Clinical Pharmacology for Victoza
Mechanism Of Action
Liraglutide is an acylated human GLP-1 receptor agonist with 97% amino acid sequence homology to endogenous human GLP-1(7-37). GLP-1(7-37) represents <20% of total circulating endogenous GLP-1. Like GLP-1(7-37), liraglutide activates the GLP-1 receptor, a membrane-bound cell-surface receptor coupled to adenylyl cyclase by the stimulatory G-protein, Gs, in pancreatic beta cells. Liraglutide increases intracellular cyclic AMP (cAMP) leading to insulin release in the presence of elevated glucose concentrations. This insulin secretion subsides as blood glucose concentrations decrease and approach euglycemia. Liraglutide also decreases glucagon secretion in a glucose-dependent manner. The mechanism of blood glucose lowering also involves a delay in gastric emptying.
GLP-1(7-37) has a half-life of 1.5-2 minutes due to degradation by the ubiquitous endogenous enzymes, dipeptidyl peptidase 4 (DPP-4) and neutral endopeptidases (NEP). Unlike native GLP-1, liraglutide is stable against metabolic degradation by both peptidases and has a plasma half-life of 13 hours after subcutaneous administration. The pharmacokinetic profile of liraglutide, which makes it suitable for once daily administration, is a result of self-association that delays absorption, plasma protein binding and stability against metabolic degradation by DPP-4 and NEP.
Pharmacodynamics
VICTOZA’s pharmacodynamic profile is consistent with its pharmacokinetic profile observed after single subcutaneous administration as VICTOZA lowered fasting, premeal and postprandial glucose throughout the day [see Pharmacokinetics].
Fasting and postprandial glucose was measured before and up to 5 hours after a standardized meal after treatment to steady state with 0.6, 1.2 and 1.8 mg VICTOZA or placebo. Compared to placebo, the postprandial plasma glucose AUC0-300min was 35% lower after VICTOZA 1.2 mg and 38% lower after VICTOZA 1.8 mg.
Glucose-Dependent Insulin secretion
The effect of a single dose of 7.5 mcg/kg (~ 0.7 mg) VICTOZA on insulin secretion rates (ISR) was investigated in 10 patients with type 2 diabetes mellitus during graded glucose infusion. In these patients, on average, the ISR response was increased in a glucose-dependent manner (Figure 2).
Figure 2 Mean Insulin Secretion Rate (ISR) versus Glucose Concentration Following Single-Dose VICTOZA 7.5 mcg/kg (~ 0.7 mg) or Placebo in Patients with Type 2 Diabetes Mellitus (N=10) During Graded Glucose Infusion
Glucagon Secretion
VICTOZA lowered blood glucose by stimulating insulin secretion and lowering glucagon secretion. A single dose of VICTOZA 7.5 mcg/kg (~ 0.7 mg) did not impair glucagon response to low glucose concentrations.
Gastric Emptying
VICTOZA causes a delay of gastric emptying, thereby reducing the rate at which postprandial glucose appears in the circulation.
Cardiac Electrophysiology (QTc)
The effect of VICTOZA on cardiac repolarization was tested in a QTc study. VICTOZA at steady state concentrations with daily doses up to 1.8 mg did not produce QTc prolongation.
Pharmacokinetics
Absorption
Following subcutaneous administration, maximum concentrations of liraglutide are achieved at 8-12 hours post dosing. The mean peak (Cmax) and total (AUC) exposures of liraglutide were 35 ng/mL and 960 ng·h/mL, respectively, for a subcutaneous single dose of 0.6 mg. After subcutaneous single dose administrations, Cmax and AUC of liraglutide increased proportionally over the therapeutic dose range of 0.6 mg to 1.8 mg. At 1.8 mg VICTOZA, the average steady state concentration of liraglutide over 24 hours was approximately 128 ng/mL. AUC0-∞ was equivalent between upper arm and abdomen, and between upper arm and thigh. AUC0-∞ from thigh was 22% lower than that from abdomen. However, liraglutide exposures were considered comparable among these three subcutaneous injection sites. Absolute bioavailability of liraglutide following subcutaneous administration is approximately 55%.
Distribution
The mean apparent volume of distribution after subcutaneous administration of VICTOZA 0.6 mg is approximately 13 L. The mean volume of distribution after intravenous administration of VICTOZA is 0.07 L/kg. Liraglutide is extensively bound to plasma protein (>98%).
Elimination
The mean apparent clearance following subcutaneous administration of a single dose of liraglutide is approximately 1.2 L/h with an elimination half-life of approximately 13 hours.
Metabolism
During the initial 24 hours following administration of a single [3H]-liraglutide dose to healthy subjects, the major component in plasma was intact liraglutide. Liraglutide is endogenously metabolized in a similar manner to large proteins without a specific organ as a major route of elimination.
Excretion
Following a [3H]-liraglutide dose, intact liraglutide was not detected in urine or feces. Only a minor part of the administered radioactivity was excreted as liraglutide-related metabolites in urine or feces (6% and 5%, respectively). The majority of urine and feces radioactivity was excreted during the first 6-8 days.
Specific Populations
Geriatric Patients
Age had no effect on the pharmacokinetics of VICTOZA based on a pharmacokinetic study in healthy elderly subjects (65 to 83 years) and population pharmacokinetic analyses of patients 18 to 80 years of age [see Use In Specific Populations].
Pediatric Patients
A population pharmacokinetic analysis was conducted for VICTOZA using data from 72 pediatric patients (10 to 17 years of age) with type 2 diabetes mellitus. The pharmacokinetic profile of VICTOZA in the pediatric patients was consistent with that in adults.
Male And Female Patients
Based on the results of population pharmacokinetic analyses, females have 25% lower weight-adjusted clearance of VICTOZA compared to males.
Race Or Ethnic Groups
Race and ethnicity had no effect on the pharmacokinetics of VICTOZA based on the results of population pharmacokinetic analyses that included White, Black or African American, Asian and Hispanic or Latino/Non-Hispanic or Latino subjects.
