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Jones LK, Campbell-Salome G, Walters NL, Brangan A, Morgan KM, Tricou EP, Lindsey Mills ZT, McGowan MP, Gidding SS, Johns AM, Kirchner HL, Rahm AK, Sturm AC. IMPACT-FH Study for Implementing Innovative Family Communication and Cascade Testing Strategies for Familial Hypercholesterolemia. JACC. ADVANCES 2024; 3:101198. [PMID: 39238848 PMCID: PMC11375316 DOI: 10.1016/j.jacadv.2024.101198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 06/11/2024] [Accepted: 06/18/2024] [Indexed: 09/07/2024]
Abstract
Background Relatives of probands diagnosed with familial hypercholesterolemia (FH) should undergo cascade testing for FH. Objectives The purpose of this study was to evaluate probands' choices of innovative strategies to communicate their FH result with relatives and facilitate cascade testing uptake. Methods Probands with an FH genetic result from the MyCode Community Health Initiative could choose to share their FH result with adult blood relatives via the Family and Healthcare Professional Packet (packet), family sharing and cascade chatbots (chatbot), and/or FH Outreach and Support Program (direct contact). Cascade testing uptake was measured as reported completion of genetic or cholesterol testing. Generalized estimating equations models were used to identify factors associated with testing. Results One hundred seventy five probands received an FH result, median age was 58.9 (IQR: 44.9-69.3), and 58.9% were female. Probands shared information about 1,915 adult and 163 minor relatives (11.9 relatives per proband). Seventy percent of probands (121/175) selected at least one strategy for at least one adult relative. An average of 1.2 strategies was selected per adult relative. Cascade testing was completed for 26.6% (144/541) of adults with at least one strategy selected, 2.4% (33/1,374) of adults without a strategy selected, and 25.2% (41/163) of minor relatives. Factors associated with increased cascade testing uptake were selection of at least one strategy (6.32 higher odds), specifically, selection of direct contact (16.78 higher odds). Conclusions Strategies implemented improved FH cascade testing uptake compared to previous estimates and in families where no strategy was selected. Overall uptake remains insufficient, which can be attributed to probands reluctance to select a strategy for many relatives.
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Affiliation(s)
- Laney K Jones
- Department of Genomic Health, Research Institute, Geisinger, Danville, Pennsylvania, USA
- Heart and Vascular Institute, Geisinger, Danville, Pennsylvania, USA
| | - Gemme Campbell-Salome
- Department of Genomic Health, Research Institute, Geisinger, Danville, Pennsylvania, USA
- Department of Population Health Sciences, Research Institute, Geisinger, Danville, Pennsylvania, USA
| | - Nicole L Walters
- Department of Genomic Health, Research Institute, Geisinger, Danville, Pennsylvania, USA
| | - Andrew Brangan
- Department of Genomic Health, Research Institute, Geisinger, Danville, Pennsylvania, USA
| | - Kelly M Morgan
- Department of Genomic Health, Research Institute, Geisinger, Danville, Pennsylvania, USA
| | | | - Zoe T Lindsey Mills
- Department of Genomic Health, Research Institute, Geisinger, Danville, Pennsylvania, USA
| | | | - Samuel S Gidding
- Department of Genomic Health, Research Institute, Geisinger, Danville, Pennsylvania, USA
| | - Alicia M Johns
- Biostatistics Core, Research Institute, Geisinger, Danville, Pennsylvania, USA
| | - H Lester Kirchner
- Department of Population Health Sciences, Research Institute, Geisinger, Danville, Pennsylvania, USA
| | - Alanna Kulchak Rahm
- Department of Genomic Health, Research Institute, Geisinger, Danville, Pennsylvania, USA
| | - Amy C Sturm
- Department of Genomic Health, Research Institute, Geisinger, Danville, Pennsylvania, USA
- Heart and Vascular Institute, Geisinger, Danville, Pennsylvania, USA
- 23andMe, Sunnyvale, California, USA
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2
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Kwon GE, Son HH, Moon JY, Lee A, Jung MK, Rhie S, Park MJ, Garg A, Yoo EG, Choi MH. Dried blood spot-based free sterol signatures in sitosterolemia diagnostics. Clin Chim Acta 2024; 562:119886. [PMID: 39053727 DOI: 10.1016/j.cca.2024.119886] [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] [Received: 08/25/2023] [Revised: 07/19/2024] [Accepted: 07/21/2024] [Indexed: 07/27/2024]
Abstract
BACKGROUND Sitosterolemia is a rare inherited lipid metabolic disorder characterized by increased levels of plant sterols and accelerated atherosclerosis. Although early detection is beneficial for the prevention of disease progression, it is largely underdiagnosed by routine screening based on conventional lipid profiles. MATERIALS AND METHODS A gas chromatography-mass spectrometry (GC-MS)-based profiling has been developed and validated to measure the levels of biologically active free sterols, including five endogenous sterols and three plant sterols (sitosterol, campesterol, and stigmasterol) in dried blood spot (DBS). RESULTS Within- and between-run precisions were 1.4-11.1 % and 2.2-14.1 %, respectively, while the accuracies were all 86.3 ∼ 121.9 % with the correlation coefficients (r2) > 0.988 for all the sterols. In the patients (four girls and two boys, 6.5 ± 2.8 years), sitosterol levels were significantly increased, with an optimal cut-off value of 2.5 µg/mL distinguishing them from ninety-three age-matched healthy children. A cut-off value of 31.9 µg/mL differentiated the patients from six ABCG5/ABCG8 heterozygous carriers. In addition, the molecular ratios of sitosterol to cholesterol, desmosterol, and 7-dehydrocholesterol provided excellent cut-off values of 26.3, 67.6, and 21.6, respectively, to distinguish patients from both healthy controls and heterozygous carriers. CONCLUSIONS The novel DBS-based GC-MS profiling of free sterols accurately identified patients with sitosterolemia, with a performance comparable to that of a serum assay. The DBS profiling could be more feasible method in clinical practice as well as population screening programs, and it can provide diagnostic cut-off values for individual plant sterols.
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MESH Headings
- Humans
- Lipid Metabolism, Inborn Errors/blood
- Lipid Metabolism, Inborn Errors/diagnosis
- Female
- Male
- Intestinal Diseases/blood
- Intestinal Diseases/diagnosis
- Gas Chromatography-Mass Spectrometry
- Child
- Phytosterols/blood
- Phytosterols/adverse effects
- Dried Blood Spot Testing/methods
- Hypercholesterolemia/blood
- Hypercholesterolemia/diagnosis
- Child, Preschool
- ATP Binding Cassette Transporter, Subfamily G, Member 5/blood
- ATP Binding Cassette Transporter, Subfamily G, Member 5/genetics
- Sterols/blood
- ATP Binding Cassette Transporter, Subfamily G, Member 8/blood
- ATP Binding Cassette Transporter, Subfamily G, Member 8/genetics
- Lipoproteins/blood
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Affiliation(s)
- Go Eun Kwon
- Center for Advanced Biomolecular Recognition, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Hyun-Hwa Son
- Center for Advanced Biomolecular Recognition, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Ju-Yeon Moon
- Center for Advanced Biomolecular Recognition, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Ayoung Lee
- Center for Advanced Biomolecular Recognition, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Mo Kyung Jung
- Department of Pediatrics, CHA Bundang Medical Center, Gyeonggi-do 13496, Republic of Korea
| | - Seonkyeong Rhie
- Department of Pediatrics, CHA Bundang Medical Center, Gyeonggi-do 13496, Republic of Korea
| | - Mi Jung Park
- Department of Pediatrics, Inje University Sanggye Paik Hospital, Seoul 01757, Republic of Korea
| | - Abhimanyu Garg
- Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Eun-Gyong Yoo
- Department of Pediatrics, CHA Bundang Medical Center, Gyeonggi-do 13496, Republic of Korea.
| | - Man Ho Choi
- Center for Advanced Biomolecular Recognition, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.
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3
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Bae JH. Advancing Familial Hypercholesterolemia Detection and Management in South Korea. Korean Circ J 2024; 54:54.e98. [PMID: 39175353 DOI: 10.4070/kcj.2024.0244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2024] [Accepted: 08/04/2024] [Indexed: 08/24/2024] Open
Affiliation(s)
- Jae Hyun Bae
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea.
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4
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Tarugi P, Bertolini S, Calandra S, Arca M, Angelico F, Casula M, Cefalù AB, D'Erasmo L, Fortunato G, Perrone-Filardi P, Rubba P, Suppressa P, Averna M, Catapano AL. Consensus document on diagnosis and management of familial hypercholesterolemia from the Italian Society for the Study of Atherosclerosis (SISA). Nutr Metab Cardiovasc Dis 2024; 34:1819-1836. [PMID: 38871496 DOI: 10.1016/j.numecd.2024.05.002] [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: 12/19/2023] [Revised: 04/04/2024] [Accepted: 05/03/2024] [Indexed: 06/15/2024]
Abstract
AIMS Familial Hypercholesterolemia (FH) is a genetic disorder of lipoprotein metabolism that causes an increased risk of premature atherosclerotic cardiovascular disease (ASCVD). Although early diagnosis and treatment of FH can significantly improve the cardiovascular prognosis, this disorder is underdiagnosed and undertreated. For these reasons the Italian Society for the Study of Atherosclerosis (SISA) assembled a Consensus Panel with the task to provide guidelines for FH diagnosis and treatment. DATA SYNTHESIS Our guidelines include: i) an overview of the genetic complexity of FH and the role of candidate genes involved in LDL metabolism; ii) the prevalence of FH in the population; iii) the clinical criteria adopted for the diagnosis of FH; iv) the screening for ASCVD and the role of cardiovascular imaging techniques; v) the role of molecular diagnosis in establishing the genetic bases of the disorder; vi) the current therapeutic options in both heterozygous and homozygous FH. Treatment strategies and targets are currently based on low-density lipoprotein cholesterol (LDL-C) levels, as the prognosis of FH largely depends on the magnitude of LDL-C reduction achieved by lipid-lowering therapies. Statins with or without ezetimibe are the mainstay of treatment. Addition of novel medications like PCSK9 inhibitors, ANGPTL3 inhibitors or lomitapide in homozygous FH results in a further reduction of LDL-C levels. LDL apheresis is indicated in FH patients with inadequate response to cholesterol-lowering therapies. CONCLUSION FH is a common, treatable genetic disorder and, although our understanding of this disease has improved, many challenges still remain with regard to its identification and management.
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Affiliation(s)
- Patrizia Tarugi
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy.
| | | | - Sebastiano Calandra
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Marcello Arca
- Department of Translational and Precision Medicine (DTPM), Sapienza University of Rome, Policlinico Umberto I, Rome, Italy
| | | | - Manuela Casula
- Department of Pharmacological and Biomolecular Sciences (DisFeB), Epidemiology and Preventive Pharmacology Service (SEFAP), University of Milan, Milan, Italy; IRCCS Multimedica, Sesto San Giovanni (Milan), Italy
| | - Angelo B Cefalù
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties (PROMISE), University of Palermo, Palermo, Italy
| | - Laura D'Erasmo
- Department of Translational and Precision Medicine (DTPM), Sapienza University of Rome, Policlinico Umberto I, Rome, Italy
| | - Giuliana Fortunato
- Department of Medicina Molecolare e Biotecnologie Mediche, University of Naples Federico II and CEINGE Biotecnologie avanzate "Franco Salvatore", Naples, Italy
| | | | - Paolo Rubba
- Department of Internal Medicine and Surgery, Federico II University, Naples, Italy
| | - Patrizia Suppressa
- Department of Internal Medicine and Rare Diseases Centre "C. Frugoni", University of Bari A. Moro, Bari, Italy
| | - Maurizio Averna
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties (PROMISE), University of Palermo, Palermo, Italy; Biophysical Institute CNR, Palermo, Italy
| | - Alberico L Catapano
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Milano, Italy; IRCCS Multimedica, Milano, Italy
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5
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Lokkesmoe R, Hamilton L. The Role of Reverse Cascade Screening in Children with Familial Hypercholesterolemia: A Literature Review and Analysis. Curr Atheroscler Rep 2024; 26:427-433. [PMID: 38888696 DOI: 10.1007/s11883-024-01211-9] [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] [Accepted: 05/09/2024] [Indexed: 06/20/2024]
Abstract
PURPOSE OF REVIEW Familial Hypercholesterolemia (FH) is a common genetic disorder characterized by lifelong elevation of severely elevated plasma low-density lipoprotein cholesterol. Atherosclerotic cardiovascular disease (ASCVD) risk accelerates after age 20. Early diagnosis allows for treatment of children with FH and creates an opportunity to identify affected relatives through reverse cascade screening (RCS). Historically, cascade screening has had little impact on identifying individuals with FH. RECENT FINDINGS Universal cholesterol screening (UCS) to identify youth with FH, beginning at 9-11 years-of-age, is currently recommended in the U.S. The European Atherosclerosis Society has called for UCS worldwide, emphasizing the need for educational programs to increase awareness amongst healthcare professions. Underdiagnoses and undertreatment of FH remain high. Improved rates of UCS and a systematic approach to RCS are needed. The absence of a coordinated RCS program limits the benefits of UCS. Further research is needed to identify barriers to cholesterol screening in youth.
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Affiliation(s)
- Ryan Lokkesmoe
- Cook Children's Medical Center, Department of Endocrinology, 801 7th Ave, Fort Worth, TX, 76104, USA.
| | - Luke Hamilton
- Cook Children's Medical Center, Department of Research and Endocrinology, Fort Worth, TX, USA
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6
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Raslova K, Donicova V, Gonova K, Klabnik A, Tichy L, Bridges I, Buckova D, Zachlederova M, Freiberger T, Vohnout B. Detecting familial hypercholesterolemia: An observational study leveraging mandatory universal pediatric total cholesterol screening in Slovakia. J Clin Lipidol 2024; 18:e537-e547. [PMID: 38955586 DOI: 10.1016/j.jacl.2024.03.009] [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] [Received: 05/09/2023] [Revised: 03/11/2024] [Accepted: 03/26/2024] [Indexed: 07/04/2024]
Abstract
BACKGROUND In Slovakia, a mandatory national universal pediatric total cholesterol (TC) screening program is in place to identify cases of familial hypercholesterolemia (FH). However, the program's effectiveness has not been systematically assessed. OBJECTIVE This study aimed to estimate the prevalence of FH among parents of children that had elevated TC levels identified during screening. METHODS This prospective, non-interventional, observational study enrolled parents of 11-year-old children who underwent TC screening in 23 selected pediatric outpatient clinics between 2017 and 2018. FH was diagnosed using the Dutch Lipid Clinic Network (DLCN) criteria and targeted next-generation sequencing. The primary objective was to estimate the proportion of children with a TC level of >188 mg/dL (>4.85 mmol/L) who had a parent with a confirmed diagnosis of FH. RESULTS A total of 112 parents of 56 children with an elevated TC level were enrolled. Five children (8.9%) had a parent in whom FH was genetically confirmed. Without genetic analysis, all five parents would only be diagnosed with "possible FH" by DLCN criteria. Of parents, 83.9% (n = 94/112) had an low-density lipoprotein cholesterol (LDL-C) level of >116 mg/dL (>3 mmol/L), but only 5.3% (n = 5/94) received lipid-lowering therapy. Among the five parents with genetically confirmed FH, all had an LDL-C level >116 mg/dL (>3 mmol/L), with a mean (±SD) of 191 (±24) mg/dL (4.94 [±0.61] mmol/L). Only two of these parents received lipid-lowering therapy. CONCLUSIONS The present study demonstrates the significance of mandatory universal pediatric TC screening in identifying families with FH and other at-risk families in need of lipid-lowering therapy.
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Affiliation(s)
- Katarina Raslova
- Metabolic Center, Ltd, Coordination for Familial Hyperlipidemias, Slovak Medical University, Bratislava, Slovakia (Dr Raslova).
| | - Viera Donicova
- Outpatient Department of Internal Medicine and Diabetology, Košice, Slovakia (Dr Donicova)
| | - Katarina Gonova
- Internal Outpatient Clinic, MedPed Lipid Clinic, Piestany, Slovakia (Dr Gonova); Faculty of Public Health, Slovak Medical University, Bratislava, Slovakia (Dr Gonova)
| | - Alexander Klabnik
- Cardiology Outpatient Clinic, MedPed Lipid Clinic, Namestovo, Slovakia (Dr Klabnik)
| | - Lukas Tichy
- Centre of Molecular Biology and Genetics, Department of Internal Medicine - Hematology and Oncology, University Hospital Brno, Brno, Czech Republic (Dr Tichy); Medical Faculty, Masaryk University, Brno, Czech Republic (Drs Tichy and Freiberger)
| | - Ian Bridges
- Amgen UK Ltd, Uxbridge, United Kingdom (Dr Bridges)
| | - Dagmar Buckova
- Amgen Slovakia s.r.o., Bratislava, Slovakia (Dr Buckova)
| | | | - Tomas Freiberger
- Medical Faculty, Masaryk University, Brno, Czech Republic (Drs Tichy and Freiberger); Centre of Cardiovascular Surgery and Transplantation, Brno, Czech Republic (Dr Freiberger).
| | - Branislav Vohnout
- Diabetes and Lipid Outpatient Clinic, Diabeda s.r.o., Bratislava, Slovakia (Dr Vohnout); Coordination Center for Familial Hyperlipidemias, Institute of Nutrition, Department of Diabetes, Slovak Medical University, Bratislava, Slovakia (Dr Vohnout); Department of Epidemiology, School of Medicine, Comenius University, Bratislava, Slovakia (Dr Vohnout).
