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Trikudanathan G, Yazici C, Evans Phillips A, Forsmark CE. Diagnosis and Management of Acute Pancreatitis. Gastroenterology 2024; 167:673-688. [PMID: 38759844 DOI: 10.1053/j.gastro.2024.02.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 01/03/2024] [Accepted: 02/18/2024] [Indexed: 05/19/2024]
Abstract
Acute pancreatitis (AP) is increasing in incidence across the world, and in all age groups. Major changes in management have occurred in the last decade. Avoiding total parenteral nutrition and prophylactic antibiotics, avoiding overly aggressive fluid resuscitation, initiating early feeding, avoiding endoscopic retrograde cholangiopancreatography in the absence of concomitant cholangitis, same-admission cholecystectomy, and minimally invasive approaches to infected necrosis should now be standard of care. Increasing recognition of the risk of recurrence of AP, and progression to chronic pancreatitis, along with the unexpectedly high risk of diabetes and exocrine insufficiency after AP is the subject of large ongoing studies. In this review, we provide an update on important changes in management for this increasingly common disease.
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Affiliation(s)
- Guru Trikudanathan
- Division of Gastroenterology, Hepatology, and Nutrition, University of Minnesota, Minneapolis, Minnesota
| | - Cemal Yazici
- Division of Gastroenterology and Hepatology, University of Illinois, Chicago, Illinois
| | - Anna Evans Phillips
- Division of Gastroenterology, Hepatology, and Nutrition, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Chris E Forsmark
- Division of Gastroenterology, Hepatology, and Nutrition, University of Florida, Gainesville, Florida.
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Bardey F, Rieck L, Spira D, März W, Binner P, Schwab S, Kleber ME, Danyel M, Barkowski R, Bobbert T, Spranger J, Steinhagen-Thiessen E, Demuth I, Kassner U. Clinical characterization and mutation spectrum of patients with hypertriglyceridemia in a German outpatient clinic. J Lipid Res 2024:100589. [PMID: 38969064 DOI: 10.1016/j.jlr.2024.100589] [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: 04/10/2023] [Revised: 06/13/2024] [Accepted: 06/21/2024] [Indexed: 07/07/2024] Open
Abstract
BACKGROUND Severe hypertriglyceridemia (HTG) has predominantly multifactorial causes (MCS). Yet a small subset of patients have the monogenetic form (FCS). It remains a challenge to distinguish patients clinically, since decompensated MCS might mimic FCS´s severity. Aim of the current study was to determine clinical criteria that could sufficiently distinguish both forms as well as to apply the FCS score proposed by Moulin and colleagues. METHODS We retrospectively studied 72 patients who presented with severe HTG in our clinic during a time span of seven years and received genetic testing. We classified genetic variants (ACMG-criteria), followed by genetic categorization into MCS or FCS. Clinical data were gathered from the medical records and the FCS score was calculated for each patient. RESULTS Molecular genetic screening revealed eight FCS patients and 64 MCS patients. Altogether, we found 13 pathogenic variants of which four have not been described before. The FCS patients showed a significantly higher median triglyceride level compared to the MCS. The FCS score yielded a sensitivity of 75% and a specificity of 93.7% in our cohort, and significantly differentiated between the FCS and MCS group (p<0.001). CONCLUSIONS In our cohort we identified several variables that significantly differentiated FCS from MCS. The FCS score performed similar to the original study by Moulin, thereby further validating the discriminatory power of the FCS score in an independent cohort.
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Affiliation(s)
- Frieda Bardey
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Endocrinology and Metabolic Diseases (including Division of Lipid Metabolism), Augustenburger Platz 1, 13353 Berlin, Germany
| | - Lorenz Rieck
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Endocrinology and Metabolic Diseases (including Division of Lipid Metabolism), Augustenburger Platz 1, 13353 Berlin, Germany
| | - Dominik Spira
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Endocrinology and Metabolic Diseases (including Division of Lipid Metabolism), Augustenburger Platz 1, 13353 Berlin, Germany
| | - Winfried März
- Synlab Academy, P5, 7, 68167 Mannheim, Germany; Vth Department of Medicine, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany; Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Auenbrugger Platz 15, 8036 Graz
| | - Priska Binner
- Synlab Center of Human Genetics, Harrlachweg 1, 68163 Mannheim, Germany
| | - Stefanie Schwab
- Synlab Center of Human Genetics, Harrlachweg 1, 68163 Mannheim, Germany
| | - Marcus E Kleber
- Vth Department of Medicine, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany; Synlab Center of Human Genetics, Harrlachweg 1, 68163 Mannheim, Germany
| | - Magdalena Danyel
- Berlin Institute of Health (BIH), Berlin, Germany; Institute of Medical Genetics and Human Genetics, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Augustenburger Platz 1, Berlin, 13353, Germany
| | - Rasmus Barkowski
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Endocrinology and Metabolic Diseases (including Division of Lipid Metabolism), Augustenburger Platz 1, 13353 Berlin, Germany
| | - Thomas Bobbert
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Endocrinology and Metabolic Diseases (including Division of Lipid Metabolism), Augustenburger Platz 1, 13353 Berlin, Germany
| | - Joachim Spranger
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Endocrinology and Metabolic Diseases (including Division of Lipid Metabolism), Augustenburger Platz 1, 13353 Berlin, Germany
| | - Elisabeth Steinhagen-Thiessen
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Endocrinology and Metabolic Diseases (including Division of Lipid Metabolism), Augustenburger Platz 1, 13353 Berlin, Germany
| | - Ilja Demuth
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Endocrinology and Metabolic Diseases (including Division of Lipid Metabolism), Augustenburger Platz 1, 13353 Berlin, Germany; Charité - Universitätsmedizin Berlin, BCRT - Berlin Institute of Health Center for Regenerative Therapies, Berlin, Germany.
| | - Ursula Kassner
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Endocrinology and Metabolic Diseases (including Division of Lipid Metabolism), Augustenburger Platz 1, 13353 Berlin, Germany
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Wanninayake S, Ochoa‐Ferraro A, Patel K, Ramachandran R, Wierzbicki AS, Dawson C. Two successful pregnancies -in patients taking Volanesorsen for familial chylomicronemia syndrome. JIMD Rep 2024; 65:249-254. [PMID: 38974616 PMCID: PMC11224504 DOI: 10.1002/jmd2.12435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 05/17/2024] [Accepted: 05/23/2024] [Indexed: 07/09/2024] Open
Abstract
Familial chylomicronemia syndrome (FCS) is a rare inherited disorder characterized by severe hypertriglyceridemia, posing a heightened risk of acute pancreatitis. Recently, Volanesorsen, an APOC3 antisense oligonucleotide, gained approval for FCS treatment in the UK. Caution is advised during pregnancy due to limited safety data, although animal studies show no toxicity/teratogenicity. Two case scenarios are presented: In the first case, a patient with FCS continued Volanesorsen injections without having thrombocytopenia during an unplanned pregnancy until third trimester, maintaining triglyceride control. Upon discovering the pregnancy at 38 weeks, Volanesorsen was ceased, and a low-fat diet reinstated. Despite a heightened risk of pancreatitis, no episodes of pancreatitis occurred during the pregnancy. In the second case, stopping Volanesorsen before conception led to elevated triglycerides, and an episode of acute pancreatitis at 22 weeks, despite strict very low-fat diet and fibrate therapy from 14 weeks. At 23 weeks, Volanesorsen was reintroduced concurrently with regular therapeutic plasma exchange. No further episodes of pancreatitis occurred. In both case, fetal health was maintained throughout pregnancy, fetal scans revealed no anomalies, and planned C-sections delivered healthy babies without congenital issues. Both babies are well and developing normally at 24 and 19 months.
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Affiliation(s)
- Subadra Wanninayake
- Department of Diabetes, Endocrinology and MetabolismUniversity Hospitals Birmingham NHS Foundation TrustBirminghamUK
| | - Antonio Ochoa‐Ferraro
- Department of Diabetes, Endocrinology and MetabolismUniversity Hospitals Birmingham NHS Foundation TrustBirminghamUK
| | | | - Radha Ramachandran
- Department of Adult Inherited Metabolic Diseases, Metabolic Medicine and Chemical PathologyGuys and St Thomas' Hospitals NHS Foundation TrustLondonUK
| | - Anthony S. Wierzbicki
- Department of Adult Inherited Metabolic Diseases, Metabolic Medicine and Chemical PathologyGuys and St Thomas' Hospitals NHS Foundation TrustLondonUK
| | - Charlotte Dawson
- Department of Diabetes, Endocrinology and MetabolismUniversity Hospitals Birmingham NHS Foundation TrustBirminghamUK
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Gao WY, Chen PY, Hsu HJ, Liou JW, Wu CL, Wu MJ, Yen JH. Xanthohumol, a prenylated chalcone, regulates lipid metabolism by modulating the LXRα/RXR-ANGPTL3-LPL axis in hepatic cell lines and high-fat diet-fed zebrafish models. Biomed Pharmacother 2024; 174:116598. [PMID: 38615609 DOI: 10.1016/j.biopha.2024.116598] [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: 01/18/2024] [Revised: 04/08/2024] [Accepted: 04/11/2024] [Indexed: 04/16/2024] Open
Abstract
Angiopoietin-like 3 (ANGPTL3) acts as an inhibitor of lipoprotein lipase (LPL), impeding the breakdown of triglyceride-rich lipoproteins (TGRLs) in circulation. Targeting ANGPTL3 is considered a novel strategy for improving dyslipidemia and atherosclerotic cardiovascular diseases (ASCVD). Hops (Humulus lupulus L.) contain several bioactive prenylflavonoids, including xanthohumol (Xan), isoxanthohumol (Isoxan), 6-prenylnaringenin (6-PN), and 8-prenylnaringenin (8-PN), with the potential to manage lipid metabolism. The aim of this study was to investigate the lipid-lowering effects of Xan, the effective prenylated chalcone in attenuating ANGPTL3 transcriptional activity, both in vitro using hepatic cells and in vivo using zebrafish models, along with exploring the underlying mechanisms. Xan (10 and 20 μM) significantly reduced ANGPTL3 mRNA and protein expression in HepG2 and Huh7 cells, leading to a marked decrease in secreted ANGPTL3 proteins via hepatic cells. In animal studies, orally administered Xan significantly alleviated plasma triglyceride (TG) and cholesterol levels in zebrafish fed a high-fat diet. Furthermore, it reduced hepatic ANGPTL3 protein levels and increased LPL activity in zebrafish models, indicating its potential to modulate lipid profiles in circulation. Furthermore, molecular docking results predicted that Xan exhibits a higher binding affinity to interact with liver X receptor α (LXRα) and retinoic acid X receptor (RXR) than their respective agonists, T0901317 and 9-Cis-retinoic acid (9-Cis-RA). We observed that Xan suppressed hepatic ANGPTL3 expression by antagonizing the LXRα/RXR-mediated transcription. These findings suggest that Xan ameliorates dyslipidemia by modulating the LXRα/RXR-ANGPTL3-LPL axis. Xan represents a novel potential inhibitor of ANGPTL3 for the prevention or treatment of ASCVD.
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Affiliation(s)
- Wan-Yun Gao
- Institute of Medical Sciences, Tzu Chi University, Hualien 970374, Taiwan
| | - Pei-Yi Chen
- Laboratory of Medical Genetics, Genetic Counseling Center, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien 970374, Taiwan; Department of Molecular Biology and Human Genetics, Tzu Chi University, Hualien 970374, Taiwan
| | - Hao-Jen Hsu
- Department of Biomedical Science and Engineering, Tzu Chi University, Hualien 970374, Taiwan
| | - Je-Wen Liou
- Department of Biochemistry, School of Medicine, Tzu Chi University, Hualien 970374, Taiwan
| | - Chia-Ling Wu
- Laboratory of Medical Genetics, Genetic Counseling Center, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien 970374, Taiwan
| | - Ming-Jiuan Wu
- Department of Biotechnology, Chia Nan University of Pharmacy and Science, Tainan 717301, Taiwan
| | - Jui-Hung Yen
- Institute of Medical Sciences, Tzu Chi University, Hualien 970374, Taiwan; Department of Molecular Biology and Human Genetics, Tzu Chi University, Hualien 970374, Taiwan.
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5
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Chait A. Multifactorial chylomicronemia syndrome. Curr Opin Endocrinol Diabetes Obes 2024; 31:78-83. [PMID: 37994661 DOI: 10.1097/med.0000000000000846] [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: 11/24/2023]
Abstract
PURPOSE OF REVIEW The aim of this review was to understand the role of multifactorial chylomicronemia syndrome (MFCS) as a cause of severe hypertriglyceridemia; to distinguish it from other causes of severe hypertriglyceridemia; and to provide a rational approach to treatment. RECENT FINDINGS There have been advances in understanding the genetic underpinning of MFCS, and a better appreciation as to how to differentiate it from the much rarer familial chylomicronemia syndrome, in which there are substantial differences in the approach to their treatment. New approaches to triglyceride lowering will help reduce the risk of pancreatitis, the major complication of MFCS. SUMMARY MCSF is a condition in which plasma triglyceride levels are severely elevated, usually to due exacerbation of common genetic forms of hypertriglyceridemia by secondary causes of hypertriglyceridemia and/or triglyceride-raising drugs. Triglyceride-induced pancreatitis can be prevented by markedly reducing triglyceride levels by treating secondary causes and/or eliminating of triglyceride-raising drugs, and by using triglyceride-lowering drugs, especially fibrates. MFCS also increases cardiovascular disease risk, for which lifestyle measures and drugs are required.
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Affiliation(s)
- Alan Chait
- Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, University of Washington, Seattle, USA
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6
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Gabani M, Shapiro MD, Toth PP. The Role of Triglyceride-rich Lipoproteins and Their Remnants in Atherosclerotic Cardiovascular Disease. Eur Cardiol 2023; 18:e56. [PMID: 37860700 PMCID: PMC10583159 DOI: 10.15420/ecr.2023.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 07/03/2023] [Indexed: 10/21/2023] Open
Abstract
Atherosclerotic cardiovascular disease (ASCVD) is the world's leading cause of death. ASCVD has multiple mediators that therapeutic interventions target, such as dyslipidaemia, hypertension, diabetes and heightened systemic inflammatory tone, among others. LDL cholesterol is one of the most well-studied and established mediators targeted for primary and secondary prevention of ASCVD. However, despite the strength of evidence supporting LDL cholesterol reduction by multiple management strategies, ASCVD events can still recur, even in patients whose LDL cholesterol has been very aggressively reduced. Hypertriglyceridaemia and elevated levels of triglyceride-rich lipoproteins (TRLs) may be key contributors to ASCVD residual risk. Several observational and genetic epidemiological studies have highlighted the causal role of triglycerides within the TRLs and/or their remnant cholesterol in the development and progression of ASCVD. TRLs consist of intestinally derived chylomicrons and hepatically synthesised very LDL. Lifestyle modification has been considered the first line intervention for managing hypertriglyceridaemia. Multiple novel targeted therapies are in development, and have shown efficacy in the preclinical and clinical phases of study in managing hypertriglyceridaemia and elevated TRLs. This comprehensive review provides an overview of the biology, pathogenicity, epidemiology, and genetics of triglycerides and TRLs, and how they impact the risk for ASCVD. In addition, we provide a summary of currently available and novel emerging triglyceride-lowering therapies in development.
