Treating Diabetes To Lower Cardiovascular Disease Risk Anne Peters, MD Professor, USC Keck School of Medicine Director, USC Clinical Diabetes Programs Disclosure of Financial Relationships— 2013/2014 Consultantship Abbott Diabetes Care BD Janssen Lilly Medscape Medtronic Minimed NovoNordisk Sanofi Takeda Speakers Bureau BMS/AstraZeneca NovoNordisk Gregg EW et al. N Engl J Med 2014;370:1514-1523 LDL Cholesterol Targets in Diabetes 4S LIPID CARE Clinical Event Rate Post CABG ASCOT HPS Risk Attributable to LDL-C CARDS PROVE IT Residual Risk of CVD ? Role of other lipid and non-lipid factors 60 80 100 120 140 160 LDL Cholesterol (mg/dl) 180 200 220 UKPDS: “Legacy Effect” of Insulin/Sulfonylurea Therapy Aggregate Endpoint 1997 2007 Any diabetes related endpoint RRR: P: 12% 0.029 9% 0.040 Microvascular disease RRR: P: 25% 0.009 24% 0.001 Myocardial infarction RRR: P: 16% 0.052 15% 0.014 All-cause mortality RRR: P: 6% 0.44 13% 0.007 After median 8.8 years post-trial followup RRR = Relative Risk Reduction P = Log Rank Holman RR, et al. New England Journal of Medicine 2008; 359:1577-1589 UKPDS: “Legacy Effect” of Insulin/Sulfonylurea vs Metformin Therapy Holman RR, et al. New England Journal of Medicine 2008; 359:1577-1589 Meta-Analysis of Glycemic Control Trials and Coronary Heart Disease Ray KK, et al. Lancet. 2009;373:1765-1772. Hyperglycemia and Coronary Heart Disease (CHD) • Possible reasons that individual trials failed to show a beneficial effect on CHD – Event rates were lower than expected – Differences in glycemic control were not large enough – The intervention or observation period was too short – Need to start intervention earlier in natural history of the disease Mazzone T. Lancet. 2009. 23;373:1737-1738. Hyperglycemia and CHD (cont’d) • Conclusions – Do not discount the benefits of managing hyperglycemia • Reduced microvascular disease well established • Premature to conclude that glucose control plays no part in CHD residual risk • Benefits of glucose control will be less than BP and lipid control – Additional studies needed to evaluate the effects of controlling hyperglycemia on CHD risk Mazzone T. Lancet. 2009. 23;373:1737-1738. 11 10 SGLT-2 I Dopamine agonists Renin inhibitors Angiotensin II Bile acid receptor sequestrants blockers DPP-4 ACE inhibitors Inhibitors Ca+ channel Amylinomimetics blockers GLP-1 peripheral Receptor -1 blockers Agonists HTN and DM: Drug Classes in US Over Past Half Century Number of Medication Classes 9 8 7 - blockers 6 5 4 3 2 ‘Glinides Thiazolidinediones central -2 agonists -glucosidase inhibitors diuretics adrenergic neuronal blockers Biguanides Biguanides vasodilators Sulfonylureas 1 insulin Slide from: Inzucchi S. 1950 1960 1970 1980 1990 2000 2010 Management of Hyperglycemia in Type 2 Diabetes: A Patient-Centered Approach Position Statement of the American Diabetes Association (ADA) and the European Association for the Study of Diabetes (EASD) Diabetes Care 2012;35:1364–1379 Diabetologia 2012;55:1577–1596 The ADA/EASD Position Statement on Management of Hyperglycemia in Type 2 Diabetes ADA Richard M. Bergenstal MD Int’l Diabetes Center, Minneapolis, MN EASD Michaela Diamant MD, PhD VU University, Amsterdam, The Netherlands John B. Buse MD, PhD Ele