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7
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Flyer JN, Congdon E, Yeager SB, Drucker N, Giddins NG, Haxel CS, Burstein DS, O'Connor KHC, Remy HH, Terrien HE, Robinson KJ. Improvement Science Increases Routine Lipid Screening in General Pediatric Cardiology. J Pediatr 2024; 273:114118. [PMID: 38815743 DOI: 10.1016/j.jpeds.2024.114118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 05/17/2024] [Accepted: 05/22/2024] [Indexed: 06/01/2024]
Abstract
OBJECTIVE To evaluate the effectiveness of patient education, physician counseling, and point-of-care (POC) testing on improving adherence to lipid screening national guidelines in a general pediatric cardiology practice (2017-2023). STUDY DESIGN Regional primary care providers were surveyed regarding lipid screening practices. Key drivers were categorized (physician, patient, and system) with corresponding interventions. Pediatric cardiologists started offering lipid screening during regular visits by providing families with preventive cardiovascular education materials and lab phlebotomy testing. System redesign included educational posters, clinical intake protocol, physician counseling, electronic health record integration, and POC testing. Run charts and statistical process control charts measured screening rates and key processes. RESULTS The primary care survey response rate was 32% (95/294); 97% supported pediatric cardiologists conducting routine lipid screening. Pediatric cardiology mean baseline lipid screening rate was 0%, increased to 7% with patient education, and to 61% after system redesign including POC testing. Screening rates among 1467 patients were similar across age groups (P = .98). More patients received lipid screening by POC (91.7%) compared with phlebotomy (8.3%). Lipid abnormalities detected did not differ by screening methodology (P = .49). CONCLUSION Patient education, counseling, and POC testing improved adherence to national lipid screening guidelines, providing a possible model for primary care implementation.
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Affiliation(s)
- Jonathan N Flyer
- Department of Pediatrics, The Robert Larner M.D. College of Medicine at the University of Vermont, Burlington, VT; Division of Pediatric Cardiology, The University of Vermont Children's Hospital, Burlington, VT
| | - Elizabeth Congdon
- Department of Pediatrics, The Robert Larner M.D. College of Medicine at the University of Vermont, Burlington, VT; Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT
| | - Scott B Yeager
- Department of Pediatrics, The Robert Larner M.D. College of Medicine at the University of Vermont, Burlington, VT; Division of Pediatric Cardiology, The University of Vermont Children's Hospital, Burlington, VT
| | - Nancy Drucker
- Department of Pediatrics, The Robert Larner M.D. College of Medicine at the University of Vermont, Burlington, VT; Division of Pediatric Cardiology, The University of Vermont Children's Hospital, Burlington, VT
| | - Niels G Giddins
- Department of Pediatrics, The Robert Larner M.D. College of Medicine at the University of Vermont, Burlington, VT; Division of Pediatric Cardiology, The University of Vermont Children's Hospital, Burlington, VT
| | - Caitlin S Haxel
- Department of Pediatrics, The Robert Larner M.D. College of Medicine at the University of Vermont, Burlington, VT; Division of Pediatric Cardiology, The University of Vermont Children's Hospital, Burlington, VT
| | - Danielle S Burstein
- Department of Pediatrics, The Robert Larner M.D. College of Medicine at the University of Vermont, Burlington, VT; Division of Pediatric Cardiology, The University of Vermont Children's Hospital, Burlington, VT
| | - Kelsey H C O'Connor
- Division of Pediatric Cardiology, The University of Vermont Children's Hospital, Burlington, VT
| | - Heather H Remy
- Division of Pediatric Cardiology, The University of Vermont Children's Hospital, Burlington, VT
| | - Hannah E Terrien
- Division of Pediatric Cardiology, The University of Vermont Children's Hospital, Burlington, VT
| | - Keith J Robinson
- Department of Pediatrics, The Robert Larner M.D. College of Medicine at the University of Vermont, Burlington, VT; Vermont Child Health Improvement Program, University of Vermont, Burlington, VT
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8
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Gidding SS, Ballantyne CM, Cuchel M, de Ferranti S, Hudgins L, Jamison A, McGowan MP, Peterson AL, Steiner RD, Uveges MK, Wang Y. It is Time to Screen for Homozygous Familial Hypercholesterolemia in the United States. Glob Heart 2024; 19:43. [PMID: 38708402 PMCID: PMC11067975 DOI: 10.5334/gh.1316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Accepted: 03/06/2024] [Indexed: 05/07/2024] Open
Abstract
Homozygous familial hypercholesterolemia (HoFH) is an ultra-rare inherited condition that affects approximately one in 300,000 people. The disorder is characterized by extremely high, life-threatening levels of low-density lipoprotein (LDL) cholesterol from birth, leading to significant premature cardiovascular morbidity and mortality, if left untreated. Homozygous familial hypercholesterolemia is severely underdiagnosed and undertreated in the United States (US), despite guidelines recommendations for universal pediatric lipid screening in children aged 9-11. Early diagnosis and adequate treatment are critical in averting premature cardiovascular disease in individuals affected by HoFH. Yet, an unacceptably high number of people living with HoFH remain undiagnosed, misdiagnosed, and/or receive a late diagnosis, often after a major cardiovascular event. The emergence of novel lipid-lowering therapies, along with the realization that diagnosis is too often delayed, have highlighted an urgency to implement policies that ensure timely detection of HoFH in the US. Evidence from around the world suggests that a combination of universal pediatric screening and cascade screening strategies constitutes an effective approach to identifying heterozygous familial hypercholesterolemia (HeFH). Nevertheless, HoFH and its complications manifest much earlier in life compared to HeFH. To date, little focus has been placed on the detection of HoFH in very young children and/or infants. The 2023 Updated European Atherosclerosis Society Consensus Statement on HoFH has recommended, for the first time, broadening pediatric guidelines to include lipid screening of newborn infants. Some unique aspects of HoFH need to be considered before implementing newborn screening. As such, insights from pilot studies conducted in Europe may provide some preliminary guidance. Our paper proposes a set of actionable measures that states can implement to reduce the burden of HoFH. It also outlines key research and policy gaps that need to be addressed in order to pave the way for universal newborn screening of HoFH in the US.
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Affiliation(s)
| | | | - Marina Cuchel
- Perelman School of Medicine, University of Pennsylvania, US
| | | | | | | | - Mary P. McGowan
- Family Heart Foundation, US
- Dartmouth Hitchcock Medical Center, US
| | - Amy L. Peterson
- University of Wisconsin School of Medicine and Public Health, US
| | - Robert D. Steiner
- Leadiant, Mirum, PTC-Consultant, PreventionGenetics, part of Exact Sciences-Employee with equity, University of Wisconsin School of Medicine and Public Health, US
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9
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Ibrahim S, de Goeij JN, Nurmohamed NS, Pang J, van den Bosch SE, Martens FMAC, Roeters van Lennep JE, Corpeleijn W, Tumkaya T, Hovingh GK, Watts GF, Stroes ESG, Reeskamp LF. Unexpected gaps in knowledge of familial hypercholesterolaemia among Dutch general practitioners. Neth Heart J 2024; 32:213-220. [PMID: 38573436 DOI: 10.1007/s12471-024-01862-y] [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: 02/22/2024] [Indexed: 04/05/2024] Open
Abstract
BACKGROUND Familial hypercholesterolaemia (FH) warrants early diagnosis to prevent premature atherosclerotic cardiovascular disease (CVD). However, underdiagnosis and undertreatment of FH persist. This study aimed to assess the knowledge and practice of FH care among general practitioners (GPs) in the Netherlands. METHODS An internationally standardised, online questionnaire was sent to Dutch GPs between February 2021 and July 2022. The survey assessed knowledge and awareness of FH, encompassing general familiarity, awareness of management guidelines, inheritance, prevalence, CVD risk, and clinical practice related to FH. Comparative analysis was performed using data on primary care physicians from Western Australia, the Asia-Pacific region and the United Kingdom. RESULTS Of the 221 participating GPs, 62.4% rated their familiarity with FH as above average (score > 4 on a 1-7 scale), with 91.4% considering themselves familiar with FH treatment and referral guidelines. Correct identification of the FH definition, typical lipid profile, inheritance pattern, prevalence and CVD risk was reported by 83.7%, 87.8%, 55.7%, 19.5%, and 13.6% of the respondents, respectively. Of the participants, 58.4% answered fewer than half of the 8 knowledge questions correctly. Dutch GPs reported greater FH familiarity and guideline awareness compared with their international counterparts but exhibited similar low performance on FH knowledge questions. CONCLUSION Despite the Netherlands' relatively high FH detection rate, substantial knowledge gaps regarding FH persist among Dutch GPs, mirroring global trends. Enhanced FH education and awareness in primary care are imperative to improve FH detection and ensure adequate treatment. Targeting the global suboptimal understanding of FH might require international efforts.
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Affiliation(s)
- Shirin Ibrahim
- Department of Vascular Medicine, Amsterdam University Medical Centres, location Amsterdam University Medical Centre-University of Amsterdam, Amsterdam, The Netherlands
| | - Jim N de Goeij
- Department of Vascular Medicine, Amsterdam University Medical Centres, location Amsterdam University Medical Centre-University of Amsterdam, Amsterdam, The Netherlands
| | - Nick S Nurmohamed
- Department of Vascular Medicine, Amsterdam University Medical Centres, location Amsterdam University Medical Centre-University of Amsterdam, Amsterdam, The Netherlands
- Department of Cardiology, Amsterdam University Medical Centres, location Vrije Universiteit medical centre, Amsterdam, The Netherlands
| | - Jing Pang
- Medical School, University of Western Australia, Perth, WA, Australia
| | - Sibbeliene E van den Bosch
- Department of Paediatrics, Division of Metabolic Disorders, Emma Children's Hospital, Amsterdam University Medical Centres and Gastroenterology, Endocrinology & Metabolism (AGEM), location Academic Medical Centre-University of Amsterdam, Amsterdam, The Netherlands
| | - Fabrice M A C Martens
- Department of Cardiology, Amsterdam University Medical Centres, location Vrije Universiteit medical centre, Amsterdam, The Netherlands
| | | | - Willemijn Corpeleijn
- Department of Paediatrics, Division of Metabolic Disorders, Emma Children's Hospital, Amsterdam University Medical Centres and Gastroenterology, Endocrinology & Metabolism (AGEM), location Academic Medical Centre-University of Amsterdam, Amsterdam, The Netherlands
| | - Talip Tumkaya
- Department of General Practice, Huisartsenpraktijk Parkhof, Maassluis, The Netherlands
| | - G Kees Hovingh
- Department of Vascular Medicine, Amsterdam University Medical Centres, location Amsterdam University Medical Centre-University of Amsterdam, Amsterdam, The Netherlands
| | - Gerald F Watts
- Medical School, University of Western Australia, Perth, WA, Australia
- Department of Cardiology, Royal Perth Hospital, Perth, WA, Australia
| | - Erik S G Stroes
- Department of Vascular Medicine, Amsterdam University Medical Centres, location Amsterdam University Medical Centre-University of Amsterdam, Amsterdam, The Netherlands
| | - Laurens F Reeskamp
- Department of Vascular Medicine, Amsterdam University Medical Centres, location Amsterdam University Medical Centre-University of Amsterdam, Amsterdam, The Netherlands.
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Schubert TJ, Gidding SS, Jones LK. Overcoming the real and imagined barriers to cholesterol screening in pediatrics. J Clin Lipidol 2024; 18:e297-e307. [PMID: 38485620 PMCID: PMC11209759 DOI: 10.1016/j.jacl.2024.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 02/19/2024] [Accepted: 02/21/2024] [Indexed: 03/20/2024]
Abstract
Recent guidance by the United States Preventive Services Task Force has renewed the debate surrounding the benefits of pediatric lipid screening. This commentary reviews the evolution of the pediatric lipid screening recommendations in the United States, followed by an exploration of real and imagined challenges that prevent optimal cholesterol screening rates in children. Real challenges substantively prevent the uptake of these guidelines into practice; imagined challenges, such as identifying the best age to screen, are often context-dependent and can also be surmounted. Experiences from other countries identify potential facilitators to improving screening and additional barriers. Implementation science provides guidance on overcoming the real barriers, translating evidence-based recommendations into clinical practice, and informing the next wave of solutions to overcome these challenges.
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Affiliation(s)
- Tyler J Schubert
- Department of Genomic Health, Geisinger, Danville, PA, USA; Geisinger Commonwealth School of Medicine, Scranton, PA, USA.
| | | | - Laney K Jones
- Department of Genomic Health, Geisinger, Danville, PA, USA; Heart and Vascular Institute, Geisinger, Danville, PA, USA.
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11
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Zhang Y, de Ferranti SD, Moran AE. Genetic testing for familial hypercholesterolemia. Curr Opin Lipidol 2024; 35:93-100. [PMID: 38299384 PMCID: PMC10932851 DOI: 10.1097/mol.0000000000000925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
PURPOSE OF REVIEW Despite familial hypercholesterolemia (FH) being the most common genetic cause of cardiovascular disease (CVD), genetic testing is rarely utilized in the US. This review summarizes what is known about the clinical utility of genetic testing and its role in the diagnosis and screening of FH. RECENT FINDINGS The presence of an FH-causative variant is associated with a substantially higher risk of CVD, even when low-density lipoprotein cholesterol (LDL-C) levels are only modestly elevated. Genetic testing can facilitate the identification of FH cases who may be missed by clinical diagnostic criteria, improve risk stratification beyond LDL-C and family history, guide treatment decisions, and improve treatment initiation and adherence. Genetic testing can be incorporated into FH screening and diagnosis algorithms, including cascade, targeted, and universal screening. Integrating genetic testing into cascade screening can enhance the effectiveness of the process. Several models of universal FH screening with coordinated genetic and lipid testing are feasible and effective. SUMMARY More systematic integration of genetic testing into FH diagnosis and screening can significantly reduce the burden of this condition through early detection and treatment. Further pragmatic implementation studies are needed to determine how to more effectively and affordably integrate genetic testing into clinical lipid screening programs.
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Affiliation(s)
- Yiyi Zhang
- Division of General Medicine, Columbia University, New York, NY
| | - Sarah D. de Ferranti
- Department of Cardiology, Boston Children’s Hospital, Boston, MA
- Department of Pediatrics, Harvard Medical School, Boston, MA
| | - Andrew E. Moran
- Division of General Medicine, Columbia University, New York, NY
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12
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Tada H, Kawashiri MA, Nohara A, Sekiya T, Watanabe A, Takamura M. Genetic Counseling and Genetic Testing for Familial Hypercholesterolemia. Genes (Basel) 2024; 15:297. [PMID: 38540356 PMCID: PMC10970256 DOI: 10.3390/genes15030297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 02/15/2024] [Accepted: 02/19/2024] [Indexed: 06/14/2024] Open
Abstract
Familial hypercholesterolemia (FH) is one of the most common autosomal codominant Mendelian diseases. The major complications of FH include tendon and cutaneous xanthomas and coronary artery disease (CAD) associated with a substantial elevation of serum low-density lipoprotein levels (LDL). Genetic counseling and genetic testing for FH is useful for its diagnosis, risk stratification, and motivation for further LDL-lowering treatments. In this study, we summarize the epidemiology of FH based on numerous genetic studies, including its pathogenic variants, genotype-phenotype correlation, prognostic factors, screening, and usefulness of genetic counseling and genetic testing. Due to the variety of treatments available for this common Mendelian disease, genetic counseling and genetic testing for FH should be implemented in daily clinical practice.