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Affiliation(s)
- Mohanad Gabani
- Division of Cardiology, Wake Forest Baptist HealthWinston-Salem, North Carolina, US
| | - Michael D Shapiro
- Division of Cardiology, Wake Forest Baptist HealthWinston-Salem, North Carolina, US
| | - Peter P Toth
- CGH Medical CenterSterling, Illinois, US
- Ciccarone Center for the Prevention of Cardiovascular Disease, Johns Hopkins University School of MedicineBaltimore, Maryland, US
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Dybiec J, Baran W, Dąbek B, Fularski P, Młynarska E, Radzioch E, Rysz J, Franczyk B. Advances in Treatment of Dyslipidemia. Int J Mol Sci 2023; 24:13288. [PMID: 37686091 PMCID: PMC10488025 DOI: 10.3390/ijms241713288] [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: 07/21/2023] [Revised: 08/16/2023] [Accepted: 08/25/2023] [Indexed: 09/10/2023] Open
Abstract
Dyslipidemias have emerged as prevalent disorders among patients, posing significant risks for the development and progression of cardiovascular diseases. These conditions are characterized by elevated levels of total cholesterol (TC), triglycerides (TGs), and low-density lipoprotein cholesterol (LDL-C). This review delves into the current treatment approach, focusing on equalizing these parameters while enhancing the overall quality of life for patients. Through an extensive analysis of clinical trials, we identify disorders that necessitate alternative treatment strategies, notably familial hypercholesterolemia. The primary objective of this review is to consolidate existing information concerning drugs with the potential to revolutionize dyslipidemia management significantly. Among these promising pharmaceuticals, we highlight alirocumab, bempedoic acid, antisense oligonucleotides, angiopoietin-like protein inhibitors, apolipoprotein C-III (APOC3) inhibitors, lomitapide, and cholesterol ester transfer protein (CETP) inhibitors. Our review demonstrates the pivotal roles played by each of these drugs in targeting specific parameters of lipid metabolism. We outline the future landscape of dyslipidemia treatment, envisaging a more tailored and effective therapeutic approach to address this widespread medical concern.
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Affiliation(s)
- Jill Dybiec
- Department of Nephrocardiology, Medical University of Lodz, ul. Zeromskiego 113, 90-549 Lodz, Poland
| | - Wiktoria Baran
- Department of Nephrocardiology, Medical University of Lodz, ul. Zeromskiego 113, 90-549 Lodz, Poland
| | - Bartłomiej Dąbek
- Department of Nephrocardiology, Medical University of Lodz, ul. Zeromskiego 113, 90-549 Lodz, Poland
| | - Piotr Fularski
- Department of Nephrocardiology, Medical University of Lodz, ul. Zeromskiego 113, 90-549 Lodz, Poland
| | - Ewelina Młynarska
- Department of Nephrocardiology, Medical University of Lodz, ul. Zeromskiego 113, 90-549 Lodz, Poland
| | - Ewa Radzioch
- Department of Nephrocardiology, Medical University of Lodz, ul. Zeromskiego 113, 90-549 Lodz, Poland
| | - Jacek Rysz
- Department of Nephrology, Hypertension and Family Medicine, Medical University of Lodz, ul. Zeromskiego 113, 90-549 Lodz, Poland
| | - Beata Franczyk
- Department of Nephrocardiology, Medical University of Lodz, ul. Zeromskiego 113, 90-549 Lodz, Poland
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Gligorijevic N, Stefanovic-Racic M, Kershaw EE. Medical management of hypertriglyceridemia in pancreatitis. Curr Opin Gastroenterol 2023:00001574-990000000-00085. [PMID: 37421386 DOI: 10.1097/mog.0000000000000956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/10/2023]
Abstract
PURPOSE OF REVIEW Hypertriglyceridemia-induced acute pancreatitis (HTG-AP) should be considered in all cases of acute pancreatitis and triglyceride levels measured early, so that appropriate early and long-term treatment can be initiated. RECENT FINDINGS In most cases of HTG-AP, conservative management (nothing by mouth, intravenous fluid resuscitation and analgesia) is sufficient to achieve triglyceride levels less than 500 mg/dl. Intravenous insulin and plasmapheresis are sometimes used, although prospective studies showing clinical benefits are lacking. Pharmacological management of hypertriglyceridemia (HTG) should start early and target triglyceride levels of less than 500 mg/dl to reduce the risk or recurrent acute pancreatitis. In addition to currently used fenofibrate and omega-3 fatty acids, several novel agents are being studied for long-term treatment of HTG. These emerging therapies focus mainly on modifying the action of lipoprotein lipase (LPL) through inhibition of apolipoprotein CIII and angiopoietin-like protein 3. Dietary modifications and avoidance of secondary factors that worsen triglyceride levels should also be pursued. In some cases of HTG-AP, genetic testing may help personalize management and improve outcomes. SUMMARY Patients with HTG-AP require acute and long-term management of HTG with the goal of reducing and maintaining triglyceride levels to less than 500 mg/dl.
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Affiliation(s)
- Nikola Gligorijevic
- Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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Larouche M, Brisson D, Morissette MC, Gaudet D. Post-prandial analysis of fluctuations in the platelet count and platelet function in patients with the familial chylomicronemia syndrome. Orphanet J Rare Dis 2023; 18:167. [PMID: 37370069 DOI: 10.1186/s13023-023-02743-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 05/18/2023] [Indexed: 06/29/2023] Open
Abstract
BACKGROUND The familial chylomicronemia syndrome (FCS) is an ultra rare disease caused by lipoprotein lipase (LPL) deficiency associated with potentially lethal acute pancreatitis risk. Thrombocytopenia (platelet count < 150,000 × 109/L) has been reported in patients with FCS, treated or not with volanesorsen, a second generation APOC3 anti-sense oligonucleotide. Chylomicrons are the lipoproteins delivering fat after a meal and FCS thus has a post-prandial origin. Platelet count and function have not been studied post-prandially in FCS. OBJECTIVE To evaluate post-prandial fluctuations in the platelet count (PLC) and functional defects of hemostasis in FCS. METHODS PLC, functional defects in hemostasis and hematologic variables were measured up-to 5 h after a meal in 6 homozygotes for FCS causing gene variants (HoLPL), 6 heterozygotes for LPL loss-of-function variants (HeLPL) and 7 normolipidemic controls. RESULTS Hourly post-prandial PLC was significantly lower in HoLPL than in controls (P < 0.009). Compared to the other groups, the PLC tended to decrease rapidly (in the first hour) post-meal in HoLPL (P = 0.03) and remained lower than baseline 5-h post-meal (P = 0.02) whereas it tended to slightly increase in normolipidemic controls (P = 0.02). Platelet function was not affected by the prandial status. In HoLPL, post-prandial fluctuations in the PLC positively correlated with the lymphocyte count (P = 0.005) and negatively with neutrophil/lymphocyte ratio (NLR). CONCLUSION The PLC decreases post-prandially in FCS (HoLPL), is not associated with changes in functional defects of hemostasis and correlates with the NLR, a marker of acute pancreatitis severity.
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Affiliation(s)
- Miriam Larouche
- Department of Medicine, Université de Montréal, ECOGENE-21, 930 Jacques Cartier Est, Chicoutimi, G7H 7K9, Canada
| | - Diane Brisson
- Department of Medicine, Université de Montréal, ECOGENE-21, 930 Jacques Cartier Est, Chicoutimi, G7H 7K9, Canada
| | - Marie-Claude Morissette
- Department of Medicine, Université de Montréal, ECOGENE-21, 930 Jacques Cartier Est, Chicoutimi, G7H 7K9, Canada
| | - Daniel Gaudet
- Department of Medicine, Université de Montréal, ECOGENE-21, 930 Jacques Cartier Est, Chicoutimi, G7H 7K9, Canada.
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Jones A, Peers K, Wierzbicki AS, Ramachandran R, Mansfield M, Dawson C, Ochoa-Ferraro A, Soran H, Jenkinson F, McDowell I, Downie P, Hamilton P, Jones RD. Long-term effects of volanesorsen on triglycerides and pancreatitis in patients with familial chylomicronaemia syndrome (FCS) in the UK Early Access to Medicines Scheme (EAMS). Atherosclerosis 2023; 375:67-74. [PMID: 37253281 DOI: 10.1016/j.atherosclerosis.2023.05.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 05/05/2023] [Accepted: 05/09/2023] [Indexed: 06/01/2023]
Abstract
BACKGROUND AND AIMS The VOL4002 study assessed the efficacy and safety of volanesorsen in 22 adults with genetically confirmed familial chylomicronaemia syndrome (FCS) treated in the UK Early Access to Medicines Scheme (EAMS), with ("prior exposure") or without ("treatment naive") previous treatment in the APPROACH and/or APPROACH-OLE volanesorsen phase 3 studies. METHODS Data collection focused on triglyceride (TG) levels, platelet counts and pancreatitis events. Pancreatitis incidence during volanesorsen treatment was compared against the 5-year period preceding volanesorsen exposure. Volanesorsen 285 mg was self-administered subcutaneously once every 2 weeks. RESULTS Individual patient volanesorsen exposure ranged from 6 to 51 months (total cumulative exposure, 589 months). Among treatment-naive patients (n = 12), volanesorsen treatment resulted in an averaged median 52% reduction (-10.6 mmol/L) from baseline (26.4 mmol/L) in TG levels at 3 months, which were maintained through time points over 15 months of treatment (47%-55% reductions). Similarly, prior-exposure patients (n = 10) experienced a 51% reduction (-17.8 mmol/L) from pre-treatment baseline (28.0 mmol/L), with reductions of 10%-38% over 21 months of treatment. A comparison of pancreatitis event rates found a 74% reduction from the 5-year period before (one event/2.8 years) and during (one event/11.0 years) volanesorsen treatment. Platelet declines were consistent with observations in phase 3 clinical trials. No patient recorded a platelet count <50 × 109/L. CONCLUSIONS This longitudinal study supports the efficacy of volanesorsen in patients with FCS for lowering TG levels over treatment periods up to 51 months with no apparent safety signals related to increased duration of exposure.
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Affiliation(s)
- Alan Jones
- Birmingham Heartlands Hospital, Bordesley Green East, Bordesley Green, Birmingham, West Midlands, B9 5SS, UK.
| | - Katherine Peers
- Birmingham Heartlands Hospital, Bordesley Green East, Bordesley Green, Birmingham, West Midlands, B9 5SS, UK
| | | | | | - Michael Mansfield
- Leeds Teaching Hospitals, Beckett Street, Leeds, West Yorkshire, LS9 7TF, UK
| | - Charlotte Dawson
- University Hospitals, Trust Headquarters, Queen Elizabeth Hospital Birmingham, Mindelsohn Way, Edgbaston, Birmingham, West Midlands, B15 2GW, UK
| | - Antonio Ochoa-Ferraro
- University Hospitals, Trust Headquarters, Queen Elizabeth Hospital Birmingham, Mindelsohn Way, Edgbaston, Birmingham, West Midlands, B15 2GW, UK
| | - Handrean Soran
- Manchester University, Cobbett House, Manchester University NHS Foundation Trust, Oxford Road, Manchester, M13 9WL, UK
| | - Fiona Jenkinson
- Royal Victoria Infirmary, Queen Victoria Rd, Newcastle upon Tyne, NE1 4LP, UK
| | - Ian McDowell
- Cardiff University School of Medicine, Neuadd Meirionnydd, Cardiff, CF14 4YS, UK
| | - Paul Downie
- Salisbury District General Hospital, Odstock Rd, Salisbury, SP2 8BJ, UK
| | - Paul Hamilton
- Centre for Medical Education, Queen's University Belfast, 97 Lisburn Rd, Belfast, BT9 7BL, UK
| | - Richard D Jones
- Akcea Therapeutics, St James House, 72 Adelaide Road, Dublin 2, D02 YO17, Ireland
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Rioja J, Ariza MJ, Benítez-Toledo MJ, Espíldora-Hernández J, Coca-Prieto I, Arrobas-Velilla T, Camacho A, Olivecrona G, Sánchez-Chaparro MÁ, Valdivielso P. Role of lipoprotein lipase activity measurement in the diagnosis of familial chylomicronemia syndrome. J Clin Lipidol 2023; 17:272-280. [PMID: 36813655 DOI: 10.1016/j.jacl.2023.01.005] [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: 09/16/2022] [Revised: 01/11/2023] [Accepted: 01/18/2023] [Indexed: 01/27/2023]
Abstract
BACKGROUND Activity assays for lipoprotein lipase (LPL) are not standardised for use in clinical settings. OBJECTIVE This study sought to define and validate a cut-off points based on a ROC curve for the diagnosis of patients with familial chylomicronemia syndrome (FCS). We also evaluated the role of LPL activity in a comprehensive FCS diagnostic workflow. METHODS A derivation cohort (including an FCS group (n = 9), a multifactorial chylomicronemia syndrome (MCS) group (n = 11)), and an external validation cohort (including an FCS group (n = 5), a MCS group (n = 23) and a normo-triglyceridemic (NTG) group (n = 14)), were studied. FCS patients were previously diagnosed by the presence of biallelic pathogenic genetic variants in the LPL and GPIHBP1 genes. LPL activity was also measured. Clinical and anthropometric data were recorded, and serum lipids and lipoproteins were measured. Sensitivity, specificity and cut-offs for LPL activity were obtained from a ROC curve and externally validated. RESULTS All post-heparin plasma LPL activity in the FCS patients were below 25.1 mU/mL, that was cut-off with best performance. There was no overlap in the LPL activity distributions between the FCS and MCS groups, conversely to the FCS and NTG groups. CONCLUSION We conclude that, in addition to genetic testing, LPL activity in subjects with severe hypertriglyceridemia is a reliable criterium in the diagnosis of FCS when using a cut-off of 25.1 mU/mL (25% of the mean LPL activity in the validation MCS group). We do not recommend the NTG patient based cut-off values due to low sensitivity.
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Affiliation(s)
- José Rioja
- Lipids and Atherosclerosis Laboratory, Department of Medicine and Dermatology, Centro de Investigaciones Médico Sanitarias (CIMES), Instituto de Investigación Biomédica de Málaga (IBIMA), University of Málaga, Málaga, Spain (Drs Rioja, Ariza, Sánchez-Chaparro and Valdivielso)
| | - María José Ariza
- Lipids and Atherosclerosis Laboratory, Department of Medicine and Dermatology, Centro de Investigaciones Médico Sanitarias (CIMES), Instituto de Investigación Biomédica de Málaga (IBIMA), University of Málaga, Málaga, Spain (Drs Rioja, Ariza, Sánchez-Chaparro and Valdivielso).