Ferrannini MD Anne L. Peters MD Michael Nauck MD Richard Wender MD Apostolos Tsapas MD, PhD Silvio E. Inzucchi MD (co-chair) David R. Matthews MD, Dphil University of North Carolina, Chapel Hill, NC Univ. of Southern California, Los Angeles, CA Thomas Jefferson University, Philadelphia, PA Yale University, New Haven, CT University of Pisa, Pisa, Italy Diabeteszentrum, Bad Lauterberg, Germany Aristotle University, Thessaloniki, Greece Oxford University, Oxford, UK Impact of Intensive Therapy for Diabetes: Summary of Major Clinical Trials Study Microvasc UKPDS DCCT / EDIC* ACCORD ADVANCE VADT CVD Mortality Kendall DM, Bergenstal RM. © International Diabetes Center 2009 UK Prospective Diabetes Study (UKPDS) Group. Lancet 1998;352:854. Holman RR et al. N Engl J Med. 2008;359:1577. DCCT Research Group. N Engl J Med 1993;329;977. Nathan DM et al. N Engl J Med. 2005;353:2643. Gerstein HC et al. N Engl J Med. 2008;358:2545. Patel A et al. N Engl J Med 2008;358:2560. Duckworth W et al. N Engl J Med 2009;360:129. (erratum: Moritz T. N Engl J Med 2009;361:1024) Initial Trial Long Term Follow-up * in T1DM Risk of CV Events and Death in Patients With Versus Without Severe Hypoglycemia (ADVANCE) Study inclusion criteria: T2DM + major vascular disease or ≥ 1 CV risk factor Macrovascular events 3.45 (2.34-5.08); P < .001 Death—any cause 3.30 (2.31-4.72); P < .001 Death—CV cause 3.78 (2.34-6.11); P < .001 Death—non-CV cause 2.86 (1.67-4.90); P < .001 Decreased risk Adjusted Hazard Ratio (95% CI) Increased risk Zoungas S, et al; ADVANCE Collaborative Group. N Engl J Med. 2010;363:1410-1418. Lessons from Accord Severe Hypoglycemia and Mortality Risk ACCORD ADVANCE VADT Severe Hypo Intensive Standard Intensive Standard Intensive Standard (%/ year) 3.1% 1.1% 0.7% 0.4% 12.0% 4.0% Annual mortality 5.0% 4.9% 4.0% 2.8% 3.0% 2.0% 1.0% 1.3% 1.0% 0.0% Intensive Standard Bonds et al. BMJ 2010;340:b4909 Severe Hypoglycemia in ACCORD • “Patients with type 2 diabetes who experience symptomatic, severe hypoglycaemia are at increased risk of death, regardless of the intensity of glucose control.” • “The increased risk of death seen in the ACCORD trial among participants in the intensive glycaemia control arm cannot be attributed to the increased rate of severe hypoglycaemia in intensive arm participants.” Bonds et al. BMJ 2010;340:b4909 ADA-EASD Position Statement: Management of Hyperglycemia in T2DM ANTI-HYPERGLYCEMIC THERAPY • Glycemic targets - HbA1c < 7.0% (mean PG ∼150-160 mg/dl [8.3-8.9 mmol/l]) - Pre-prandial PG <130 mg/dl (7.2 mmol/l) - Post-prandial PG <180 mg/dl (10.0 mmol/l) - Individualization is key: Tighter targets (6.0 - 6.5%) - younger, healthier Looser targets (7.5 - 8.0%+) - older, comorbidities, hypoglycemia prone, etc. - Avoidance of hypoglycemia PG = plasma glucose Diabetes Care 2012;35:1364–1379 Diabetologia 2012;55:1577–1596 Figure 1 Diabetes Care 2012;35:1364–1379 Diabetologia 2012;55:1577–1596 ADA-EASD Position Statement: Management of Hyperglycemia in T2DM 1. Patient-Centered Approach “...providing care that is respectful of and responsive to individual patient preferences, needs, and values ensuring that patient values guide all clinical decisions.” • Gauge patient’s preferred level of