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Affiliation(s)
- Hayato Tada
- Division of Cardiovascular Medicine, Kanazawa University Graduate School of Medicine, Kanazawa 920-8640, Japan;
| | - Masa-aki Kawashiri
- Department of Internal Medicine, Kaga Medical Center, Kaga 922-8522, Japan;
| | - Atsushi Nohara
- Department of Clinical Genetics, Ishikawa Prefectural Central Hospital, Kanazawa 920-8530, Japan;
| | - Tomoko Sekiya
- Division of Clinical Genetics, Kanazawa University Hospital, Kanazawa 920-8641, Japan; (T.S.); (A.W.)
| | - Atsushi Watanabe
- Division of Clinical Genetics, Kanazawa University Hospital, Kanazawa 920-8641, Japan; (T.S.); (A.W.)
| | - Masayuki Takamura
- Division of Cardiovascular Medicine, Kanazawa University Graduate School of Medicine, Kanazawa 920-8640, Japan;
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13
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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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14
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Dharmayat KI, Vallejo-Vaz AJ, Stevens CA, Brandts JM, Lyons AR, Groselj U, Abifadel M, Aguilar-Salinas CA, Alhabib K, Alkhnifsawi M, Almahmeed W, Alnouri F, Alonso R, Al-Rasadi K, Ashavaid TF, Banach M, Béliard S, Binder C, Bourbon M, Chlebus K, Corral P, Cruz D, Descamps OS, Drogari E, Durst R, Ezhov MV, Genest J, Harada-Shiba M, Holven KB, Humphries SE, Khovidhunkit W, Lalic K, Laufs U, Liberopoulos E, Roeters van Lennep J, Lima-Martinez MM, Lin J, Maher V, März W, Miserez AR, Mitchenko O, Nawawi H, Panayiotou AG, Paragh G, Postadzhiyan A, Reda A, Reiner Ž, Reyes X, Sadiq F, Sahebkar A, Schunkert H, Shek AB, Stroes E, Su TC, Subramaniam T, Susekov A, Vázquez Cárdenas A, Huong Truong T, Tselepis AD, Vohnout B, Wang L, Yamashita S, Al-Sarraf A, Al-Sayed N, Davletov K, Dwiputra B, Gaita D, Kayikcioglu M, Latkovskis G, Marais AD, Thushara Matthias A, Mirrakhimov E, Nordestgaard BG, Petrulioniene Z, Pojskic B, Sadoh W, Tilney M, Tomlinson B, Tybjærg-Hansen A, Viigimaa M, Catapano AL, Freiberger T, Hovingh GK, Mata P, Soran H, Raal F, Watts GF, Schreier L, Bañares V, Greber-Platzer S, Baumgartner-Kaut M, de Gier C, Dieplinger H, Höllerl F, Innerhofer R, Karall D, Lischka J, Ludvik B, Mäser M, Scholl-Bürgi S, Thajer A, Toplak H, Demeure F, Mertens A, Balligand JL, Stephenne X, Sokal E, Petrov I, Goudev A, Nikolov F, Tisheva S, Yotov Y, Tzvetkov I, Hegele RA, Gaudet D, Brunham L, Ruel I, McCrindle B, Cuevas A, Perica D, Symeonides P, Trogkanis E, Kostis A, Ioannou A, Mouzarou A, Georgiou A, Stylianou A, Miltiadous G, Iacovides P, Deltas C, Vrablik M, Urbanova Z, Jesina P, Tichy L, Hyanek J, Dvorakova J, Cepova J, Sykora J, Buresova K, Pipek M, Pistkova E, Bartkova I, S|ulakova A, Toukalkova L, Spenerova M, Maly J, Benn M, Bendary A, Elbahry A, Ferrières J, Ferrieres D, Peretti N, Bruckert E, Gallo A, Valero R, Mourre F, Aouchiche K, Reynaud R, Tounian P, Lemale J, Boccara F, Moulin P, Charrières S, Di Filippo M, Cariou B, Paillard F, Dourmap C, Pradignac A, Verges B, Simoneau I, Farnier M, Cottin Y, Yelnik C, Hankard R, Schiele F, Durlach V, Sultan A, Carrié A, Rabès JP, Sanin V, Schmieder RS, Ates S, Rizos CV, Skoumas I, Tziomalos K, Rallidis L, Kotsis V, Doumas M, Skalidis E, Kolovou G, Kolovou V, Garoufi A, Koutagiar I, Polychronopoulos G, Kiouri E, Antza C, Zacharis E, Attilakos A, Sfikas G, Koumaras C, Anagnostis P, Anastasiou G, Liamis G, Adamidis PS, Milionis H, Lambadiari V, Stabouli S, Filippatos T, Mollaki V, Tsaroumi A, Lamari F, Proyias P, Harangi M, Reddy LL, Shah SAV, Ponde CK, Dalal JJ, Sawhney JP, Verma IC, Hosseini S, Jamialahmadi T, Alareedh M, Shaghee F, Rhadi SH, Abduljalal M, Alfil S, Kareem H, Cohen H, Leitersdorf E, Schurr D, Shpitzen S, Arca M, Averna M, Bertolini S, Calandra S, Tarugi P, Casula M, Galimberti F, Gazzotti M, Olmastroni E, Sarzani R, Ferri C, Repetti E, Giorgino F, Suppressa P, Bossi AC, Borghi C, Muntoni S, Cipollone F, Scicali R, Pujia A, Passaro A, Berteotti M, Pecchioli V, Pisciotta L, Mandraffino G, Pellegatta F, Mombelli G, Branchi A, Fiorenza AM, Pederiva C, Werba JP, Parati G, Nascimbeni F, Iughetti L, Fortunato G, Cavallaro R, Iannuzzo G, Calabrò P, Cefalù AB, Capra ME, Zambon A, Pirro M, Sbrana F, Trenti C, Minicocci I, Federici M, Del Ben M, Buonuomo PS, Moffa S, Pipolo A, Citroni N, Guardamagna O, Lia S, Benso A, Biolo GB, Maroni L, Lupi A, Bonanni L, Rinaldi E, Zenti MG, Masuda D, Mahfouz L, Jambart S, Ayoub C, Ghaleb Y, Kasim NAM, Nor NSM, Al-Khateeb A, Kadir SHSA, Chua YA, Razman AZ, Nazli SA, Ranai NM, Latif AZA, Torres MTM, Mehta R, Martagon AJ, Ramirez GAG, Antonio-Villa NE, Vargas-Vazquez A, Elias-Lopez D, Retana GG, Encinas BR, Macıas JJC, Zazueta AR, Alvarado RM, Portano JDM, Lopez HA, Sauque-Reyna L, Gomez Herrera LG, Simental Mendia LE, Aguilar HG, Cooremans ER, Aparicio BP, Zubieta VM, Gonzalez PAC, Ferreira-Hermosillo A, Portilla NC, Dominguez GJ, Garcia AYR, Arriaga Cazares HE, Gonzalez Gonzalez JR, Mendez Valencia CV, Padilla Padilla FG, Prado RM, De los Rios Ibarra MO, Arjona Villica~na RD, Acevedo Rivera KJ, Carrera RA, Alvarez JA, Amezcua Martinez JC, Barrera Bustillo MDLR, Vargas GC, Chacon RC, Figueroa Andrade MH, Ortega AF, Alcala HG, Garcia de Leon LE, Guzman BG, Gardu~no Garcia JJ, Garnica Cuellar JC, Gomez Cruz JR, Garcia AH, Holguin Almada JR, Herrera UJ, Sobrevilla FL, Rodriguez EM, Sibaja CM, Medrano Rodriguez AB, Morales Oyervides JC, Perez Vazquez DI, Reyes Rodriguez EA, Osorio MLR, Saucedo JR, Tamayo MT, Valdez Talavera LA, Vera Arroyo LE, Zepeda Carrillo EA, Galema-Boers A, Weigman A, Bogsrud MP, Malik M, Shah S, Khan SA, Rana MA, Batool H, Starostecka E, Konopka A, Lewek J, Bielecka-Dąbrowa A, Gach A, Jóźwiak J, Pajkowski M, Romanowska-Kocejko M, Żarczyńska-Buchowiecka M, Hellmann M, Chmara M, Wasąg B, Parczewska A, Gilis-Malinowska N, Borowiec-Wolna J, Stróżyk A, Michalska-Grzonkowska A, Chlebus I, Kleinschmidt M, Wojtecka A, Zdrojewski T, Myśliwiec M, Hennig M, Medeiros AM, Alves AC, Almeida AF, Lopes A, Guerra A, Bilhoto C, Simões F, Silva F, Lobarinhas G, Gama G, Palma I, Salgado JM, Matos LD, Moura MD, Virtuoso MJ, Tavares M, Ferreira P, Pais P, Garcia P, Coelho R, Ribeiro R, Correia S, Sadykova D, Slastnikova E, Alammari D, Mawlawi HA, Alsahari A, Khudary AA, Alrowaily NL, Rajkovic N, Popovic L, Singh S, Rasulic I, Petakov A, Lalic NM, Peng FK, Vasanwala RF, Venkatesh SA, Raslova K, Fabryova L, Nociar J, Šaligova J, Potočňáková L, Kozárová M, Varga T, Kadurova M, Debreova M, Novodvorsky P, Gonova K, Klabnik A, Buganova I, Battelino T, Bizjan BJ, Debeljak M, Kovac J, Mlinaric M, Molk N, Sikonja J, Sustar U, Podkrajsek KT, Muñiz-Grijalvo O, Díaz-Díaz JL, de Andrés R, Fuentes-Jiménez F, Blom D, Miserez EB, Shipton JL, Ganokroj P, Futema M, Ramaswami U, Alieva RB, Fozilov KG, Khoshimov SU, Nizamov UI, Abdullaeva GJ, Kan LE, Abdullaev AA, Zakirova DV, Do DL, Nguyen MNT, Kim NT, Le TT, Le HA, Santos R, Ray KK. Familial hypercholesterolaemia in children and adolescents from 48 countries: a cross-sectional study. Lancet 2024; 403:55-66. [PMID: 38101429 DOI: 10.1016/s0140-6736(23)01842-1] [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] [Received: 03/06/2023] [Revised: 08/21/2023] [Accepted: 08/29/2023] [Indexed: 12/17/2023]
Abstract
BACKGROUND Approximately 450 000 children are born with familial hypercholesterolaemia worldwide every year, yet only 2·1% of adults with familial hypercholesterolaemia were diagnosed before age 18 years via current diagnostic approaches, which are derived from observations in adults. We aimed to characterise children and adolescents with heterozygous familial hypercholesterolaemia (HeFH) and understand current approaches to the identification and management of familial hypercholesterolaemia to inform future public health strategies. METHODS For this cross-sectional study, we assessed children and adolescents younger than 18 years with a clinical or genetic diagnosis of HeFH at the time of entry into the Familial Hypercholesterolaemia Studies Collaboration (FHSC) registry between Oct 1, 2015, and Jan 31, 2021. Data in the registry were collected from 55 regional or national registries in 48 countries. Diagnoses relying on self-reported history of familial hypercholesterolaemia and suspected secondary hypercholesterolaemia were excluded from the registry; people with untreated LDL cholesterol (LDL-C) of at least 13·0 mmol/L were excluded from this study. Data were assessed overall and by WHO region, World Bank country income status, age, diagnostic criteria, and index-case status. The main outcome of this study was to assess current identification and management of children and adolescents with familial hypercholesterolaemia. FINDINGS Of 63 093 individuals in the FHSC registry, 11 848 (18·8%) were children or adolescents younger than 18 years with HeFH and were included in this study; 5756 (50·2%) of 11 476 included individuals were female and 5720 (49·8%) were male. Sex data were missing for 372 (3·1%) of 11 848 individuals. Median age at registry entry was 9·6 years (IQR 5·8-13·2). 10 099 (89·9%) of 11 235 included individuals had a final genetically confirmed diagnosis of familial hypercholesterolaemia and 1136 (10·1%) had a clinical diagnosis. Genetically confirmed diagnosis data or clinical diagnosis data were missing for 613 (5·2%) of 11 848 individuals. Genetic diagnosis was more common in children and adolescents from high-income countries (9427 [92·4%] of 10 202) than in children and adolescents from non-high-income countries (199 [48·0%] of 415). 3414 (31·6%) of 10 804 children or adolescents were index cases. Familial-hypercholesterolaemia-related physical signs, cardiovascular risk factors, and cardiovascular disease were uncommon, but were more common in non-high-income countries. 7557 (72·4%) of 10 428 included children or adolescents were not taking lipid-lowering medication (LLM) and had a median LDL-C of 5·00 mmol/L (IQR 4·05-6·08). Compared with genetic diagnosis, the use of unadapted clinical criteria intended for use in adults and reliant on more extreme phenotypes could result in 50-75% of children and adolescents with familial hypercholesterolaemia not being identified. INTERPRETATION Clinical characteristics observed in adults with familial hypercholesterolaemia are uncommon in children and adolescents with familial hypercholesterolaemia, hence detection in this age group relies on measurement of LDL-C and genetic confirmation. Where genetic testing is unavailable, increased availability and use of LDL-C measurements in the first few years of life could help reduce the current gap between prevalence and detection, enabling increased use of combination LLM to reach recommended LDL-C targets early in life. FUNDING Pfizer, Amgen, Merck Sharp & Dohme, Sanofi-Aventis, Daiichi Sankyo, and Regeneron.
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15
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Humphries SE, Ramaswami U, Hopper N. Should Familial Hypercholesterolaemia Be Included in the UK Newborn Whole Genome Sequencing Programme? Curr Atheroscler Rep 2023; 25:1083-1091. [PMID: 38060059 DOI: 10.1007/s11883-023-01177-0] [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] [Accepted: 11/19/2023] [Indexed: 12/08/2023]
Abstract
PURPOSE OF REVIEW The UK National Health Service (NHS) has recently announced a Newborn Genomes Programme (NGP) to identify infants with treatable inherited disorders using whole genome sequencing (WGS). Here, we address, for familial hypercholesterolaemia (FH), the four principles that must be met for the inclusion of a disorder in the NGP. RECENT FINDINGS Principle A: There is strong evidence that the genetic variants causing FH can be reliably detected. Principle B: A high proportion of individuals who carry an FH-causing variant are likely to develop early heart disease if left undiagnosed and not offered appropriate treatment. Principle C: Early intervention has been shown to lead to substantially improved outcomes in children with FH. Principle D: The recommended interventions are equitably accessible for all. FH meets all the Wilson and Jungner criteria for inclusion in a screening programme, and it also meets all four principles and therefore should be included in the Newborn Genomes Programme.
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Affiliation(s)
- Steve E Humphries
- Centre for Cardiovascular Genetics, Rayne Building, 5 University Street, University College London, London, United Kingdom, WC1E 6JJ
| | - Uma Ramaswami
- Lysosomal Disorders Unit, Royal Free London NHS Foundation Trust, Royal Free Hospital, London, United Kingdom, NW3 2QG.
| | - Neil Hopper
- South Tyneside and Sunderland NHS Foundation Trust, Sunderland Royal Hospital, Sunderland, United Kingdom
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16
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Watts GF, Gidding SS, Hegele RA, Raal FJ, Sturm AC, Jones LK, Sarkies MN, Al-Rasadi K, Blom DJ, Daccord M, de Ferranti SD, Folco E, Libby P, Mata P, Nawawi HM, Ramaswami U, Ray KK, Stefanutti C, Yamashita S, Pang J, Thompson GR, Santos RD. International Atherosclerosis Society guidance for implementing best practice in the care of familial hypercholesterolaemia. Nat Rev Cardiol 2023; 20:845-869. [PMID: 37322181 DOI: 10.1038/s41569-023-00892-0] [Citation(s) in RCA: 51] [Impact Index Per Article: 51.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/12/2023] [Indexed: 06/17/2023]
Abstract
This contemporary, international, evidence-informed guidance aims to achieve the greatest good for the greatest number of people with familial hypercholesterolaemia (FH) across different countries. FH, a family of monogenic defects in the hepatic LDL clearance pathway, is a preventable cause of premature coronary artery disease and death. Worldwide, 35 million people have FH, but most remain undiagnosed or undertreated. Current FH care is guided by a useful and diverse group of evidence-based guidelines, with some primarily directed at cholesterol management and some that are country-specific. However, none of these guidelines provides a comprehensive overview of FH care that includes both the lifelong components of clinical practice and strategies for implementation. Therefore, a group of international experts systematically developed this guidance to compile clinical strategies from existing evidence-based guidelines for the detection (screening, diagnosis, genetic testing and counselling) and management (risk stratification, treatment of adults or children with heterozygous or homozygous FH, therapy during pregnancy and use of apheresis) of patients with FH, update evidence-informed clinical recommendations, and develop and integrate consensus-based implementation strategies at the patient, provider and health-care system levels, with the aim of maximizing the potential benefit for at-risk patients and their families worldwide.
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Affiliation(s)
- Gerald F Watts
- School of Medicine, University of Western Australia, Perth, WA, Australia.