| | - María José Benítez-Toledo
- Lipid Unit, University Hospital Virgen de la Victoria, Málaga, Spain (Drs Benítez-Toledo, Espíldora-Hernández, Coca-Prieto, Sánchez-Chaparro and Valdivielso)
| | - Javier Espíldora-Hernández
- Lipid Unit, University Hospital Virgen de la Victoria, Málaga, Spain (Drs Benítez-Toledo, Espíldora-Hernández, Coca-Prieto, Sánchez-Chaparro and Valdivielso)
| | - Inmaculada Coca-Prieto
- Lipid Unit, University Hospital Virgen de la Victoria, Málaga, Spain (Drs Benítez-Toledo, Espíldora-Hernández, Coca-Prieto, Sánchez-Chaparro and Valdivielso)
| | | | - Ana Camacho
- Unidad de Riesgo Vascular. Hospital Infanta Elena, Huelva, Spain (Dr Camacho)
| | - Gunilla Olivecrona
- Department of Medical Biosciences/Physiological Chemistry, Umeå University, Umeå, Sweden (Dr Olivecrona)
| | - Miguel Ángel Sánchez-Chaparro
- Lipids and Atherosclerosis Laboratory, Department of Medicine and Dermatology, Centro de Investigaciones Médico Sanitarias (CIMES), Instituto de Investigación Biomédica de Málaga (IBIMA), University of Málaga, Málaga, Spain (Drs Rioja, Ariza, Sánchez-Chaparro and Valdivielso); Lipid Unit, University Hospital Virgen de la Victoria, Málaga, Spain (Drs Benítez-Toledo, Espíldora-Hernández, Coca-Prieto, Sánchez-Chaparro and Valdivielso)
| | - Pedro Valdivielso
- Lipids and Atherosclerosis Laboratory, Department of Medicine and Dermatology, Centro de Investigaciones Médico Sanitarias (CIMES), Instituto de Investigación Biomédica de Málaga (IBIMA), University of Málaga, Málaga, Spain (Drs Rioja, Ariza, Sánchez-Chaparro and Valdivielso); Lipid Unit, University Hospital Virgen de la Victoria, Málaga, Spain (Drs Benítez-Toledo, Espíldora-Hernández, Coca-Prieto, Sánchez-Chaparro and Valdivielso)
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Izar MCDO, Santos Filho RDD, Assad MHV, Chagas ACP, Toledo Júnior ADO, Nogueira ACC, Souto ACCF, Lottenberg AMP, Chacra APM, Ferreira CEDS, Lourenço CM, Valerio CM, Cintra DE, Fonseca FAH, Campana GA, Bianco HT, Lima JGD, Castelo MHCG, Scartezini M, Moretti MA, Barreto NSF, Maia RE, Montenegro Junior RM, Alves RJ, Figueiredo RMM, Fock RA, Martinez TLDR. Brazilian Position Statement for Familial Chylomicronemia Syndrome - 2023. Arq Bras Cardiol 2023; 120:e20230203. [PMID: 37075362 PMCID: PMC10348387 DOI: 10.36660/abc.20230203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023] Open
Affiliation(s)
| | | | | | | | | | | | | | - Ana Maria Pitta Lottenberg
- Laboratório de Lípides (LIM 10) do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (HCFMUSP), São Paulo, SP - Brasil
- Hospital Israelita Albert Einstein (HIAE), São Paulo, SP - Brasil
| | - Ana Paula Marte Chacra
- Instituto do Coração (Incor) do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (HCFMUSP), São Paulo, SP - Brasil
| | | | | | - Cynthia Melissa Valerio
- Instituto Estadual de Diabetes e Endocrinologia Luiz Capriglione (IEDE-RJ), Rio de Janeiro, RJ - Brasil
| | | | | | | | | | - Josivan Gomes de Lima
- Hospital Universitário Onofre Lopes da Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN - Brasil
| | | | | | - Miguel Antonio Moretti
- Instituto do Coração (Incor) do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (HCFMUSP), São Paulo, SP - Brasil
| | | | | | - Renan Magalhães Montenegro Junior
- Complexo Hospitalar da Universidade Federal do Ceará (UFCE), Empresa Brasileira de Serviços Hospitalares (EBSERH), Fortaleza, CE - Brasil
| | - Renato Jorge Alves
- Hospital Santa Casa de Misericórdia de São Paulo, São Paulo, SP - Brasil
| | - Roberta Marcondes Machado Figueiredo
- Hospital Israelita Albert Einstein (HIAE), São Paulo, SP - Brasil
- Faculdade Israelita de Ciências da Saúde Albert Einstein (FICSAE), São Paulo, SP - Brasil
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Qualitative development of the PROMIS Profile v1.0-Familial Chylomicronemia Syndrome (FCS) 28. Qual Life Res 2023; 32:605-614. [PMID: 36310187 PMCID: PMC9618409 DOI: 10.1007/s11136-022-03266-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/30/2022] [Indexed: 11/11/2022]
Abstract
PURPOSE Familial chylomicronemia syndrome (FCS) is a rare genetic disorder characterized by high triglyceride levels, significant disease burden, and negative impacts on health-related quality of life. This project aimed to create a PROMIS-based patient-reported outcome measure that represents valid and important concerns for patients with FCS. METHODS We reviewed the literature and data from a previous qualitative study of FCS to identify key FCS symptoms and impacts, which were mapped to PROMIS domains to create a pool of eligible items. Candidate items were reduced per expert feedback and patients with FCS completed cognitive interviews to confirm content validity and measure content. RESULTS Literature and qualitative data review identified ten key symptoms and 12 key impacts of FCS, including abdominal pain, fatigue, difficulty thinking, and worry about pancreatitis attacks. We identified 96 items primarily from PROMIS, supplemented with items from the Quality of Life in Neurological Disorders™ (Neuro-QoL™) and the Functional Assessment of Chronic Illness Therapy (FACIT) measurement systems. This pool was reduced to 32 candidate items, which were assessed via cognitive interviews with eight participants with FCS. Cognitive interview results and additional expert feedback led to the removal of four items and finalization of the PROMIS Profile v1.0-familial chylomicronemia syndrome (FCS) 28. CONCLUSIONS The PROMIS Profile v1.0-familial chylomicronemia syndrome (FCS) 28 provides strong content validity for assessing quality of life among patients with FCS. The benefits of PROMIS, including norm-referenced mean values for each measure, will facilitate comparison of patients with FCS to other clinical populations.
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Oral EA, Garg A, Tami J, Huang EA, O'Dea LSL, Schmidt H, Tiulpakov A, Mertens A, Alexander VJ, Watts L, Hurh E, Witztum JL, Geary RS, Tsimikas S. Assessment of efficacy and safety of volanesorsen for treatment of metabolic complications in patients with familial partial lipodystrophy: Results of the BROADEN study: Volanesorsen in FPLD; The BROADEN Study. J Clin Lipidol 2022; 16:833-849. [PMID: 36402670 DOI: 10.1016/j.jacl.2022.08.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 08/15/2022] [Accepted: 08/31/2022] [Indexed: 01/11/2023]
Abstract
BACKGROUND Volanesorsen, an antisense oligonucleotide, is designed to inhibit hepatic apolipoprotein C-III synthesis and reduce plasma apolipoprotein C-III and triglyceride concentrations. OBJECTIVE The present study assessed efficacy and safety of volanesorsen in patients with familial partial lipodystrophy (FPLD) and concomitant hypertriglyceridemia and diabetes. METHODS BROADEN was a randomized, placebo-controlled, phase 2/3, 52-week study with open-label extension and post-treatment follow-up periods. Patients received weekly subcutaneous volanesorsen 300 mg or placebo. The primary endpoint was percent change from baseline in fasting triglycerides at 3 months. Secondary endpoints included relative percent change in hepatic fat fraction (HFF), visceral adiposity, and glycated hemoglobin levels. RESULTS Forty patients (11 men, 29 women) were enrolled, majority of whom were aged <65 years (mean, 47 years) and White. Least squares mean (LSM) percent change in triglycerides from baseline to 3 months was -88% (95% CI, -134 to -43) in the volanesorsen group versus -22% (95% CI, -61 to 18) in the placebo group, with a difference in LSM of -67% (95% CI, -104 to -30; P=0.0009). Volanesorsen induced a significant LSM relative reduction in HFF of 53% at month 12 versus placebo (observed mean [SD]: 9.7 [7.65] vs. 18.0 [8.89]; P=0.0039). No statistically significant changes were noted in body volume measurements (fat, liver, spleen, visceral/subcutaneous adipose tissue) or glycated hemoglobin. Serious adverse events in patients assigned to volanesorsen included 1 case each of sarcoidosis, anaphylactic reaction, and systemic inflammatory response syndrome. CONCLUSION In BROADEN, volanesorsen significantly reduced serum triglyceride levels and hepatic steatosis in patients with FPLD.
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Affiliation(s)
- Elif A Oral
- Metabolism, Endocrinology and Diabetes Division and Brehm Center for Diabetes, University of Michigan, Ann Arbor, MI, USA (Dr Oral).
| | - Abhimanyu Garg
- Division of Nutrition and Metabolic Diseases, Department of Internal Medicine, Center for Human Nutrition, University of Texas Southwestern Medical Center, Dallas, TX, USA (Dr Garg)
| | - Joseph Tami
- Ionis Pharmaceuticals, Carlsbad, CA, USA (Drs Tami, Alexander, Watts, Geary, and Tsimikas)
| | - Eric A Huang
- Akcea Therapeutics, Inc., Boston, MA, USA (Drs Huang, O'Dea, and Hurh)
| | - Louis St L O'Dea
- Akcea Therapeutics, Inc., Boston, MA, USA (Drs Huang, O'Dea, and Hurh)
| | - Hartmut Schmidt
- University Hospital Muenster, Muenster, Germany (Dr Schmidt)
| | - Anatoly Tiulpakov
- Endocrinology Research Centre, Moscow, Russian Federation (Dr Tiulpakov)
| | - Ann Mertens
- Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism, and Ageing, KU Leuven, Leuven, Belgium (Dr Mertens)
| | - Veronica J Alexander
- Ionis Pharmaceuticals, Carlsbad, CA, USA (Drs Tami, Alexander, Watts, Geary, and Tsimikas)
| | - Lynnetta Watts
- Ionis Pharmaceuticals, Carlsbad, CA, USA (Drs Tami, Alexander, Watts, Geary, and Tsimikas)
| | - Eunju Hurh
- Akcea Therapeutics, Inc., Boston, MA, USA (Drs Huang, O'Dea, and Hurh)
| | - Joseph L Witztum
- School of Medicine, University of California San Diego, San Diego, CA, USA (Drs Witztum and Tsimikas)
| | - Richard S Geary
- Ionis Pharmaceuticals, Carlsbad, CA, USA (Drs Tami, Alexander, Watts, Geary, and Tsimikas)
| | - Sotirios Tsimikas
- Ionis Pharmaceuticals, Carlsbad, CA, USA (Drs Tami, Alexander, Watts, Geary, and Tsimikas); School of Medicine, University of California San Diego, San Diego, CA, USA (Drs Witztum and Tsimikas)
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15
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Shi H, Wang Z. Novel pathogenic variant combination in LPL causing familial chylomicronemia syndrome in an Asian family and experimental validation in vitro: a case report. Transl Pediatr 2022; 11:1717-1725. [PMID: 36345447 PMCID: PMC9636460 DOI: 10.21037/tp-22-15] [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: 01/09/2022] [Accepted: 08/12/2022] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Familial chylomicronemia syndrome (FCS) is a rare autosomal recessive disorder, typically caused by biallelic pathogenic variants in the lipoprotein lipase (LPL) gene. Lipoprotein lipase, encoded by the LPL gene, catalyzes the hydrolysis of triglycerides, and its deficiency or dysfunction can lead to chylomicronemia and potentially fatal recurrent acute pancreatitis. CASE DESCRIPTION Here, we report an Asian child with FCS due to compound heterozygous LPL variants. The 4-year-old patient presented with splenomegaly and severe hypertriglyceridemia, specifically chylomicronemia which resulted in abnormal coagulation measured by a turbidity-based assay. Based on the clinical features and family history, the diagnosis of FCS was suspected, and confirmed by the identification of compound heterozygous variants in the LPL gene (c.461A>G; p.His154Arg and c.788T>A; p.Leu263Gln) in the patient, inheriting one from each parent. According to the clinical and genetic findings, the patient was diagnosed with FCS. In vitro experimental validation found that the LPL p.H154R variant reduced the expression of lipoprotein lipase and decreased its lipolytic activity, while the LPL p.L263Q variant mainly impaired its lipolytic activity. CONCLUSIONS FCS was molecularly diagnosed using whole exome sequencing in the case presented. When interpreting abnormal coagulation profiles measured by turbidity-based assay, the possibility of lipemic blood (or chylomicronemia) should be considered and the presence of this phenomenon might indicate the diagnosis of FCS. In vitro experiments showed that the two LPL variants impaired lipoprotein lipase expression and/or function making them likely to be pathogenic.
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Affiliation(s)
- Huiping Shi
- MOH Key Lab of Thrombosis and Hemostasis, Jiangsu Institute of Hematology, the First Affiliated Hospital of Soochow University, Suzhou, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - Zhaoyue Wang
- MOH Key Lab of Thrombosis and Hemostasis, Jiangsu Institute of Hematology, the First Affiliated Hospital of Soochow University, Suzhou, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
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16
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Ayoub C, Azar Y, Maddah D, Ghaleb Y, Elbitar S, Abou-Khalil Y, Jambart S, Varret M, Boileau C, El Khoury P, Abifadel M. Low circulating PCSK9 levels in LPL homozygous children with chylomicronemia syndrome in a syrian refugee family in Lebanon. Front Genet 2022; 13:961028. [PMID: 36061186 PMCID: PMC9437297 DOI: 10.3389/fgene.2022.961028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 07/26/2022] [Indexed: 12/17/2022] Open
Abstract
Familial chylomicronemia syndrome is a rare autosomal recessive disorder of lipoprotein metabolism characterized by the presence of chylomicrons in fasting plasma and an important increase in plasma triglycerides (TG) levels that can exceed 22.58 mmol/l. The disease is associated with recurrent episodes of abdominal pain and pancreatitis, eruptive cutaneous xanthomatosis, lipemia retinalis, and hepatosplenomegaly. A consanguineous Syrian family who migrated to Lebanon was referred to our laboratory after perceiving familial chylomicronemia syndrome in two children. The LPL and PCSK9 genes were sequenced and plasma PCSK9 levels were measured. Sanger sequencing of the LPL gene revealed the presence of the p.(Val227Phe) pathogenic variant in exon 5 at the homozygous state in the two affected children, and at the heterozygous state in the other recruited family members. Interestingly, PCSK9 levels in homozygous carriers of the p.(Val227Phe) were ≈50% lower than those in heterozygous carriers of the variant (p-value = 0.13) and ranged between the 5th and the 7.5th percentile of PCSK9 levels in a sample of Lebanese children of approximately the same age group. Moreover, this is the first reported case of individuals carrying simultaneously an LPL pathogenic variant and PCSK9 variants, the L10 and L11 leucine insertion, which can lower and raise low-density lipoprotein cholesterol (LDL-C) levels respectively. TG levels fluctuated concomitantly between the two children, were especially high following the migration from a country to another, and were reduced under a low-fat diet. This case is crucial to raise public awareness on the risks of consanguineous marriages to decrease the emergence of inherited autosomal recessive diseases. It also highlights the importance of the early diagnosis and management of these diseases to prevent serious complications, such as recurrent pancreatitis in the case of familial hyperchylomicronemia.