Body Weight
Body weight significantly affects the pharmacokinetics of VICTOZA based on results of population pharmacokinetic analyses. The exposure of liraglutide decreases with an increase in baseline body weight. However, the 1.2 mg and 1.8 mg daily doses of VICTOZA provided adequate systemic exposures over the body weight range of 40 – 160 kg evaluated in the clinical trials. Liraglutide was not studied in patients with body weight >160 kg.
Patients With Renal Impairment
The single-dose pharmacokinetics of VICTOZA were evaluated in patients with varying degrees of renal impairment. Patients with mild (estimated creatinine clearance 50-80 mL/min) to severe (estimated creatinine clearance <30 mL/min) renal impairment and subjects with end-stage renal disease requiring dialysis were included in the trial. Compared to healthy subjects, liraglutide AUC in mild, moderate, and severe renal impairment and in end-stage renal disease was on average 35%, 19%, 29% and 30% lower, respectively [see Use In Specific Populations].
Patients With Hepatic Impairment
The single-dose pharmacokinetics of VICTOZA were evaluated in patients with varying degrees of hepatic impairment. Patients with mild (Child Pugh score 5-6) to severe (Child Pugh score > 9) hepatic impairment were included in the trial. Compared to healthy subjects, liraglutide AUC in patients with mild, moderate and severe hepatic impairment was on average 11%, 14% and 42% lower, respectively [see Use In Specific Populations].
Drug Interaction Studies
In Vitro Assessment Of Drug-Drug Interactions
VICTOZA has low potential for pharmacokinetic drug-drug interactions related to cytochrome P450 (CYP) and plasma protein binding.
In Vivo Assessment Of Drug-Drug Interactions
The drug-drug interaction studies were performed at steady state with VICTOZA 1.8 mg/day. Before administration of concomitant treatment, subjects underwent a 0.6 mg weekly dose increase to reach the maximum dose of 1.8 mg/day. Administration of the interacting drugs was timed so that Cmax of VICTOZA (812 h) would coincide with the absorption peak of the co-administered drugs.
Digoxin
A single dose of digoxin 1 mg was administered 7 hours after the dose of VICTOZA at steady state. The concomitant administration with VICTOZA resulted in a reduction of digoxin AUC by 16%; Cmax decreased by 31%. Digoxin median time to maximal concentration (Tmax) was delayed from 1 h to 1.5 h.
Lisinopril
A single dose of lisinopril 20 mg was administered 5 minutes after the dose of VICTOZA at steady state. The co-administration with VICTOZA resulted in a reduction of lisinopril AUC by 15%; Cmax decreased by 27%. Lisinopril median Tmax was delayed from 6 h to 8 h with VICTOZA.
Atorvastatin
VICTOZA did not change the overall exposure (AUC) of atorvastatin following a single dose of atorvastatin 40 mg, administered 5 hours after the dose of VICTOZA at steady state. Atorvastatin Cmax was decreased by 38% and median Tmax was delayed from 1 h to 3 h with VICTOZA.
Acetaminophen
VICTOZA did not change the overall exposure (AUC) of acetaminophen following a single dose of acetaminophen 1000 mg, administered 8 hours after the dose of VICTOZA at steady state. Acetaminophen Cmax was decreased by 31% and median Tmax was delayed up to 15 minutes.
Griseofulvin
VICTOZA did not change the overall exposure (AUC) of griseofulvin following co-administration of a single dose of griseofulvin 500 mg with VICTOZA at steady state. Griseofulvin Cmax increased by 37% while median Tmax did not change.
Oral Contraceptives
A single dose of an oral contraceptive combination product containing 0.03 mg ethinylestradiol and 0.15 mg levonorgestrel was administered under fed conditions and 7 hours after the dose of VICTOZA at steady state. VICTOZA lowered ethinylestradiol and levonorgestrel Cmax by 12% and 13%, respectively. There was no effect of VICTOZA on the overall exposure (AUC) of ethinylestradiol. VICTOZA increased the levonorgestrel AUC0-∞ by 18%. VICTOZA delayed Tmax for both ethinylestradiol and levonorgestrel by 1.5 h.
Insulin Detemir
No pharmacokinetic interaction was observed between VICTOZA and insulin detemir when separate subcutaneous injections of insulin detemir 0.5 Unit/kg (single-dose) and VICTOZA 1.8 mg (steady state) were administered in patients with type 2 diabetes mellitus.
Immunogenicity
The observed incidence of anti-drug antibodies is highly dependent on the sensitivity and specificity of the assay. Differences in assay methods preclude meaningful comparisons of the incidence of anti-drug antibodies in the studies described below with the incidence of anti-drug antibodies in other studies, including those with VICTOZA or other liraglutide products.
A subset of VICTOZA-treated patients (1104 of 2501, 44%) in five adult double-blind clinical trials of 26 weeks duration or longer were tested for the presence of anti-liraglutide antibodies at the end of treatment [see Clinical Studies] and 102/1104 (9%) of VICTOZA-treated patients developed anti-liraglutide antibodies. Of these 102 VICTOZA-treated patients, 56 (5%) patients developed antibodies that cross-reacted with native GLP-1. These cross-reacting antibodies were not tested for neutralizing effect against native GLP-1, and thus the potential for clinically significant neutralization of native GLP-1 was not assessed. Antibodies that had a neutralizing effect on liraglutide in an in vitro assay occurred in 12 (1%) of the VICTOZA-treated patients. There was no identified clinically significant effect of anti-liraglutide antibodies on effectiveness of VICTOZA.
In five double-blind adult glycemic control trials of VICTOZA, events from a composite of adverse events potentially related to immunogenicity (e.g., urticaria, angioedema) occurred among 0.8% of VICTOZA-treated patients and among 0.4% of comparator-treated patients. Urticaria accounted for approximately one-half of the events in this composite for VICTOZA-treated patients. Patients who developed anti-liraglutide antibodies were not more likely to develop events from the immunogenicity events composite than were patients who did not develop anti-liraglutide antibodies.