involvement. • Shared decision making – final decisions re: lifestyle choices ultimately lies with the patient. • Explore, where possible, therapeutic choices. • Utilize decision aids. Diabetes Care 2012;35:1364– 1379 Lifestyle: “Easy” Recommendations for Patients • Eat breakfast • Keep a regular eating schedule • Don’t skip meals • Identify and avoid stress triggers for eating • Don’t take “seconds” • Choose fruits for dessert • Drink a lot of water (at least 8 glasses each day) • No late-night eating Metformin: The Only Choice in Type 2 DM? • Most commonly used therapy for T2 DM (2/3rds of patients) • Clinical effects • Lowers A1C 1-2% (especially at high baseline A1C), no weight gain • Maximal clinical effect at 1500-2000 mg/day • Possible side effects and precautions • GI side effects common – less well tolerated by up to 10% • Not advised if significant renal or liver disease, heart failure (~20%) • Other features • Lower CV risk in obese patients (UKPDS) • Extensive clinical experience and lower cost • ? Favorable impact on cancer risk and mortality Sulfonylureas and the Secretagogues How Do We Use Them Now? • Most common (traditional) 2nd agent in T2 DM • Stimulate insulin release – during hyperglycemia and post-meal • Clinical Use • Inexpensive and commonly used, rapid glucose lowering • Limited dose effect and limited “durability” of effect • Side effects • Associated with weight gain and risk of hypoglycemia • Precautions and contraindications (elderly, renal disease) • Highest risk of hypoglycemia with GLYBURIDE • May not be good for those at CVD risk (longstanding discussion) • Associated with risk of severe hypoglycemia Thiazolidinediones (TZDs) Do We Target Insulin Resistance? • Clinical application • Targeted patients with clinical markers of insulin resistance • Dyslipidemia, HTN, established CVD, central obesity • May limit CVD risk and alter progression of diabetes • Adverse effects and considerations • Significant weight gain and increase risk of edema and HF • Increased risk of long-bone fractures • Macular edema • Patient selection • Higher CVD risk – particularly with dyslipidemia, est. CVD • Those at lower risk for fracture and with central obesity, NASH Grey A et al. J Clin Endocrinol Metab. 2007;92:1305-1310. Summary Of Pioglitazone Clinical Trials Center for Drug Evaluation & Research, July 30, 2007 PIO Meta-analysis - without PROactive 0.75 #CV Events # of Subjects 0.84 PROactive PIO Meta-Analysis plus PROactive 0.83 0.5 0.75 1.0 Hazard Ratio PIO COMP 375 8554 450 7836 Physiological Actions of GLP-1 Neuroprotection Appetite Cardioprotection Cardiac output Reduce BP Gastric emptying GLP-1 Glucagon secretion Insulin secretion Insulin biosynthesis β cell proliferation β cell apoptosis Glucose production Glucose disposal Sodium excretion Cardiovascular Effects of GLP-1-Based Therapies Improved weight, SBP, lipids Improved endothelial function Increased vasorelaxation Increased peripheral and coronary flow Increased ventricular function Decreased microvascular permeability Reduced inflammation Effects in isolated vessels/hearts and GLP-1R localization to CV tissues indicate some effects may be direct Okerson T, Chilton R. Cardiovasc Ther 30:e146-55, 2012 GLP-1 Secretion and Inactivation Mixed meal Intestinal GLP-1 release GLP-1 active GLP-1 Agonists • A1c reduction Exenatide • Weight loss Liraglutide • Albiglutide No hypos • Injectable Dulaglutide • GI side effects DPP-4 DPP-4 Inhibitors • A1c reduction Sitagliptin • Weight neutral Saxagliptin DPP-4 inhibitor GLP-1 inactive • No hypos Linagliptin • Alogliptin Few SE’s/pill Adapted from Rothenberg P, et al. Diabetes. 