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Affiliation(s)
- Carine Ayoub
- Laboratory of Biochemistry and Molecular Therapeutics (LBTM), Faculty of Pharmacy, Pôle Technologie- Santé, Saint Joseph University of Beirut, Beirut, Lebanon
| | - Yara Azar
- Laboratory of Biochemistry and Molecular Therapeutics (LBTM), Faculty of Pharmacy, Pôle Technologie- Santé, Saint Joseph University of Beirut, Beirut, Lebanon
- Laboratory for Vascular Translational Science (LVTS), INSERM, Paris Cité University and Sorbonne Paris Nord University, Paris, France
| | - Dina Maddah
- Faculty of Medicine, Saint Joseph University of Beirut, Beirut, Lebanon
| | - Youmna Ghaleb
- Laboratory of Biochemistry and Molecular Therapeutics (LBTM), Faculty of Pharmacy, Pôle Technologie- Santé, Saint Joseph University of Beirut, Beirut, Lebanon
- Laboratory for Vascular Translational Science (LVTS), INSERM, Paris Cité University and Sorbonne Paris Nord University, Paris, France
| | - Sandy Elbitar
- Laboratory of Biochemistry and Molecular Therapeutics (LBTM), Faculty of Pharmacy, Pôle Technologie- Santé, Saint Joseph University of Beirut, Beirut, Lebanon
- Laboratory for Vascular Translational Science (LVTS), INSERM, Paris Cité University and Sorbonne Paris Nord University, Paris, France
| | - Yara Abou-Khalil
- Laboratory of Biochemistry and Molecular Therapeutics (LBTM), Faculty of Pharmacy, Pôle Technologie- Santé, Saint Joseph University of Beirut, Beirut, Lebanon
- Laboratory for Vascular Translational Science (LVTS), INSERM, Paris Cité University and Sorbonne Paris Nord University, Paris, France
| | - Selim Jambart
- Faculty of Medicine, Saint Joseph University of Beirut, Beirut, Lebanon
| | - Mathilde Varret
- Laboratory for Vascular Translational Science (LVTS), INSERM, Paris Cité University and Sorbonne Paris Nord University, Paris, France
| | - Catherine Boileau
- Laboratory for Vascular Translational Science (LVTS), INSERM, Paris Cité University and Sorbonne Paris Nord University, Paris, France
- Genetic Department, AP-HP, Hôpital Bichat, Paris, France
| | - Petra El Khoury
- Laboratory of Biochemistry and Molecular Therapeutics (LBTM), Faculty of Pharmacy, Pôle Technologie- Santé, Saint Joseph University of Beirut, Beirut, Lebanon
- Laboratory for Vascular Translational Science (LVTS), INSERM, Paris Cité University and Sorbonne Paris Nord University, Paris, France
| | - Marianne Abifadel
- Laboratory of Biochemistry and Molecular Therapeutics (LBTM), Faculty of Pharmacy, Pôle Technologie- Santé, Saint Joseph University of Beirut, Beirut, Lebanon
- Laboratory for Vascular Translational Science (LVTS), INSERM, Paris Cité University and Sorbonne Paris Nord University, Paris, France
- *Correspondence: Marianne Abifadel,
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Cheng Y, Li T, Tan P, Du Y, Huang Z, Shi H, Cai T, Chen Y, Fu W. Efficacy and safety of the apolipoprotein C-III inhibitor Volanesorsen: a systematic evaluation and meta-analysis. Endocrine 2022; 76:253-262. [PMID: 35298785 DOI: 10.1007/s12020-022-03025-8] [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: 12/27/2021] [Accepted: 02/19/2022] [Indexed: 11/28/2022]
Abstract
PURPOSE Familial celiac disease syndrome (FCS) is a form of hypertriglyceridemia (HTG) caused by the accumulation of celiac particles. Currently, volanesorsen is considered to be used to treat patients with FCS and HTG to improve symptoms. To evaluate the effect of volanesorsen on lipid metabolism in patients with FCS, we performed a systematic evaluation and meta-analysis. METHODS A systematic search of PubMed, Embase, ClinicalTrials.gov, and the Cochrane Library was conducted, and the bibliographies of original articles were checked manually. The quality of the studies was assessed using the Cochrane Risk of Bias tool. RESULTS Four randomized, controlled trials involving 246 patients were analyzed in this study. Patients treated with volanesorsen showed (MD = -78.85%; 95% CI = -96.04 to -61.65, P = 0.67, I2 = 0%) decrease in TG and (MD = -80.08%; 95% CI = -90.02 to -71.54, P = 0.25, I2 = 29%) decrease in ApoC-III levels compared to patients in the placebo group showing a significant decrease. In addition, HDL-C increased (MD = 46.01% 95% CI = 41.03 to 50.99, P = 0.41, I2 = 0%), NHDL-C decreased (MD = -32.12%; 95% CI = -44.39 to -19.85, P = 0.11, I2 = 55%), VLDL-C decreased (MD = -65.88%; 95% CI = -83.97 to -47.79, P = 0.71, I2 = 0%), apo A1 increased (MD = 13.12%; 95% CI = 7.83 to 18.40, P = 0.72, I2 = 0%), and apoB increased (MD = 7.94 %; 95% CI = -1.90 to 17.78, P = 0.54, I2 = 0%) all suggest that volanesorsen has an overall FCS with a therapeutic effect. However, LDL-C increased (MD = 99.59%; 95% CI = 69.19 to 130.00, P = 0.61, I2 = 0%) and apo B48 decreased (MD = 82.89%; 95% CI = -100.88 to -64.91, P = 0.42, I2 = 0%), showing an inverse effect, suggesting that volanesorsen's did not target all proteins of lipid metabolism.
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Affiliation(s)
- Yonglang Cheng
- Department of General Surgery (Hepatobiliary Surgery), The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Tongxi Li
- Department of General Surgery (Hepatobiliary Surgery), The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Peng Tan
- Academician (Expert) Workstation of Sichuan Province, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Yichao Du
- Academician (Expert) Workstation of Sichuan Province, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Zhiwei Huang
- Department of General Surgery (Hepatobiliary Surgery), The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Hao Shi
- Department of General Surgery (Hepatobiliary Surgery), The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Tianying Cai
- Department of General Surgery (Hepatobiliary Surgery), The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Yifan Chen
- Department of General Surgery (Hepatobiliary Surgery), The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Wenguang Fu
- Department of General Surgery (Hepatobiliary Surgery), The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China.
- Academician (Expert) Workstation of Sichuan Province, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China.
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18
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Aguilar-Salinas CA, Gómez-Díaz RA, Corral P. New Therapies for Primary Hyperlipidemia. J Clin Endocrinol Metab 2022; 107:1216-1224. [PMID: 34888679 DOI: 10.1210/clinem/dgab876] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Indexed: 11/19/2022]
Abstract
Primary hyperlipidemias include a heterogeneous set of monogenic and polygenic conditions characterized by a strong family aggregation, severe forms of hypercholesterolemia and/or hypertriglyceridemia, appearance early on life, and a high risk of cardiovascular events and/or recurrent pancreatitis. In real life, a small proportion of the primary hyperlipidemia cases is recognized and treated properly. Our goal is to present an update of current and upcoming therapies for patients with primary hyperlipidemia. Recently, new lipid-lowering medications have obtained authorization from the U.S. Food and Drug Administration and the European Medicines Agency. These drugs target metabolic pathways, including (adenosine 5'-triphosphates)-citrate lyase (bempedoic acid), proprotein convertase subtilisin/kexin 9 (inclisiran), apolipoprotein CIII (volanesorsen), and angiopoietin-like 3 (volanesorsen), that have additive effects with the actions of the currently available therapies (i.e., statins, ezetimibe or fibrates). We discuss the potential clinical indications for the novel medications. To conclude, the addition of these new medications to the therapeutic options for primary hyperlipidemia patients may increase the likelihood of achieving the treatment targets. Also, it could be a safer alternative for patients with side effects for the currently available drugs.
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Affiliation(s)
- Carlos A Aguilar-Salinas
- Direction of Nutrition Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Monterrey, México
| | - Rita A Gómez-Díaz
- Unidad de Investigación Médica en Epidemiología Clínica, UMAE Hospital de Especialidades, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social (IMSS), Mexico City, Mexico
| | - Pablo Corral
- Pharmacology Department, School of Medicine, FASTA University, Mar del Plata, Buenos Aires, Argentina
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Chan YH, Ramji DP. Atherosclerosis: Pathogenesis and Key Cellular Processes, Current and Emerging Therapies, Key Challenges, and Future Research Directions. Methods Mol Biol 2022; 2419:3-19. [PMID: 35237955 DOI: 10.1007/978-1-0716-1924-7_1] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Atherosclerosis is the principal cause of cardiovascular disease that continues to be a substantial drain on healthcare systems, being responsible for about 31% of all global deaths. Atherogenesis is influenced by a range of factors, including oxidative stress, inflammation, hypertension, and hyperlipidemia, and is ultimately driven by the accumulation of low-density lipoprotein cholesterol within the arterial wall of medium and large arteries. Lipoprotein accumulation stimulates the infiltration of immune cells (such as monocytes/macrophages and T-lymphocytes), some of which take up the lipoprotein, leading to the formation of lipid-laden foam cells. Foam cell death results in increased accumulation of dead cells, cellular debris and extracellular cholesterol, forming a lipid-rich necrotic core. Vascular smooth muscle cells from the arterial media also migrate into the intima layer and proliferate, taking up the available lipids to become foam cells and producing extracellular matrix proteins such as collagen and elastin. Plaque progression is characterized by the formation of a fibrous cap composed of extracellular matrix proteins and smooth muscle cells, which acts to stabilize the atherosclerotic plaque. Degradation, thinning, and subsequent rupture of the fibrous cap leads to lumen-occlusive atherothrombosis, most commonly resulting in heart attack or stroke. This chapter describes the pathogenesis of atherosclerosis, current and emerging therapies, key challenges, and future directions of research.
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Affiliation(s)
- Yee-Hung Chan
- Cardiff School of Biosciences, Cardiff University, Cardiff, UK.
| | - Dipak P Ramji
- Cardiff School of Biosciences, Cardiff University, Cardiff, UK
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20
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Laufs U, Parhofer KG, Ginsberg HN, Hegele RA. Clinical review on triglycerides. Eur Heart J 2021; 41:99-109c. [PMID: 31764986 PMCID: PMC6938588 DOI: 10.1093/eurheartj/ehz785] [Citation(s) in RCA: 271] [Impact Index Per Article: 90.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 08/20/2019] [Accepted: 10/23/2019] [Indexed: 12/23/2022] Open
Abstract
Hypertriglyceridaemia is a common clinical problem. Epidemiologic and genetic studies have established that triglyceride-rich lipoproteins (TRL) and their remnants as important contributors to ASCVD while severe hypertriglyceridaemia raises risk of pancreatitis. While low-density lipoprotein is the primary treatment target for lipid lowering therapy, secondary targets that reflect the contribution of TRL such as apoB and non-HDL-C are recommended in the current guidelines. Reduction of severely elevated triglycerides is important to avert or reduce the risk of pancreatitis. Here we discuss interventions for hypertriglyceridaemia, including diet and lifestyle, established treatments such as fibrates and omega-3 fatty acid preparations and emerging therapies, including various biological agents. ![]()
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Affiliation(s)
- Ulrich Laufs
- Klinik und Poliklinik für Kardiologie, Universitätsklinikum Leipzig, Liebigstr. 20, Leipzig, Germany
| | - Klaus G Parhofer
- University Munich, Medical Department 4 - Grosshadern, Marchioninistr. 15, Munich, Germany
| | - Henry N Ginsberg
- Irving Institute for Clinical and Translational Medicine, Vagelos College of Physicians and Surgeons, Columbia University, 630 West 168th Street, New York, NY, USA
| | - Robert A Hegele
- Department of Medicine, Robarts Research Institute, Western University, London, Ontario, Canada
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21
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Muñiz-Grijalvo O, Diaz-Diaz JL. Familial chylomicronemia and multifactorial chylomicronemia. CLINICA E INVESTIGACION EN ARTERIOSCLEROSIS : PUBLICACION OFICIAL DE LA SOCIEDAD ESPANOLA DE ARTERIOSCLEROSIS 2021; 33 Suppl 2:56-62. [PMID: 34006355 DOI: 10.1016/j.arteri.2021.02.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 02/17/2021] [Indexed: 11/19/2022]
Abstract
The accumulation of chylomicrons in plasma beyond the postprandial period is a pathological event secondary to the partial or complete lack of activity of lipoprotein lipase that can lead to recurrent episodes of abdominal pain and acute pancreatitis. This article reviews the pathophysiology of this syndrome and the differential characteristics depending on whether it is due to congenital monogenic causes or acquired on a polygenic basis in which multiple factors may inluence.
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Affiliation(s)
| | - José Luis Diaz-Diaz
- Unidad de Lípidos, Servicio de Medicina interna, Complexo Hospitalario Universitario de A Coruña
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22
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Aslesh T, Yokota T. Development of Antisense Oligonucleotide Gapmers for the Treatment of Dyslipidemia and Lipodystrophy. Methods Mol Biol 2021; 2176:69-85. [PMID: 32865783 DOI: 10.1007/978-1-0716-0771-8_5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Although technological advances in molecular genetics over the last few decades have greatly expedited the identification of mutations in many genetic diseases, the translation of the genetic mechanisms into a clinical setting has been quite challenging, with a minimum number of effective treatments available. The advancements in antisense therapy have revolutionized the field of neuromuscular disorders as well as lipid-mediated diseases. With the approval of splice-switching antisense oligonucleotide (AO) therapy for nusinersen and eteplirsen for the treatment of spinal muscular atrophy (SMA) and Duchenne muscular dystrophy (DMD), several modified AOs are now being evaluated in clinical trials for the treatment of a number of disorders. In order to activate RNase H-mediated cleavage of the target mRNA, as well as to increase the binding affinity and specificity, gapmer AOs are designed that have a PS backbone flanked with the modified AOs on both sides. Mipomersen (trade name Kynamro), a 2'-O-methoxyethyl (MOE) gapmer, was approved by the Food and Drug Administration (FDA) for the treatment of homozygous familial hypercholesterolemia (HoFH) in 2013. Volanesorsen, another 20-mer MOE gapmer has shown to be successful in lowering the levels of triglycerides (TGs) in several lipid disorders and has received conditional approval in the European Union for the treatment of Familial chylomicronemia syndrome (FCS) in May 2019 following successful results from phase II/III clinical trials. This chapter focuses on the clinical applications of gapmer AOs for genetic dyslipidemia and lipodystrophy.
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Affiliation(s)
- Tejal Aslesh
- Neuroscience and Mental Health Institute, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada.,Department of Medical Genetics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Toshifumi Yokota
- Department of Medical Genetics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada. .,The Friends of Garrett Cumming Research and Muscular Dystrophy Canada HM Toupin Neurological Science Research Chair, Edmonton, AB, Canada.
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23
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Dib I, Khalil A, Chouaib R, El-Makhour Y, Noureddine H. Apolipoprotein C-III and cardiovascular diseases: when genetics meet molecular pathologies. Mol Biol Rep 2021; 48:875-886. [PMID: 33389539 PMCID: PMC7778846 DOI: 10.1007/s11033-020-06071-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 12/05/2020] [Indexed: 01/31/2023]
Abstract
Cardiovascular diseases (CVD) have overtaken infectious diseases and are currently the world's top killer. A quite strong linkage between this type of ailments and elevated plasma levels of triglycerides (TG) has been always noticed. Notably, this risk factor is mired in deep confusion, since its role in atherosclerosis is uncertain. One of the explanations that aim to decipher this persistent enigma was provided by apolipoprotein C-III (apoC-III), a small protein historically recognized as an important regulator of TG metabolism. Preeminently, hundreds of studies have been carried out in order to explore the APOC3 genetic background, as well as to establish a correlation between its variants and dyslipidemia-related disorders, pointing to an earnest predictive power for future outcomes. Among several polymorphisms reported within the APOC3, the SstI site in its 3'-untranslated region (3'-UTR) was the most consistently and robustly associated with an increased CVD risk. As more genetic data supporting its importance in cardiovascular events aggregate, it was declared, correspondingly, that apoC-III exerts various atherogenic effects, either by intervening in the function and catabolism of many lipoproteins, or by inducing endothelial inflammation and smooth muscle cells (SMC) proliferation. This review was designed to shed the light on the structural and functional aspects of the APOC3 gene, the existing association between its SstI polymorphism and CVD, and the specific molecular mechanisms that underlie apoC-III pathological implications. In addition, the translation of all these gathered knowledges into preventive and therapeutic benefits will be detailed too.
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Affiliation(s)
- Israa Dib
- grid.411324.10000 0001 2324 3572Environmental Health Research Lab (EHRL), Faculty of Sciences V, Lebanese University, Nabatieh, Lebanon
| | - Alia Khalil
- grid.411324.10000 0001 2324 3572Environmental Health Research Lab (EHRL), Faculty of Sciences V, Lebanese University, Nabatieh, Lebanon
| | - Racha Chouaib
- grid.411324.10000 0001 2324 3572Environmental Health Research Lab (EHRL), Faculty of Sciences V, Lebanese University, Nabatieh, Lebanon
| | - Yolla El-Makhour
- grid.411324.10000 0001 2324 3572Environmental Health Research Lab (EHRL), Faculty of Sciences V, Lebanese University, Nabatieh, Lebanon
| | - Hiba Noureddine
- grid.411324.10000 0001 2324 3572Environmental Health Research Lab (EHRL), Faculty of Sciences V, Lebanese University, Nabatieh, Lebanon
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24
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Tripathi M, Wong A, Solomon V, Yassine HN. THE PREVALENCE OF PROBABLE FAMILIAL CHYLOMICRONEMIA SYNDROME IN A SOUTHERN CALIFORNIA POPULATION. Endocr Pract 2020; 27:71-76. [PMID: 33475504 DOI: 10.4158/ep-2020-0135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
OBJECTIVE To estimate the prevalence of probable familial chylomicronemia syndrome (FCS) in a major Southern California Academic Center as well as to provide a systematic review of past FCS studies and management recommendations. METHODS Electronic medical records were queried based on single fasting plasma triglyceride (TG) levels of ≥880 mg/dL and at least 1 episode of acute pancreatitis. After the exclusion of secondary causes (diabetes, alcohol misuse, gallbladder disease, chronic kidney disease, uncontrolled hypothyroidism, estrogen, and drug use) and responses to lipid-lowering treatment, probable patients with FCS were identified. A systematic review of all published literature on the prevalence and management guidelines for FCS was then presented and discussed. RESULTS Out of 7 699 288 charts queried, 138 patients with TG levels of ≥880 mg/dL and documented evidence of at least 1 episode of acute pancreatitis were identified. Nine patients did not have any documented secondary causes of chylomicronemia. Four of the 9 patients had >20% decrease in TG levels after lipid-lowering treatment, 2 patients were not responsive to lipid-lowering medication, and data on lipid-lowering medications were missing in 3 patients. CONCLUSION Our study estimates the prevalence of probable FCS at a range of 0.26 to 0.66 per million. Using the recommended criteria, probable FCS cases can be identified to allow early diagnosis and management.
