Management of Type Diabetes(T2DM): Getting to Goal Safelyimupdateskw.com › presentation ›...
Transcript of Management of Type Diabetes(T2DM): Getting to Goal Safelyimupdateskw.com › presentation ›...
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Management of Type Diabetes(T2DM):Getting to Goal Safely
Martin J. Abrahamson, MD FACP
Associate Professor of Medicine, Harvard Medical School
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Learning objectives
Develop an approach to intensifying treatment of people with T2DM using medications that have weight benefit, reduce risk for hypoglycemia and are ”simpler” and ”safer” to use
Understand the importance of individualizing goals of treatment
Understand cardiovascular risk associated with T2DM and the cardiovascular outcomes studies using drugs to treat T2DM
Understand the pathophysiology and natural history of type 2 DM (T2DM)
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Prevalence of diabetes
IDF Atlas 8th edition
3
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Diabetes in Kuwait
IDF Atlas, 8th edition
• Total adult population : 2,922,000
• Prevalence of diabetes in adults : 15.1%
• Total cases of diabetes in adults : 441,000
Diabetes in Middle East and North Africa:
• Projected increase of 72% between 2017 and 2045
• 39 million to 67 million
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Pathogenesis of T2D: The Ominous Octet
GI, gastrointestinal; HGP, hepatic glucose production; SU, sulphonylurea; T2D, type 2 diabetesDeFronzo RA. Diabetes 2009;58:773–795
Adipose tissue
Increased lipolysis
Skeletal muscle
Decreased glucose uptake
Liver
Insulin resistance
Increased HGP
Brain
Neurotransmitter dysfunction
PancreasImpaired insulin
secretion (β-cell decline)
GI tractDecreased incretin effect
KidneysIncreased glucose
reabsorption
Islet α-cellsIncreased glucagon
secretion
HyperglycemiaEnergy homeostasis
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AGi, α-glucosidase inhibitors; DPP4i, DPP-4 inhibitors; GLP-1Ra, GLP-1 receptor agonists; HGP, hepatic glucose production; SU, sulphonylureas; TZDs, thiazolidinediones
Ferrannini E, DeFronzo RA. Eur Heart J 2015;36:2288–2296.
Sites of action of non-insulin therapeutic agents
SU and meglitinidesGLP-1 RA
DPP4i
GLP-1 RAAGi
colesevelam
TZD
SGLT2i
TZDGLP-1 RA
bromocriptine
TZDMET
GLP-1 RADPP4i
GLP-1 RADPP4i
Hyperglycemia
Incretin effectInsulin release
Glucagon secretion
HGPNeurotransmitter
dysfunction
Glucose uptake
Glucose reabsorption
Lipolysis
α-cells
β-cells
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Elevated glucose levels are associated with increased CV risk in people with diabetes
1. Green JB. Postgrad Med 2014;126:190‒204; 2. Iribarren C et al. Circulation 2001;103:2668–2673; 3. Khaw KT et al. Ann Intern Med 2004;141:413–420; 4. Stratton IM et al. BMJ 2000;321:405–412;
5. Basa AL & Garber AJ. Ochsner J 2001;3:132–137; 6. Stamler J et al. Diabetes Care 1993;16:434–444.
• Over three-quarters of all hospitalizations for diabetes complications are due to macrovascular disease5
• Macrovascular complications of diabetes affect:‒ Heart (coronary artery disease)‒ Brain (cerebrovascular disease)‒ Extremities (peripheral vascular disease)
• CV mortality is increased in people with diabetes and rises further with additional CV risk factors6
• CV risk, which is increased 2-fold in people with T2DM,1
rises with escalating HbA1c levels2-4
Dia
bete
s
2x CV risk
>75%due to CV
↑BP
↑BMI AgeSmoking
Dyslipidemia
CV
↑HbA1c
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Key trials have shown that good glycemic control reduces macrovascular complications
• The more advanced the disease and the longer the duration of diabetes, the more difficult it becomes to reduce CV events and mortality3-7
• Good glycemic control reduces CV risk in people with T1DM‒ Significantly ↓ non-fatal MI, stroke or death from CVD1
‒ Significantly ↓ CV events1
• Multifactorial treatment is key to reducing the risk of CVD• Diabetes management should include management of lipids and blood
pressure plus aspirin use in addition to glucose control, leading to ↓ CV events and mortality8
• Good glycemic control reduces CV risk in people with T2DM‒ Significantly ↓ MI (after 10 years follow-up)2
DCCT/EDIC
UKPDS
ADVANCEACCORD
VADT
Steno-2
1. DCCT/EDIC. N Engl J Med 2005;353:2643–2653; 2. Holman RR et al. New Engl J Med 2008;359:1577–1589; 3. Gerstein HC et al. N Engl J Med 2008; 358:2545–2559; 4. Patel A et al. N Engl J Med 2008;358:2560–2572; 5. Zoungas S et al. N Engl J Med 2014; 371:1392–1406; 6. Duckworth W et al.