- Departments of Cardiology and Internal Medicine, Royal Perth Hospital, Perth, WA, Australia.
| | | | - Robert A Hegele
- Department of Medicine and Robarts Research Institute, Schulich School of Medicine, Western University, London, ON, Canada
| | - Frederick J Raal
- Department of Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Amy C Sturm
- Department of Genomic Health, Geisinger, Danville, PA, USA
- 23andMe, Sunnyvale, CA, USA
| | - Laney K Jones
- Department of Genomic Health, Geisinger, Danville, PA, USA
| | - Mitchell N Sarkies
- School of Health Sciences, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
| | - Khalid Al-Rasadi
- Medical Research Centre, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman
| | - Dirk J Blom
- Division of Lipidology and Cape Heart Institute, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | | | | | | | - Peter Libby
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Pedro Mata
- Fundación Hipercolesterolemia Familiar, Madrid, Spain
| | - Hapizah M Nawawi
- Institute of Pathology, Laboratory and Forensic Medicine (I-PPerForM) and Faculty of Medicine, Universiti Teknologi MARA, Sungai Buloh, Selangor, Malaysia
- Specialist Lipid and Coronary Risk Prevention Clinics, Hospital Al-Sultan Abdullah (HASA) and Clinical Training Centre, Puncak Alam and Sungai Buloh Campuses, Universiti Teknologi MARA, Sungai Buloh, Selangor, Malaysia
| | - Uma Ramaswami
- Royal Free London NHS Foundation Trust, University College London, London, UK
| | - Kausik K Ray
- Imperial Centre for Cardiovascular Disease Prevention, Imperial College London, London, UK
| | - Claudia Stefanutti
- Department of Molecular Medicine, Extracorporeal Therapeutic Techniques Unit, Lipid Clinic and Atherosclerosis Prevention Centre, Regional Centre for Rare Diseases, Immunohematology and Transfusion Medicine, Umberto I Hospital, 'Sapienza' University of Rome, Rome, Italy
| | - Shizuya Yamashita
- Department of Cardiology, Rinku General Medical Center, Osaka, Japan
| | - Jing Pang
- School of Medicine, University of Western Australia, Perth, WA, Australia
| | | | - Raul D Santos
- Lipid Clinic, Heart Institute (InCor), University of São Paulo, São Paulo, Brazil
- Hospital Israelita Albert Einstein, São Paulo, Brazil
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17
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Gidding SS. Childhood Screening for Familial Hypercholesterolemia: JACC Review Topic of the Week. J Am Coll Cardiol 2023; 82:1558-1563. [PMID: 37793753 DOI: 10.1016/j.jacc.2023.07.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 06/21/2023] [Accepted: 07/17/2023] [Indexed: 10/06/2023]
Abstract
Screening for familial hypercholesterolemia (FH) in childhood remains controversial. Existing guidelines offer practitioners conflicting advice despite generally agreeing on the evidence and areas in which evidence is lacking, including a lack of long-term clinical trials demonstrating coronary event reduction as a result of screening and long-term data on statin side effects. A limitation of existing evidence-based frameworks is reliance on 1 evidence grading system to determine recommendations. However, rigorous evidence evaluation alternatives relevant to FH exist. FH is considered a tier 1 genetic condition, meaning that identification and treatment will improve health outcomes among those affected. Elevated low-density lipoprotein cholesterol, the primary consequence of FH, can be considered causal for atherosclerosis and coronary heart disease. Incorporating these concepts into existing evidence pathways allows the inclusion of surrogate clinical trial outcomes (low-density lipoprotein cholesterol reduction and atherosclerosis regression) and observational data on medication safety, strengthening the evidence for pediatric screening for FH.
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Affiliation(s)
- Samuel S Gidding
- Department of Genomic Health, Geisinger, Danville, Pennsylvania, USA.
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18
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Khoury M. Cascade Screening in Familial Hypercholesterolemia: Achieving Buy-In and Turning Patients Into Partners. CJC PEDIATRIC AND CONGENITAL HEART DISEASE 2023; 2:219-221. [PMID: 37970215 PMCID: PMC10642102 DOI: 10.1016/j.cjcpc.2023.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 06/14/2023] [Indexed: 11/17/2023]
Affiliation(s)
- Michael Khoury
- Department of Pediatrics, University of Alberta, Stollery Children’s Hospital, Edmonton, Alberta, Canada
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19
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Qureshi N, Woods B, Neves de Faria R, Saramago Goncalves P, Cox E, Leonardi Bee J, Condon L, Weng S, Akyea RK, Iyen B, Roderick P, Humphries SE, Rowlands W, Watson M, Haralambos K, Kenny R, Datta D, Miedzybrodzka Z, Byrne C, Kai J. Alternative cascade-testing protocols for identifying and managing patients with familial hypercholesterolaemia: systematic reviews, qualitative study and cost-effectiveness analysis. Health Technol Assess 2023; 27:1-140. [PMID: 37924278 PMCID: PMC10658348 DOI: 10.3310/ctmd0148] [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: 11/06/2023] Open
Abstract
Background Cascade testing the relatives of people with familial hypercholesterolaemia is an efficient approach to identifying familial hypercholesterolaemia. The cascade-testing protocol starts with identifying an index patient with familial hypercholesterolaemia, followed by one of three approaches to contact other relatives: indirect approach, whereby index patients contact their relatives; direct approach, whereby the specialist contacts the relatives; or a combination of both direct and indirect approaches. However, it is unclear which protocol may be most effective. Objectives The objectives were to determine the yield of cases from different cascade-testing protocols, treatment patterns, and short- and long-term outcomes for people with familial hypercholesterolaemia; to evaluate the cost-effectiveness of alternative protocols for familial hypercholesterolaemia cascade testing; and to qualitatively assess the acceptability of different cascade-testing protocols to individuals and families with familial hypercholesterolaemia, and to health-care providers. Design and methods This study comprised systematic reviews and analysis of three data sets: PASS (PASS Software, Rijswijk, the Netherlands) hospital familial hypercholesterolaemia databases, the Clinical Practice Research Datalink (CPRD)-Hospital Episode Statistics (HES) linked primary-secondary care data set, and a specialist familial hypercholesterolaemia register. Cost-effectiveness modelling, incorporating preceding analyses, was undertaken. Acceptability was examined in interviews with patients, relatives and health-care professionals. Result Systematic review of protocols: based on data from 4 of the 24 studies, the combined approach led to a slightly higher yield of relatives tested [40%, 95% confidence interval (CI) 37% to 42%] than the direct (33%, 95% CI 28% to 39%) or indirect approaches alone (34%, 95% CI 30% to 37%). The PASS databases identified that those contacted directly were more likely to complete cascade testing (p < 0.01); the CPRD-HES data set indicated that 70% did not achieve target treatment levels, and demonstrated increased cardiovascular disease risk among these individuals, compared with controls (hazard ratio 9.14, 95% CI 8.55 to 9.76). The specialist familial hypercholesterolaemia register confirmed excessive cardiovascular morbidity (standardised morbidity ratio 7.17, 95% CI 6.79 to 7.56). Cost-effectiveness modelling found a net health gain from diagnosis of -0.27 to 2.51 quality-adjusted life-years at the willingness-to-pay threshold of £15,000 per quality-adjusted life-year gained. The cost-effective protocols cascaded from genetically confirmed index cases by contacting first- and second-degree relatives simultaneously and directly. Interviews found a service-led direct-contact approach was more reliable, but combining direct and indirect approaches, guided by index patients and family relationships, may be more acceptable. Limitations Systematic reviews were not used in the economic analysis, as relevant studies were lacking or of poor quality. As only a proportion of those with primary care-coded familial hypercholesterolaemia are likely to actually have familial hypercholesterolaemia, CPRD analyses are likely to underestimate the true effect. The cost-effectiveness analysis required assumptions related to the long-term cardiovascular disease risk, the effect of treatment on cholesterol and the generalisability of estimates from the data sets. Interview recruitment was limited to white English-speaking participants. Conclusions Based on limited evidence, most cost-effective cascade-testing protocols, diagnosing most relatives, select index cases by genetic testing, with services directly contacting relatives, and contacting second-degree relatives even if first-degree relatives have not been tested. Combined approaches to contact relatives may be more suitable for some families. Future work Establish a long-term familial hypercholesterolaemia cohort, measuring cholesterol levels, treatment and cardiovascular outcomes. Conduct a randomised study comparing different approaches to contact relatives. Study registration This study is registered as PROSPERO CRD42018117445 and CRD42019125775. Funding This project was funded by the National Institute for Health and Care Research (NIHR) Health Technology Assessment programme and will be published in full in Health Technology Assessment; Vol. 27, No. 16. See the NIHR Journals Library website for further project information.
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Affiliation(s)
- Nadeem Qureshi
- PRISM Research Group, Centre for Academic Primary Care, School of Medicine, University of Nottingham, Nottingham, UK
| | - Bethan Woods
- Centre for Health Economics, University of York, York, UK
| | | | | | - Edward Cox
- Centre for Health Economics, University of York, York, UK
| | - Jo Leonardi Bee
- PRISM Research Group, Centre for Academic Primary Care, School of Medicine, University of Nottingham, Nottingham, UK
| | - Laura Condon
- PRISM Research Group, Centre for Academic Primary Care, School of Medicine, University of Nottingham, Nottingham, UK
| | - Stephen Weng
- Cardiovascular and Metabolism, Janssen Research and Development, High Wycombe, UK
| | - Ralph K Akyea
- PRISM Research Group, Centre for Academic Primary Care, School of Medicine, University of Nottingham, Nottingham, UK
| | - Barbara Iyen
- PRISM Research Group, Centre for Academic Primary Care, School of Medicine, University of Nottingham, Nottingham, UK
| | - Paul Roderick
- Primary Care, Population Sciences and Medical Education, University of Southampton, Southampton, UK
| | - Steve E Humphries
- Centre for Cardiovascular Genetics, Institute for Cardiovascular Science, University College London, London, UK
| | | | - Melanie Watson
- Wessex Clinical Genetics Service, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Kate Haralambos
- Familial Hypercholesterolaemia Service, University Hospital of Wales, Cardiff, UK
| | - Ryan Kenny
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Dev Datta
- Lipid Unit, University Hospital Llandough, Penarth, UK
| | | | - Christopher Byrne
- Southampton National Institute for Health and Care Research Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Joe Kai
- PRISM Research Group, Centre for Academic Primary Care, School of Medicine, University of Nottingham, Nottingham, UK
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20
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Lin TK, Dispenza TC. Cholesterol Screening in Children: Is a Universal Approach Working? Curr Atheroscler Rep 2023; 25:579-590. [PMID: 37594601 DOI: 10.1007/s11883-023-01129-8] [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] [Accepted: 07/02/2023] [Indexed: 08/19/2023]
Abstract
PURPOSE OF REVIEW Ample evidence supports that an individual's lifetime risk of atherosclerotic cardiovascular disease correlates to long-term, cumulative exposure to circulating cholesterol levels, beginning in childhood. Selective screening strategies based on family history fail to identify many children with hypercholesterolemia. Universal cholesterol screening in childhood is a worthwhile goal. However, cholesterol screening rates through childhood remain low. RECENT FINDINGS Mounting evidence clarifies the barriers to cholesterol screening in children. Specific strategies to foster universal screening in childhood have been proposed. SUMMARY We present an overview of the present state of childhood cholesterol screening, summarizing historical and contemporary guidelines and collating evidence of low adherence to current guidelines. We contend that novel approaches to universal cholesterol screening in childhood are warranted, and we present potential opportunities for improvement. We call for new and universal pediatric cholesterol screening guidelines.
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Affiliation(s)
- Tracie K Lin
- Penn State Health Children's Hospital, Division of Pediatric Cardiology, 600 University Drive, Hershey, PA, 17033, USA
| | - Thomas C Dispenza
- Penn State Health Children's Hospital, Division of Pediatric Cardiology, 600 University Drive, Hershey, PA, 17033, USA.
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21
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Ray KK, Pillas D, Hadjiphilippou S, Khunti K, Seshasai SRK, Vallejo-Vaz AJ, Neasham D, Addison J. Premature morbidity and mortality associated with potentially undiagnosed familial hypercholesterolemia in the general population. Am J Prev Cardiol 2023; 15:100580. [PMID: 37727649 PMCID: PMC10506055 DOI: 10.1016/j.ajpc.2023.100580] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 08/01/2023] [Accepted: 08/29/2023] [Indexed: 09/21/2023] Open
Abstract
Background Familial hypercholesterolemia (FH) is common, but underdiagnosed, and few systematic early screening programs exist. Objective To assess health outcomes among those with a recorded diagnosis of FH and potential cases of FH with no recorded diagnosis. Methods Retrospective cohort study using the UK Clinical Practice Research Datalink. Records of adults were classified as diagnosed FH (FHCoded), or via accepted algorithms using LDL-C and clinical characteristics as potential FH (FHPotential) or unlikely FH (FHUnlikely) using the DLCN or EUROASPIRE criteria (but no record of FH). Outcomes assessed were premature cardiovascular (CV) events, premature deaths and life expectancy. Results Among 1,729,046 individuals free from CV events, a record of FHCoded before the age of 40 was 0.3/1000 (IQR 0.3-0.4) and increased with age. Where LDL-C levels were available, 1.8/1000 (IQR 1.6-2.0) could be classified as FHPotential. LDL-C was higher for both FHCoded and FHPotential vs FHUnlikely (185.6 and 216.6 vs 116 mg/dL, respectively, p<0.001). Compared to FHUnlikely both FHCoded and FHPotential cohorts had a higher risk of premature cardiovascular events (both p<0.001) with highest rates among FHCoded. Risk of premature deaths did not differ between FHCoded and FHUnlikely, but was 1.88 (95% CI 1.27-2.78, p = 0.002) for FHPotential vs FHCoded and 2.40 (95% CI 1.57-3.67, p<0.001) for FHPotential vs FHUnlikely. At age 18, the FHPotential cohort had a life expectancy 16 years lower than the FHCoded cohort (p<0.001). Conclusions Potential cases of FH had a doubling in risk of premature death and a large reduction in life expectancy compared to individuals with a recorded diagnosis of FH. These findings strengthen the critical importance of identifying potential cases of FH early and early treatment.
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Affiliation(s)
- Kausik K. Ray
- Imperial Centre for Cardiovascular Disease Prevention (ICCP), Dept. of Primary Care and Public Health, School of Public Health, Imperial College London, Charing Cross Campus, The Reynolds Building, St Dunstan's Road, London W6 8RP, United Kingdom
| | | | - Savvas Hadjiphilippou
- Imperial Centre for Cardiovascular Disease Prevention (ICCP), Dept. of Primary Care and Public Health, School of Public Health, Imperial College London, Charing Cross Campus, The Reynolds Building, St Dunstan's Road, London W6 8RP, United Kingdom
| | | | - Sreenivasa Rao Kondapally Seshasai
- Cardiovascular Clinical Academic Group, Molecular and Clinical Sciences Research Institute, St George's, University of London and St George's University Hospitals NHS Foundation Trust, London, United Kingdom
| | - Antonio J. Vallejo-Vaz
- Imperial Centre for Cardiovascular Disease Prevention (ICCP), Dept. of Primary Care and Public Health, School of Public Health, Imperial College London, Charing Cross Campus, The Reynolds Building, St Dunstan's Road, London W6 8RP, United Kingdom
- Department of Medicine, Faculty of Medicine, University of Seville, Seville, Spain
- Clinical Epidemiology and Vascular Risk, Instituto de Biomedicina de Sevilla, IBiS/Hospital Universitario Virgen del Rocío/Universidad de Sevilla/CSIC. Seville, Spain
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22
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Huang H, Leung KSK, Garg T, Mazzoleni A, Miteu GD, Zakariya F, Awuah WA, Yin ETS, Haroon F, Hussain Z, Aji N, Jaiswal V, Tse G. Barriers and shortcomings in access to cardiovascular management and prevention for familial hypercholesterolemia during the COVID-19 pandemic. Clin Cardiol 2023; 46:831-844. [PMID: 37260143 PMCID: PMC10436799 DOI: 10.1002/clc.24059] [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: 02/10/2023] [Revised: 05/04/2023] [Accepted: 05/17/2023] [Indexed: 06/02/2023] Open
Abstract
Familial hypercholesterolemia (FH) is a hereditary condition caused by mutations in the lipid pathway. The goal in managing FH is to reduce circulating low-density lipoprotein cholesterol and, therefore, reduce the risk of developing atherosclerotic cardiovascular disease (ASCVD). Because FH patients were considered high risk groups due to an increased susceptible for contracting COVID-19 infection, we hypothesized whether the effects of the pandemic hindered access to cardiovascular care. In this review, we conducted a literature search in databases Pubmed/Medline and ScienceDirect. We included a comprehensive analysis of findings from articles in English related and summarized the effects of the pandemic on cardiovascular care through direct and indirect effects. During the COVID-19 pandemic, FH patients presented with worse outcomes and prognosis, especially those that have suffered from early ASCVD. This caused avoidance in seeking care due to fear of transmission. The pandemic severely impacted consultations with lipidologists and cardiologists, causing a decline in lipid profile evaluations. Low socioeconomic communities and ethnic minorities were hit the hardest with job displacements and lacked healthcare coverage respectively, leading to treatment nonadherence. Lock-down restrictions promoted sedentary lifestyles and intake of fatty meals, but it is unclear whether these factors attenuated cardiovascular risk in FH. To prevent early atherogenesis in FH patients, universal screening programs, telemedicine, and lifestyle interventions are important recommendations that could improve outcomes in FH patients. However, the need to research in depth on the disproportionate impact within different subgroups should be the forefront of FH research.