In the LEADER trial [see Clinical Studies], anti-liraglutide antibodies were detected in 11 out of the 1247 (0.9%) adult VICTOZA-treated patients with antibody measurements. Of the 11 adult VICTOZA-treated patients who developed anti-liraglutide antibodies, none were observed to develop neutralizing antibodies to liraglutide, and 5 patients (0.4%) developed cross-reacting antibodies against native GLP-1.
In a clinical trial with pediatric patients aged 10 years and older [see Clinical Studies], anti-liraglutide antibodies were detected in 1 (2%) VICTOZA treated patient at week 26 and 5 (9%) VICTOZA treated patients at week 53. None of the 5 patients had antibodies cross reactive to native GLP-1 or had neutralizing antibodies.
Clinical Studies
Glycemic Control Trials In Adults With Type 2 Diabetes Mellitus
In glycemic control trials in adults, VICTOZA has been studied as monotherapy and in combination with one or two oral anti-diabetic medications or basal insulin. VICTOZA was also studied in a cardiovascular outcomes trial (LEADER trial).
In each of the placebo controlled trials, treatment with VICTOZA produced clinically and statistically significant improvements in hemoglobin A1c and fasting plasma glucose (FPG) compared to placebo.
All VICTOZA-treated patients started at 0.6 mg/day. The dose was increased in weekly intervals by 0.6 mg to reach 1.2 mg or 1.8 mg for patients randomized to these higher doses. VICTOZA 0.6 mg is not effective for glycemic control and is intended only as a starting dose to reduce gastrointestinal intolerance [see DOSAGE AND ADMINISTRATION].
Monotherapy
In this 52-week trial, 746 adult patients with type 2 diabetes mellitus were randomized to VICTOZA 1.2 mg, VICTOZA 1.8 mg, or glimepiride 8 mg. Patients who were randomized to glimepiride were initially treated with 2 mg daily for two weeks, increasing to 4 mg daily for another two weeks, and finally increasing to 8 mg daily. Treatment with VICTOZA 1.8 mg and 1.2 mg resulted in a statistically significant reduction in HbA1c compared to glimepiride (Table 3). The percentage of patients who discontinued due to ineffective therapy was 3.6% in the VICTOZA 1.8 mg treatment group, 6.0% in the VICTOZA 1.2 mg treatment group, and 10.1% in the glimepiride-treatment group.
The mean age of participants was 53 years, and the mean duration of diabetes was 5 years. Participants were 49.7% male, 77.5% White, 12.6% Black or African American and 35.0% of Hispanic or Latino ethnicity. The mean BMI was 33.1 kg/m2.
Table 3 Results of a 52-week Monotherapy Trial in Adults with Type 2 Diabetes Mellitusa
|
VICTOZA
1.8 mg |
VICTOZA
1.2 mg |
Glimepiride
8 mg |
| Intent-to-Treat Population (N) |
246 |
251 |
248 |
| HbA1c (%) (Mean) |
| Baseline |
8.2 |
8.2 |
8.2 |
| Change frombaseline (adjusted mean)b |
-1.1 |
-0.8 |
-0.5 |
Difference from glimepiride arm (adjusted mean) b
95% Confidence Interval |
-0.6**
(-0.8, -0.4) |
-0.3*
(-0.5, -0.1) |
|
| Percentage of patients achieving HbA1c <7% |
51 |
43 |
28 |
| Fasting Plasma Glucose (mg/dL) (Mean) |
| Baseline |
172 |
168 |
172 |
| Change frombaseline (adjusted mean) b |
-26 |
-15 |
-5 |
Difference from glimepiride arm (adjusted mean) b
95% Confidence Interval |
-20**
(-29, -12) |
-10*
(-19, -1) |
|
| Body Weight (kg) (Mean) |
| Baseline |
92.6 |
92.1 |
93.3 |
| Change frombaseline (adjusted mean) b |
-2.5 |
-2.1 |
+1.1 |
Difference from glimepiride arm (adjusted mean)b
95% Confidence Interval |
-3.6**
(-4.3, -2.9) |
-3.2**
(-3.9, -2.5) |
|
a Intent-to-treat population using last observation on study
b Least squares mean adjusted forbaseline value
* p-value <0.05
** p-value <0.0001 |
Figure 3 Mean HbA1c for Adult Patients with Type 2 Diabetes Mellitus who Completed the 52-week Trial and for the Last Observation Carried Forward (LOCF, intent-to-treat) data at Week 52 (Monotherapy)
Combination Therapy
Add-on to Metformin
In this 26-week trial, 1,091 adult patients with type 2 diabetes mellitus were randomized to VICTOZA 0.6 mg, VICTOZA 1.2 mg, VICTOZA 1.8 mg, placebo, or glimepiride 4 mg (one-half of the maximal approved dose in the United States), all as add-on to metformin. Randomization occurred after a 6-week run-in period consisting of a 3-week initial forced metformin titration period followed by a maintenance period of another 3 weeks. During the titration period, doses of metformin were increased up to 2000 mg/day. Treatment with VICTOZA 1.2 mg and 1.8 mg as add-on to metformin resulted in a significant mean HbA1c reduction relative to placebo add-on to metformin and resulted in a similar mean HbA1c reduction relative to glimepiride 4 mg add-on to metformin (Table 4). The percentage of patients who discontinued due to ineffective therapy was 5.4% in the
VICTOZA 1.8 mg + metformin treatment group, 3.3% in the VICTOZA 1.2 mg + metformin treatment group, 23.8% in the placebo + metformin treatment group, and 3.7% in the glimepiride + metformin treated group.
The mean age of participants was 57 years, and the mean duration of diabetes was 7 years. Participants were 58.2% male, 87.1% White and 2.4% Black or African American. The mean BMI was 31.0 kg/m2.