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Affiliation(s)
- Mrinali Tripathi
- Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - April Wong
- Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Victoria Solomon
- Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Hussein N Yassine
- Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California.
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25
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Jia X, Liu J, Mehta A, Ballantyne CM, Virani SS. Lipid-Lowering Biotechnological Drugs: from Monoclonal Antibodies to Antisense Therapies-a Clinical Perspective. Cardiovasc Drugs Ther 2020; 35:1269-1279. [PMID: 32997212 DOI: 10.1007/s10557-020-07082-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/16/2020] [Indexed: 12/12/2022]
Abstract
PURPOSE While low density lipoprotein cholesterol (LDL-C) remains a key contributor of atherosclerotic cardiovascular disease (ASCVD), additional risk factors identified through epidemiological and genetic studies have ushered in a fertile era of drug discovery in lipid-lowering therapy. Unlike contemporary small molecule medications, many of the novel agents are biologics utilizing monoclonal antibody (mAb) or RNA interference (RNAi) technologies. This report aims to review the evidence to date, focusing on completed and ongoing clinical trials and how these new agents will impact clinical practice. METHODS We review data from pertinent studies on lipid-lowering biologics in clinical use or have translated to human studies and are undergoing clinical trials. RESULTS Several targets affecting lipid metabolism have been identified to be causally associated with ASCVD including proprotein convertase subtilisin/kexin type 9 (PCSK9), angiopoietin-like protein 3 (ANGPTL3), apolipoprotein C3 (APOC3), and lipoprotein (a) (Lp[a]). Biotechnological modalities that have been developed for these targets include mAb, small interfering RNA (siRNA), and anti-sense oligonucleotide (ASO) agents. Agents such as alirocumab and evolocumab have shown efficacy in risk reduction of ASCVD in cardiovascular outcome trials and have been incorporated into evidence-based practice guidelines. Other agents included in this review are in various stages of clinical trials and have shown significant efficacy in the reduction of lipid parameters. CONCLUSION The development of new biologics targeting lipid risk factors will provide clinicians additional tools to reduce the risk for ASCVD. Important factors to consider will be cost-effectiveness and improving methods to personalize treatments to risk factors.
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Affiliation(s)
- Xiaoming Jia
- Section of Cardiology, Baylor College of Medicine, Houston, TX, USA
| | - Jing Liu
- Section of Cardiology, Baylor College of Medicine, Houston, TX, USA
| | - Anurag Mehta
- Division of Cardiology, Emory University School of Medicine, Atlanta, GA, USA
| | | | - Salim S Virani
- Section of Cardiology, Baylor College of Medicine, Houston, TX, USA.
- Section of Cardiology, Michael E. DeBakey Veterans Affairs Medical Center, Houston, TX, USA.
- Health Policy, Quality & Informatics Program, Health Services Research and Development Center for Innovations, Michael E. DeBakey Veterans Affairs Medical Center, 2002 Holcombe Boulevard, Houston, TX, 77030, USA.
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26
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Antisense drug discovery and development technology considered in a pharmacological context. Biochem Pharmacol 2020; 189:114196. [PMID: 32800852 DOI: 10.1016/j.bcp.2020.114196] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 08/07/2020] [Accepted: 08/10/2020] [Indexed: 02/06/2023]
Abstract
When coined, the term "antisense" included oligonucleotides of any structure, with any chemical modification and designed to work through any post-RNA hybridization mechanism. However, in practice the term "antisense" has been used to describe single stranded oligonucleotides (ss ASOs) designed to hybridize to RNAswhile the term "siRNA" has come to mean double stranded oligonucleotides designed to activate Ago2. However, the two approaches share many common features. The medicinal chemistry developed for ASOs greatly facilitated the development of siRNA technology and remains the chemical basis for both approaches. Many of challenges faced and solutions achieved share many common features. In fact, because ss ASOs can be designed to activate Ago2, the two approaches intersect at this remarkably important protein. There are also meaningful differences. The pharmacokinetic properties are quite different and thus potential routes of delivery differ. ASOs may be designedto use a variety of post-RNA binding mechanismswhile siRNAs depend solely on the robust activity of Ago2. However, siRNAs and ASOs are both used for therapeutic purposes and both must be and can be understood in a pharmacological context. Thus, the goals of this review are to put ASOs in pharmacological context and compare their behavior as pharmacological agents to the those of siRNAs.
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27
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Parhofer KG, Laufs U. The Diagnosis and Treatment of Hypertriglyceridemia. DEUTSCHES ARZTEBLATT INTERNATIONAL 2020; 116:825-832. [PMID: 31888796 DOI: 10.3238/arztebl.2019.0825] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 03/06/2019] [Accepted: 09/23/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND Hypertriglyceridemia affects 15-20% of the adult population and is associated with overweight, metabolic syndrome, and diabetes mellitus. It is often discovered incidentally. METHODS This review is based on pertinent publications retrieved by a selective literature search, including current guidelines on hypertriglyceridemia. RESULTS Elevated triglyceride (TG) levels are causally linked to cardiovascular disease; TG levels above 1000 mg/dL (11.4 mmol/L) can induce acute pancreatitis. The individual risk of cardiovascular disease and of pancreatitis must be estimated in order to decide whether, and how, hypertriglyceridemia should be treated. Lifestyle modifications (cessation of alcohol consumption, reduced intake of rapidly metabolized carbohydrates), weight loss, and blood sugar control are the most effective ways to lower TG levels. The need to lower the low-density lipoprotein (LDL) concentration must be determined on the basis of the cardiovascular risk, independently of the success of the lifestyle changes. Few patients need specific drug treatment to lower the TG level. Fibrates can lower TG concentrations, but their efficacy in combination with statins has not been clearly shown in endpoint studies. A daily dose of 2-4 g omega-3 fatty acids can also lower TG levels. To date, only a single large-scale randomized, blinded trial has shown the efficacy of 4 g of eicosapentaenoic acid ethyl ester per day in lowering the risk in high-risk patients (number needed to treat = 21). Patients with the very rare purely genetic types of hypertriglyceridemia (familial chylomicronemia syndrome) should be treated in specialized outpatient clinics. CONCLUSION Hypertriglyceridemia is causally linked to cardiovascular disease and pancreatitis. Lifestyle modifications play a paramount role in its treatment.
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Affiliation(s)
- Klaus G Parhofer
- Medical Department IV, Campus Grosshadern, Medical Center of the University of Munich, Munich, Germany; Department of Cardiology, University Hospital of Leipzig, Leipzig, Germany
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28
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Esan O, Wierzbicki AS. Volanesorsen in the Treatment of Familial Chylomicronemia Syndrome or Hypertriglyceridaemia: Design, Development and Place in Therapy. DRUG DESIGN DEVELOPMENT AND THERAPY 2020; 14:2623-2636. [PMID: 32753844 PMCID: PMC7351689 DOI: 10.2147/dddt.s224771] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 06/18/2020] [Indexed: 02/04/2023]
Abstract
Severe hypertriglyceridaemia is associated with pancreatitis and chronic pancreatitis-induced diabetes. Familial chylomicronaemia syndrome (FCS) is a rare autosomal recessive disorder of lipid metabolism characterised by high levels of triglycerides (TGs) due to failure of chylomicron clearance. It causes repeated episodes of severe abdominal pain, fatigue and attacks of acute pancreatitis. There are few current options for its long-term management. The only universal long-term therapy is restriction of total dietary fat intake to <10-15% of daily calories (15 to 20g per day). Many patients have been treated with fibrates and statins with a variable response, but many remain susceptible to pancreatitis. Other genetic syndromes associated with hypertriglyceridaemia include familial partial lipodystrophy (FPLD). Targeting apolipoprotein C3 (apoC3) offers the ability to increase clearance of chylomicrons and other triglyceride-rich lipoproteins. Volanesorsen is an antisense oligonucleotide (ASO) inhibitor of apoC3, which reduces TG levels by 70–80% which has been shown also to reduce rates of pancreatitis and improve well-being in FCS and reduce TGs and improve insulin resistance in FPLD. It is now undergoing licensing and payer reviews. Further developments of antisense technology including small interfering RNA therapy to apoC3 as well as other approaches to modulating triglycerides are in development for this rare disorder.
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Affiliation(s)
- Oluwayemisi Esan
- Department of Metabolic Medicine/Chemical Pathology, Guy's & St Thomas' Hospitals, London SE1 7EH, UK
| | - Anthony S Wierzbicki
- Department of Metabolic Medicine/Chemical Pathology, Guy's & St Thomas' Hospitals, London SE1 7EH, UK
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29
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Fox RS, Peipert JD, Vera-Llonch M, Phillips G, Cella D. PROMIS® and Neuro-QoL TM measures are valid measures of health-related quality of life among patients with familial chylomicronemia syndrome. Expert Rev Cardiovasc Ther 2020; 18:231-238. [PMID: 32223345 DOI: 10.1080/14779072.2020.1748011] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Background: FCS significantly affects health-related quality of life (HRQOL). Legacy patient-reported outcome measures are often not sensitive to FCS's impact. NIH PROMIS and Neuro-QoL measures may accurately capture HRQOL in FCS patients. This study assessed a broad range of PROMIS and Neuro-QoL measures covering physical, mental, and social HRQOL to determine their suitability for the FCS population.Methods: Adult FCS patients in the United States (N = 25) were recruited to an online survey study and completed several PROMIS short forms and Neuro-QoL computer adaptive tests.Results: Scores were more than 0.5 standard deviations (SD) worse than the normative mean on 10 of 16 normed measures, and more than 0.75 SDs worse than the normative mean on two measures. Responses at the floor and ceiling were occasionally observed, marginal reliabilities were strong, and significant differences across performance status (ps < 0.05) provided preliminary support for construct validity. The measures correlated with each other strongly and as expected.Conclusion: Results support the ability of PROMIS and Neuro-QoL measures to detect HRQOL impairment among patients with FCS. PROMIS and Neuro-QoL measures captured the functional impact and symptom burden associated with FCS, and the broad range of symptom severity experienced by patients with FCS.
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Affiliation(s)
- Rina S Fox
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - John Devin Peipert
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Montserrat Vera-Llonch
- Department of Global Health Economics and Outcomes Research, Akcea Therapeutics, Cambridge, MA, USA
| | - Glenn Phillips
- Department of Value and Evidence Generation, Rhythm Pharmaceuticals, Boston, MA, USA
| | - David Cella
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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30
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Baass A, Paquette M, Bernard S, Hegele RA. Familial chylomicronemia syndrome: an under-recognized cause of severe hypertriglyceridaemia. J Intern Med 2020; 287:340-348. [PMID: 31840878 DOI: 10.1111/joim.13016] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Familial chylomicronemia syndrome (FCS) is a rare autosomal recessive disorder of chylomicron metabolism causing severe elevation of triglyceride (TG) levels (>10 mmol L-1 ). This condition is associated with a significant risk of recurrent acute pancreatitis (AP). AP caused by hypertriglyceridaemia (HTG) has been associated with a worse prognosis and higher mortality rates compared to pancreatitis of other aetiology. Despite its association with poor quality of life and increased lifelong risk of HTG-AP, few healthcare providers are familiar with FCS. Because this condition is under-recognized, the majority of FCS patients are diagnosed after age 20 often after consulting several physicians. Although other forms of severe HTG such as multifactorial chylomicronemia have been associated with high atherosclerotic cardiovascular disease (ASCVD) risk and metabolic abnormalities, ASCVD and metabolic syndrome are not usually observed in FCS patients. Because FCS is a genetic condition, the optimal diagnosis strategy remains genetic testing. The presence of bi-allelic pathogenic mutations in LPL, APOC2, GPIHBP1, APOA5 or LMF1 genes confirms the diagnosis. However, some cases of FCS caused by autoantibodies against LPL or GPIHBP1 proteins have also been reported. Furthermore, a clinical score for the diagnosis of FCS has been proposed but needs further validation. Available treatment options to lower triglycerides such as fibrates or omega-3 fatty acids are not efficacious in FCS patients. Currently, the cornerstone of treatment remains a lifelong very low-fat diet, which prevents the formation of chylomicrons. Finally, inhibitors of apo C-III and ANGPTL3 are in development and may eventually constitute additional treatment options for FCS patients.
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Affiliation(s)
- A Baass
- From the, Lipids, Nutrition and Cardiovascular Prevention Clinic, Montreal Clinical Research Institute, Québec, Canada.,Divisions of Experimental Medicine and Medical Biochemistry, Department of Medicine, McGill University, Québec, Canada
| | - M Paquette
- From the, Lipids, Nutrition and Cardiovascular Prevention Clinic, Montreal Clinical Research Institute, Québec, Canada
| | - S Bernard
- From the, Lipids, Nutrition and Cardiovascular Prevention Clinic, Montreal Clinical Research Institute, Québec, Canada.,Division of Endocrinology, Department of Medicine, Université de Montreal, Montreal, Canada
| | - R A Hegele
- Department of Medicine, University of Western Ontario and Robarts Research Institute, Ontario, Canada
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31
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Rhainds D, Brodeur MR, Tardif JC. Investigational drugs in development for hypertriglyceridemia: a coming-of-age story. Expert Opin Investig Drugs 2019; 28:1059-1079. [PMID: 31752565 DOI: 10.1080/13543784.2019.1696772] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Introduction: Elevated triglyceride (TG) level is a prevalent condition in the general population and in patients with cardiovascular (CV) risk even under statin therapy. Severe hypertriglyceridemia (HTG) puts patients at risk for acute pancreatitis. Several TG-lowering drugs failed in clinical trials, but subgroup analyses suggest that high-risk patients, such as those with atherogenic dyslipidemia or diabetes, benefit from TG lowering.Areas covered: We review advances for TG-lowering drugs in clinical development. These include selective PPARα modulators, omega-3 fatty acid formulations that have been approved for severe HTG, and inhibitors of apolipoprotein C-III, angiopoietin-like-3 or microsomal transfer protein. Lessons learned from the success of the phase 3 trial REDUCE-IT with high-dose icosapent ethyl are also reviewed.Expert opinion: We believe that TG-lowering therapies are coming of age as they will allow to treat patients with high CV risk and moderate HTG, including T2D subjects, as well as patients with severe HTG or even homozygous familial hypercholesterolemia, all of which being 'optimally' treated with a statin. More studies on the impact of therapy on quality of life in patients with severe HTG should be conducted with the help of patient registries.