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Affiliation(s)
- Helen Huang
- Royal College of Surgeons in IrelandFaculty of Medicine and Health ScienceDublinIreland
| | - Keith S. K. Leung
- Aston University Medical School, Faculty of Health & Life SciencesAston UniversityBirminghamUK
- Epidemiology Research Unit, Cardiovascular Analytics GroupChina‐UK CollaborationHong KongChina
| | - Tulika Garg
- Government Medical College and Hospital ChandigarhChandigarhIndia
| | - Adele Mazzoleni
- Barts and The London School of Medicine and DentistryLondonUK
| | - Goshen D. Miteu
- School of Biosciences, BiotechnologyUniversity of NottinghamNottinghamUK
- Department of BiochemistryCaleb University LagosLagosNigeria
| | - Farida Zakariya
- Department of Pharmaceutical SciencesAhmadu Bello UniversityZariaNigeria
| | | | | | | | - Zarish Hussain
- Royal College of Surgeons in IrelandMedical University of BahrainBusaiteenBahrain
| | - Narjiss Aji
- Faculty of Medicine and Pharmacy of RabatMohammed V UniversityRabatMorocco
| | - Vikash Jaiswal
- Department of Cardiology ResearchLarkin Community HospitalSouth MiamiFloridaUSA
| | - Gary Tse
- Epidemiology Research Unit, Cardiovascular Analytics GroupChina‐UK CollaborationHong KongChina
- Tianjin Key Laboratory of Ionic‐Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of CardiologySecond Hospital of Tianjin Medical UniversityTianjinChina
- Kent and Medway Medical SchoolCanterburyUK
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23
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Lan NSR, Bajaj A, Watts GF, Cuchel M. Recent advances in the management and implementation of care for familial hypercholesterolaemia. Pharmacol Res 2023; 194:106857. [PMID: 37460004 DOI: 10.1016/j.phrs.2023.106857] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 07/07/2023] [Accepted: 07/14/2023] [Indexed: 07/22/2023]
Abstract
Familial hypercholesterolaemia (FH) is a common autosomal semi-dominant and highly penetrant disorder of the low-density lipoprotein (LDL) receptor pathway, characterised by lifelong elevated levels of low-density lipoprotein cholesterol (LDL-C) and increased risk of atherosclerotic cardiovascular disease (ASCVD). However, many patients with FH are not diagnosed and do not attain recommended LDL-C goals despite maximally tolerated doses of potent statin and ezetimibe. Over the past decade, several cholesterol-lowering therapies such as those targeting proprotein convertase subtilisin/kexin type 9 (PCSK9) or angiopoietin-like 3 (ANGPTL3) with monoclonal antibody or ribonucleic acid (RNA) approaches have been developed that promise to close the treatment gap. The availability of new therapies with complementary modes of action of lipid metabolism has enabled many patients with FH to attain guideline-recommended LDL-C goals. Emerging therapies for FH include liver-directed gene transfer of the LDLR, vaccines targeting key proteins involved in cholesterol metabolism, and CRISPR-based gene editing of PCSK9 and ANGPTL3, but further clinical trials are required. In this review, current and emerging treatment strategies for lowering LDL-C, and ASCVD risk-stratification, as well as implementation strategies for the care of patients with FH are reviewed.
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Affiliation(s)
- Nick S R Lan
- Departments of Cardiology and Internal Medicine, Royal Perth Hospital, Perth, Australia; School of Medicine, The University of Western Australia, Perth, Australia.
| | - Archna Bajaj
- Division of Translational Medicine & Human Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Gerald F Watts
- Departments of Cardiology and Internal Medicine, Royal Perth Hospital, Perth, Australia; School of Medicine, The University of Western Australia, Perth, Australia
| | - Marina Cuchel
- Division of Translational Medicine & Human Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
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24
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Guirguis-Blake JM, Evans CV, Coppola EL, Redmond N, Perdue LA. Screening for Lipid Disorders in Children and Adolescents: Updated Evidence Report and Systematic Review for the US Preventive Services Task Force. JAMA 2023; 330:261-274. [PMID: 37462700 DOI: 10.1001/jama.2023.8867] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
Importance Lipid screening in childhood and adolescence can lead to early dyslipidemia diagnosis. The long-term benefits of lipid screening and subsequent treatment in this population are uncertain. Objective To review benefits and harms of screening and treatment of pediatric dyslipidemia due to familial hypercholesterolemia (FH) and multifactorial dyslipidemia. Data Sources MEDLINE and the Cochrane Central Register of Controlled Trials through May 16, 2022; literature surveillance through March 24, 2023. Study Selection English-language randomized clinical trials (RCTs) of lipid screening; recent, large US cohort studies reporting diagnostic yield or screen positivity; and RCTs of lipid-lowering interventions. Data Extraction and Synthesis Single extraction, verified by a second reviewer. Quantitative synthesis using random-effects meta-analysis. Main Outcomes and Measures Health outcomes, diagnostic yield, intermediate outcomes, behavioral outcomes, and harms. Results Forty-three studies were included (n = 491 516). No RCTs directly addressed screening effectiveness and harms. Three US studies (n = 395 465) reported prevalence of phenotypically defined FH of 0.2% to 0.4% (1:250 to 1:500). Five studies (n = 142 257) reported multifactorial dyslipidemia prevalence; the prevalence of elevated total cholesterol level (≥200 mg/dL) was 7.1% to 9.4% and of any lipid abnormality was 19.2%. Ten RCTs in children and adolescents with FH (n = 1230) demonstrated that statins were associated with an 81- to 82-mg/dL greater mean reduction in levels of total cholesterol and LDL-C compared with placebo at up to 2 years. Nonstatin-drug trials showed statistically significant lowering of lipid levels in FH populations, but few studies were available for any single drug. Observational studies suggest that statin treatment for FH starting in childhood or adolescence reduces long-term cardiovascular disease risk. Two multifactorial dyslipidemia behavioral counseling trials (n = 934) demonstrated 3- to 6-mg/dL greater reductions in total cholesterol levels compared with the control group, but findings did not persist at longest follow-up. Harms reported in the short-term drug trials were similar in the intervention and control groups. Conclusions and Relevance No direct evidence on the benefits or harms of pediatric lipid screening was identified. While multifactorial dyslipidemia is common, no evidence was found that treatment is effective for this condition. In contrast, FH is relatively rare; evidence shows that statins reduce lipid levels in children with FH, and observational studies suggest that such treatment has long-term benefit for this condition.
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Affiliation(s)
- Janelle M Guirguis-Blake
- Kaiser Permanente Evidence-based Practice Center, Center for Health Research, Kaiser Permanente, Portland, Oregon
- Department of Family Medicine, University of Washington, Tacoma
| | - Corinne V Evans
- Kaiser Permanente Evidence-based Practice Center, Center for Health Research, Kaiser Permanente, Portland, Oregon
| | - Erin L Coppola
- Kaiser Permanente Evidence-based Practice Center, Center for Health Research, Kaiser Permanente, Portland, Oregon
| | - Nadia Redmond
- Kaiser Permanente Evidence-based Practice Center, Center for Health Research, Kaiser Permanente, Portland, Oregon
| | - Leslie A Perdue
- Kaiser Permanente Evidence-based Practice Center, Center for Health Research, Kaiser Permanente, Portland, Oregon
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25
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Graves LE, Horton A, Alexander IE, Srinivasan S. Gene Therapy for Paediatric Homozygous Familial Hypercholesterolaemia. Heart Lung Circ 2023; 32:769-779. [PMID: 37012174 DOI: 10.1016/j.hlc.2023.01.017] [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] [Received: 07/14/2022] [Revised: 11/26/2022] [Accepted: 01/04/2023] [Indexed: 04/03/2023]
Abstract
The clinical outcome for children and adolescents with homozygous familial hypercholesterolaemia (HoFH) can be devastating, and treatment options are limited in the presence of a null variant. In HoFH, atherosclerotic risk accumulates from birth. Gene therapy is an appealing treatment option as restoration of low-density lipoprotein receptor (LDLR) gene function could provide a cure for HoFH. A clinical trial using a recombinant adeno-associated vector (rAAV) to deliver LDLR DNA to adult patients with HoFH was recently completed; results have not yet been reported. However, this treatment strategy may face challenges when translating to the paediatric population. The paediatric liver undergoes substantial growth which is significant as rAAV vector DNA persists primarily as episomes (extra-chromosomal DNA) and are not replicated during cell division. Therefore, rAAV-based gene addition treatment administered in childhood would likely only have a transient effect. With over 2,000 unique variants in LDLR, a goal of genomic editing-based therapy development would be to treat most (if not all) mutations with a single set of reagents. For a robust, durable effect, LDLR must be repaired in the genome of hepatocytes, which could be achieved using genomic editing technology such as clustered regularly interspaced short palindromic repeats (CRISPR)/Cas9 and a DNA repair strategy such as homology-independent targeted integration. This review discusses this issue in the context of the paediatric patient group with severe compound heterozygous or homozygous null variants which are associated with aggressive early-onset atherosclerosis and myocardial infarction, together with the important pre-clinical studies that use genomic editing strategies to treat HoFH in place of apheresis and liver transplantation.
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Affiliation(s)
- Lara E Graves
- Institute of Endocrinology and Diabetes, The Children's Hospital at Westmead, Sydney, NSW, Australia; Children's Hospital at Westmead Clinical School, University of Sydney, Sydney, NSW, Australia; Gene Therapy Research Unit, Children's Medical Research Institute, Sydney, NSW, Australia.
| | - Ari Horton
- Monash Heart and Monash Children's Hospital, Monash Health, Melbourne, Vic, Australia; Monash Cardiovascular Research Centre, Victorian Heart Institute, Melbourne, Vic, Australia; Monash Genetics, Monash Health, Melbourne, Vic, Australia; Department of Genomic Medicine, The Royal Melbourne Hospital, Parkville, Vic, Australia; Department of Paediatrics, Monash University Clayton, Vic, Australia
| | - Ian E Alexander
- Children's Hospital at Westmead Clinical School, University of Sydney, Sydney, NSW, Australia; Gene Therapy Research Unit, Children's Medical Research Institute, Sydney, NSW, Australia
| | - Shubha Srinivasan
- Institute of Endocrinology and Diabetes, The Children's Hospital at Westmead, Sydney, NSW, Australia; Children's Hospital at Westmead Clinical School, University of Sydney, Sydney, NSW, Australia
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26
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Constantin AT, Streata I, Covăcescu MS, Riza AL, Roșca I, Delia C, Tudor LM, Dorobanțu Ș, Dragoș A, Ristea D, Ioana M, Gherghina I. Genetic Testing for Familial Hypercholesterolemia in a Pediatric Group: A Romanian Showcase. Diagnostics (Basel) 2023; 13:1988. [PMID: 37370883 DOI: 10.3390/diagnostics13121988] [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: 05/16/2023] [Revised: 05/29/2023] [Accepted: 06/04/2023] [Indexed: 06/29/2023] Open
Abstract
Familial hypercholesterolemia (FH) is a genetic disease marked by high levels of LDL-cholesterol. This condition has long-term clinical implications, such as cardiovascular events, that are evident during adult life. Here, we report on a single-center cross-sectional showcase study of genetic testing for FH in a Romanian pediatric group. Genetic testing for FH was performed on 20 Romanian pediatric patients, 10 boys and 10 girls, admitted with LDL-cholesterol levels over 130 mg/mL to the National Institute for Mother and Child Health "Alesssandrescu-Rusescu" in 2020. Genetic testing was performed using the Illumina TruSight Cardio panel. We identified pathogenic/likely pathogenic variants that could explain the phenotype in 5/20 cases. The involved genes were LDLR and APOB. Clinical signs that suggest the diagnosis of FH are scarce for the pediatric patient, although it can be diagnosed early during childhood by lipid panel screening. Prevention could prove lifesaving for some of these patients.
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Affiliation(s)
- Andreea Teodora Constantin
- Pediatrics Department, National Institute for Mother and Child Health "Alessandrescu-Rusescu", 020395 Bucharest, Romania
- Pediatrics Department, Faculty of Medicine, University of Medicine and Pharmacy "Carol Davila", 020021 Bucharest, Romania
| | - Ioana Streata
- Genetics Department, University of Medicine and Pharmacy, 200349 Craiova, Romania
- Regional Center for Medical Genetics Dolj, 200642 Craiova, Romania
| | - Mirela Silvia Covăcescu
- Pediatrics Department, National Institute for Mother and Child Health "Alessandrescu-Rusescu", 020395 Bucharest, Romania
- Pediatrics Department, Faculty of Medicine, University of Medicine and Pharmacy "Carol Davila", 020021 Bucharest, Romania
| | - Anca Lelia Riza
- Genetics Department, University of Medicine and Pharmacy, 200349 Craiova, Romania
- Regional Center for Medical Genetics Dolj, 200642 Craiova, Romania
| | - Ioana Roșca
- Faculty of Midwifery and Nursery, University of Medicine and Pharmacy "Carol Davila", 020021 Bucharest, Romania
- Neonatology Department, Clinical Hospital of Obstetrics and Gynecology "Prof. Dr. P.Sârbu", 060251 Bucharest, Romania
| | - Corina Delia
- Pediatrics Department, National Institute for Mother and Child Health "Alessandrescu-Rusescu", 020395 Bucharest, Romania
- Faculty of Biology, University of Bucharest, 030018 Bucharest, Romania
| | - Lucia Maria Tudor
- Pediatrics Department, National Institute for Mother and Child Health "Alessandrescu-Rusescu", 020395 Bucharest, Romania
- Pediatrics Department, Faculty of Medicine, University of Medicine and Pharmacy "Carol Davila", 020021 Bucharest, Romania
| | - Ștefania Dorobanțu
- Genetics Department, University of Medicine and Pharmacy, 200349 Craiova, Romania
- Regional Center for Medical Genetics Dolj, 200642 Craiova, Romania
| | - Adina Dragoș
- Genetics Department, University of Medicine and Pharmacy, 200349 Craiova, Romania
- Regional Center for Medical Genetics Dolj, 200642 Craiova, Romania
| | - Diana Ristea
- Regional Center for Medical Genetics Dolj, 200642 Craiova, Romania
| | - Mihai Ioana
- Genetics Department, University of Medicine and Pharmacy, 200349 Craiova, Romania
- Regional Center for Medical Genetics Dolj, 200642 Craiova, Romania
| | - Ioan Gherghina
- Pediatrics Department, Faculty of Medicine, University of Medicine and Pharmacy "Carol Davila", 020021 Bucharest, Romania
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27
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Gratton J, Futema M, Humphries SE, Hingorani AD, Finan C, Schmidt AF. A Machine Learning Model to Aid Detection of Familial Hypercholesterolemia. JACC. ADVANCES 2023; 2:100333. [PMID: 38938233 PMCID: PMC11198649 DOI: 10.1016/j.jacadv.2023.100333] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 03/03/2023] [Accepted: 03/17/2023] [Indexed: 06/29/2024]
Abstract
Background People with monogenic familial hypercholesterolemia (FH) are at an increased risk of premature coronary heart disease and death. With a prevalence of 1:250, FH is relatively common; but currently there is no population screening strategy in place and most carriers are identified late in life, delaying timely and cost-effective interventions. Objectives The purpose of this study was to derive an algorithm to identify people with suspected monogenic FH for subsequent confirmatory genomic testing and cascade screening. Methods A least absolute shrinkage and selection operator logistic regression model was used to identify predictors that accurately identified people with FH in 139,779 unrelated participants of the UK Biobank. Candidate predictors included information on medical and family history, anthropometric measures, blood biomarkers, and a low-density lipoprotein cholesterol (LDL-C) polygenic score (PGS). Model derivation and evaluation were performed in independent training and testing data. Results A total of 488 FH variant carriers were identified using whole-exome sequencing of the low-density lipoprotein receptor, apolipoprotein B, apolipoprotein E, proprotein convertase subtilisin/kexin type 9 genes. A 14-variable algorithm for FH was derived, with an area under the curve of 0.77 (95% CI: 0.71-0.83), where the top 5 most important variables included triglyceride, LDL-C, apolipoprotein A1 concentrations, self-reported statin use, and LDL-C PGS. Excluding the PGS as a candidate feature resulted in a 9-variable model with a comparable area under the curve: 0.76 (95% CI: 0.71-0.82). Both multivariable models (w/wo the PGS) outperformed screening-prioritization based on LDL-C adjusted for statin use. Conclusions Detecting individuals with FH can be improved by considering additional predictors. This would reduce the sequencing burden in a 2-stage population screening strategy for FH.
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Affiliation(s)
- Jasmine Gratton
- Institute of Cardiovascular Science, University College London, London, United Kingdom
| | - Marta Futema
- Institute of Cardiovascular Science, University College London, London, United Kingdom
- Cardiology Research Centre, Molecular and Clinical Sciences Research Institute, St George’s University of London, London, United Kingdom
| | - Steve E. Humphries
- Institute of Cardiovascular Science, University College London, London, United Kingdom
| | - Aroon D. Hingorani
- Institute of Cardiovascular Science, University College London, London, United Kingdom
- UCL British Heart Foundation Research Accelerator
- Health Data Research UK, London, United Kingdom
| | - Chris Finan
- Institute of Cardiovascular Science, University College London, London, United Kingdom
- UCL British Heart Foundation Research Accelerator
- Division Heart and Lungs, Department of Cardiology, University Medical Centre Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Amand F. Schmidt
- Institute of Cardiovascular Science, University College London, London, United Kingdom
- UCL British Heart Foundation Research Accelerator
- Division Heart and Lungs, Department of Cardiology, University Medical Centre Utrecht, Utrecht University, Utrecht, the Netherlands
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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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Loh WJ, Watts GF. Detection strategies for elevated lipoprotein(a): will implementation let the genie out of the bottle? Curr Opin Endocrinol Diabetes Obes 2023; 30:94-102. [PMID: 36468313 DOI: 10.1097/med.0000000000000789] [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: 12/12/2022]
Abstract
PURPOSE OF REVIEW Elevated Lp(a) level is an important causal risk factor for atherosclerotic cardiovascular disease (ASCVD), principally coronary artery disease. Selective testing for Lp(a) is highly recommended in patients at intermediate and high risk for ASCVD. Lp(a) levels are predominantly genetically determined, and this has implications for cascade testing. RECENT FINDINGS Recent studies show that cascade testing is effective in identifying elevated Lp(a) in close relatives of probands with high Lp(a). Apart from selective testing and cascade testing as detection strategies, some recent guidelines recommend testing of Lp(a) in all adults at least once in their lifetime and various implementation strategies have been suggested. SUMMARY Hyper-Lp(a) is an important global health problem that can be easily detected. Hyper-Lp(a) meets all the criteria for universal screening except that there is not yet supportive evidence from clinical interventional trials showing a reduction of ASCVD events. The cost-effectiveness of the various detection and implementation strategies need to be further evaluated.