2000;49(suppl 1):A39. DPP-4 Inhibitors: Sitagliptin (Januvia), Saxagliptin (Onglyza), Linagliptin (Tradjenta) and Alopglitin (Nesina) • Clinical Use • Moderate effectiveness (A1C reduction ~0.5-0.8%) • Use in both combo and mono therapy • Unique Features • Limited side effect profile, very well tolerated, pancreatitis? • Weight neutral, no significant weight loss, no hypoglycemia • Variable clinical response (A1C reduction 0.2-1.1%) • Reduced dosing in chronic kidney disease (except for linagliptin) • Saxagliptin increased risk of CHF in high risk population SAVOR-TIMI 53: No Impact of Saxagliptin on Primary Outcome (MACE) Scirica BM et al: N Engl J Med 369:1317-1326; 2013 EXAMINE: No Impact of Alogliptin on the Primary Outcome (MACE) White WB et al: N Engl J Med 369:1327-1335; 2013 SAVOR-TIMI 53: Prespecified Clinical End Points Scirica BM et al: N Engl J Med 369:1317-1326; 2013 SAVOR-TIMI 53: Safety End Points Scirica BM et al: N Engl J Med 369:1317-1326; 2013 EXAMINE: Other Safety End Points White WB et al: N Engl J Med 369:1327-1335; 2013 Newest Drugs on the US Market GLP-1 RA Daily • Exenatide (BID) (Byetta) • Liraglutide (Victoza) Weekly • Exenatide (Bydureon) • Albiglutide (Tanzuem) • Dulaglutide (Trulicity) SGLT-2 Inhibitors • Canagliflozin (Invokana) • Dapagliflozin (Farxiga) • Empagliflozin (Jardiance) Structure of US Approved GLP-1 RAs Diabetes Metab Syndr Obes. 2009 May 15;2:37 Albiglutide GLP-1 H A E G T F T S D V S S Y L E G Q A A K E F I A W L V K G R G (7-37) amide Site of proteolytic inactivation (DPP-4) 7 10 15 20 25 30 35 37 Albiglutide H A E G T F T S D V S S Y L E G Q A A K E F I A W L V K G R H A E G T F T S D V S S Y L E G Q A A K E F I A W L V K G R Albumin • 2 GLP-1 molecules in tandem • Covalently bound to albumin • DPP-4 resistant • Half-life ~ 6-7 days Drucker D, et al. Lancet. 2006;368:1696-1705. Bush M, et al. Diabetes Obesity Metabolism. 2008 (in press). Pratley/Endo//14Jun13 Dulaglutide Exenatide Added to Basal Glargine 0.5 OG + EXE BID (Baseline 8.3 ± 0.1%) OG + PLB BID (Baseline 8.5 ± 0.1%) A1C Change (%) 0 -0.5 7.41 ± 0.09% -1 -1.5 -2 6.70 ± 0.09% 0% 18% LS Weeks mean ± SE Buse JB, et al. Ann Intern Med. 2011;154(2):103-112. 30% Exenatide Added to Basal Glargine 2 OG + EXE BID (Baseline 95.4 ± 1.7 kg) Change in Body Weight (kg) 1.5 OG + PLB BID (Baseline 93.8 ± 1.8 kg) 1 0.5 0.96 0 * -0.5 * * -1 * -1.5 * * * * * * -2.0 1.78 -2.5 -3 0 2 4 6 8 10 14 Weeks LS mean ± SE *P<.001 between-treatment comparison Buse JB, et al. Ann Intern Med. 2011;154(2):103-112. 18 22 26 30 Effects of Liraglutide on Systolic BP With or Without Concomitant Antihypertensive Agents Meta-analysis of 6 × 26-week clinical trials (N = 3967)1 PBO Change in SBP (mm Hg) Overall 1.0 0.5 0.0 -0.5 -1.0 -1.5 -2.0 -2.5 -3.0 -3.5 LIRA (1.8 mg) With antihypertensive No antihypertensive 0.76 -0.19 -1.13 -2.03 -2.55 a a -3.07 a Fonseca V, et al. 70th ADA Scientific Sessions. 