Amylase, Lipase, and Acute Pancreatitis in People With Type 2 Diabetes Treated With Liraglutide: Results From the LEADER Randomized Trial
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Design
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Randomized, double-blind, placebo-controlled, multi-center trial
N= 9,340
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Objective
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To evaluate serum amylase and lipase levels and the rate of acute pancreatitis in patients with type 2 diabetes and high cardiovascular risk randomized to liraglutide or placebo and observed for 3.5–5.0 years
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Study Groups
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Liraglutide (n= 4,668)
Placebo (n= 4,672)
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Inclusion Criteria
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Type 2 diabetes and high risk for cardiovascular events |
Exclusion Criteria
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Type 1 diabetes; the use of GLP-1–receptor agonists, dipeptidyl peptidase 4 (DPP-4) inhibitors, pramlintide, or rapid-acting insulin; a familial or personal history of multiple endocrine neoplasia type 2 or medullary thyroid cancer; and the occurrence of an acute coronary or cerebrovascular event within 14 days before screening and randomization
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Methods
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Eligible patients were randomized 1:1 to either subcutaneous liraglutide 1.8 mg daily (or maximum tolerated doses) or placebo. Fasting serum lipase, amylase, and incident of pancreatitis were monitored.
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Duration
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Treatment period: 3.5 to 5 years
Median observation time: 3.84 years
Follow-up period: 30 day
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Outcome Measures
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Primary composite outcome: first occurrence of death from cardiovascular causes, nonfatal myocardial infarction, or nonfatal stroke
Secondary: acute pancreatitis
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Baseline Characteristics
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Liraglutide (n=4,668)
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Placebo (n=4,672)
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Age, years
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64.2 |
64.4 |
Male
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64.5% |
64.0% |
Diabetes duration, years
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12.8 + 8.0 |
12.9 + 8.1 |
Glycated hemoglobin, %
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8.7 + 1.6 |
8.7 + 1.5 |
Patient with a history of previous pancreatitis
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147 |
120 |
Results
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Endpoint
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Liraglutide (n=4,668)
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Placebo (N=4,672)
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Primary composite outcome
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608 (13.0%)
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694 (14.9%)
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Acute pancreatitis events a
Patients with a history of previous pancreatitis
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18 (0.4%)
2/147 (1.4%)
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23 (0.5%)
6/120 (5.05)
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Chronic pancreatitis
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0 |
2 (0.04%) |
Severity of acute pancreatitis
Mild
Moderate
Severe
Hospitalization
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16/18 (88.95)
0
2/18 (11.1%)
17/18 (94.4%)
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21/23 (91.3%)
3/23 (13.0%)
1/23 (4.3%)
19/23 (82.6%)
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Gallstone disease
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7/18 (38.9%)
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10/23 (43.5%)
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Predictive value of increased lipase or amylase levels for confirmed acute pancreatitis
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Lipase > ULN during trial b
Subsequent acute pancreatitis
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2,604
7 (0.27%)
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1,682
11 (0.65%)
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Lipase ≥33 ULN during trial
Subsequent acute pancreatitis
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339
0
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216
2(0.93%)
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Amylase >ULN during trial
Subsequent acute pancreatitis
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1,382
3 (0.22%)
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1,084
5 (0.46%)
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Amylase ≥33 ULN during trial
Subsequent acute pancreatitis
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38
0
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35
0
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a In both groups, most cases of acute pancreatitis developed >12 months after beginning the trial.
b Compared with the placebo group, liraglutide-treated patients had increases in serum lipase and amylase of 28.0% and 7.0%, respectively. Levels were increased at 6 months and then remained stable.
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Adverse Events
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See results.
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Study Author Conclusions
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In a population with type 2 diabetes at high cardiovascular risk, there were numerically fewer events of acute pancreatitis among liraglutide-treated patients (regardless of previous history of pancreatitis) compared with the placebo group. Liraglutide was associated with increases in serum lipase and amylase, which were not predictive of an event of subsequent acute pancreatitis.
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InpharmD Researcher Critique
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The population of the trial included patients with type 2 diabetes, the majority being men, with a higher mean age and longer diabetes duration. Therefore, the findings may not be generalizable to other patient populations. Furthermore, since only a small number of patients with a previous history of pancreatitis were included, the recurrent risk cannot be completely ruled out.
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