboratory of Cardiovascular Disease, Fu Wai Hospital and National Center for Cardiovascular Diseases, China
| | - Na-Qiong Wu
- State Key Laboratory of Cardiovascular Disease, Fu Wai Hospital and National Center for Cardiovascular Diseases, China
| | - Cheng-Gang Zhu
- State Key Laboratory of Cardiovascular Disease, Fu Wai Hospital and National Center for Cardiovascular Diseases, China
| | - Rui-Xia Xu
- State Key Laboratory of Cardiovascular Disease, Fu Wai Hospital and National Center for Cardiovascular Diseases, China
| | - Jing Sun
- State Key Laboratory of Cardiovascular Disease, Fu Wai Hospital and National Center for Cardiovascular Diseases, China
| | - Raul D Santos
- Heart Institute (InCor), University of Sao Paulo Medical School Hospital, Brazil.,Hospital Israelita Albert Einstein, Brazil
| | - Jian-Jun Li
- State Key Laboratory of Cardiovascular Disease, Fu Wai Hospital and National Center for Cardiovascular Diseases, China
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Impact of Cholesterol on Ischemic Stroke in Different Human-Like Hamster Models: A New Animal Model for Ischemic Stroke Study. Cells 2019; 8:cells8091028. [PMID: 31487778 PMCID: PMC6770656 DOI: 10.3390/cells8091028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 08/28/2019] [Accepted: 08/29/2019] [Indexed: 12/03/2022] Open
Abstract
Rationale: While high low-density lipoprotein cholesterol (LDL-C) and low high-density lipoprotein cholesterol (HDL-C) levels are positively associated with cardiovascular events, it is still unclear whether familial hypercholesterolemia (FH) and Tangier’s disease (TD), caused by mutations in LDLR and ABCA1, respectively, influence ischemic stroke (IS) in humans. Objective: We sought to establish an easier, more effective, and time-saving method to induce IS, then studied the precise effects of different types of lipoproteins on IS. Methods and Results: A new technique termed contralateral middle cerebral artery occlusion (c-MCAO) was introduced to human-like hamster models to induce IS. Compared to traditional distal MCAO (d-MCAO) induced by electrocoagulation, c-MCAO resulted in a more severe IS with larger infarct sizes and more blood–brain barrier (BBB) disruption after 24 h. It was shown that c-MCAO markedly elicited an increase in brain infarct volume and BBB leakage in both homozygous LDLR (LDLR–/–) and ABCA1 knockout (ABCA1–/–) hamsters, but not in heterozygous LDLR knockout (LDLR+/–) hamsters when compared to wild-type (WT) controls. Conclusions: Using human-like genetically engineered hamsters, our findings demonstrated that both high LDL-C level caused by homozygous LDLR deficiency and severe low HDL-C level caused by deleting ABCA1 were risk factors of IS. As such, we believe the development of this novel IS hamster model is suitable for future ischemic/reperfusion studies.
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Banach M, Penson PE. Genetic testing in familial hypercholesterolaemia: What does it add? Eur J Prev Cardiol 2019; 27:105-106. [DOI: 10.1177/2047487319870342] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Maciej Banach
- Department of Hypertension, Chair of Nephrology and Hypertension, Medical University of Lodz, Poland
- Polish Mother’s Memorial Hospital Research Institute (PMMHRI), Lodz, Poland
- Cardiovascular Research Centre, University of Zielona Gora, Poland
| | - Peter E Penson
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, UK
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Kinnear FJ, Wainwright E, Perry R, Lithander FE, Bayly G, Huntley A, Cox J, Shield JP, Searle A. Enablers and barriers to treatment adherence in heterozygous familial hypercholesterolaemia: a qualitative evidence synthesis. BMJ Open 2019; 9:e030290. [PMID: 31371299 PMCID: PMC6677970 DOI: 10.1136/bmjopen-2019-030290] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVES Individuals with heterozygous familial hypercholesterolaemia (FH) are at high risk of developing cardiovascular disease (CVD). This risk can be substantially reduced with lifelong pharmacological and lifestyle treatment; however, research suggests adherence is poor. We synthesised the qualitative research to identify enablers and barriers to treatment adherence. DESIGN This study conducted a thematic synthesis of qualitative studies. DATA SOURCES MEDLINE, Embase, PsycINFO via OVID, Cochrane library and CINAHL databases and grey literature sources were searched through September 2018. ELIGIBILITY CRITERIA We included studies conducted in individuals with FH, and their family members, which reported primary qualitative data regarding their experiences of and beliefs about their condition and its treatment. DATA EXTRACTION AND SYNTHESIS Quality assessment was undertaken using the Critical Appraisal Skills Programme for qualitative studies. A thematic synthesis was conducted to uncover descriptive and generate analytical themes. These findings were then used to identify enablers and barriers to treatment adherence for application in clinical practice. RESULTS 24 papers reporting the findings of 15 population samples (264 individuals with FH and 13 of their family members) across 8 countries were included. Data captured within 20 descriptive themes were considered in relation to treatment adherence and 6 analytical themes were generated: risk assessment; perceived personal control of health; disease identity; family influence; informed decision-making; and incorporating treatment into daily life. These findings were used to identify seven enablers (eg, 'commencement of treatment from a young age') and six barriers (eg, 'incorrect and/or inadequate knowledge of treatment advice') to treatment adherence. There were insufficient data to explore if the findings differed between adults and children. CONCLUSIONS The findings reveal several enablers and barriers to treatment adherence in individuals with FH. These could be used in clinical practice to facilitate optimal adherence to lifelong treatment thereby minimising the risk of CVD in this vulnerable population. PROSPERO REGISTRATION NUMBER CRD42018085946.
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Affiliation(s)
- Fiona J Kinnear
- The National Institute for Health Research (NIHR), Bristol Biomedical Research Centre (BRC), Nutrition theme, University Hospitals Bristol NHS Foundation Trust and the University of Bristol, Bristol, UK
| | - Elaine Wainwright
- Psychology Department, Bath Spa University, Bath, UK
- Department for Health, University of Bath, Bath, UK
| | - Rachel Perry
- The National Institute for Health Research (NIHR), Bristol Biomedical Research Centre (BRC), Nutrition theme, University Hospitals Bristol NHS Foundation Trust and the University of Bristol, Bristol, UK
| | - Fiona E Lithander
- The National Institute for Health Research (NIHR), Bristol Biomedical Research Centre (BRC), Nutrition theme, University Hospitals Bristol NHS Foundation Trust and the University of Bristol, Bristol, UK
| | - Graham Bayly
- Department of Clinical Biochemistry, University Hospitals Bristol NHS Foundation Trust, Bristol, UK
| | - Alyson Huntley
- Population Health Science, Bristol Medical School, University of Bristol, Bristol, UK
| | - Jennifer Cox
- The National Institute for Health Research (NIHR), Bristol Biomedical Research Centre (BRC), Nutrition theme, University Hospitals Bristol NHS Foundation Trust and the University of Bristol, Bristol, UK
| | - Julian Ph Shield
- The National Institute for Health Research (NIHR), Bristol Biomedical Research Centre (BRC), Nutrition theme, University Hospitals Bristol NHS Foundation Trust and the University of Bristol, Bristol, UK
| | - Aidan Searle
- The National Institute for Health Research (NIHR), Bristol Biomedical Research Centre (BRC), Nutrition theme, University Hospitals Bristol NHS Foundation Trust and the University of Bristol, Bristol, UK
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