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Affiliation(s)
- Wann Jia Loh
- School of Medicine, University of Western Australia
- Department of Cardiology and Internal Medicine, Royal Perth Hospital, Perth, Western Australia, Australia
- Department of Endocrinology, Changi General Hospital, Changi
- Duke-NUS Medical School, Singapore, Singapore
| | - Gerald F Watts
- School of Medicine, University of Western Australia
- Department of Cardiology and Internal Medicine, Royal Perth Hospital, Perth, Western Australia, Australia
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Medeiros AM, Bourbon M. Genetic Testing in Familial Hypercholesterolemia: Is It for Everyone? Curr Atheroscler Rep 2023; 25:127-132. [PMID: 36862327 PMCID: PMC10027780 DOI: 10.1007/s11883-023-01091-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/02/2023] [Indexed: 03/03/2023]
Abstract
PURPOSE OF REVIEW Lipid measurements and genetic testing are the main diagnostic tools for FH screening that are available in many countries. A lipid profile is widely accessible, and genetic testing, although available worldwide, in some countries is only performed in a research context. Still FH is diagnosed late, showing lack of early screening programs worldwide. RECENT FINDINGS Pediatric screening of FH was recently recognized by the European Commission Public Health Best Practice Portal as one on the best practices in non-communicable disease prevention. The early diagnosis of FH and the lowering of LDL-C values over lifespan can reduce the risk of coronary artery disease and offer health and socioeconomic gains. Current knowledge about FH shows that early detection through appropriate screening needs to become a priority in healthcare systems worldwide. Governmental programs for FH identification should be implemented to unify the diagnosis and increase patient identification.
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Affiliation(s)
- A M Medeiros
- Unidade de I&D, Grupo de Investigação Cardiovascular, Departamento de Promoção da Saúde E Prevenção de Doenças Não Transmissíveis, Instituto Nacional de Saúde Doutor Ricardo Jorge, Lisbon, Portugal
- BioISI - Biosystems & Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal
| | - M Bourbon
- Unidade de I&D, Grupo de Investigação Cardiovascular, Departamento de Promoção da Saúde E Prevenção de Doenças Não Transmissíveis, Instituto Nacional de Saúde Doutor Ricardo Jorge, Lisbon, Portugal.
- BioISI - Biosystems & Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal.
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Sarkies M, Jones LK, Pang J, Sullivan D, Watts GF. How Can Implementation Science Improve the Care of Familial Hypercholesterolaemia? Curr Atheroscler Rep 2023; 25:133-143. [PMID: 36806760 PMCID: PMC10027803 DOI: 10.1007/s11883-023-01090-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/03/2023] [Indexed: 02/23/2023]
Abstract
PURPOSE OF REVIEW Describe the application of implementation science to improve the detection and management of familial hypercholesterolaemia. RECENT FINDINGS Gaps between evidence and practice, such as underutilization of genetic testing, family cascade testing, failure to achieve LDL-cholesterol goals and low levels of knowledge and awareness, have been identified through clinical registry analyses and clinician surveys. Implementation science theories, models and frameworks have been applied to assess barriers and enablers in the literature specific to local contextual factors (e.g. stages of life). The effect of implementation strategies to overcome these factors has been evaluated; for example, automated identification of individuals with FH or training and education to improve statin adherence. Clinical registries were identified as a key infrastructure to monitor, evaluate and sustain improvements in care. The expansion in evidence supporting the care of familial hypercholesterolaemia requires a similar expansion of efforts to translate new knowledge into clinical practice.
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Affiliation(s)
- Mitchell Sarkies
- School of Health Sciences, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, 2006, Australia.
- Centre for Healthcare Resilience and Implementation Science, Australian Institute of Health Innovation, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, Australia.
| | - Laney K Jones
- Department of Genomic Health, Research Institute, Geisinger, Danville, PA, USA
- Heart and Vascular Institute, Geisinger, Danville, PA, USA
| | - Jing Pang
- School of Medicine, University of Western Australia, Perth, WA, Australia
| | - David Sullivan
- Department of Chemical Pathology, Royal Prince Alfred Hospital, Sydney, NSW, Australia
| | - Gerald F Watts
- School of Medicine, University of Western Australia, Perth, WA, Australia
- Lipid Disorders Clinic, Department of Cardiology, Royal Perth Hospital, Perth, WA, Australia
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Aparicio A, Villazón F, Suárez-Gutiérrez L, Gómez J, Martínez-Faedo C, Méndez-Torre E, Avanzas P, Álvarez-Velasco R, Cuesta-Llavona E, García-Lago C, Neuhalfen D, Coto E, Lorca R. Clinical Evaluation of Patients with Genetically Confirmed Familial Hypercholesterolemia. J Clin Med 2023; 12:jcm12031030. [PMID: 36769678 PMCID: PMC9917940 DOI: 10.3390/jcm12031030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 01/19/2023] [Accepted: 01/25/2023] [Indexed: 02/03/2023] Open
Abstract
Familial hypercholesterolemia (FH) is the most common genetic disorder associated with premature atherosclerotic cardiovascular (CV) disease (ASCVD). However, it still is severely underdiagnosed. Initiating lipid-lowering therapy (LLT) in FH patients early in life can substantially reduce their ASCVD risk. As a result, identifying FH is of the utmost importance. The increasing availability of genetic testing may be useful in this regard. We aimed to evaluate the genetic profiles, clinical characteristics, and gender differences between the first consecutive patients referred for genetic testing with FH clinical suspicion in our institution (a Spanish cohort). Clinical information was reviewed, and all participants were sequenced for the main known genes related to FH: LDLR, APOB, PCSK9 (heterozygous FH), LDLRAP1 (autosomal recessive FH), and two other genes related to hyperlipidaemia (APOE and LIPA). The genetic yield was 32%. Their highest recorded LDLc levels were 294 ± 65 SD mg. However, most patients (79%) were under > 1 LLT medication, and their last mean LDLc levels were 135 ± 51 SD. LDLR c.2389+4A>G was one of the most frequent pathogenic/likely pathogenic variants and its carriers had significantly worse LDLc highest recorded levels (348 ± 61 SD vs. 282 ± 60 SD mg/dL, p = 0.002). Moreover, we identified an homozygous carrier of the pathogenic variant LDLRAP1 c.207delC (autosomal recessive FH). Both clinical and genetic hypercholesterolemia diagnosis was significantly established earlier in men than in women (25 years old ± 15 SD vs. 35 years old ± 19 SD, p = 0.02; and 43 ± 17 SD vs. 54 ± 19 SD, p = 0.02, respectively). Other important CV risk factors were found in 44% of the cohort. The prevalence of family history of premature ASCVD was high, whereas personal history was exceptional. Our finding reaffirms the importance of early detection of FH to initiate primary prevention strategies from a young age. Genetic testing can be very useful. As it enables familial cascade genetic testing, early prevention strategies can be extended to all available relatives at concealed high CV risk.
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Affiliation(s)
- Andrea Aparicio
- Área del Corazón, Hospital Universitario Central Asturias (HUCA), 33011 Oviedo, Spain
| | - Francisco Villazón
- Servicio de Endocrinología y Nutrición, Hospital Universitario Central Asturias (HUCA), 33011 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
| | - Lorena Suárez-Gutiérrez
- Servicio de Endocrinología y Nutrición, Hospital Universitario Central Asturias (HUCA), 33011 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
| | - Juan Gómez
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
- Departamento de Genética Molecular, Hospital Universitario Central Asturias (HUCA), 33011 Oviedo, Spain
- Redes de Investigación Cooperativa Orientadas a Resultados en Salud (RICORs), 28029 Madrid, Spain
- Unidad de Cardiopatías Familiares, Hospital Universitario Central Asturias (HUCA), 33011 Oviedo, Spain
- CIBER-Enfermedades Respiratorias, 28029 Madrid, Spain
| | - Ceferino Martínez-Faedo
- Servicio de Endocrinología y Nutrición, Hospital Universitario Central Asturias (HUCA), 33011 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
| | - Edelmiro Méndez-Torre
- Servicio de Endocrinología y Nutrición, Hospital Universitario Central Asturias (HUCA), 33011 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
| | - Pablo Avanzas
- Área del Corazón, Hospital Universitario Central Asturias (HUCA), 33011 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
- Medicine Department, Universidad de Oviedo, 33003 Oviedo, Spain
| | - Rut Álvarez-Velasco
- Área del Corazón, Hospital Universitario Central Asturias (HUCA), 33011 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
| | - Elías Cuesta-Llavona
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
- Departamento de Genética Molecular, Hospital Universitario Central Asturias (HUCA), 33011 Oviedo, Spain
- Redes de Investigación Cooperativa Orientadas a Resultados en Salud (RICORs), 28029 Madrid, Spain
- Unidad de Cardiopatías Familiares, Hospital Universitario Central Asturias (HUCA), 33011 Oviedo, Spain
- CIBER-Enfermedades Respiratorias, 28029 Madrid, Spain
| | - Claudia García-Lago
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
- Departamento de Genética Molecular, Hospital Universitario Central Asturias (HUCA), 33011 Oviedo, Spain
| | - David Neuhalfen
- Medicine Department, Universidad de Oviedo, 33003 Oviedo, Spain
| | - Eliecer Coto
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
- Departamento de Genética Molecular, Hospital Universitario Central Asturias (HUCA), 33011 Oviedo, Spain
- Redes de Investigación Cooperativa Orientadas a Resultados en Salud (RICORs), 28029 Madrid, Spain
- Unidad de Cardiopatías Familiares, Hospital Universitario Central Asturias (HUCA), 33011 Oviedo, Spain
- CIBER-Enfermedades Respiratorias, 28029 Madrid, Spain
- Medicine Department, Universidad de Oviedo, 33003 Oviedo, Spain
| | - Rebeca Lorca
- Área del Corazón, Hospital Universitario Central Asturias (HUCA), 33011 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
- Unidad de Cardiopatías Familiares, Hospital Universitario Central Asturias (HUCA), 33011 Oviedo, Spain
- CIBER-Enfermedades Respiratorias, 28029 Madrid, Spain
- Medicine Department, Universidad de Oviedo, 33003 Oviedo, Spain
- Departamento de Morfología y Biología Celular, Universidad de Oviedo, 33003 Oviedo, Spain
- Correspondence:
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Nikitina MI, Santalova GV. Hyperlipidemia in children: Unsolved problems. ROSSIYSKIY VESTNIK PERINATOLOGII I PEDIATRII (RUSSIAN BULLETIN OF PERINATOLOGY AND PEDIATRICS) 2023. [DOI: 10.21508/1027-4065-2022-67-6-40-45] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The article presents literature review findings on the prevalence, diagnosis, and treatment of hyperlipidemia, including familial hypercholesterolemia in children. It is noted that the number of patients with hyperlipidemia continues to grow throughout the world. As before, hyperlipidemias are considered risk factors for the development of cardiovascular diseases and the cause of high mortality in different countries of the world. Attention is drawn to the possibility of atherosclerotic lesions of the heart vessels in young people and adolescents. Diseases in children (diabetes mellitus, obesity, hypothyroidism, renal pathology, etc.) have been noted, which necessitate diagnosing hyperlipidemia. There are no clear guidelines for pediatricians regarding cholesterol screening and timing of therapy initiation.
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Paetow U, Kordonouri O, Schwab KO. [Advantages of Universal Early Childhood Screening for Familial Hypercholesterolaemia in Germany]. KLINISCHE PADIATRIE 2023; 235:5-12. [PMID: 35240713 DOI: 10.1055/a-1721-2611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Zusammenfassung
Hintergrund Kardiovaskuläre Ereignisse sind die wichtigste
Mortalitätsursache in der westlichen Welt. Die familiäre
Hypercholesterinämie (FH) zeichnet sich durch erhöhte
low-density Lipoprotein-Cholesterin- und Gesamtcholesterin-Spiegel im peripheren
Blut aus. Die FH beruht zumeist auf einer genetischen Veränderung im
LDL-Rezeptorgen und gehört zu den häufigsten monogenen
Erkrankungen. Bei der homozygoten Form ist die Mortalität aufgrund
kardiovaskulärer Ereignisse im Kindes- und Jugendalter extrem hoch. Auch
die heterozygote Form der FH führt unbehandelt früh zu
kardiovaskulären Ereignissen und sollte frühzeitig
diagnostiziert und behandelt werden, um eine Atherosklerose zu vermeiden. Die
präventive und sichere Anwendung einer medikamentösen
Lipidsenkung konnte für Kinder gezeigt werden.
Methode Literatursuche in Cochrane library, Medline, NCBI databases.
Ergebnisse Anders als in europäischen Nachbarländern wurde
in Deutschland im Kindesalter kein universelles Screening auf diese
häufige Erkrankung etabliert, obwohl dies in den Leitlinien gefordert
wird. In der vorliegenden Arbeit wird die Literatur untersucht hinsichtlich der
Kausalität der Erkrankung, der Therapie im Kindesalter sowie
hinsichtlich des Zutreffens klassischer und modifizierter Kriterien für
das Durchführen eines vorgeschlagenen universellen FH-Screenings zum 5.
Geburtstag mit anschließendem reversen Kaskadenscreening bei
Verwandten.
Schlussfolgerung Die Autoren plädieren für die
Einführung eines universellen FH-Screenings in Deutschland zur
Vorsorgeuntersuchung U9 mit 5 Jahren. Eine Analyse anhand des Goldstandards
klassischer Kriterien nach Wilson und Jungner sowie anhand im zeitlichen Kontext
angepasster Kriterien zeigt die Vorteile eines universellen
frühkindlichen FH-Screening. Dieses kann präventiv das
kardiovaskuläre Risiko absenken, das Fortschreiten der Atherosklerose
verlangsamen und zu niedrigeren Inzidenzen von Schlaganfall und Herzinfarkt im
Erwachsenenalter beitragen. Neben den diagnostizierten FH-Kindern können
auch deren betroffene Verwandte erkannt werden.
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Affiliation(s)
- Ulrich Paetow
- Pädiatrische Endokrinologie/Diabetologie und Lipidologie, Klinikum und Fachbereich Medizin Johann Wolfgang Goethe-Universität Frankfurt Zentrum für Kinder- und Jugendmedizin Klinik I, Frankfurt am Main, Germany
| | - Olga Kordonouri
- Allgemeinpädiatrie, Diabetologie/Endokrinologie, Gastroenterologie und Klinische Forschung, Kinder- und Jugendkrankenhaus AUF DER BULT, Hannover, Germany
| | - Karl Otfried Schwab
- Zentrum für Kinder- und Jugendmedizin, Pädiatrische Endokrinologie, Diabetologie, Lipidologie und klinische Forschung, Universitätsklinikum Freiburg im Breisgau, Germany
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Becker M, Adamski A, Fandel F, Vaillant M, Wagner K, Droste DW, Ziade B, Hein S, Mendon P, Bocquet V, de Beaufort C. Screening for familial hypercholesterolaemia in primary school children: protocol for a cross-sectional, feasibility study in Luxembourg city (EARLIE). BMJ Open 2022; 12:e066067. [PMID: 36600332 PMCID: PMC9743380 DOI: 10.1136/bmjopen-2022-066067] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 12/13/2022] Open
Abstract
INTRODUCTION Familial hypercholesterolaemia (FH) is a frequent (1:300) autosomal dominantly inherited condition which causes premature (women <60 years, men <55 years) cardio-cerebrovascular disease (CVD). Early detection and initiation of treatment can prevent the development of CVD and premature death. Our pilot study aims to investigate the prevalence of FH, the feasibility and efficacy of a screening based on a capillary blood test performed during a school medicine visit in primary school children. METHODS AND ANALYSIS In this cross-sectional study, all children (n=3200) between 7 and 12 years, attending primary school in the city of Luxembourg and invited for their mandatory medical school examinations between 2021 and 2023 are invited to participate. A study nurse performs a capillary blood test to analyse the lipid profile. Families receive the result including an interpretation and invitation to seek medical advice if indicated. If FH is confirmed, a reverse cascade screening in that family will be proposed. The child will receive standard care. Primary outcome is the occurrence of confirmed FH in the study population. Secondary outcomes include the percentage of children screened, percentage of children with abnormal lipid values, percentage of families screened and percentage of families with additionally identified members suffering from hypercholesterolaemia. A health economic analysis will be performed. ETHICS AND DISSEMINATION Ethics approval (reference number 202108/01) has been obtained from the National Research Ethics Committee (CNER (Luxembourg)) and was authorised by the ministry of health in Luxembourg. Families receive written information with an informed consent form. Participation requires an informed consent form signed by the parents. The results will be disseminated in peer-reviewed publications, conference presentations and by public media to the general public. TRIAL REGISTRATION NUMBER NCT05271305.