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Affiliation(s)
- David Rhainds
- Montreal Heart Institute Research Center, Montreal Heart Institute, Montreal, Canada
| | - Mathieu R Brodeur
- Montreal Heart Institute Research Center, Montreal Heart Institute, Montreal, Canada
| | - Jean-Claude Tardif
- Montreal Heart Institute Research Center, Montreal Heart Institute, Montreal, Canada.,Faculty of Medicine, Université de Montréal, Montreal, Canada
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32
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Garg A, Garg V, Hegele RA, Lewis GF. Practical definitions of severe versus familial hypercholesterolaemia and hypertriglyceridaemia for adult clinical practice. Lancet Diabetes Endocrinol 2019; 7:880-886. [PMID: 31445954 DOI: 10.1016/s2213-8587(19)30156-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 04/08/2019] [Accepted: 04/09/2019] [Indexed: 12/20/2022]
Abstract
Diagnostic scoring systems for familial hypercholesterolaemia and familial chylomicronaemia syndrome often cannot differentiate between adults who have extreme dyslipidaemia based on a simple monogenic cause versus people with a more complex cause involving polygenic factors and an environmental component. This more complex group of patients carries a substantial risk of atherosclerotic cardiovascular disease in the case of marked hypercholesterolaemia and pancreatitis in the case of marked hypertriglyceridaemia. Complications are mainly a function of the degree of disturbance in lipid metabolism resulting in elevated lipid levels, so the added value of knowing the precise genetic cause in clinical decision making is unclear and does not lead to clinically meaningful benefit. We propose that for severe elevations of plasma low density lipoprotein cholesterol or triglyceride, the primary factor driving intervention should be the biochemical perturbation rather than the clinical risk score. This underscores the importance of expanding the definition of severe dyslipidaemias and to not rely solely on clinical scoring systems to identify individuals who would benefit from appropriate treatment approaches. We advocate for the use of simple, practical, clinical, and largely biochemically based definitions for severe hypercholesterolaemia (eg, LDL cholesterol >5 mmol/L) and severe hypertriglyceridaemia (triglyceride >10 mmol/L), which complement current definitions of familial hypercholesterolaemia and familial chylomicronaemia syndrome. Irrespective of the precise genetic cause, individuals diagnosed with severe hypercholesterolaemia and severe hypertriglyceridaemia require intensive therapy, including special consideration for new effective but more expensive therapies.
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Affiliation(s)
- Ankit Garg
- Departments of Medicine and Physiology, Division of Endocrinology and Metabolism, Banting and Best Diabetes Centre, University of Toronto, Toronto, ON, Canada
| | - Vinay Garg
- Departments of Medicine and Physiology, Division of Endocrinology and Metabolism, Banting and Best Diabetes Centre, University of Toronto, Toronto, ON, Canada
| | - Robert A Hegele
- Robarts Research Institute, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada
| | - Gary F Lewis
- Departments of Medicine and Physiology, Division of Endocrinology and Metabolism, Banting and Best Diabetes Centre, University of Toronto, Toronto, ON, Canada.
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33
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O'Dea LSL, MacDougall J, Alexander VJ, Digenio A, Hubbard B, Arca M, Moriarty PM, Kastelein JJP, Bruckert E, Soran H, Witztum JL, Hegele RA, Gaudet D. Differentiating Familial Chylomicronemia Syndrome From Multifactorial Severe Hypertriglyceridemia by Clinical Profiles. J Endocr Soc 2019; 3:2397-2410. [PMID: 31777768 PMCID: PMC6864364 DOI: 10.1210/js.2019-00214] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 10/07/2019] [Indexed: 12/21/2022] Open
Abstract
Context Differentiation between familial chylomicronemia syndrome (FCS, type 1 hyperlipoproteinemia), a rare metabolic disorder, and the more common multifactorial severe hypertriglyceridemia (sHTG, type 5 hyperlipoproteinemia) is challenging because of their overlapping symptoms but important in patient management. Objective To assess whether readily obtainable clinical information beyond triglycerides can effectively diagnose and differentiate patients with FCS from those with sHTG, based on well-curated data from two intervention studies of these conditions. Methods The analysis included 154 patients from two phase 3 clinical trials of patients with sHTG, one cohort with genetically confirmed FCS (n = 49) and one with multifactorial sHTG (n = 105). Logistic regression analyses were performed to determine the ability of variables (patient demographics, medical history, and baseline lipids, individually or in sets) to differentiate the patient populations. Receiver operating characteristics were used to determine the variable sets with the highest accuracy (percentage of times actual values matched predicted) and optimal sensitivity and specificity. Results The primary model diagnosed 45 of 49 patients with FCS and 99 of 105 patients with sHTG correctly. Optimal sensitivity for all available parameters (n = 17) was 91.8%, optimal specificity was 94.3%, and accuracy was 93.5%. Fasting low-density lipoprotein cholesterol (LDL-C) provided the highest individual predictability. However, a three-variable set of ultracentrifugally measured LDL-C, body mass index, and pancreatitis history differentiated the diseases with a near similar accuracy of 91.0%, and adding high-density lipoprotein cholesterol and very low-density lipoprotein cholesterol for a five-variable set provided a small incremental increase in accuracy (92.2%). Conclusions In the absence of genetic testing, hypertriglyceridemic patients with FCS and sHTG can be differentiated with a high degree of accuracy by analyzing readily obtainable clinical information.
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Affiliation(s)
| | | | | | | | | | - Marcello Arca
- Department of Internal Medicine and Medical Specialties, Sapienza University of Rome, Rome, Italy
| | - Patrick M Moriarty
- Department of Medicine, Division of Clinical Pharmacology, University of Kansas Medical Center, Kansas City, Kansas
| | - John J P Kastelein
- Department of Vascular Medicine, Academic Medical Center, University of Amsterdam, AZ Amsterdam, Netherlands
| | - Eric Bruckert
- Institut E3M et IHU Cardiométabolique, Hôpital Pitié-Salpêtrière, Paris, France
| | - Handrean Soran
- Manchester University Hospital NHS Trust, Manchester, England
| | | | - Robert A Hegele
- Robarts Research Institute, Western University, London, Ontario, Canada
| | - Daniel Gaudet
- Department of Medicine, Université de Montréal and ECOGENE 21, Chicoutimi, Quebec, Canada
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34
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Fitts E, Lee PDK, Yates SG. Efficacy of therapeutic plasma exchange in reducing the incidence of recurrent pancreatitis related to familial chylomicronemia. Transfusion 2019; 59:3324-3328. [DOI: 10.1111/trf.15532] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 08/04/2019] [Accepted: 08/22/2019] [Indexed: 01/01/2023]
Affiliation(s)
- Eric Fitts
- Department of Pathology, Division of Transfusion Medicine University of Texas Medical Branch Galveston Texas
| | - Phillip D. K. Lee
- Department of Pediatrics, Division of Pediatric Endocrinology University of Texas Medical Branch Galveston Texas
| | - Sean G. Yates
- Department of Pathology, Division of Transfusion Medicine University of Texas Medical Branch Galveston Texas
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35
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Zhang Y, He W, He C, Wan J, Lin X, Zheng X, Li L, Li X, Yang X, Yu B, Xian X, Zhu Y, Wang Y, Liu G, Lu N. Large triglyceride-rich lipoproteins in hypertriglyceridemia are associated with the severity of acute pancreatitis in experimental mice. Cell Death Dis 2019; 10:728. [PMID: 31570698 PMCID: PMC6768872 DOI: 10.1038/s41419-019-1969-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 08/20/2019] [Accepted: 08/26/2019] [Indexed: 02/07/2023]
Abstract
Hypertriglyceridemia severity is linked to acute pancreatitis prognosis, but it remains unknown why a portion of severe hypertriglyceridemia patients do not develop severe acute pancreatitis. To investigate whether hypertriglyceridemia subtypes affect acute pancreatitis progression, we analyzed two genetically modified hypertriglyceridemia mouse models—namely, glycosylphosphatidylinositol high-density lipoprotein binding protein 1 knockout (Gpihbp1−/−) and apolipoprotein C3 transgenic (ApoC3-tg) mice. Acute pancreatitis was induced by 10 intraperitoneal caerulein injections. Biochemical assays and pathological analysis were performed for the severity evaluation of acute pancreatitis. Plasma triglyceride-rich lipoproteins (TRLs), including chylomicrons and very low-density lipoprotein (VLDL), were collected via ultracentrifugation to evaluate their cytotoxic effects on primary pancreatic acinar cells (PACs). We found that the particle sizes of Gpihbp1−/− TRLs were larger than ApoC3-tg TRLs. Severe pancreatic injury with large areas of pancreatic necrosis in the entire lobule was induced in Gpihbp1−/− mice when plasma triglyceride levels were greater than 2000 mg/dL. However, ApoC3-tg mice with the same triglyceride levels did not develop large areas of pancreatic necrosis, even upon the administration of poloxamer 407 to further increase triglyceride levels. Meanwhile, in the acute pancreatitis model, free fatty acids (FFAs) in the pancreas of Gpihbp1−/− mice were greater than in ApoC3-tg mice. TRLs from Gpihbp1−/− mice released more FFAs and were more toxic to PACs than those from ApoC3-tg mice. Chylomicrons from patients showed the same effects on PACs as TRLs from Gpihbp1−/− mice. Gpihbp1−/− mice with triglyceride levels below 2000 mg/dL had milder pancreatic injury and less incidence of pancreatic necrosis than those with triglyceride levels above 2000 mg/dL, similar to Gpihbp1−/−mice with triglyceride levels above 2000 mg/dL but with fenofibrate administration. These findings demonstrated that hypertriglyceridemia subtypes with large TRL particles could affect acute pancreatitis progression and that chylomicrons showed more cytotoxicity than VLDL by releasing more FFAs.
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Affiliation(s)
- Yue Zhang
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, 330006, Nanchang, China
| | - Wenhua He
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, 330006, Nanchang, China
| | - Cong He
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, 330006, Nanchang, China
| | - Jianhua Wan
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, 330006, Nanchang, China
| | - Xiao Lin
- Institute of Cardiovascular Sciences, Peking University Health Science Center, 100191, Beijing, China.,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, 100191, Beijing, China
| | - Xi Zheng
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, 330006, Nanchang, China
| | - Lei Li
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, 330006, Nanchang, China
| | - Xueyang Li
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, 330006, Nanchang, China
| | - Xiaoyu Yang
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, 330006, Nanchang, China
| | - Bingjun Yu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, 330006, Nanchang, China
| | - Xunde Xian
- Institute of Cardiovascular Sciences, Peking University Health Science Center, 100191, Beijing, China.,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, 100191, Beijing, China
| | - Yin Zhu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, 330006, Nanchang, China
| | - Yuhui Wang
- Institute of Cardiovascular Sciences, Peking University Health Science Center, 100191, Beijing, China. .,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, 100191, Beijing, China.
| | - George Liu
- Institute of Cardiovascular Sciences, Peking University Health Science Center, 100191, Beijing, China.,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, 100191, Beijing, China
| | - Nonghua Lu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, 330006, Nanchang, China.
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36
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Macchi C, Sirtori CR, Corsini A, Santos RD, Watts GF, Ruscica M. A new dawn for managing dyslipidemias: The era of rna-based therapies. Pharmacol Res 2019; 150:104413. [PMID: 31449975 DOI: 10.1016/j.phrs.2019.104413] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 08/08/2019] [Accepted: 08/22/2019] [Indexed: 12/24/2022]
Abstract
The high occurrence of atherosclerotic cardiovascular disease (ASCVD) events is still a major public health issue. Although a major determinant of ASCVD event reduction is the absolute change of low-density lipoprotein-cholesterol (LDL-C), considerable residual risk remains and new therapeutic options are required, in particular, to address triglyceride-rich lipoproteins and lipoprotein(a) [Lp(a)]. In the era of Genome Wide Association Studies and Mendelian Randomization analyses aimed at increasing the understanding of the pathophysiology of ASCVD, RNA-based therapies may offer more effective treatment options. The advantage of oligonucleotide-based treatments is that drug candidates are targeted at highly specific regions of RNA that code for proteins that in turn regulate lipid and lipoprotein metabolism. For LDL-C lowering, the use of inclisiran - a silencing RNA that inhibits proprotein convertase subtilisin/kexin type 9 (PCSK9) synthesis - has the advantage that a single s.c. injection lowers LDL-C for up to 6 months. In familial hypercholesterolemia, the use of the antisense oligonucleotide (ASO) mipomersen, targeting apolipoprotein (apoB) to reduce LDL-C, has been a valuable therapeutic approach, despite unquestionable safety concerns. The availability of specific ASOs lowering Lp(a) levels will allow rigorous testing of the Lp(a) hypothesis; by dramatically reducing plasma triglyceride levels, Volanesorsen (APOC3) and angiopoietin-like 3 (ANGPTL3)-LRx will further clarify the causality of triglyceride-rich lipoproteins in ASCVD. The rapid progress to date heralds a new dawn in therapeutic lipidology, but outcome, safety and cost-effectiveness studies are required to establish the role of these new agents in clinical practice.
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Affiliation(s)
- C Macchi
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - C R Sirtori
- Dyslipidemia Center, A.S.S.T. Grande Ospedale Metropolitano Niguarda, Milan, Italy
| | - A Corsini
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy; IRCCS Multimedica, Milan, Italy
| | - R D Santos
- Lipid Clinic, Heart Institute (InCor), University of Sao Paulo, Brazil; Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - G F Watts
- School of Medicine, Faculty of Health and Medical Sciences, University of Western Australia, Perth, Australia; Lipid Disorders Clinic, Cardiometabolic Services, Department of Cardiology, Royal Perth Hospital, Australia.
| | - M Ruscica
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
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37
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Witztum JL, Gaudet D, Freedman SD, Alexander VJ, Digenio A, Williams KR, Yang Q, Hughes SG, Geary RS, Arca M, Stroes ESG, Bergeron J, Soran H, Civeira F, Hemphill L, Tsimikas S, Blom DJ, O'Dea L, Bruckert E. Volanesorsen and Triglyceride Levels in Familial Chylomicronemia Syndrome. N Engl J Med 2019; 381:531-542. [PMID: 31390500 DOI: 10.1056/nejmoa1715944] [Citation(s) in RCA: 331] [Impact Index Per Article: 66.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Familial chylomicronemia syndrome is a rare genetic disorder that is caused by loss of lipoprotein lipase activity and characterized by chylomicronemia and recurrent episodes of pancreatitis. There are no effective therapies. In an open-label study of three patients with this syndrome, antisense-mediated inhibition of hepatic APOC3 mRNA with volanesorsen led to decreased plasma apolipoprotein C-III and triglyceride levels. METHODS We conducted a phase 3, double-blind, randomized 52-week trial to evaluate the safety and effectiveness of volanesorsen in 66 patients with familial chylomicronemia syndrome. Patients were randomly assigned, in a 1:1 ratio, to receive volanesorsen or placebo. The primary end point was the percentage change in fasting triglyceride levels from baseline to 3 months. RESULTS Patients receiving volanesorsen had a decrease in mean plasma apolipoprotein C-III levels from baseline of 25.7 mg per deciliter, corresponding to an 84% decrease at 3 months, whereas patients receiving placebo had an increase in mean plasma apolipoprotein C-III levels from baseline of 1.9 mg per deciliter, corresponding to a 6.1% increase (P<0.001). Patients receiving volanesorsen had a 77% decrease in mean triglyceride levels, corresponding to a mean decrease of 1712 mg per deciliter (19.3 mmol per liter) (95% confidence interval [CI], 1330 to 2094 mg per deciliter [15.0 to 23.6 mmol per liter]), whereas patients receiving placebo had an 18% increase in mean triglyceride levels, corresponding to an increase of 92.0 mg per deciliter (1.0 mmol per liter) (95% CI, -301.0 to 486 mg per deciliter [-3.4 to 5.5 mmol per liter]) (P<0.001). At 3 months, 77% of the patients in the volanesorsen group, as compared with 10% of patients in the placebo group, had triglyceride levels of less than 750 mg per deciliter (8.5 mmol per liter). A total of 20 of 33 patients who received volanesorsen had injection-site reactions, whereas none of the patients who received placebo had such reactions. No patients in the placebo group had platelet counts below 100,000 per microliter, whereas 15 of 33 patients in the volanesorsen group had such levels, including 2 who had levels below 25,000 per microliter. No patient had platelet counts below 50,000 per microliter after enhanced platelet-monitoring began. CONCLUSIONS Volanesorsen lowered triglyceride levels to less than 750 mg per deciliter in 77% of patients with familial chylomicronemia syndrome. Thrombocytopenia and injection-site reactions were common adverse events. (Funded by Ionis Pharmaceuticals and Akcea Therapeutics; APPROACH Clinical Trials.gov number, NCT02211209.).
