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NHLBI/NEI National Institutes of Health. Diabetes & CVD. Patients with type 2 diabetes 2 to 4 X increased risk of CVD Question: What is value of intensive control of CVD risk factors in reducing CVD rates? Glycemia Lipids (HDL-C/TG) Systolic Blood Pressure. Overall Goal for ACCORD.
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NHLBI/NEI National Institutes of Health
Diabetes & CVD • Patients with type 2 diabetes • 2 to 4 X increased risk of CVD • Question: What is value of intensive control of CVD risk factors in reducing CVD rates? • Glycemia • Lipids (HDL-C/TG) • Systolic Blood Pressure
Overall Goal for ACCORD To test three complementary medical treatment strategies for type 2 diabetes to enhance options for reducing the very high rate of major CVD morbidity and mortality
The Three Medical Strategies(Three Trials in One) • Intensive glycemic control • A1C < 6% versus 7.0%-7.9% • Treatment to increase HDL-C and lower TG (in context of good LDL-C and glycemia control) • Fenofibrate + Simvastatin versus Simvastatin • Intensive blood pressure control (in context of good glycemia control) • SBP < 120 mmHg versus SBP < 140 mmHg
Double 2 x 2 Lipid BP Fibrate Placebo Intensive Std Intensive Glycemic Control 1450 1450 1050 1050 5000 Standard Glycemic Control 1450 1450 1050 1050 5000 2900 2100 2100 10,000 2900 5800 4200
Primary Outcome Measure First occurrence of a major cardiovascular disease event: • Nonfatal MI • Nonfatal Stroke • Cardiovascular Death MI’s, Strokes, and Deaths adjudicated by a committee masked to treatment assignment
Other ACCORD Outcomes • Other cardiovascular outcomes • Total mortality • Microvascular outcomes • Health-related Quality of Life (subset) • Cost-effectiveness (subset)
ACCORD Eye Study National Eye Institute
ACCORD Eye Study Rationale Diabetic Retinopathy •important primary endpoint •common cause of vision loss •medical management crucial •standard of care: yearly dilated eye exams
Diabetic Retinopathy • important primary endpoint •DCCT – Primary outcome •UKPDS – Composite primary outcome
Diabetes Control and Complications Trial (DCCT) Randomized Clinical Trial Intensive Blood Glucose Control vs. Conventional Blood Glucose Control Type 1 Diabetes
Conventional Intensive DCCT Results Primary Intervention - 3 Step Change Percent With Event Years
Conventional Intensive DCCT Results Secondary Intervention - 3 Step Change Percent With Event Years
Conventional Intensive DCCT Results Secondary Intervention - 3 Step Change Percent With Event P < 0.02 Years
DCCT Summary Results of Intensive Therapy: Reduction in Retinopathy • Clinically Important Retinopathy (34-76%) • Photocoagulation (34%) • First Appearance of Retinopathy (27%)
Further Retinopathy Progression from the Level at DCCT CloseoutAdjusted For DCCT Closeout Level Conventional Rx Tight Control Rx Percentage Years of follow-up in EDIC
U K Prospective Diabetes Study Randomized Clinical Trial Intensive Blood Glucose Control vs. Conventional Blood Glucose Control Type 2 Diabetes
U K Prospective Diabetes Study Microvascular Endpoints Event Rate 30% Photocoagulation/VH Renal Failure/Death Myocardial Infarction p=0.0099 20% Conventional 10% Intensive 0% 0 3 6 9 12 15 Years
U K Prospective Diabetes Study Retinopathy - 2 Step Progression Event Rate 50% Conventional 40% 30% Intensive 20% 10% p=0.02 p=0.01 p=0.78 p=0.01 0% 0 3 6 9 12 Years
U K Prospective Diabetes Study Randomized Clinical Trial Intensive Blood Pressure Control vs. Conventional Blood Pressure Control Type 2 Diabetes
U K Prospective Diabetes Study Blood Pressure by Treatment Group mm Hg 160 Less Tight - Systolic More Tight - Systolic 140 120 100 Less Tight - Diastolic 80 More Tight - Diastolic 0 1 2 3 4 5 6 7 8 9 Years
UKPDS Blood Pressure Trial Retinopathy - 2 Step Progression Event Rate 50% Less Tight BP Control 40% 30% More Tight BP Control 20% 10% P=0.38 P=0.02 P=0.004 0% 0 3 6 9 12 Years
Serum Cholesterol and Diabetic Retinopathy
Serum cholesterol Observational Data Early Treatment Diabetic Retinopathy Study (ETDRS) Wisconsin Epidemiologic Study of Diabetic Retinopathy (WESDR)
Serum cholesterol-ETDRS Results Elevated levels: Doubledthe risk of retinal hard exudateat baseline 50%increased risk of developing hard exudate during follow-up 50%increased risk of moderate vision loss at 5 years
ACCORD Eye Study Objectives to assess the rates of progression of diabetic retinopathy To evaluate the effects of these 3 medical treatment on diabetic retinopathy
ACCORD Eye Study Eye Exam and Fundus Photos Baseline (within 4 months of enrollment) 4 years for all enrolled at baseline Sample size: n=4,065
ACCORD Eye Study Study flow Clinical coordinator from the diabetes clinic will schedule patient Eye exam form, fundus photographs sent to Coordinating Center (Wake Forest U.) and Reading Center (U. of Wisconsin)