Table 4 Results of a 26-week Trial of VICTOZA as Add-on to Metformin in Adults with Type 2 Diabetes Mellitusa
|
VICTOZA
1.8 mg +
Metformin |
VICTOZA
1.2 mg +
Metformin |
Placebo +
Metformin |
Glimepiride
4 mg†+
Metformin |
| Intent-to-Treat Population (N) |
242 |
240 |
121 |
242 |
| HbA1c (%) (Mean) |
| Baseline |
8.4 |
8.3 |
8.4 |
8.4 |
| Change frombaseline (adjusted mean)b |
-1.0 |
-1.0 |
+0.1 |
-1.0 |
Difference from placebo + metformin arm (adjusted mean)b
95% Confidence Interval |
-1.1**
(-1.3, -0.9) |
-1.1**
(-1.3, -0.9) |
|
|
Difference from glimepiride + metformin arm (adjusted mean)b
95% Confidence Interval |
0.0
(-0.2, 0.2) |
0.0
(-0.2, 0.2) |
|
|
| Percentage of patients achieving HbA1c <7% |
42 |
35 |
11 |
36 |
| Fasting Plasma Glucose (mg/dL) (Mean) |
| Baseline |
181 |
179 |
182 |
180 |
| Change frombaseline (adjusted mean)b |
-30 |
-30 |
+7 |
-24 |
Difference from placebo + metformin arm (adjusted mean)b
95% Confidence Interval |
-38**
(-48, -27) |
-37**
(-47, -26) |
|
|
Difference from glimepiride + metformin arm (adjusted mean)b
95% Confidence Interval |
-7
(-16, 2) |
-6
(-15, 3) |
|
|
| Body Weight (kg) (Mean) |
| Baseline |
88.0 |
88.5 |
91.0 |
89.0 |
| Change frombaseline (adjusted mean) b |
-2.8 |
-2.6 |
-1.5 |
+1.0 |
Difference from placebo + metformin arm (adjusted mean)b
95% Confidence Interval |
-1.3*
(-2.2, -0.4) |
-1.1*
(-2.0, -0.2) |
|
|
Difference from glimepiride + metformin arm (adjusted mean)b
95% Confidence Interval |
-3.8**
(-4.5, -3.0) |
-3.5**
(-4.3, -2.8) |
|
|
a Intent-to-treat population using last observation on study
b Least squares mean adjusted forbaseline value
† For glimepiride, one-half of the maximal approved United States dose.
*p-value <0.05
**p-value <0.0001 |
VICTOZA Compared to Sitagliptin, Both as Add-on to Metformin
In this 26–week, open-label trial, 665 adult patients with type 2 diabetes mellitus on a background of metformin ≥1,500 mg per day were randomized to VICTOZA 1.2 mg once daily, VICTOZA 1.8 mg once daily or sitagliptin 100 mg once daily, all dosed according to approved labeling. Patients were to continue their current treatment on metformin at a stable, pre-trial dose level and dosing frequency.
The mean age of participants was 56 years, and the mean duration of diabetes was 6 years. Participants were 52.9% male, 86.6% White, 7.2% Black or African American and 16.2% of Hispanic or Latino ethnicity. The mean BMI was 32.8 kg/m2.
The primary endpoint was the change in HbA1c from baseline to Week 26. Treatment with VICTOZA 1.2 mg and VICTOZA 1.8 mg resulted in statistically significant reductions in HbA1c relative to sitagliptin 100 mg (Table 5). The percentage of patients who discontinued due to ineffective therapy was 3.1% in the VICTOZA 1.2 mg group, 0.5% in the VICTOZA 1.8 mg treatment group, and 4.1% in the sitagliptin 100 mg treatment group. From a mean baseline body weight of 94 kg, there was a mean reduction of 2.7 kg for VICTOZA 1.2 mg, 3.3 kg for VICTOZA 1.8 mg, and 0.8 kg for sitagliptin 100 mg.
Table 5 Results of a 26-week Open-label Trial of VICTOZA Compared to Sitagliptin (both in combination with metformin) in Adults with Type 2 Diabetes Mellitusa
|
VICTOZA
1.8 mg +
Metformin |
VICTOZA
1.2 mg +
Metformin |
Sitagliptin
100 mg +
Metformin |
| Intent-to-Treat Population (N) |
218 |
221 |
219 |
| HbA1c (%) (Mean) |
| Baseline |
8.4 |
8.4 |
8.5 |
| Change frombaseline (adjusted mean) |
-1.5 |
-1.2 |
-0.9 |
Difference from sitagliptin arm (adjusted mean)b
95% Confidence Interval |
-0.6**
(-0.8, -0.4) |
-0.3**
(-0.5, -0.2) |
|
| Percentage of patients achieving HbA1c <7% |
56 |
44 |
22 |
| Fasting Plasma Glucose (mg/dL) (Mean) |
| Baseline |
179 |
182 |
180 |
| Change frombaseline (adjusted mean) |
-39 |
-34 |
-15 |
Difference from sitagliptin arm (adjusted mean)b
95% Confidence Interval |
-24**
(-31, -16) |
-19**
(-26, -12) |
|
a Intent-to-treat population using last observation on study
b Least squares mean adjusted forbaseline value
**p-value <0.0001 |
Figure 4 Mean HbA1c for Adult Patients with Type 2 Diabetes Mellitus who Completed the 26-week Trial and for the Last Observation Carried Forward (LOCF, intent-to-treat) data at Week 26
Combination Therapy with Metformin and Insulin
This 26-week open-label trial enrolled 988 adult patients with type 2 diabetes mellitus with inadequate glycemic control (HbA1c 7-10%) on metformin (≥1,500 mg/day) alone or inadequate glycemic control (HbA1c 7-8.5%) on metformin (≥1500 mg/day) and a sulfonylurea. Patients who were on metformin and a sulfonylurea discontinued the sulfonylurea then all patients entered a 12-week run-in period during which they received add-on therapy with VICTOZA titrated to 1.8 mg once-daily. At the end of the run-in period, 498 patients (50%) achieved HbA1c <7% with VICTOZA 1.8 mg and metformin and continued treatment in a non-randomized, observational arm. Another 167 patients (17%) withdrew from the trial during the run-in period with approximately one-half of these patients doing so because of gastrointestinal adverse reactions [see ADVERSE REACTIONS]. The remaining 323 patients with HbA1c ≥7% (33% of those who entered the run-in period) were randomized to 26 weeks of once-daily insulin detemir administered in the evening as add-on therapy (N=162) or to continued, unchanged treatment with VICTOZA 1.8 mg and metformin (N=161). The starting dose of insulin detemir was 10 units/day and the mean dose at the end of the 26-week randomized period was 39 units/day. During the 26 week randomized treatment period, the percentage of patients who discontinued due to ineffective therapy was 11.2% in the group randomized to continued treatment with VICTOZA 1.8 mg and metformin and 1.2% in the group randomized to add-on therapy with insulin detemir.
