genomic medicine: physician literacy in cardiology€¦ · 75% of all deaths in athletes is cardiac...
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GENOMIC MEDICINE: PHYSICIAN LITERACY IN CARDIOLOGY
William A. Zoghbi, MD, FACC President, The American College of Cardiology
and Robert Roberts, MD, MACC
President and CEO, University of Ottawa Heart Institute
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Overview: Four Important Areas
• Diseases of Particular Interest to CV Medicine • ACC – Personalized Medicine Survey • ACC CME and MoC Offerings • Future ACC Directions
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Diseases & Conditions of Particular Genetic/Genomic Interest in CV Medicine 1
• Mendelian CV Diseases – Hypertrophic Cardiomyopathy – Long QT Syndromes – Marfan Syndrome – Familial Dilated Cardiomyopathy – Factor V Leiden
• Complex Genetic Diseases – CAD, HTN – Atrial fibrillation
• Pharmacogenetics – Warfarin metabolism – Clopidogrel activation
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The Current Landscape of Personalized Medicine in Cardiology:
Providers and Patients Source: ACC’s CardioSurve panel
(Oct. 2010 survey of more than 150 cardiovascular professionals)
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ACC Personalized Medicine Survey – 2010 What is Personalized Medicine? 2
10%
45%
49%
52%
53%
56%
56%
72%
0% 10% 20% 30% 40% 50% 60% 70% 80%
Other
Socio-Economics
Co-Morbidity
Race
Molecular Diagnostics
Gender
Age
Genetic Testing
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ACC Personalized Medicine Survey - 2010 2
Percent of Patients Asking Cardiologists about Personalized Medicine
(n=144) 0% of patients 33%
1% - 5% of patients 37%
6% - 10% of patients 17%
11% - 20% of patients 8%
More than 20% of patients 5%
Mean % of patients 6%
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ACC Personalized Medicine Survey - 2010 2
Percent of Patients that Cardiologists are Using Personalized Medicine
(n=154) 0% of patients 29%
1% - 5% of patients 41%
6% - 10% of patients 14%
11% - 20% of patients 9%
More than 20% of patients 7%
Mean % of patients 7%
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Future Use of Personalized Medicine 2
27%
7%
66%
YesNoNot Sure
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Future Role of Personalized Medicine 2
0% 1%
5%
54%
40%
0%
10%
20%
30%
40%
50%
60%
Much Smaller Somewhat Smaller Same as Today Somewhat Larger Much Larger
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Challenges to Clinical Implementation of Personalized Medicine 2
0% 10% 20% 30% 40% 50% 60% 70% 80%
None
Other
Updates to Medical School Curriculum
Guidance from Regulatory Bodies
Patient Education
Guidance from Professional Societies
CME
Payment Reform
Patient Outcome Data
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January 28 2013 Presented by: Robert Roberts, MD, FRCPC, MACC, FRSM, Professor of Medicine President and CEO, University of Ottawa Heart Institute Director, Ruddy Canadian Cardiovascular Genetics Centre
Disclosure: Potential conflicts of interest have been resolved ▪ Cumberland Pharmaceuticals ▪ Celera Corporation
Importance of Genetics in Cardiovascular Medicine:
New Discoveries & Realities
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Inherited Causes of Sudden Cardiac Death
CARDIOMYOPATHIES ARRHYTHMIAS Hypertrophic Cardiomyopathy (HCM)
Long QT Syndrome (LQTS)
Arrhythmogenic Right Ventricular Cardiomyopathy (ARVC)
Short QT Syndrome
Dilated Cardiomyopathy (DCM) Catecholaminergic Polymorphic Ventricular Tachycardia (CPVT)
Coronary Artery Abnormalities Brugada Syndrome
Wolff-Parkinson-White (WPW) Syndrome
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Clinical Screening For HCM
≥12 years:
Family members should undergo physical examination
ECG and echo at 12 to 18 month intervals
18 to 20 years:
ECG and Echo every 5 years unless there is a clinical development
Screening of first degree relatives are encouraged
Maron BJ, McKenna WJ, Danielson G, et al. JACC 2003;42: 1687-713
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Clinical Considerations Screening for causes of sudden
cardiac death in the young
History and physical examination detects less than 1%
ECG exhibits abnormalities in over 80% of individuals with HCM, LQTS and WPW
High % of false-positives
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Role of Genetic Testing in Diagnosis of Cardiomyopathies
HCM Fabry’s Disease Amyloidosis Other metabolic causes
of hypertrophy
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Role of Genetic Testing in Long QT Syndrome
Long QTS-1 (Potassium Channel KV7.1) Long QTS-2 (Potassium Channel KV11.1) Long QTS-3 (Sodium Channel SCN5A)
35% 30% 10%
Therapy Beta Blockers Beta Blocker plus mexiletine,
flecainide or ranolazine
Long QTS-1 Long QTS-2 Long QTS-3
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Benefits of Genetic Testing
Genetic counseling Diagnostic Therapeutic implementation Cost effective
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The following professional sporting organizations endorse ECG screening followed by other tests if abnormal National Football League (NFL) Major League Baseball (MLB) National Basketball Association (NBA) National Hockey League (NHL) Major League Soccer (MLS)
75% of all deaths in athletes is cardiac related and almost always precipitated by exertion.