N Engl J Med 2009;360:129–139; 7. Hayward RA et al. N Engl J Med 2015;372:2197–2206; 8. Gaede P et al. N Engl J Med 2008;358:580–591.
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Case number 1
• Daniel
• Aged 53 years
• Newly diagnosed with type 2 DM
• BMI 30 kg/m2
• A1c 7.3%
• Fasting glucose 146 mg/dL (8.1 mmol/l) (repeat 138 mg/dL [7.7 mmol/l])
• Normal renal and liver function
• No complications of diabetes
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What is your HbA1c target for this patient?
A. 7.5 - 8.0%
B. 7.0 - 7.5%
C. 6.5 - 7.0%
D. <6.5%
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In addition to lifestyle modification how would you treat him?
1. Metformin
2. Sulfonylurea
3. DPP 4 inhibitor
4. GLP 1 receptor agonist
5. SGLT2 inhibitor
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Copyright ADA & EASD 2018
Foundational therapy is metformin and comprehensive lifestyle
management (including weight management and physical activity)
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General Treatment Considerations
• Glycemic targets: Individualization is key!
• Tighter targets (<6.5%) - younger, healthier, long life expectancy
• Looser targets (7.0 - 8.0% +) - older, comorbidities (e.g. coronary heart disease, multiple microvascular complications), hypoglycemia prone, shorter life expectancy etc
• Aim for best possible control that can be achieved safely
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What do we mean by ”safely”?
• Reduce risk of hypoglycemia
• Reduce weight gain
• Reduce cardiovascular risk
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Hypoglycemic risk with antihyperglycemicagents added to metformin
0
5
10
15
20
Biphasic insulin Glinides SU Basal insulin DPP-4i GLP-1RA TZD AGI
Odds r
atio v
s.
pla
cebo
AGI, alpha-glucosidase inhibitor; DPP-4i, dipeptidyl peptidase-4 inhibitor; GLP-1RA, glucagon-like peptide-1 receptor agonist; SGLT2i, sodium glucose co-
transporter-2 inhibitor; SU, sulphonylurea; TZD, thiazolidinedioneLiu et al. Diabetes Obes Metab 2012;14:810–20; Liu et al. J Diabetes Complications 2015;29:1295–303
SGLT2-i
Increased risk vs. placebo
No increased risk vs. placebo
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The consequences of hypoglycemia
Desouza et al. Diabetes Care 2010;33:1389–94; Frier et al. Diabetes Care 2011;34(Suppl. 2):S132–7; Frier. Nat Rev Endocrinol
2014;10:711–22; Gjedde et al. Diabetes 2015;64(Suppl. 1):A91
Brain
HeartCognitive dysfunctionBlackouts, seizures, comasPsychological effects
Increased risk of myocardial ischemiaCardiac arrhythmias
Circulation
InflammationBlood coagulation abnormalities
Hemodynamic changesEndothelial dysfunction
Falls, accidents, driving accidentsFracturesDislocations
Musculoskeletal
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Impact of different treatments on body weight
SGLT2i
0
–2
8
2
6
–6
4
–4
10
Range o
f w
eig
ht
change (
kg)
SUs Glinides TZDs Insulin DPP-4 inhibitor
Metformin GLP-1 analogue
Diabetes medication
Insulin detemir
DPP-4i, dipeptidyl peptidase-4 inhibitor; GLP-1, glucagon-like peptide-1; SGLT2i, sodium glucose co-transporter-2 inhibitor; SU, sulphonylurea; TZD, thiazolidinedione
Adapted from Mitri & Hamdy. Expert Opin Drug Saf 2009;8:573–84; Liu et al. J Diabetes Complications 2015;29:1295–303
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• Daniel responds well to lifestyle management and metformin
• He loses 10 lb and maintains this weight loss
• He tolerates metformin at it’s maximum dose of 1000 mg twice daily
• Fasting glucose drops below 120 mg/dL (6.6 mmol/l)
• A1c decreases to 6.6%
• He is exercising 5 times per week for 30 mins each time and has reduced his caloric and carbohydrate intake
• 3 years later his weight has increased by 5 lb, fasting glucose is up to 145 mg/dL (8 mmol/l), and the A1c is now 7.6%
Case number 1 contd
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1. He is not paying attention to diet and exercise
2. Metformin is not working any longer
3. He has worse insulin resistance
4. His β cell function has deteriorated
Why do you think glucose control has deteriorated?
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Decline of -Cell Function in the UKPDS Illustrates Progressive Nature of Type 2 Diabetes
Adapted from Holman RR. Diab Res Clin Pract. 1998;40(suppl):S21-S25
Years
-cell function(% of normal by HOMA)
0
20
40
60
80
100
10 9 8 7 6 5 4 3 2 1 0 1 2 3 4 5 6
Time of diagnosis
HOMA=homeostasis model assessment
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A. Add a sulfonylurea
B. Add an SGLT2 inhibitor
C. Add basal insulin
D. Add a DPP-4 inhibitor
E. Add a GLP-1RA
How would you next treat this patient?