The mean age of participants was 57 years, and the mean duration of diabetes was 8 years. Participants were 55.7% male, 91.3% White, 5.6% Black or African American and 12.5% of Hispanic or Latino ethnicity. The mean BMI was 34.0 kg/m2.
Treatment with insulin detemir as add-on to VICTOZA 1.8 mg + metformin resulted in statistically significant reductions in HbA1c and FPG compared to continued, unchanged treatment with VICTOZA 1.8 mg + metformin alone (Table 6). From a mean baseline body weight of 96 kg after randomization, there was a mean reduction of 0.3 kg in the patients who received insulin detemir add-on therapy compared to a mean reduction of 1.1 kg in the patients who continued on unchanged treatment with VICTOZA 1.8 mg + metformin alone.
Table 6 Results of a 26-week Open-label Trial of Insulin detemir as add on to VICTOZA + Metformin Compared to Continued Treatment with VICTOZA + Metformin alone in Adult Patients with Type 2 Diabetes Mellitus not Achieving HbA1c < 7% after 12 weeks of Metformin and VICTOZAa
|
Insulin detemir
+ VICTOZA +
Metformin |
VICTOZA +
Metformin |
| Intent-to-Treat Population (N) |
162 |
157 |
| HbA1c (%) (Mean) |
| Baseline (week 0) |
7.6 |
7.6 |
| Change frombaseline (adjusted mean) |
-0.5 |
0 |
Difference from VICTOZA + metformin arm (LS mean)b
95% Confidence Interval |
-0.5**
(-0.7, -0.4) |
|
| Percentage of patients achieving HbA1c <7% |
43 |
17 |
| Fasting Plasma Glucose (mg/dL) (Mean) |
| Baseline (week 0) |
166 |
159 |
| Change frombaseline (adjusted mean) |
-39 |
-7 |
Difference from VICTOZA + metformin arm (LS mean)b
95% Confidence Interval |
-31**
(-39, -23) |
|
a Intent-to-treat population using last observation on study
b Least squares mean adjusted forbaseline value
**p-value <0.0001 |
Add-on to Sulfonylurea
In this 26-week trial, 1,041 adult patients with type 2 diabetes mellitus were randomized to VICTOZA 0.6 mg, VICTOZA 1.2 mg, VICTOZA 1.8 mg, placebo, or rosiglitazone 4 mg (one-half of the maximal approved dose in the United States), all as add-on to glimepiride. Randomization occurred after a 4-week run-in period consisting of an initial, 2-week, forced-glimepiride titration period followed by a maintenance period of another 2 weeks. During the titration period, doses of glimepiride were increased to 4 mg/day. The doses of glimepiride could be reduced (at the discretion of the investigator) from 4 mg/day to 3 mg/day or 2 mg/day (minimum) after randomization, in the event of unacceptable hypoglycemia or other adverse events.
The mean age of participants was 56 years, and the mean duration of diabetes was 8 years. Participants were 49.4% male, 64.4% White and 2.8% Black or African American. The mean BMI was 29.9 kg/m2.
Treatment with VICTOZA 1.2 mg and 1.8 mg as add-on to glimepiride resulted in a statistically significant reduction in mean HbA1c compared to placebo add-on to glimepiride (Table 7). The percentage of patients who discontinued due to ineffective therapy was 3.0% in the VICTOZA 1.8 mg + glimepiride treatment group, 3.5% in the VICTOZA 1.2 mg + glimepiride treatment group, 17.5% in the placebo + glimepiride treatment group, and 6.9% in the rosiglitazone + glimepiride treatment group.
Table 7 Results of a 26-week Trial of VICTOZA as add-on to Sulfonylurea in Adult Patients with Type 2 Diabetes Mellitusa
|
VICTOZA
1.8 mg +
Glimepiride |
VICTOZA
1.2 mg +
Glimepiride |
Placebo +
Glimepiride |
Rosiglitazone
4 mg† +
Glimepiride |
| Intent-to-Treat Population (N) |
234 |
228 |
114 |
231 |
| HbA1c (%) (Mean) |
| Baseline |
8.5 |
8.5 |
8.4 |
8.4 |
| Change frombaseline (adjusted mean) b |
-1.1 |
-1.1 |
+0.2 |
-0.4 |
Difference from placebo + glimepiride arm (adjusted mean) b
95% Confidence Interval |
-1.4**
(-1.6, -1.1) |
-1.3**
(-1.5, -1.1) |
|
|
| Percentage of patients achieving HbA1c <7% |
42 |
35 |
7 |
22 |
| Fasting Plasma Glucose (mg/dL) (Mean) |
| Baseline |
174 |
177 |
171 |
179 |
| Change frombaseline (adjusted mean) b |
-29 |
-28 |
+18 |
-16 |
Difference from placebo + glimepiride arm (adjusted mean) b
95% Confidence Interval |
-47**
(-58, -35) |
-46**
(-58, -35) |
|
|
| Body Weight (kg) (Mean) |
| Baseline |
83.0 |
80.0 |
81.9 |
80.6 |
| Change frombaseline (adjusted mean) b |
-0.2 |
+0.3 |
-0.1 |
+2.1 |
Difference from placebo + glimepiride arm (adjusted mean) b
95% Confidence Interval |
-0.1
(-0.9, 0.6) |
0.4
(-0.4, 1.2) |
|
|
a Intent-to-treat population using last observation on study
b Least squares mean adjusted for baseline value
† For rosiglitazone, one-half of the maximal approved United States dose. **p-value <0.0001 |
Add-on to Metformin and Sulfonylurea
In this 26-week trial, 581 adult patients with type 2 diabetes mellitus were randomized to VICTOZA 1.8 mg, placebo, or insulin glargine, all as add-on to metformin and glimepiride. Randomization took place after a 6week run-in period consisting of a 3-week forced metformin and glimepiride titration period followed by a maintenance period of another 3 weeks. During the titration period, doses of metformin and glimepiride were to be increased up to 2,000 mg/day and 4 mg/day, respectively. After randomization, patients randomized to VICTOZA 1.8 mg underwent a 2 week period of titration with VICTOZA. During the trial, the VICTOZA and metformin doses were fixed, although glimepiride and insulin glargine doses could be adjusted. Patients titrated glargine twice-weekly during the first 8 weeks of treatment based on self-measured fasting plasma glucose on the day of titration. After Week 8, the frequency of insulin glargine titration was left to the discretion of the investigator, but, at a minimum, the glargine dose was to be revised, if necessary, at Weeks 12 and 18. Only 20% of glargine-treated patients achieved the pre-specified target fasting plasma glucose of ≤100 mg/dL. Therefore, optimal titration of the insulin glargine dose was not achieved in most patients.