Familial hypertrophic cardiomyopathy (HCM) is the most common cause of sudden cardiac death below the age of 36 years.
HCM is almost always asymptomatic, thus no warning precedes sudden death.
Sudden Death in Athletes
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Role of Genetic Testing in Cardiovascular Pharmacogenomics
Anticoagulation
Platelet Therapy
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9p21: The First Genetic Risk Factor For CAD
9p21 genetic risk variant is extremely common with one or two copies occurring in 75% of the population
Homozygotes carry increased risk of 50% for CAD Heterozygotes carry increased risk of 25% for CAD
9p21 locus risk is independent of known risk factors for CAD, namely: cholesterol, hypertension or diabetes
9p21 risk allele is estimated to be present in 4.5 billion people
McPherson R, et al. Science 2007:316(5830);1488 – 1491
Helgadottir A, et al. Science 2007:316(5846);1491-3
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Genetics Of Coronary Artery Disease and Myocardial Infarction
50 genetic risk variants for CAD of genome-wide significance
have been identified and replicated in
independent populations
CARDIoGRAMplusC4D Consortium. Nature Genetics: Jan 2013;Vol.45
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Distribution of Genetic Risk Variants Associated with CAD
Cases Controls
Per
cent
of
Pop
ulat
ion
Genetic Risk Score (cGRS) based on 21 genetic variants
Ottawa Heart Genomic Study (n=14,495)
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Directives for Cardiology • The time for genetic testing of cardiovascular
Mendelian disorders is now. • Genetic screening is ultimately necessary for
comprehensive prevention of Coronary Artery Disease • Personalized Medicine is in large part dictated by
genetic predisposition
Structured education of Genetics is a prerequisite to enable our cardiologists to be proactive.
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ACC Educational Offerings in Genetics/Genomics
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• ACCSAP 8 (ACC Self Assessment Program) “Cardiovascular Genetics” – CME and MOC (maintenance of certification)
offering – Mendelian CV Diseases – Complex Genetic Diseases – Pharmacogenetics
ACC CME and MoC Offerings 3
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• Annual ACC Scientific Sessions – ACC.11
• 3 sessions on translational research in genetics, pharmacogenetic tailored antiplatelet therapy, and functional genomics in CV disease
– ACC.12 • 7 sessions on personalized medicine, genome sequencing,
translational research, genetic testing, gene therapy for heart failure, and the genetics of sudden cardiac death
ACC CME and MoC Offerings 3
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• Live Programs – Genetic/Genomic Topics – 2011
• “Genetics and genomics” • “Careers in Genetics and Proteomics”
– 2012 • “Addressing LV Dysfunction by Gene Therapy
Upgrading of Metabolism” • “Genetics and Arrhythmias”
ACC CME and MoC Offerings 3
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New Lifelong Learning & MOC ACC Cardiosource
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Optimize Delivery
of Knowledge & Decision
Support tools
ACC Digital Strategy
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• SPECT-MPI • CCT/MRI • TTE/TEE • Stress Echocardiography • Coronary Revascularization:
PCI/CABG • SPECT-MPI Update • Diagnostic Cath • Peripheral Vascular Disease • Pacemaker/ICD (2013) • Multimodality (2013)
Appropriate Use Criteria (AUC)
Imbed Appropriateness of Genetic testing in Disease Entities & Clinical Scenarios?
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Knowledge & Decision Support Tools at the Point of Care
• Migration towards point-of-order • Embedded clinical decision support • Tracking/data registry • Reporting/feedback
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ACC BoT Basic Science Advisory Task Force • Dr. Geoffrey Ginsberg (Chair) • Dr. Thomas Caskey • Dr. Robert Roberts • Dr. Christine Siedman • Dr. Jennifer Hall • Dr. Pat O’Gara • Dr. Deepak Srivastava
Future ACC Direction 4
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Future Goals • To develop whitepapers on basic and translational
science anticipated to affect cardiovascular practice in the next 10 years.
• To recommend goals for training the next generation of cardiologists (in training and early career) as well as at the current practitioner based on the emerging science and technologies that will impact the practice of cardiovascular medicine
• To advise the ACC on scientific questions, research strategy, and partnerships with other organizations.
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“It’s far more important to know what person the disease has than
what disease the person has.”
– Hippocrates
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Thank You
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Appropriate Use Criteria (AUC)
Define the “when to do” and “how often to do” a test or procedure in the context of
scientific evidence, the health care environment,
the patient’s profile and a physician’s judgment