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Affiliation(s)
- Marianne Becker
- Pediatric Endocrinology and Diabetology (DECCP), Centre Hospitalier de Luxembourg, Luxembourg, Luxembourg
- Research Group GRON, VUB University, Brussels, Belgium
| | - Aurélie Adamski
- Pediatric Endocrinology and Diabetology (DECCP), Centre Hospitalier de Luxembourg, Luxembourg, Luxembourg
| | - Françoise Fandel
- Department of School Medicine of the City of Luxembourg, Luxembourg, Luxembourg
| | - Michel Vaillant
- Competence Center for Methodology and Statistics, Luxembourg Institute of Health, Strassen, Luxembourg
| | - Kerstin Wagner
- Department of Paediatric Cardiology, Centre Hospitalier de Luxembourg, Luxembourg, Luxembourg
| | - Dirk Wolfgang Droste
- Department of Neurology, Centre Hospitalier de Luxembourg, Luxembourg, Luxembourg
| | - Bechara Ziade
- Direction, Luxembourg Ministry of Health, Luxembourg, Luxembourg
| | - Steve Hein
- Department of Sports Medicine, Centre Hospitalier de Luxembourg, Luxembourg, Luxembourg
| | - Priyanka Mendon
- Competence Center for Methodology and Statistics, Luxembourg Institute of Health, Strassen, Luxembourg
| | - Valéry Bocquet
- Competence Center for Methodology and Statistics, Luxembourg Institute of Health, Strassen, Luxembourg
| | - Carine de Beaufort
- Pediatric Endocrinology and Diabetology (DECCP), Centre Hospitalier de Luxembourg, Luxembourg, Luxembourg
- Faculty of Science, Technology and Medicine, University of Luxembourg-Belval Campus, Esch-sur-Alzette, Luxembourg
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Genetic Spectrum of Familial Hypercholesterolaemia in the Malaysian Community: Identification of Pathogenic Gene Variants Using Targeted Next-Generation Sequencing. Int J Mol Sci 2022; 23:ijms232314971. [PMID: 36499307 PMCID: PMC9736953 DOI: 10.3390/ijms232314971] [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: 09/28/2022] [Revised: 11/11/2022] [Accepted: 11/17/2022] [Indexed: 12/02/2022] Open
Abstract
Familial hypercholesterolaemia (FH) is caused by mutations in lipid metabolism genes, predominantly in low-density lipoprotein receptor (LDLR), apolipoprotein B (APOB), proprotein convertase subtilisin/kexin-type 9 (PCSK9) and LDL receptor adaptor protein 1 (LDLRAP1). The prevalence of genetically confirmed FH and the detection rate of pathogenic variants (PV) amongst clinically diagnosed patients is not well established. Targeted next-generation sequencing of LDLR, APOB, PCSK9 and LDLRAP1 was performed on 372 clinically diagnosed Malaysian FH subjects. Out of 361 variants identified, 40 of them were PV (18 = LDLR, 15 = APOB, 5 = PCSK9 and 2 = LDLRAP1). The majority of the PV were LDLR and APOB, where the frequency of both PV were almost similar. About 39% of clinically diagnosed FH have PV in PCSK9 alone and two novel variants of PCSK9 were identified in this study, which have not been described in Malaysia and globally. The prevalence of genetically confirmed potential FH in the community was 1:427, with a detection rate of PV at 0.2% (12/5130). About one-fourth of clinically diagnosed FH in the Malaysian community can be genetically confirmed. The detection rate of genetic confirmation is similar between potential and possible FH groups, suggesting a need for genetic confirmation in index cases from both groups. Clinical and genetic confirmation of FH index cases in the community may enhance the early detection of affected family members through family cascade screening.
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Schipper HS, de Ferranti S. Atherosclerotic Cardiovascular Risk as an Emerging Priority in Pediatrics. Pediatrics 2022; 150:189711. [PMID: 36217888 DOI: 10.1542/peds.2022-057956] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/29/2022] [Indexed: 12/05/2022] Open
Abstract
Over the last decades, childhood and adolescence have emerged as an important window of opportunity to prevent atherosclerotic cardiovascular disease (ASCVD) later in life. Here, we discuss the underlying advances in the field. First, atherosclerosis development starts as early as childhood. Atherogenesis initiates in the iliac arteries and abdominal aorta and subsequently develops in higher regions of the arterial tree, as has been demonstrated in nonhuman primate studies and human autopsy studies. Obesity, hypertension, hyperlipidemia, and hyperglycemia at a young age can accelerate atherogenesis. Children and adolescents with obesity have a relative risk of ∼ 2.5 for ASCVD mortality later in life, compared to peers with a normal weight. Conversely, early prevention improves long-term cardiovascular outcomes. Second, we review disease-associated factors that add to the traditional risk factors. Various pediatric disorders carry similar or even higher risks of ASCVD than obesity, including chronic inflammatory disorders, organ transplant recipients, familial hypercholesterolemia, endocrine disorders, childhood cancer survivors, chronic kidney diseases, congenital heart diseases, and premature birth, especially after fetal growth restriction. The involved disease-associated factors that fuel atherogenesis are diverse and include inflammation, vascular, and endothelial factors. The diverse and growing list of pediatric groups at risk underscores that cardiovascular risk management has solidly entered the realm of general pediatrics. In a second review in this series, we will, therefore, focus on recent advances in cardiovascular risk assessment and management and their implications for pediatric practice.
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Affiliation(s)
- Henk S Schipper
- Department of Pediatric Cardiology.,Center for Translational Immunology, Wilhelmina Children's Hospital and University Medical Center Utrecht, Utrecht, The Netherlands
| | - Sarah de Ferranti
- Department of Cardiology, Boston Children's Hospital and Harvard University Medical School, Boston, Massachusetts
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Mighton C, Shickh S, Aguda V, Krishnapillai S, Adi-Wauran E, Bombard Y. From the patient to the population: Use of genomics for population screening. Front Genet 2022; 13:893832. [PMID: 36353115 PMCID: PMC9637971 DOI: 10.3389/fgene.2022.893832] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 09/26/2022] [Indexed: 10/22/2023] Open
Abstract
Genomic medicine is expanding from a focus on diagnosis at the patient level to prevention at the population level given the ongoing under-ascertainment of high-risk and actionable genetic conditions using current strategies, particularly hereditary breast and ovarian cancer (HBOC), Lynch Syndrome (LS) and familial hypercholesterolemia (FH). The availability of large-scale next-generation sequencing strategies and preventive options for these conditions makes it increasingly feasible to screen pre-symptomatic individuals through public health-based approaches, rather than restricting testing to high-risk groups. This raises anew, and with urgency, questions about the limits of screening as well as the moral authority and capacity to screen for genetic conditions at a population level. We aimed to answer some of these critical questions by using the WHO Wilson and Jungner criteria to guide a synthesis of current evidence on population genomic screening for HBOC, LS, and FH.
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Affiliation(s)
- Chloe Mighton
- Genomics Health Services Research Program, St. Michael’s Hospital, Unity Health Toronto, Toronto, ON, Canada
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada
| | - Salma Shickh
- Genomics Health Services Research Program, St. Michael’s Hospital, Unity Health Toronto, Toronto, ON, Canada
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada
| | - Vernie Aguda
- Genomics Health Services Research Program, St. Michael’s Hospital, Unity Health Toronto, Toronto, ON, Canada
- Centre for Medical Education, School of Medicine, Cardiff University, Cardiff, United Kingdom
| | - Suvetha Krishnapillai
- Genomics Health Services Research Program, St. Michael’s Hospital, Unity Health Toronto, Toronto, ON, Canada
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada
| | - Ella Adi-Wauran
- Genomics Health Services Research Program, St. Michael’s Hospital, Unity Health Toronto, Toronto, ON, Canada
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada
| | - Yvonne Bombard
- Genomics Health Services Research Program, St. Michael’s Hospital, Unity Health Toronto, Toronto, ON, Canada
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada
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Abstract
Background: Atherosclerotic cardiovascular diseases (ASCVD) including myocardial infarction, stroke and peripheral arterial disease continue to be major causes of premature death, disability and healthcare expenditure globally. Preventing the accumulation of cholesterol-containing atherogenic lipoproteins in the vessel wall is central to any healthcare strategy to prevent ASCVD. Advances in current concepts about reducing cumulative exposure to apolipoprotein B (apo B) cholesterol-containing lipoproteins and the emergence of novel therapies provide new opportunities to better prevent ASCVD. The present update of the World Heart Federation Cholesterol Roadmap provides a conceptual framework for the development of national policies and health systems approaches, so that potential roadblocks to cholesterol management and thus ASCVD prevention can be overcome. Methods: Through a review of published guidelines and research papers since 2017, and consultation with a committee composed of experts in clinical management of dyslipidaemias and health systems research in low-and-middle income countries (LMICs), this Roadmap identifies (1) key principles to effective ASCVD prevention (2) gaps in implementation of these interventions (knowledge-practice gaps); (3) health system roadblocks to treatment of elevated cholesterol in LMICs; and (4) potential strategies for overcoming these. Results: Reducing the future burden of ASCVD will require diverse approaches throughout the life-course. These include: a greater focus on primordial prevention; availability of affordable cholesterol testing; availability of universal cholesterol screening for inherited dyslipidaemias; risk stratification moving beyond 10-year risk to look at lifetime risk with adequate risk estimators; wider availability of affordable cholesterol-lowering therapies which should include statins as essential medications globally; use of adequate doses of potent statin regimens; and combination therapies with ezetimibe or other therapies in order to attain and maintain robust reductions in LDL-C in those at highest risk. Continuing efforts are needed on health literacy for both the public and healthcare providers, utilising multi-disciplinary teams in healthcare and applications that quantify both ASCVD risk and benefits of treatment as well as increased adherence to therapies. Conclusions: The adverse effects of LDL-cholesterol and apo B containing lipoprotein exposure are cumulative and result in ASCVD. These are preventable by implementation of different strategies, aimed at efficiently tackling atherosclerosis at different stages throughout the human life-course. Preventive strategies should therefore be updated to implement health policy, lifestyle changes and when needed pharmacotherapies earlier with investment in, and a shift in focus towards, early preventive strategies that preserve cardiovascular health rather than treat the consequences of ASCVD.
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Wilson DP. Improving Cholesterol Screening in Children-Is Educating Primary Care Providers Enough? J Pediatr 2022; 249:92-96. [PMID: 35709956 DOI: 10.1016/j.jpeds.2022.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 05/25/2021] [Accepted: 06/08/2021] [Indexed: 11/30/2022]
Affiliation(s)
- Don P Wilson
- Department of Pediatric Endocrinology and Diabetes, Cook Children's Medical Center, Fort Worth, TX.
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Khoury M, Bigras JL, Cummings EA, Harris KC, Hegele RA, Henderson M, Morrison KM, St-Pierre J, Wong PD, McCrindle BW. The Detection, Evaluation, and Management of Dyslipidemia in Children and Adolescents: A Canadian Cardiovascular Society/Canadian Pediatric Cardiology Association Clinical Practice Update. Can J Cardiol 2022; 38:1168-1179. [PMID: 35961755 DOI: 10.1016/j.cjca.2022.05.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 05/02/2022] [Accepted: 05/05/2022] [Indexed: 12/20/2022] Open
Abstract
Atherosclerosis begins in youth and is directly linked with the presence and severity of cardiovascular risk factors, including dyslipidemia. Thus, the timely identification and management of dyslipidemia in childhood might slow atherosclerotic progression and decrease the risk of cardiovascular disease in adulthood. This is particularly true for children with genetic disorders resulting in marked dyslipidemia, including familial hypercholesterolemia, which remains frequently undiagnosed. Universal and cascade screening strategies can effectively identify cases of pediatric dyslipidemia. In the clinical evaluation of children with dyslipidemia, evaluating for secondary causes of dyslipidemia, including medications and systemic disorders is essential. The first line therapy generally centres around lifestyle modifications, with dietary changes specific to the dyslipidemia phenotype. Indications for medication depend on the severity of dyslipidemia and an individualized assessment of cardiovascular risk. Despite an expanding evidence base supporting the detection and timely management of pediatric dyslipidemia, numerous knowledge gaps remain, including a sufficient evidence base to support more widespread screening, thresholds for initiation of pharmacotherapy, and treatment targets. Further studies on the most appropriate age for statin initiation and long-term safety studies of statin use in youth are also required. The most pressing matter, however, is the development of knowledge translation strategies to improve the screening and detection of lipid disorders in Canadian youth.
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Affiliation(s)
- Michael Khoury
- Division of Pediatric Cardiology, Department of Pediatrics Stollery Children's Hospital, University of Alberta, Edmonton, Alberta, Canada.
| | - Jean-Luc Bigras
- Division of Pediatric Cardiology, Department of Pediatrics, University of Montreal, Montreal, Quebec, Canada
| | - Elizabeth A Cummings
- Division of Pediatric Endocrinology, Department of Pediatrics, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Kevin C Harris
- Children's Heart Centre, BC Children's Hospital and University of British Columbia, Vancouver, British Columbia, Canada
| | - Robert A Hegele
- Department of Medicine, Schulich School of Medicine and Dentistry, London, Ontario, Canada
| | - Mélanie Henderson
- Department of Pediatrics, Université de Montréal, Montreal, Quebec, Canada; Centre de Recherche CHU Sainte-Justine, Montreal, Quebec, Canada; School of Public Health, Department of Social and Preventive Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Katherine M Morrison
- Centre for Metabolism, Obesity and Diabetes Research, Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada
| | - Julie St-Pierre
- Department of Pediatrics, McGill University, Montreal, Quebec, Canada
| | - Peter D Wong
- Division of Pediatric Medicine, Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada; Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Brian W McCrindle
- Labatt Family Heart Centre, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
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Horton AE, Martin AC, Srinivasan S, Justo RN, Poplawski NK, Sullivan D, Brett T, Chow CK, Nicholls SJ, Pang J, Watts GF. Integrated guidance to enhance the care of children and adolescents with familial hypercholesterolaemia: Practical advice for the community clinician. J Paediatr Child Health 2022; 58:1297-1312. [PMID: 35837752 PMCID: PMC9545564 DOI: 10.1111/jpc.16096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Revised: 05/17/2022] [Accepted: 05/28/2022] [Indexed: 11/28/2022]
Abstract
Familial hypercholesterolaemia (FH) is a highly penetrant monogenic disorder present from birth that markedly elevates plasma low-density lipoprotein (LDL)-cholesterol (LDL-C) concentration and, if untreated, leads to premature atherosclerosis and coronary artery disease (CAD). At a prevalence of 1:250 individuals, with over 90% undiagnosed, recent estimates suggest that there are approximately 22 000 children and adolescents with FH in Australia and New Zealand. However, the overwhelming majority remain undetected and inadequately treated until adulthood or after their first cardiac event. The guidance in this paper aims to increase awareness about paediatric FH and provide practical advice for the diagnosis and management of FH in children and adolescents. Recommendations are given on the detection, diagnosis, assessment and management of FH in children and adolescents. Recommendations are also made on genetic testing, including counselling and the potential for universal screening programmes. Practical guidance on management includes treatment of non-cholesterol risk factors, and safe and appropriate use of LDL-C lowering therapies, including statins, ezetimibe, PCSK9 inhibitors and lipoprotein apheresis. Models of care for FH need to be adapted to local and regional health care needs and available resources. Targeting the detection of FH as a priority in children and young adults has the potential to alter the natural history of atherosclerotic cardiovascular disease and recognise the promise of early detection for improving long-term health outcomes. A comprehensive implementation strategy, informed by further research, including assessments of cost-benefit, will be required to ensure that this new guidance benefits all families with or at risk of FH.