The mean age of participants was 58 years, and the mean duration of diabetes was 9 years. Participants were 56.5% male, 75.0% White and 3.6% Black or African American. The mean BMI was 30.5 kg/m2.
Treatment with VICTOZA as add-on to glimepiride and metformin resulted in a statistically significant mean reduction in HbA1c compared to placebo add-on to glimepiride and metformin (Table 8). The percentage of patients who discontinued due to ineffective therapy was 0.9% in the VICTOZA 1.8 mg + metformin + glimepiride treatment group, 0.4% in the insulin glargine + metformin + glimepiride treatment group, and 11.3% in the placebo + metformin + glimepiride treatment group.
Table 8 Results of a 26-week Trial of VICTOZA as Add-on to Metformin and Sulfonylurea in Adult Patients with Type 2 Diabetes Mellitusa
|
VICTOZA
1.8 mg +
Metformin +
Glimepiride |
Placebo +
Metformin +
Glimepiride |
Insulin glargine†
+
Metformin +
Glimepiride |
| Intent-to-Treat Population (N) |
230 |
114 |
232 |
| HbA1c (%) (Mean) |
| Baseline |
8.3 |
8.3 |
8.1 |
| Change frombaseline (adjusted mean),b |
-1.3 |
-0.2 |
-1.1 |
Difference from placebo + metformin + glimepiride arm (adjusted mean),b
95% Confidence Interval |
-1.1**
(-1.3, -0.9) |
|
|
| Percentage of patients achieving HbA1c <7% |
53 |
15 |
46 |
| Fasting Plasma Glucose (mg/dL) (Mean) |
| Baseline |
165 |
170 |
164 |
| Change frombaseline (adjusted mean)b |
-28 |
+10 |
-32 |
Difference from placebo + metformin + glimepiride arm (adjusted mean)b
95% Confidence Interval |
-38**
(-46, -30) |
|
|
| Body Weight (kg) (Mean) |
| Baseline |
85.8 |
85.4 |
85.2 |
| Change frombaseline (adjusted mean)b |
-1.8 |
-0.4 |
1.6 |
Difference from placebo + metformin + glimepiride arm (adjusted mean)b
95% Confidence Interval |
-1.4*
(-2.1, -0.7) |
|
|
a Intent-to-treat population using last observation on study
b Least squares mean adjusted for baseline value
† For insulin glargine, optimal titration regimen was not achieved for 80% of patients.
*p-value <0.05
**p-value <0.0001 |
VICTOZA Compared to Exenatide, Both as Add-on to Metformin and/or Sulfonylurea Therapy
In this 26–week, open-label trial, 464 adult patients with type 2 diabetes mellitus on a background of metformin monotherapy, sulfonylurea monotherapy or a combination of metformin and sulfonylurea were randomized to once daily VICTOZA 1.8 mg or exenatide 10 mcg twice daily. Maximally tolerated doses of background therapy were to remain unchanged for the duration of the trial. Patients randomized to exenatide started on a dose of 5 mcg twice-daily for 4 weeks and then were escalated to 10 mcg twice daily.
The mean age of participants was 57 years, and the mean duration of diabetes was 8 years. Participants were 51.9% male, 91.8% White, 5.4% Black or African American and 12.3% of Hispanic or Latino ethnicity. The mean BMI was 32.9 kg/m2.
Treatment with VICTOZA 1.8 mg resulted in statistically significant reductions in HbA1c and FPG relative to exenatide (Table 9). The percentage of patients who discontinued for ineffective therapy was 0.4% in the VICTOZA treatment group and 0% in the exenatide treatment group. Both treatment groups had a mean decrease from baseline in body weight of approximately 3 kg.
Table 9 Results of a 26-week Open-label trial of VICTOZA versus Exenatide (both in combination with metformin and/or sulfonylurea) in Adult Patients with Type 2 Diabetes Mellitusa
|
VICTOZA
1.8 mg once daily
+ metformin and/or sulfonylurea |
Exenatide
10 mcg twice daily
+ metformin and/or sulfonylurea |
| Intent-to-Treat Population (N) |
233 |
231 |
| HbA1c (%) (Mean) |
|
|
| Baseline |
8.2 |
8.1 |
| Change from baseline (adjusted mean) b |
-1.1 |
-0.8 |
Difference from exenatide arm (adjusted mean) b
95% Confidence Interval |
-0.3**
(-0.5, -0.2) |
|
| Percentage of patients achieving HbA1c <7% |
54 |
43 |
| Fasting Plasma Glucose (mg/dL) (Mean) |
|
|
| Baseline |
176 |
171 |
| Change from baseline (adjusted mean) b |
-29 |
-11 |
Difference from exenatide arm (adjusted mean) ,b
95% Confidence Interval |
-18**
(-25, -12) |
|
a Intent-to-treat population using last observation carried forward
b Least squares mean adjusted for baseline value
**p-value <0.0001 |
Add-on to Metformin and Thiazolidinedione
In this 26-week trial, 533 adult patients with type 2 diabetes mellitus were randomized to VICTOZA 1.2 mg, VICTOZA 1.8 mg or placebo, all as add-on to rosiglitazone (8 mg) plus metformin (2,000 mg). Patients underwent a 9 week run-in period (3-week forced dose escalation followed by a 6-week dose maintenance phase) with rosiglitazone (starting at 4 mg and increasing to 8 mg/day within 2 weeks) and metformin (starting at 500 mg with increasing weekly increments of 500 mg to a final dose of 2,000 mg/day). Only patients who tolerated the final dose of rosiglitazone (8 mg/day) and metformin (2000 mg/day) and completed the 6-week dose maintenance phase were eligible for randomization into the trial.