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Cardiovascular outcomes trials (CVOT) in diabetes
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Results of CVOT for Newer Diabetes TherapiesDPP-4 Is GLP-1 RAs SGLT2-Is
Saxa Alo Sita Lixi Lira Exena
QW
Sema Dula Albi Empa Cana
*MACENeutral Neutral Neutral Neutral
(13%) Neutral
(26%)
(22%)
(14%)
(14%)
CV
Death
(22%)
(38%)
(13%)
Death
(Any
Cause)
(15%) Neutral
Non-
Fatal
Stroke
(39%)
Hosp
for HF
NS
Neutral
(35%)
(33%)
*MACE = Death From CV Causes, Nonfatal MI, or Nonfatal Stroke (+/- hospitalization for unstable angina) NS = non-statistically significant
Cefalu W, et al. Diabetes Care. 2018;41(1):14-31; Hernandez AF, et al. Lancet. 2018;392(10157):1519-1529; https://www.healio.com/endocrinology/diabetes/news/online/%7B6a15d82b-f25b-4e5f-b14b-857ddc955fd8%7D/rewind-dulaglutide-reduces-cv-risk-in-type-2-diabetes-without-cvd
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Copyright ADA & EASD 2018Copyright ADA & EASD 2018
Presence of cardiovascular disease is compelling indication
Step 1: Assess cardiovascular disease
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Copyright ADA & EASD 2018
If ASCVD Predominates:
GLP-1 receptor agonist with proven cardiovascular benefit
• Liraglutide > semaglutide > exenatide LAR
SGLT2 inhibitor with proven cardiovascular
benefit• Empagliflozin > canagliflozin
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Copyright ADA & EASD 2018Copyright ADA & EASD 2018
Among patients with ASCVD in whom HF coexists or is of concern, SGLT2 inhibitor are recommended
Rationale: Patients with T2D are at increased risk for heart failure with reduced or preserved ejection fraction
Significant, consistent reductions in hospitalization for heart failure have been seen in SGLT2 inhibitor trials
Caveat: trials were not designed to adjudicate heart failure
Majority of patients did not have clinical heart failure at baseline
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A. Add a sulfonylurea
B. Add an SGLT2 inhibitor
C. Add basal insulin
D. Add a DPP-4 inhibitor
E. Add a GLP-1RA
Now that we have reviewed the data how would you treat this patient?
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What should be the target levels for BP?
A. <120/80 mmHg
B. <130/80 mmHg
C. <140/85 mmHg
D. <140/90 mmHg
E. <150/90 mmHg
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What should be the target levels for LDL?
A. <30 mg/dL
B. 30-50 mg/dL
C. 50-70 mg/dL
D. 70 to 100 mg/dL
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Copyright ADA & EASD 2018
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Copyright ADA & EASD 2018
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Copyright ADA & EASD 2018
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Copyright ADA & EASD 2018
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Once Weekly Exenatide Plus Dapaglaflozin Daily Alone or in Combination as Add on to Metformin
Frias JP et al. Lancet Diabetes Endocrinol published online September 16 2016
Mean HbA1c at baseline 9.3%
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Weight Change – GLP1 RA or SGLT2 I or Both
Frias JP et al. Lancet Diabetes Endocrinol published online September 16 2016
Dapaglaflozin
Exenatide weekly
Both drugs
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DPP-4 inhibitors: key points
• Delay breakdown of endogenous GLP-1 to increase insulin secretion and reduce glucagon secretion
• Moderate HbA1c reduction
• Good safety profile
• Hypoglycemia rare
• Dose adjustment of some DPP4i required in renal dysfunction
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Glucagon-like peptide-1 RAs: key points
• Injectable non insulin agents that increase insulin and reduce glucagon secretion
• Delay gastric emptying; increase satiety
• Robust HbA1c reduction
• Hypoglycemia rare
• Good weight reduction
• Some have positive effect on CV outcomes
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SGLT2 inhibitors: key points
• Inhibit renal reabsorption of glucose
• Moderate HbA1c reduction
• Good weight reduction
• Hypoglycemia rare
• Contraindicated if eGFR 45 ml/min/1.73 m2
• Some have positive effect on CV outcomes
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Patients with T2D are diverse and complex
Hypogly
cem
iarisk
Com
orb
iditie
s? ?
T2D, type 2 diabetes
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Key points
There are multiple pathophysiologic
abnormalities that contribute to the development of
T2DM
“Ominous octet”
T2DM is a progressive disease
characterised by progressive loss of beta cell function
People with T2DM are at increased risk for cardiovascular
disease
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Key points
The goal of care is the best possible
glycemic control that you can achieve
safely
“Do no harm”
Goals should be individualised based
on the characteristics of the
patient
“One size does not fit all”
We can optimise care using therapies that are safer and
associated with less risk of
hypoglycemia, lower weight gain, lower cardiovascular risk and are simpler to
use