2010:296-OR. a P < .05 vs PBO. GLP-1 RAs Improve Lipid Profiles in Patients With T2DM EXN BID 0 LEAD-61 26 weeks -10 -20 -30 -40 Significantly greater change vs EXN BID. EXN QW DURATION-12 30 weeks 5 Δ Lipid Level (mg/dL) Δ Lipid Level (mg/dL) 10 LIRA a 0 -5 a -10 -15 a -20 -25 -30 1. Buse J, et al. Lancet. 2009;374:39-47; 2. Drucker DJ, et al. Lancet. 2008;372:1240-1250. Anti-Inflammatory Effects of GLP-1 RAs in Patients With T2DM LIRA (1.9 mg, 1 X daily) vs PBO 14 weeks (N = 165)2 MCP-1 PAI-1 SAA IL-6 60 40 20 0 -20 -40 -60 -15 a -16 a -22 a Δ Inflammatory Markers from BL (%, 95% CI) Δ Inflammatory Markers from BL (%± SE) EXN (10 mcg, 2 X daily) vs PBO 12 weeks (N = 24)1 EXN BID also significantly reduced mononuclear cell • Production of reactive oxygen species (ROS) • NFκB activation • TNFα and IL-1β expression BL, baseline; BNP, B-type natriuretic peptide; MCP-1, monocyte chemoattractant protein-1; PBO, placebo; SAA, serum amyloid A. a P < .05 vs baseline and control; b P < .05 vs baseline. BNP IL-6 60 40 20 0 -20 -40 -60 -25 b -2 -38 b 1. Chaudhuri A, et al. J Clin Endocrinol Metab. 2012;97:198-207. 2. Courrèges J, et al. Diabetic Med. 2008;25:1125-1131. Incretin Cardiovascular Outcome Trials Risk Factors Stable CAD-CVD-PAD ACS patients EXAMINE Alogliptin n=5,400 SAVOR-TIMI 53 - Saxagliptin n=16,500 TECOS - Sitagliptin n=14,000 CARMELINA (vs pbo) - Linagliptin n=8,300 CAROLINA (vs SU) - Linagliptin n=6,000 September 2013 December 2014 January 2018 September 2018 ELIXA Lixisenatide n=6,000 LEADER - Liraglutide n=9,340 SUSTAIN 6 - Semaglutide n=3,297 September 2013 January 2015 October 2015 January 2016 EXSCEL - Exenatide LAR n=14,000 April 2018 REWIND - Dulaglutide n=9,622 April 2019 SGLT-2 Inhibitors—Canagliflozin, Dapagliflozin, Empagliflozin Clinical Effects • Novel mechanism of action/oral agent • Most will respond—action independent of beta-cell function • A1C reduction ~1% with 2-3 kg weight loss Possible Side Effects and Precautions • Mycotic genital infections • Findings due to volume depletion • Don’t use if eGFR <45% Other Features • Lowers BP slightly • Raises LDL cholesterol Jacobsen LV, et al. Br J Clin Pharmacol. 2009;68:898-905. Linnebjerg H, et al. Br J Clin Pharmacol. 2007;64:317-327. The Prospect of SGLT2 Inhibition RENAL HANDLING OF GLUCOSE (180 L/day) (900 mg/L) = 162 g/day SGLT 2 S G L T 1 90% 10% NO GLUCOSE SGLT2 Inhibitors Lower Renal Threshold for Glucose Excretion (RTG) Urinary glucose excretion (g/day) 125 T2DM + SGLT2 inhibition 100 75 Healthy 180 mg/dL RTG RTG T2DM 240 mg/dL RTG 50 SGLT2 inhibition 25 0 50 100 150 200 250 300 Plasma glucose (mg/dL) Adapted with permission from Abdul-Ghani MA, DeFronzo RA. T2DM = type 2 diabetes mellitus. 1. Abdul-Ghani MA, DeFronzo RA. Endocr Pract. 2008;14(6):782-790. 2. Nair S, Wilding JP. J Clin Endocrinol Metab. 2010;95(1):34-42. Effect of Canagliflozin on A1C as Mono or Combination Therapy Canagliflozin Add-on1,2 Dual Mono1 +Met (N = 584) (N=1284) 7.94 7.95 +SU (N=127) +Met + SU (N=469) +Met + Pio (N=342) 8.29 8.28 8.13 8.13 7.99 7.96 Older subjects1-3 +Insulin ± AHAs* ± AHA (N=1718) (N=714) 7.7 8.33 8.27 LS Mean Change From Baseline in A1C (%) Placebo-Subtracted Difference Baseline A1C (%) 8.06 8.01 Triple *Studies for combinations including SU or insulin were 18 weeks in duration; all others were 26 weeks in duration. †P<0.001 for reduction vs control. 