The mean age of participants was 55 years, and the mean duration of diabetes was 9 years. Participants were 61.6% male, 84.2% White, 10.2% Black or African American and 16.4% of Hispanic or Latino ethnicity. The mean BMI was 33.9 kg/m2.
Treatment with VICTOZA as add-on to metformin and rosiglitazone produced a statistically significant reduction in mean HbA1c compared to placebo add-on to metformin and rosiglitazone (Table 10). The percentage of patients who discontinued due to ineffective therapy was 1.7% in the VICTOZA 1.8 mg + metformin + rosiglitazone treatment group, 1.7% in the VICTOZA 1.2 mg + metformin + rosiglitazone treatment group, and 16.4% in the placebo + metformin + rosiglitazone treatment group.
Table 10 Results of a 26-week Trial of VICTOZA as Add-on to Metformin and Thiazolidinedione in Adult Patients with Type 2 Diabetes Mellitusa
8.4
-0.5 8.4
-0.5
|
VICTOZA
1.8 mg +
Metformin +
Rosiglitazone |
VICTOZA
1.2 mg +
Metformin +
Rosiglitazone |
Placebo +
Metformin +
Rosiglitazone |
| Intent-to-Treat Population (N) |
178 |
177 |
175 |
| HbA1c (%) (Mean) |
| Baseline |
8.6 |
8.5 |
8.4 |
| Change from baseline (adjusted mean) b |
-1.5 |
-1.5 |
-0.5 |
Difference from placebo + metformin + rosiglitazone arm (adjusted mean) b
95% Confidence Interval |
-0.9**
(-1.1, -0.8) |
-0.9,**
(-1.1, -0.8) |
|
| Percentage of patients achieving HbA1c <7% |
54 |
57 |
28 |
| Fasting Plasma Glucose (mg/dL) (Mean) |
| Baseline |
185 |
181 |
179 |
| Change from baseline (adjusted mean) b |
-44 |
-40 |
-8 |
Difference from placebo + metformin + rosiglitazone arm (adjusted mean) b
95% Confidence Interval |
-36**
(-44, -27) |
-32**
(-41, -23) |
|
| Body Weight (kg) (Mean) |
| Baseline |
94.9 |
95.3 |
98.5 |
| Change from baseline (adjusted mean) b |
-2.0 |
-1.0 |
+0.6 |
Difference from placebo + metformin + rosiglitazone arm (adjusted mean)b
95% Confidence Interval |
-2.6**
(-3.4, -1.8) |
-1.6**
(-2.4, -1.0) |
|
a Intent-to-treat population using last observation on study
b Least squares mean adjusted for baseline value
**p-value <0.0001 |
VICTOZA Compared to Placebo Both With or Without metformin and/or Sulfonylurea and/or Pioglitazone and/or Basal or Premix insulin in Patients with Type 2 Diabetes Mellitus and Moderate Renal Impairment
In this 26-week, double-blind, randomized, placebo-controlled, parallel-group trial in adult patients with type 2 diabetes mellitus, 279 patients with moderate renal impairment, as per MDRD formula (eGFR 30−59 mL/min/1.73 m2), were randomized to VICTOZA or placebo once daily. VICTOZA was added to the patient’s stable pre-trial antidiabetic regimen (insulin therapy and/or metformin, pioglitazone, or sulfonylurea). The dose of VICTOZA was escalated according to approved labeling to achieve a dose of 1.8 mg per day. The insulin dose was reduced by 20% at randomization for patients with baseline HbA1c ≤ 8% and fixed until liraglutide dose escalation was complete. Dose reduction of insulin and SU was allowed in case of hypoglycemia; up titration of insulin was allowed but not beyond the pre-trial dose.
The mean age of participants was 67 years, and the mean duration of diabetes was 15 years. Participants were 50.5% male, 92.3% White, 6.6% Black or African American, and 7.2% of Hispanic or Latino ethnicity. The mean BMI was 33.9 kg/m2. Approximately half of patients had an eGFR between 30 and <45mL/min/1.73 m2.
Treatment with VICTOZA resulted in a statistically significant reduction in HbA1c from baseline at Week 26 compared to placebo (see Table 11). 123 patients reached the 1.8 mg dose of VICTOZA.
Table 11 Results of a 26-week Trial of VICTOZA Compared to Placebo in Adult Patients with Type 2 Diabetes Mellitus and Moderate Renal Impairmenta
|
VICTOZA 1.8 mg + insulin and/or OAD |
Placebo + insulin and/or OAD |
| Intent to Treat Population (N) |
140 |
137 |
| HbA1c (%) |
| Baseline (mean) |
8.1 |
8.0 |
| Change from baseline (estimated mean) b, c |
-0.9 |
-0.4 |
Difference from placebob, c
95% Confidence Interval |
-0.6*
(-0.8, -0.3) |
|
| Proportion achieving HbA1c < 7% d |
39.3 |
19.7 |
| FPG (mg/dL) |
| Baseline (mean) |
171 |
167 |
| Change from baseline (estimated mean) e |
-22 |
-10 |
Difference from placeboe
95% Confidence Interval |
-12**
(-23, -0.8) |
|
a Intent-to-treat population
b Estimated using a mixed model for repeated measurement with treatment, country, stratification groups as factors and baseline as a covariate, all nested within visit. Multiple imputation method modeled “wash out” of the treatment effect for patients having missing data who discontinued treatment.
c Early treatment discontinuation, before week 26, occurred in 25% and 22% of VICTOZA and placebo patients, respectively.
d Based on the known number of subjects achieving HbA1c < 7%. When applying the multiple imputation method described in b) above, the estimated percents achieving HbA1c < 7% are 47.6% and 24.9% for VICTOZA and placebo, respectively.
e Estimated using a mixed model for repeated measurement with treatment, country, stratification groups as factors and baseline as a covariate, all nested within visit.