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Affiliation(s)
- Ari E Horton
- Monash Heart and Monash Children's Hospital, Monash Health, Melbourne, Victoria, Australia
- Monash Cardiovascular Research Centre, Victorian Heart Institute, Monash University, Melbourne, Victoria, Australia
- Department of Paediatrics, Monash University, Melbourne, Victoria, Australia
| | - Andrew C Martin
- Department General Paediatrics, Perth Children's Hospital, Perth, Western Australia, Australia
- Division of Paediatrics, Faculty of Health and Medical Sciences, University of Western Australia, Perth, Western Australia, Australia
| | - Shubha Srinivasan
- Institute of Endocrinology and Diabetes, The Children's Hospital at Westmead, Sydney, New South Wales, Australia
- Discipline of Child and Adolescent Health, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
| | - Robert N Justo
- Department of Paediatric Cardiology, Queensland Children's Hospital, Brisbane, Queensland, Australia
- School of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Nicola K Poplawski
- Adult Genetics Unit, Royal Adelaide Hospital, Adelaide, South Australia, Australia
- Adelaide Medical School, University of Adelaide, Adelaide, South Australia, Australia
| | - David Sullivan
- Department of Chemical Pathology, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
- Sydney Medical School, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
| | - Tom Brett
- General Practice and Primary Health Care Research, School of Medicine, University of Notre Dame Australia, Fremantle, Western Australia, Australia
| | - Clara K Chow
- Westmead Applied Research Centre, The University of Sydney, Sydney, New South Wales, Australia
- Department of Cardiology, Westmead Hospital, Sydney, New South Wales, Australia
- Cardiovascular Division, George Institute for Global Health, Sydney, New South Wales, Australia
| | - Stephen J Nicholls
- Monash Heart and Monash Children's Hospital, Monash Health, Melbourne, Victoria, Australia
- Monash Cardiovascular Research Centre, Victorian Heart Institute, Monash University, Melbourne, Victoria, Australia
| | - Jing Pang
- School of Medicine, Faculty of Health and Medical Sciences, University of Western Australia, Perth, Western Australia, Australia
| | - Gerald F Watts
- School of Medicine, Faculty of Health and Medical Sciences, University of Western Australia, Perth, Western Australia, Australia
- Lipid Disorders Clinic, Cardiometabolic Service, Department of Cardiology, Royal Perth Hospital, Perth, Western Australia, Australia
- Lipid Disorders Clinic, Cardiometabolic Service, Department of Internal Medicine, Royal Perth Hospital, Perth, Western Australia, Australia
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43
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Universal screening for familial hypercholesterolemia in 2 populations. Genet Med 2022; 24:2103-2111. [PMID: 35913489 DOI: 10.1016/j.gim.2022.06.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 06/24/2022] [Accepted: 06/24/2022] [Indexed: 10/16/2022] Open
Abstract
PURPOSE In Europe, >2 million individuals with familial hypercholesterolemia (FH) are currently undiagnosed. Effective screening strategies for FH diagnosis in childhood are urgently needed. We assessed the overall performances of 2 different FH screening programs in children: universal screening program with opt-out and opt-in type participation. METHODS We analyzed the data from 2 independent populations based on >166,000 individuals screened for hypercholesterolemia. Genetic analyses of FH-related genes were finalized in 945 children and 99 parents. RESULTS A total of 305 (32.3%) children were genotyped as positive or with a variant of uncertain significance in FH-related genes. For low-density lipoprotein cholesterol levels of 3.5 mmol L (135.3 mg/dL), the overall sensitivity and specificity for confirming FH were 90.5% and 55.3%, respectively. As part of child-parent screening, in >90% of the families, the parent with reported higher cholesterol levels was positive for the familial genetic variant. The cohort-based prevalence of FH from the opt-out universal screening program was estimated to be 1 in 431 individuals (95% CI = 1/391-1/472). CONCLUSION Universal 3-step FH screening approach in children enabled detection of most children and their parents in every generation screened at reasonable costs. Opt-out screening strategy might be preferable over opt-in screening strategy.
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Diboun I, Al-Sarraj Y, Toor SM, Mohammed S, Qureshi N, Al Hail MSH, Jayyousi A, Al Suwaidi J, Albagha OME. The Prevalence and Genetic Spectrum of Familial Hypercholesterolemia in Qatar Based on Whole Genome Sequencing of 14,000 Subjects. Front Genet 2022; 13:927504. [PMID: 35910211 PMCID: PMC9337875 DOI: 10.3389/fgene.2022.927504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 06/15/2022] [Indexed: 11/25/2022] Open
Abstract
Familial hypercholesterolemia (FH) is an inherited disease characterized by reduced efficiency of low-density lipoprotein-cholesterol (LDL-C) removal from the blood and, consequently, an increased risk of life-threatening early cardiovascular complications. In Qatar, the prevalence of FH has not been determined and the disease, as in many countries, is largely underdiagnosed. In this study, we combined whole-genome sequencing data from the Qatar Genome Program with deep phenotype data from Qatar Biobank for 14,056 subjects to determine the genetic spectrum and estimate the prevalence of FH in Qatar. We used the Dutch Lipid Clinic Network (DLCN) as a diagnostic tool and scrutinized 11 FH-related genes for known pathogenic and possibly pathogenic mutations. Results revealed an estimated prevalence of 0.8% (1:125) for definite/probable cases of FH in the Qatari population. We detected 16 known pathogenic/likely pathogenic mutations in LDLR and one in PCSK9; all in a heterozygous state with high penetrance. The most common mutation was rs1064793799 (c.313+3A >C) followed by rs771019366 (p.Asp90Gly); both in LDLR. In addition, we identified 18 highly penetrant possibly pathogenic variants, of which 5 were Qatari-specific, in LDLR, APOB, PCSK9 and APOE, which are predicted to be among the top 1% most deleterious mutations in the human genome but further validations are required to confirm their pathogenicity. We did not detect any homozygous FH or autosomal recessive mutations in our study cohort. This pioneering study provides a reliable estimate of FH prevalence in Qatar based on a significantly large population-based cohort, whilst uncovering the spectrum of genetic variants associated with FH.
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Affiliation(s)
- Ilhame Diboun
- College of Health and Life Sciences (CHLS), Hamad Bin Khalifa University (HBKU), Qatar Foundation (QF), Doha, Qatar
- Medical and Population Genomics Lab, Sidra Medicine, Doha, Qatar
| | - Yasser Al-Sarraj
- Qatar Genome Program, Qatar Foundation Research, Development and Innovation, Qatar Foundation (QF), Doha, Qatar
| | - Salman M. Toor
- College of Health and Life Sciences (CHLS), Hamad Bin Khalifa University (HBKU), Qatar Foundation (QF), Doha, Qatar
| | - Shaban Mohammed
- Department of Pharmacy, Hamad Medical Corporation, Doha, Qatar
| | - Nadeem Qureshi
- Primary Care Stratified Medicine Research Group, Centre for Academic Primary Care, School of Medicine, University of Nottingham, Nottingham, United Kingdom
| | | | - Amin Jayyousi
- Department of Diabetes, Hamad Medical Corporation (HMC), Doha, Qatar
| | - Jassim Al Suwaidi
- Adult Cardiology, Heart Hospital, Hamad Medical Corporation (HMC), Doha, Qatar
| | - Omar M. E. Albagha
- College of Health and Life Sciences (CHLS), Hamad Bin Khalifa University (HBKU), Qatar Foundation (QF), Doha, Qatar
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, United Kingdom
- *Correspondence: Omar M. E. Albagha,
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Abstract
Lipid disorders involving derangements in serum cholesterol, triglycerides, or both are commonly encountered in clinical practice and often have implications for cardiovascular risk and overall health. Recent advances in knowledge, recommendations, and treatment options have necessitated an updated approach to these disorders. Older classification schemes have outlived their usefulness, yielding to an approach based on the primary lipid disturbance identified on a routine lipid panel as a practical starting point. Although monogenic dyslipidemias exist and are important to identify, most individuals with lipid disorders have polygenic predisposition, often in the context of secondary factors such as obesity and type 2 diabetes. With regard to cardiovascular disease, elevated low-density lipoprotein cholesterol is essentially causal, and clinical practice guidelines worldwide have recommended treatment thresholds and targets for this variable. Furthermore, recent studies have established elevated triglycerides as a cardiovascular risk factor, whereas depressed high-density lipoprotein cholesterol now appears less contributory than was previously believed. An updated approach to diagnosis and risk assessment may include measurement of secondary lipid variables such as apolipoprotein B and lipoprotein(a), together with selective use of genetic testing to diagnose rare monogenic dyslipidemias such as familial hypercholesterolemia or familial chylomicronemia syndrome. The ongoing development of new agents-especially antisense RNA and monoclonal antibodies-targeting dyslipidemias will provide additional management options, which in turn motivates discussion on how best to incorporate them into current treatment algorithms.
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Affiliation(s)
- Amanda J Berberich
- Department of Medicine; Schulich School of Medicine and Dentistry, Western University, London, ON, Canada, N6A 5C1.,Robarts Research Institute, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada, N6A 5B7
| | - Robert A Hegele
- Department of Medicine; Schulich School of Medicine and Dentistry, Western University, London, ON, Canada, N6A 5C1.,Robarts Research Institute, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada, N6A 5B7
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Schmidlen TJ, Bristow SL, Hatchell KE, Esplin ED, Nussbaum RL, Haverfield EV. The Impact of Proband Indication for Genetic Testing on the Uptake of Cascade Testing Among Relatives. Front Genet 2022; 13:867226. [PMID: 35783293 PMCID: PMC9243226 DOI: 10.3389/fgene.2022.867226] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 05/18/2022] [Indexed: 11/17/2022] Open
Abstract
Although multiple factors can influence the uptake of cascade genetic testing, the impact of proband indication has not been studied. We performed a retrospective, cross-sectional study comparing cascade genetic testing rates among relatives of probands who received either diagnostic germline testing or non-indication-based proactive screening via next-generation sequencing (NGS)-based multigene panels for hereditary cancer syndromes (HCS) and/or familial hypercholesterolemia (FH). The proportion of probands with a medically actionable (positive) finding were calculated based on genes associated with Centers for Disease Control and Prevention (CDC) Tier 1 conditions, HCS genes, and FH genes. Among probands with a positive finding, cascade testing rates and influencing factors were assessed. A total of 270,715 probands were eligible for inclusion in the study (diagnostic n = 254,281,93.9%; proactive n = 16,434, 6.1%). A positive result in a gene associated with a CDC Tier 1 condition was identified in 10,520 diagnostic probands (4.1%) and 337 proactive probands (2.1%), leading to cascade testing among families of 3,305 diagnostic probands (31.4%) and 36 proactive probands (10.7%) (p < 0.0001). A positive result in an HCS gene was returned to 23,272 diagnostic probands (9.4%) and 970 proactive probands (6.1%), leading to cascade testing among families of 6,611 diagnostic probands (28.4%) and 89 proactive probands (9.2%) (p < 0.0001). Cascade testing due to a positive result in an HCS gene was more commonly pursued when the diagnostic proband was White, had a finding in a gene associated with a CDC Tier 1 condition, or had a personal history of cancer, or when the proactive proband was female. A positive result in an FH gene was returned to 1,647 diagnostic probands (25.3%) and 67 proactive probands (0.62%), leading to cascade testing among families of 360 diagnostic probands (21.9%) and 4 proactive probands (6.0%) (p < 0.01). Consistently higher rates of cascade testing among families of diagnostic probands may be due to a perceived urgency because of personal or family history of disease. Due to the proven clinical benefit of cascade testing, further research on obstacles to systematic implementation and uptake of testing for relatives of any proband with a medically actionable variant is warranted.
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Bellows BK, Khera AV, Zhang Y, Ruiz-Negrón N, Stoddard HM, Wong JB, Kazi DS, de Ferranti SD, Moran AE. Estimated Yield of Screening for Heterozygous Familial Hypercholesterolemia With and Without Genetic Testing in US Adults. J Am Heart Assoc 2022; 11:e025192. [PMID: 35583136 PMCID: PMC9238728 DOI: 10.1161/jaha.121.025192] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Heterozygous familial hypercholesterolemia (FH) is a common genetic disorder causing premature cardiovascular disease. Despite this, there is no national screening program in the United States to identify individuals with FH or likely pathogenic FH genetic variants. Methods and Results The clinical characteristics and FH variant status of 49 738 UK Biobank participants were used to develop a regression model to predict the probability of having any FH variants. The regression model and modified Dutch Lipid Clinic Network criteria were applied to 39 790 adult participants (aged ≥20 years) in the National Health and Nutrition Examination Survey to estimate the yield of FH screening programs using Dutch Lipid Clinic Network clinical criteria alone (excluding genetic variant status), genetic testing alone, or combining clinical criteria with genetic testing. The regression model accurately predicted FH variant status in UK Biobank participants (observed prevalence, 0.27%; predicted, 0.26%; area under the receiver-operator characteristic curve, 0.88). In the National Health and Nutrition Examination Survey, the estimated yield per 1000 individuals screened (95% CI) was 3.7 (3.0-4.6) FH cases with the Dutch Lipid Clinic Network clinical criteria alone, 3.8 (2.7-5.1) cases with genetic testing alone, and 6.6 (5.3-8.0) cases by combining clinical criteria with genetic testing. In young adults aged 20 to 39 years, using clinical criteria alone was estimated to yield 1.3 (95% CI, 0.6-2.5) FH cases per 1000 individuals screened, which was estimated to increase to 4.2 (95% CI, 2.6-6.4) FH cases when combining clinical criteria with genetic testing. Conclusions Screening for FH using a combination of clinical criteria with genetic testing may increase identification and the opportunity for early treatment of individuals with FH.
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Affiliation(s)
| | - Amit V Khera
- Center for Genomic Medicine Massachusetts General Hospital Boston MA.,Cardiovascular Disease Initiative Broad Institute of MIT and Harvard Cambridge MA.,Department of Medicine Harvard Medical School Boston MA
| | - Yiyi Zhang
- Department of Medicine Columbia University New York NY
| | | | | | - John B Wong
- Department of Medicine Tufts Medical Center Boston MA
| | - Dhruv S Kazi
- Department of Medicine Harvard Medical School Boston MA.,Richard A. and Susan F. Smith Center for Outcomes Research in Cardiology Beth Israel Deaconess Medical Center Boston MA
| | - Sarah D de Ferranti
- Department of Pediatrics Harvard Medical School Boston MA.,Department of Cardiology Boston Children's Hospital Boston MA
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Jahn B, Santamaria J, Dieplinger H, Binder CJ, Ebenbichler C, Scholl-Bürgi S, Conrads-Frank A, Rochau U, Kühne F, Stojkov I, Todorovic J, James L, Siebert U. Familial hypercholesterolemia: A systematic review of modeling studies on screening interventions. Atherosclerosis 2022; 355:15-29. [DOI: 10.1016/j.atherosclerosis.2022.06.1011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 06/07/2022] [Accepted: 06/09/2022] [Indexed: 11/26/2022]
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49
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Loh WJ, Chan DC, Mata P, Watts GF. Familial Hypercholesterolemia and Elevated Lipoprotein(a): Cascade Testing and Other Implications for Contextual Models of Care. Front Genet 2022; 13:905941. [PMID: 35571022 PMCID: PMC9091303 DOI: 10.3389/fgene.2022.905941] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 04/04/2022] [Indexed: 11/13/2022] Open
Abstract
Elevated lipoprotein(a) [Lp(a)], a predominantly genetic disorder, is a causal risk factor for atherosclerotic cardiovascular disease (ASCVD) and calcific aortic valvular disease, particularly in patients with familial hypercholesterolemia (FH), a Tier I genomic condition. The combination from birth of the cumulative exposure to elevated plasma concentrations of both Lp(a) and low-density lipoprotein is particularly detrimental and explains the enhanced morbidity and mortality risk observed in patients with both conditions. An excellent opportunity to identify at-risk patients with hyper-Lp(a) at increased risk of ASCVD is to test for hyper-Lp(a) during cascade testing for FH. With probands having FH and hyper-Lp(a), the yield of detection of hyper-Lp(a) is 1 individual for every 2.1-2.4 relatives tested, whereas the yield of detection of both conditions is 1 individual for every 3-3.4 relatives tested. In this article, we discuss the incorporation of assessment of Lp(a) in the cascade testing in FH as a feasible and crucial part of models of care for FH. We also propose a simple management tool to help physicians identify and manage elevated Lp(a) in FH, with implications for the care of Lp(a) beyond FH, noting that the clinical use of RNA therapeutics for specifically targeting the overproduction of Lp(a) in at risk patients is still under investigation.
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Affiliation(s)
- Wann Jia Loh
- Department of Endocrinology, Changi General Hospital, Singapore, Singapore
| | - Dick C Chan
- Medical School, University of Western Australia, Perth, WA, Australia
| | - Pedro Mata
- Fundación Hipercolesterolemia Familiar, Madrid, Spain
| | - Gerald F Watts
- Medical School, University of Western Australia, Perth, WA, Australia.,Lipid Disorders Clinic, Department of Cardiology and Internal Medicine, Royal Perth Hospital, Perth, WA, Australia
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Mainieri F, Tagi VM, Chiarelli F. Recent Advances on Familial Hypercholesterolemia in Children and Adolescents. Biomedicines 2022; 10:1043. [PMID: 35625781 PMCID: PMC9139047 DOI: 10.3390/biomedicines10051043] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/27/2022] [Accepted: 04/28/2022] [Indexed: 02/04/2023] Open
Abstract
Familial hypercholesterolemia is a common autosomal hereditary disorder characterized by elevated concentrations of low-density lipoprotein cholesterol and the development of premature atherosclerosis and cardiovascular disease. Early diagnosis, as well as prompt and aggressive treatment, are fundamental steps to prevent cardiovascular complications and a high rate of premature mortality in children and adolescents. Clinics and genetics are the two main aspects on which diagnosis is based. Widespread screening programs are a respectable option for the early detection of familial hypercholesterolemia. Different types of screening have been proposed so far; however, the optimal screening program has not yet been found. The treatment approach for both heterozygous and homozygous familial hypercholesterolemia in the pediatric population is multidisciplinary, including lifestyle modifications, standard lipid-lowering medications, and novel pharmacological agents. The latter show promising results, especially for patients who experience intolerance to other treatment or present with more severe conditions. Our purpose is to focus on the importance of the early detection of familial hypercholesterolemia, and to highlight the best therapeutic strategies, including the recent approaches based on current clinical evidence, that need to be adopted from the earliest stages of life.
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Affiliation(s)
- Francesca Mainieri
- Department of Paediatrics, University of Chieti, 66100 Chieti, Italy; (V.M.T.); (F.C.)
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