1. INVOKANA™ [prescribing information]. Titusville, NJ: Janssen Pharmaceuticals, Inc.; 2013. 2. US Food and Drug Administration. Available at:http://www.fda.gov/downloads/advisorycommittees/committeesmeetingmaterials/drugs/endocrinologicandmetabolicdrugsadvisorycommittee/ucm33623 6.pdf. Accessed May 02, 2014. 3. Bode B, et al. Hosp Pract. 2013; 41:72-84. Percent Change in Body Weight LS mean % change –0.6% (–0.5 kg) –2.8% (–2.5 kg) –3.9% (–3.4 kg) 0 6 12 18 26 Time point (wk) PBO = placebo; CANA = canagliflozin; LS = least squares; SE = standard error mITT = modified intent-to-treat; LOCF = last observation carried forward Stenlöf et al, 2013. –2.2% (–1.9 kg) P <0.001 –3.3% (–2.9 kg) P <0.001 Canagliflozin and Dapagliflozin Warnings and Precautions o Hypoglycemia: risk with secretagogues and/or o o o o o RxList, 2014. insulin Genital mycotic infections Volume depletion/orthostatic changes Hypersensitivity Increased LDL Bladder cancer: don’t use if active; use with caution if prior history of bladder cancer (dapagliflozin only) Dapa/Cana/Empa in Patients with Renal Impairment Both dapagliflozin and canagliflozin are contraindicated in patients with severe renal impairment, ESRD, or on dialysis: Canagliflozin – Contraindicated in patients with eGFR <45 ml/min/1.73 m2 and should be discontinued in patients if eGFR falls to <45 ml/min/1.73 m2 – Dose is limited to 100 mg once daily in patients with eGFR 45-<60 ml/min/1.73 m2 Dapagliflozin – Contraindicated in patients with eGFR <60 ml/min/1.73 m2 and should be discontinued in patients if eGFR falls to <60 ml/min/1.73 m2 Empagliflozin Contraindicated if eGFR <45 ml/min/1.73 m2 Drugs.com, 2014. Bristol-Myers Squibb, 2014. Volume Reductions Observed with Canagliflozin and Dapagliflozin: Results from Clinical Trials o SGLT2 inhibitors cause osmotic diuresis that may result in intravascular volume reductions Pool of 12 placebo controlled studies* Pool of 8 clinical trials† Pool of 13 placebo controlled studies* Placebo Dapa 5 mg Dapa 10 mg Placebo Dapa 10 mg Comparator group** Cana 100 mg Cana 300 mg Overall population 0.4% 0.6% 0.8% 0.7% 1.1% 1.5% 2.3% 3.4% Patients on loop diuretics 1.8% 0 9.7% 1.5% 2.5% 4.7% 3.2% 8.8% eGFR ≥30 and <60 ml/min/1.7 3 m2 1.9% 0.9% 1.1% 1.5% 1.9% 2.5% 4.7% 8.1% ≥65-years of age 0.4% 0.5% 1.5% 0.8% 1.7% NR NR NR NR NR NR NR NR 2.6% 4.9% 8.7% ≥75-years of age *Volume depletion includes reports of dehydration, hypovolemia, orthostatic hypotension, or hypotension. **Includes placebo and active-comparator groups. † Patients could have more than 1 of the listed risk factors. Farxiga.com, 2014. Invokana.com, 2014. When Goal is to Avoid Hypoglycemia Reducing CVD Risk Treating T2DM o Use statins, control BP, give aspirin o Use diabetes drugs that don’t cause o o o o o RxList, 2014. hypoglycemia Improve control early and maintain it Pioglitazone potentially beneficial based on clinical trial data GLP-1 RA’s and SGLT-2 I’s reduce BP GLP-1 RA reduce inflammatory markers TZD’s and ?DPP-IV increase CHF risk Thank You RxList, 2014.