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Affiliation(s)
- Joseph L Witztum
- From the Department of Medicine, University of California San Diego, La Jolla (J.L.W., S.T.), and Ionis Pharmaceuticals, Carlsbad (V.J.A., Q.Y., S.G.H., R.S.G., S.T.) - both in California; the Department of Medicine, Université de Montréal and ECOGENE 21, Chicoutimi, QC (D.G.), and the Department of Medicine and Laboratory Medicine, Centre Hospitalier Universitaire de Québec-University Laval, Quebec, QC (J.B.) - both in Canada; the Department of Medicine, Beth Israel Deaconess Medical Center (S.D.F.), and the Department of Medicine, Massachusetts General Hospital (L.H.), Boston, and Akcea Therapeutics, Cambridge (A.D., K.R.W., L.O.) - all in Massachusetts; Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome (M.A.); Academic Medical Center, Department of Vascular Medicine, Amsterdam (E.S.G.S.); the Department of Medicine, Manchester University Hospital NHS Foundation Trust, Manchester, United Kingdom (H.S.); the Department of Internal Medicine, Hospital Universitario Miguel Servet, IIS Aragón, Universidad de Zaragoza, Zaragoza, Spain (F.C.); the Division of Lipidology and Hatter Institute for Cardiovascular Research in Africa, University of Cape Town, Cape Town, South Africa (D.J.B.); and the Department of Endocrinology and Cardiovascular Disease Prevention, Assistance Publique-Hôpitaux de Paris, La Pitié-Salpêtrière Hospital, Institut de Création et d'Animation Numériques, Paris (E.B.)
| | - Daniel Gaudet
- From the Department of Medicine, University of California San Diego, La Jolla (J.L.W., S.T.), and Ionis Pharmaceuticals, Carlsbad (V.J.A., Q.Y., S.G.H., R.S.G., S.T.) - both in California; the Department of Medicine, Université de Montréal and ECOGENE 21, Chicoutimi, QC (D.G.), and the Department of Medicine and Laboratory Medicine, Centre Hospitalier Universitaire de Québec-University Laval, Quebec, QC (J.B.) - both in Canada; the Department of Medicine, Beth Israel Deaconess Medical Center (S.D.F.), and the Department of Medicine, Massachusetts General Hospital (L.H.), Boston, and Akcea Therapeutics, Cambridge (A.D., K.R.W., L.O.) - all in Massachusetts; Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome (M.A.); Academic Medical Center, Department of Vascular Medicine, Amsterdam (E.S.G.S.); the Department of Medicine, Manchester University Hospital NHS Foundation Trust, Manchester, United Kingdom (H.S.); the Department of Internal Medicine, Hospital Universitario Miguel Servet, IIS Aragón, Universidad de Zaragoza, Zaragoza, Spain (F.C.); the Division of Lipidology and Hatter Institute for Cardiovascular Research in Africa, University of Cape Town, Cape Town, South Africa (D.J.B.); and the Department of Endocrinology and Cardiovascular Disease Prevention, Assistance Publique-Hôpitaux de Paris, La Pitié-Salpêtrière Hospital, Institut de Création et d'Animation Numériques, Paris (E.B.)
| | - Steven D Freedman
- From the Department of Medicine, University of California San Diego, La Jolla (J.L.W., S.T.), and Ionis Pharmaceuticals, Carlsbad (V.J.A., Q.Y., S.G.H., R.S.G., S.T.) - both in California; the Department of Medicine, Université de Montréal and ECOGENE 21, Chicoutimi, QC (D.G.), and the Department of Medicine and Laboratory Medicine, Centre Hospitalier Universitaire de Québec-University Laval, Quebec, QC (J.B.) - both in Canada; the Department of Medicine, Beth Israel Deaconess Medical Center (S.D.F.), and the Department of Medicine, Massachusetts General Hospital (L.H.), Boston, and Akcea Therapeutics, Cambridge (A.D., K.R.W., L.O.) - all in Massachusetts; Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome (M.A.); Academic Medical Center, Department of Vascular Medicine, Amsterdam (E.S.G.S.); the Department of Medicine, Manchester University Hospital NHS Foundation Trust, Manchester, United Kingdom (H.S.); the Department of Internal Medicine, Hospital Universitario Miguel Servet, IIS Aragón, Universidad de Zaragoza, Zaragoza, Spain (F.C.); the Division of Lipidology and Hatter Institute for Cardiovascular Research in Africa, University of Cape Town, Cape Town, South Africa (D.J.B.); and the Department of Endocrinology and Cardiovascular Disease Prevention, Assistance Publique-Hôpitaux de Paris, La Pitié-Salpêtrière Hospital, Institut de Création et d'Animation Numériques, Paris (E.B.)
| | - Veronica J Alexander
- From the Department of Medicine, University of California San Diego, La Jolla (J.L.W., S.T.), and Ionis Pharmaceuticals, Carlsbad (V.J.A., Q.Y., S.G.H., R.S.G., S.T.) - both in California; the Department of Medicine, Université de Montréal and ECOGENE 21, Chicoutimi, QC (D.G.), and the Department of Medicine and Laboratory Medicine, Centre Hospitalier Universitaire de Québec-University Laval, Quebec, QC (J.B.) - both in Canada; the Department of Medicine, Beth Israel Deaconess Medical Center (S.D.F.), and the Department of Medicine, Massachusetts General Hospital (L.H.), Boston, and Akcea Therapeutics, Cambridge (A.D., K.R.W., L.O.) - all in Massachusetts; Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome (M.A.); Academic Medical Center, Department of Vascular Medicine, Amsterdam (E.S.G.S.); the Department of Medicine, Manchester University Hospital NHS Foundation Trust, Manchester, United Kingdom (H.S.); the Department of Internal Medicine, Hospital Universitario Miguel Servet, IIS Aragón, Universidad de Zaragoza, Zaragoza, Spain (F.C.); the Division of Lipidology and Hatter Institute for Cardiovascular Research in Africa, University of Cape Town, Cape Town, South Africa (D.J.B.); and the Department of Endocrinology and Cardiovascular Disease Prevention, Assistance Publique-Hôpitaux de Paris, La Pitié-Salpêtrière Hospital, Institut de Création et d'Animation Numériques, Paris (E.B.)
| | - Andres Digenio
- From the Department of Medicine, University of California San Diego, La Jolla (J.L.W., S.T.), and Ionis Pharmaceuticals, Carlsbad (V.J.A., Q.Y., S.G.H., R.S.G., S.T.) - both in California; the Department of Medicine, Université de Montréal and ECOGENE 21, Chicoutimi, QC (D.G.), and the Department of Medicine and Laboratory Medicine, Centre Hospitalier Universitaire de Québec-University Laval, Quebec, QC (J.B.) - both in Canada; the Department of Medicine, Beth Israel Deaconess Medical Center (S.D.F.), and the Department of Medicine, Massachusetts General Hospital (L.H.), Boston, and Akcea Therapeutics, Cambridge (A.D., K.R.W., L.O.) - all in Massachusetts; Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome (M.A.); Academic Medical Center, Department of Vascular Medicine, Amsterdam (E.S.G.S.); the Department of Medicine, Manchester University Hospital NHS Foundation Trust, Manchester, United Kingdom (H.S.); the Department of Internal Medicine, Hospital Universitario Miguel Servet, IIS Aragón, Universidad de Zaragoza, Zaragoza, Spain (F.C.); the Division of Lipidology and Hatter Institute for Cardiovascular Research in Africa, University of Cape Town, Cape Town, South Africa (D.J.B.); and the Department of Endocrinology and Cardiovascular Disease Prevention, Assistance Publique-Hôpitaux de Paris, La Pitié-Salpêtrière Hospital, Institut de Création et d'Animation Numériques, Paris (E.B.)
| | - Karren R Williams
- From the Department of Medicine, University of California San Diego, La Jolla (J.L.W., S.T.), and Ionis Pharmaceuticals, Carlsbad (V.J.A., Q.Y., S.G.H., R.S.G., S.T.) - both in California; the Department of Medicine, Université de Montréal and ECOGENE 21, Chicoutimi, QC (D.G.), and the Department of Medicine and Laboratory Medicine, Centre Hospitalier Universitaire de Québec-University Laval, Quebec, QC (J.B.) - both in Canada; the Department of Medicine, Beth Israel Deaconess Medical Center (S.D.F.), and the Department of Medicine, Massachusetts General Hospital (L.H.), Boston, and Akcea Therapeutics, Cambridge (A.D., K.R.W., L.O.) - all in Massachusetts; Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome (M.A.); Academic Medical Center, Department of Vascular Medicine, Amsterdam (E.S.G.S.); the Department of Medicine, Manchester University Hospital NHS Foundation Trust, Manchester, United Kingdom (H.S.); the Department of Internal Medicine, Hospital Universitario Miguel Servet, IIS Aragón, Universidad de Zaragoza, Zaragoza, Spain (F.C.); the Division of Lipidology and Hatter Institute for Cardiovascular Research in Africa, University of Cape Town, Cape Town, South Africa (D.J.B.); and the Department of Endocrinology and Cardiovascular Disease Prevention, Assistance Publique-Hôpitaux de Paris, La Pitié-Salpêtrière Hospital, Institut de Création et d'Animation Numériques, Paris (E.B.)
| | - Qingqing Yang
- From the Department of Medicine, University of California San Diego, La Jolla (J.L.W., S.T.), and Ionis Pharmaceuticals, Carlsbad (V.J.A., Q.Y., S.G.H., R.S.G., S.T.) - both in California; the Department of Medicine, Université de Montréal and ECOGENE 21, Chicoutimi, QC (D.G.), and the Department of Medicine and Laboratory Medicine, Centre Hospitalier Universitaire de Québec-University Laval, Quebec, QC (J.B.) - both in Canada; the Department of Medicine, Beth Israel Deaconess Medical Center (S.D.F.), and the Department of Medicine, Massachusetts General Hospital (L.H.), Boston, and Akcea Therapeutics, Cambridge (A.D., K.R.W., L.O.) - all in Massachusetts; Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome (M.A.); Academic Medical Center, Department of Vascular Medicine, Amsterdam (E.S.G.S.); the Department of Medicine, Manchester University Hospital NHS Foundation Trust, Manchester, United Kingdom (H.S.); the Department of Internal Medicine, Hospital Universitario Miguel Servet, IIS Aragón, Universidad de Zaragoza, Zaragoza, Spain (F.C.); the Division of Lipidology and Hatter Institute for Cardiovascular Research in Africa, University of Cape Town, Cape Town, South Africa (D.J.B.); and the Department of Endocrinology and Cardiovascular Disease Prevention, Assistance Publique-Hôpitaux de Paris, La Pitié-Salpêtrière Hospital, Institut de Création et d'Animation Numériques, Paris (E.B.)
| | - Steven G Hughes
- From the Department of Medicine, University of California San Diego, La Jolla (J.L.W., S.T.), and Ionis Pharmaceuticals, Carlsbad (V.J.A., Q.Y., S.G.H., R.S.G., S.T.) - both in California; the Department of Medicine, Université de Montréal and ECOGENE 21, Chicoutimi, QC (D.G.), and the Department of Medicine and Laboratory Medicine, Centre Hospitalier Universitaire de Québec-University Laval, Quebec, QC (J.B.) - both in Canada; the Department of Medicine, Beth Israel Deaconess Medical Center (S.D.F.), and the Department of Medicine, Massachusetts General Hospital (L.H.), Boston, and Akcea Therapeutics, Cambridge (A.D., K.R.W., L.O.) - all in Massachusetts; Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome (M.A.); Academic Medical Center, Department of Vascular Medicine, Amsterdam (E.S.G.S.); the Department of Medicine, Manchester University Hospital NHS Foundation Trust, Manchester, United Kingdom (H.S.); the Department of Internal Medicine, Hospital Universitario Miguel Servet, IIS Aragón, Universidad de Zaragoza, Zaragoza, Spain (F.C.); the Division of Lipidology and Hatter Institute for Cardiovascular Research in Africa, University of Cape Town, Cape Town, South Africa (D.J.B.); and the Department of Endocrinology and Cardiovascular Disease Prevention, Assistance Publique-Hôpitaux de Paris, La Pitié-Salpêtrière Hospital, Institut de Création et d'Animation Numériques, Paris (E.B.)
| | - Richard S Geary
- From the Department of Medicine, University of California San Diego, La Jolla (J.L.W., S.T.), and Ionis Pharmaceuticals, Carlsbad (V.J.A., Q.Y., S.G.H., R.S.G., S.T.) - both in California; the Department of Medicine, Université de Montréal and ECOGENE 21, Chicoutimi, QC (D.G.), and the Department of Medicine and Laboratory Medicine, Centre Hospitalier Universitaire de Québec-University Laval, Quebec, QC (J.B.) - both in Canada; the Department of Medicine, Beth Israel Deaconess Medical Center (S.D.F.), and the Department of Medicine, Massachusetts General Hospital (L.H.), Boston, and Akcea Therapeutics, Cambridge (A.D., K.R.W., L.O.) - all in Massachusetts; Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome (M.A.); Academic Medical Center, Department of Vascular Medicine, Amsterdam (E.S.G.S.); the Department of Medicine, Manchester University Hospital NHS Foundation Trust, Manchester, United Kingdom (H.S.); the Department of Internal Medicine, Hospital Universitario Miguel Servet, IIS Aragón, Universidad de Zaragoza, Zaragoza, Spain (F.C.); the Division of Lipidology and Hatter Institute for Cardiovascular Research in Africa, University of Cape Town, Cape Town, South Africa (D.J.B.); and the Department of Endocrinology and Cardiovascular Disease Prevention, Assistance Publique-Hôpitaux de Paris, La Pitié-Salpêtrière Hospital, Institut de Création et d'Animation Numériques, Paris (E.B.)
| | - Marcello Arca
- From the Department of Medicine, University of California San Diego, La Jolla (J.L.W., S.T.), and Ionis Pharmaceuticals, Carlsbad (V.J.A., Q.Y., S.G.H., R.S.G., S.T.) - both in California; the Department of Medicine, Université de Montréal and ECOGENE 21, Chicoutimi, QC (D.G.), and the Department of Medicine and Laboratory Medicine, Centre Hospitalier Universitaire de Québec-University Laval, Quebec, QC (J.B.) - both in Canada; the Department of Medicine, Beth Israel Deaconess Medical Center (S.D.F.), and the Department of Medicine, Massachusetts General Hospital (L.H.), Boston, and Akcea Therapeutics, Cambridge (A.D., K.R.W., L.O.) - all in Massachusetts; Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome (M.A.); Academic Medical Center, Department of Vascular Medicine, Amsterdam (E.S.G.S.); the Department of Medicine, Manchester University Hospital NHS Foundation Trust, Manchester, United Kingdom (H.S.); the Department of Internal Medicine, Hospital Universitario Miguel Servet, IIS Aragón, Universidad de Zaragoza, Zaragoza, Spain (F.C.); the Division of Lipidology and Hatter Institute for Cardiovascular Research in Africa, University of Cape Town, Cape Town, South Africa (D.J.B.); and the Department of Endocrinology and Cardiovascular Disease Prevention, Assistance Publique-Hôpitaux de Paris, La Pitié-Salpêtrière Hospital, Institut de Création et d'Animation Numériques, Paris (E.B.)
| | - Erik S G Stroes
- From the Department of Medicine, University of California San Diego, La Jolla (J.L.W., S.T.), and Ionis Pharmaceuticals, Carlsbad (V.J.A., Q.Y., S.G.H., R.S.G., S.T.) - both in California; the Department of Medicine, Université de Montréal and ECOGENE 21, Chicoutimi, QC (D.G.), and the Department of Medicine and Laboratory Medicine, Centre Hospitalier Universitaire de Québec-University Laval, Quebec, QC (J.B.) - both in Canada; the Department of Medicine, Beth Israel Deaconess Medical Center (S.D.F.), and the Department of Medicine, Massachusetts General Hospital (L.H.), Boston, and Akcea Therapeutics, Cambridge (A.D., K.R.W., L.O.) - all in Massachusetts; Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome (M.A.); Academic Medical Center, Department of Vascular Medicine, Amsterdam (E.S.G.S.); the Department of Medicine, Manchester University Hospital NHS Foundation Trust, Manchester, United Kingdom (H.S.); the Department of Internal Medicine, Hospital Universitario Miguel Servet, IIS Aragón, Universidad de Zaragoza, Zaragoza, Spain (F.C.); the Division of Lipidology and Hatter Institute for Cardiovascular Research in Africa, University of Cape Town, Cape Town, South Africa (D.J.B.); and the Department of Endocrinology and Cardiovascular Disease Prevention, Assistance Publique-Hôpitaux de Paris, La Pitié-Salpêtrière Hospital, Institut de Création et d'Animation Numériques, Paris (E.B.)
| | - Jean Bergeron
- From the Department of Medicine, University of California San Diego, La Jolla (J.L.W., S.T.), and Ionis Pharmaceuticals, Carlsbad (V.J.A., Q.Y., S.G.H., R.S.G., S.T.) - both in California; the Department of Medicine, Université de Montréal and ECOGENE 21, Chicoutimi, QC (D.G.), and the Department of Medicine and Laboratory Medicine, Centre Hospitalier Universitaire de Québec-University Laval, Quebec, QC (J.B.) - both in Canada; the Department of Medicine, Beth Israel Deaconess Medical Center (S.D.F.), and the Department of Medicine, Massachusetts General Hospital (L.H.), Boston, and Akcea Therapeutics, Cambridge (A.D., K.R.W., L.O.) - all in Massachusetts; Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome (M.A.); Academic Medical Center, Department of Vascular Medicine, Amsterdam (E.S.G.S.); the Department of Medicine, Manchester University Hospital NHS Foundation Trust, Manchester, United Kingdom (H.S.); the Department of Internal Medicine, Hospital Universitario Miguel Servet, IIS Aragón, Universidad de Zaragoza, Zaragoza, Spain (F.C.); the Division of Lipidology and Hatter Institute for Cardiovascular Research in Africa, University of Cape Town, Cape Town, South Africa (D.J.B.); and the Department of Endocrinology and Cardiovascular Disease Prevention, Assistance Publique-Hôpitaux de Paris, La Pitié-Salpêtrière Hospital, Institut de Création et d'Animation Numériques, Paris (E.B.)
| | - Handrean Soran
- From the Department of Medicine, University of California San Diego, La Jolla (J.L.W., S.T.), and Ionis Pharmaceuticals, Carlsbad (V.J.A., Q.Y., S.G.H., R.S.G., S.T.) - both in California; the Department of Medicine, Université de Montréal and ECOGENE 21, Chicoutimi, QC (D.G.), and the Department of Medicine and Laboratory Medicine, Centre Hospitalier Universitaire de Québec-University Laval, Quebec, QC (J.B.) - both in Canada; the Department of Medicine, Beth Israel Deaconess Medical Center (S.D.F.), and the Department of Medicine, Massachusetts General Hospital (L.H.), Boston, and Akcea Therapeutics, Cambridge (A.D., K.R.W., L.O.) - all in Massachusetts; Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome (M.A.); Academic Medical Center, Department of Vascular Medicine, Amsterdam (E.S.G.S.); the Department of Medicine, Manchester University Hospital NHS Foundation Trust, Manchester, United Kingdom (H.S.); the Department of Internal Medicine, Hospital Universitario Miguel Servet, IIS Aragón, Universidad de Zaragoza, Zaragoza, Spain (F.C.); the Division of Lipidology and Hatter Institute for Cardiovascular Research in Africa, University of Cape Town, Cape Town, South Africa (D.J.B.); and the Department of Endocrinology and Cardiovascular Disease Prevention, Assistance Publique-Hôpitaux de Paris, La Pitié-Salpêtrière Hospital, Institut de Création et d'Animation Numériques, Paris (E.B.)
| | - Fernando Civeira
- From the Department of Medicine, University of California San Diego, La Jolla (J.L.W., S.T.), and Ionis Pharmaceuticals, Carlsbad (V.J.A., Q.Y., S.G.H., R.S.G., S.T.) - both in California; the Department of Medicine, Université de Montréal and ECOGENE 21, Chicoutimi, QC (D.G.), and the Department of Medicine and Laboratory Medicine, Centre Hospitalier Universitaire de Québec-University Laval, Quebec, QC (J.B.) - both in Canada; the Department of Medicine, Beth Israel Deaconess Medical Center (S.D.F.), and the Department of Medicine, Massachusetts General Hospital (L.H.), Boston, and Akcea Therapeutics, Cambridge (A.D., K.R.W., L.O.) - all in Massachusetts; Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome (M.A.); Academic Medical Center, Department of Vascular Medicine, Amsterdam (E.S.G.S.); the Department of Medicine, Manchester University Hospital NHS Foundation Trust, Manchester, United Kingdom (H.S.); the Department of Internal Medicine, Hospital Universitario Miguel Servet, IIS Aragón, Universidad de Zaragoza, Zaragoza, Spain (F.C.); the Division of Lipidology and Hatter Institute for Cardiovascular Research in Africa, University of Cape Town, Cape Town, South Africa (D.J.B.); and the Department of Endocrinology and Cardiovascular Disease Prevention, Assistance Publique-Hôpitaux de Paris, La Pitié-Salpêtrière Hospital, Institut de Création et d'Animation Numériques, Paris (E.B.)
| | - Linda Hemphill
- From the Department of Medicine, University of California San Diego, La Jolla (J.L.W., S.T.), and Ionis Pharmaceuticals, Carlsbad (V.J.A., Q.Y., S.G.H., R.S.G., S.T.) - both in California; the Department of Medicine, Université de Montréal and ECOGENE 21, Chicoutimi, QC (D.G.), and the Department of Medicine and Laboratory Medicine, Centre Hospitalier Universitaire de Québec-University Laval, Quebec, QC (J.B.) - both in Canada; the Department of Medicine, Beth Israel Deaconess Medical Center (S.D.F.), and the Department of Medicine, Massachusetts General Hospital (L.H.), Boston, and Akcea Therapeutics, Cambridge (A.D., K.R.W., L.O.) - all in Massachusetts; Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome (M.A.); Academic Medical Center, Department of Vascular Medicine, Amsterdam (E.S.G.S.); the Department of Medicine, Manchester University Hospital NHS Foundation Trust, Manchester, United Kingdom (H.S.); the Department of Internal Medicine, Hospital Universitario Miguel Servet, IIS Aragón, Universidad de Zaragoza, Zaragoza, Spain (F.C.); the Division of Lipidology and Hatter Institute for Cardiovascular Research in Africa, University of Cape Town, Cape Town, South Africa (D.J.B.); and the Department of Endocrinology and Cardiovascular Disease Prevention, Assistance Publique-Hôpitaux de Paris, La Pitié-Salpêtrière Hospital, Institut de Création et d'Animation Numériques, Paris (E.B.)
| | - Sotirios Tsimikas
- From the Department of Medicine, University of California San Diego, La Jolla (J.L.W., S.T.), and Ionis Pharmaceuticals, Carlsbad (V.J.A., Q.Y., S.G.H., R.S.G., S.T.) - both in California; the Department of Medicine, Université de Montréal and ECOGENE 21, Chicoutimi, QC (D.G.), and the Department of Medicine and Laboratory Medicine, Centre Hospitalier Universitaire de Québec-University Laval, Quebec, QC (J.B.) - both in Canada; the Department of Medicine, Beth Israel Deaconess Medical Center (S.D.F.), and the Department of Medicine, Massachusetts General Hospital (L.H.), Boston, and Akcea Therapeutics, Cambridge (A.D., K.R.W., L.O.) - all in Massachusetts; Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome (M.A.); Academic Medical Center, Department of Vascular Medicine, Amsterdam (E.S.G.S.); the Department of Medicine, Manchester University Hospital NHS Foundation Trust, Manchester, United Kingdom (H.S.); the Department of Internal Medicine, Hospital Universitario Miguel Servet, IIS Aragón, Universidad de Zaragoza, Zaragoza, Spain (F.C.); the Division of Lipidology and Hatter Institute for Cardiovascular Research in Africa, University of Cape Town, Cape Town, South Africa (D.J.B.); and the Department of Endocrinology and Cardiovascular Disease Prevention, Assistance Publique-Hôpitaux de Paris, La Pitié-Salpêtrière Hospital, Institut de Création et d'Animation Numériques, Paris (E.B.)
| | - Dirk J Blom
- From the Department of Medicine, University of California San Diego, La Jolla (J.L.W., S.T.), and Ionis Pharmaceuticals, Carlsbad (V.J.A., Q.Y., S.G.H., R.S.G., S.T.) - both in California; the Department of Medicine, Université de Montréal and ECOGENE 21, Chicoutimi, QC (D.G.), and the Department of Medicine and Laboratory Medicine, Centre Hospitalier Universitaire de Québec-University Laval, Quebec, QC (J.B.) - both in Canada; the Department of Medicine, Beth Israel Deaconess Medical Center (S.D.F.), and the Department of Medicine, Massachusetts General Hospital (L.H.), Boston, and Akcea Therapeutics, Cambridge (A.D., K.R.W., L.O.) - all in Massachusetts; Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome (M.A.); Academic Medical Center, Department of Vascular Medicine, Amsterdam (E.S.G.S.); the Department of Medicine, Manchester University Hospital NHS Foundation Trust, Manchester, United Kingdom (H.S.); the Department of Internal Medicine, Hospital Universitario Miguel Servet, IIS Aragón, Universidad de Zaragoza, Zaragoza, Spain (F.C.); the Division of Lipidology and Hatter Institute for Cardiovascular Research in Africa, University of Cape Town, Cape Town, South Africa (D.J.B.); and the Department of Endocrinology and Cardiovascular Disease Prevention, Assistance Publique-Hôpitaux de Paris, La Pitié-Salpêtrière Hospital, Institut de Création et d'Animation Numériques, Paris (E.B.)
| | - Louis O'Dea
- From the Department of Medicine, University of California San Diego, La Jolla (J.L.W., S.T.), and Ionis Pharmaceuticals, Carlsbad (V.J.A., Q.Y., S.G.H., R.S.G., S.T.) - both in California; the Department of Medicine, Université de Montréal and ECOGENE 21, Chicoutimi, QC (D.G.), and the Department of Medicine and Laboratory Medicine, Centre Hospitalier Universitaire de Québec-University Laval, Quebec, QC (J.B.) - both in Canada; the Department of Medicine, Beth Israel Deaconess Medical Center (S.D.F.), and the Department of Medicine, Massachusetts General Hospital (L.H.), Boston, and Akcea Therapeutics, Cambridge (A.D., K.R.W., L.O.) - all in Massachusetts; Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome (M.A.); Academic Medical Center, Department of Vascular Medicine, Amsterdam (E.S.G.S.); the Department of Medicine, Manchester University Hospital NHS Foundation Trust, Manchester, United Kingdom (H.S.); the Department of Internal Medicine, Hospital Universitario Miguel Servet, IIS Aragón, Universidad de Zaragoza, Zaragoza, Spain (F.C.); the Division of Lipidology and Hatter Institute for Cardiovascular Research in Africa, University of Cape Town, Cape Town, South Africa (D.J.B.); and the Department of Endocrinology and Cardiovascular Disease Prevention, Assistance Publique-Hôpitaux de Paris, La Pitié-Salpêtrière Hospital, Institut de Création et d'Animation Numériques, Paris (E.B.)
| | - Eric Bruckert
- From the Department of Medicine, University of California San Diego, La Jolla (J.L.W., S.T.), and Ionis Pharmaceuticals, Carlsbad (V.J.A., Q.Y., S.G.H., R.S.G., S.T.) - both in California; the Department of Medicine, Université de Montréal and ECOGENE 21, Chicoutimi, QC (D.G.), and the Department of Medicine and Laboratory Medicine, Centre Hospitalier Universitaire de Québec-University Laval, Quebec, QC (J.B.) - both in Canada; the Department of Medicine, Beth Israel Deaconess Medical Center (S.D.F.), and the Department of Medicine, Massachusetts General Hospital (L.H.), Boston, and Akcea Therapeutics, Cambridge (A.D., K.R.W., L.O.) - all in Massachusetts; Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome (M.A.); Academic Medical Center, Department of Vascular Medicine, Amsterdam (E.S.G.S.); the Department of Medicine, Manchester University Hospital NHS Foundation Trust, Manchester, United Kingdom (H.S.); the Department of Internal Medicine, Hospital Universitario Miguel Servet, IIS Aragón, Universidad de Zaragoza, Zaragoza, Spain (F.C.); the Division of Lipidology and Hatter Institute for Cardiovascular Research in Africa, University of Cape Town, Cape Town, South Africa (D.J.B.); and the Department of Endocrinology and Cardiovascular Disease Prevention, Assistance Publique-Hôpitaux de Paris, La Pitié-Salpêtrière Hospital, Institut de Création et d'Animation Numériques, Paris (E.B.)
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Abstract
Purpose of Review Apolipoprotein C-III (apoC-III) is known to inhibit lipoprotein lipase (LPL) and function as an important regulator of triglyceride metabolism. In addition, apoC-III has also more recently been identified as an important risk factor for cardiovascular disease. This review summarizes the mechanisms by which apoC-III induces hypertriglyceridemia and promotes atherogenesis, as well as the findings from recent clinical trials using novel strategies for lowering apoC-III. Recent Findings Genetic studies have identified subjects with heterozygote loss-of-function (LOF) mutations in APOC3, the gene coding for apoC-III. Clinical characterization of these individuals shows that the LOF variants associate with a low-risk lipoprotein profile, in particular reduced plasma triglycerides. Recent results also show that complete deficiency of apoC-III is not a lethal mutation and is associated with very rapid lipolysis of plasma triglyceride-rich lipoproteins (TRL). Ongoing trials based on emerging gene-silencing technologies show that intervention markedly lowers apoC-III levels and, consequently, plasma triglyceride. Unexpectedly, the evidence points to apoC-III not only inhibiting LPL activity but also suppressing removal of TRLs by LPL-independent pathways. Summary Available data clearly show that apoC-III is an important cardiovascular risk factor and that lifelong deficiency of apoC-III is cardioprotective. Novel therapies have been developed, and results from recent clinical trials indicate that effective reduction of plasma triglycerides by inhibition of apoC-III might be a promising strategy in management of severe hypertriglyceridemia and, more generally, a novel approach to CHD prevention in those with elevated plasma triglyceride.
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Salvatore V, Gilstrap A, Williams KR, Thorat S, Stevenson M, Gwosdow AR, Hsieh A, Hubbard BC, Davidson D. Evaluating the impact of peer support and connection on the quality of life of patients with familial chylomicronemia syndrome. Expert Opin Orphan Drugs 2018. [DOI: 10.1080/21678707.2018.1505495] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Valerie Salvatore
- Department of Medical Affairs, Akcea Therapeutics, Inc, Cambridge, MA, USA
| | - Alan Gilstrap
- Department of Patient Advocacy, Akcea Therapeutics, Inc, Cambridge, MA, USA
| | - Karren R Williams
- Department of Medical Affairs, Akcea Therapeutics, Inc, Cambridge, MA, USA
| | - Swati Thorat
- Department of Medical Affairs, Akcea Therapeutics, Inc, Cambridge, MA, USA
| | - Michael Stevenson
- Department of Medical Affairs, Akcea Therapeutics, Inc, Cambridge, MA, USA
| | - Andrea R Gwosdow
- Department is Health Sciences and Medical Writing, Gwosdow Associates Science Consultants LLC, Arlington, MA, USA
| | - Andrew Hsieh
- Department of Medical Affairs, Akcea Therapeutics, Inc, Cambridge, MA, USA
| | - Brant C Hubbard
- Department of Medical Affairs, Akcea Therapeutics, Inc, Cambridge, MA, USA
| | - David Davidson
- Department of Medicine, Division of Cardiology, NorthShore University Health System, Bannockburn, IL, USA
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