*p-value <0.0001
**p-value <0.05 |
Glycemic Control Trial In Pediatric Patients Aged 10 Years And Older With Type 2 Diabetes Mellitus
VICTOZA was evaluated in a 26-week, double-blind, randomized, parallel group, placebo controlled multi-center trial (NCT01541215), in 134 pediatric patients with type 2 diabetes mellitus aged 10 years and older. Patients were randomized to VICTOZA once-daily or placebo once-daily in combination with metformin with or without basal insulin treatment. All patients were on a metformin dose of 1000 to 2000 mg prior to randomization. The basal insulin dose was decreased by 20% at randomization and VICTOZA was titrated weekly by 0.6 mg for 2 to 3 weeks based on tolerability and an average fasting plasma glucose goal of ≤110 mg/dL.
The mean age was 14.6 years: 29.9% were ages 10-14 years, and 70.1% were greater than 14 years of age. 38.1% were male, 64.9% were White, 13.4% were Asian, 11.9% were Black or African American; 29.1% were of Hispanic or Latino ethnicity. The mean BMI was 33.9 kg/m2 and the mean BMI SDS was 2.9. 18.7% of patients were using basal insulin at baseline. The mean duration of diabetes was 1.9 years and the mean HbA1c was 7.8%.
At week 26, treatment with VICTOZA was superior in reducing HbA1c from baseline versus placebo. The estimated treatment difference in HbA1c reduction from baseline between VICTOZA and placebo was -1.06% with a 95% confidence interval of [-1.65%; -0.46%] (see Table 12).
Table 12 Results at week 26 in a trial comparing VICTOZA in combination with metformin with or without basal insulin versus Placebo in combination with metformin with or without basal insulin in Pediatric Patients Aged 10 Years and Older with Type 2 Diabetes Mellitus
|
VICTOZA + metformin ± basal insulin |
Placebo + metformin ± basal insulin |
| N |
66 |
68 |
| HbA1c (%) |
| Baseline |
7.9 |
7.7 |
| End of 26 weeks |
7.1 |
8.2 |
| Adjusted mean change from baseline after 26 weeksa |
-0.64 |
0.42 |
Treatment difference [95% CI]
VICTOZA vs Placebo |
-1.06 [-1.65; -0.46]* |
| Percentage of patients achieving HbA1c <7%b |
63.7 |
36.5 |
| FPG (mg/dL) |
| Baseline |
157 |
147 |
| End of 26 weeks |
132 |
166 |
| Adjusted mean change from baseline after 26 weeksa |
-19.4 |
14.4 |
Treatment difference [95% CI]
VICTOZA vs Placebo |
-33.83 [-55.74 ; -11.92] |
a The change from baseline to end of treatment visit in HbA1c and FPG was analyzed using a pattern mixture model with multiple imputation. Missing observations (10.6% in the VICTOZA, 14.5% in the placebo) were imputed from the placebo arm based on multiple (x10,000) imputations. The data for week 26 was then analyzed with an ANCOVA model containing treatment, sex and age group as fixed effects and baseline value as covariate.
b Categories are derived from continuous measurements of HbA1c using a pattern mixture model with multiple imputation for missing observations.
* p-value <0.001 |
Cardiovascular Outcomes Trial In Adult Patients With Type 2 Diabetes Mellitus And Atherosclerotic Cardiovascular Disease
The LEADER trial (NCT01179048) was a multi-national, multi-center, placebo-controlled, double-blind trial. In this study, 9,340 adult patients with inadequately controlled type 2 diabetes mellitus and atherosclerotic cardiovascular disease (CVD) were randomized to VICTOZA 1.8 mg or placebo for a median duration of 3.5 years. The study compared the risk of major adverse cardiovascular events between VICTOZA and placebo when these were added to, and used concomitantly with, background standard of care treatments for type 2 diabetes mellitus. The primary endpoint, major adverse cardiac events (MACE), was the time to first occurrence of a three part composite outcome which included; cardiovascular death, non-fatal myocardial infarction and non-fatal stroke.
Patients eligible to enter the trial were; 50 years of age or older and had established, stable, cardiovascular, cerebrovascular, peripheral artery disease, chronic kidney disease or New York Heart Association (NYHA) class II and III heart failure (80% of the enrolled population) or were 60 years of age or older and had other specified risk factors for cardiovascular disease (20% of the enrolled population).
At baseline, demographic and disease characteristics were balanced. The mean age was 64 years and the population was 64.3% male, 77.5% White, 10.0% Asian, and 8.3% Black or African American. In the study, 12.1% of the population identified as Hispanic or Latino ethnicity. The mean duration of type 2 diabetes mellitus was 12.8 years, the mean HbA1c was 8.7% and the mean BMI was 32.5 kg/m2. A history of previous myocardial infarction was reported in 31% of randomized individuals, a prior revascularization procedure in 39%, a prior ischemic stroke in 11%, documented symptomatic coronary disease in 9%, documented asymptomatic cardiac ischemia in 26%, and a diagnosis of NYHA class II to III heart failure in 14%. The mean eGFR at baseline was 79 mL/min/1.73 m2 and 41.8% of patients had mild renal impairment (eGFR 60 to 90 mL/min/1.73m2), 20.7% had moderate renal impairment (eGFR 30 to 60 mL/min/1.73m2) and 2.4% of patients had severe renal impairment (eGFR < 30 mL/min/1.73m2).
At baseline, patients treated their diabetes with; diet and exercise only (3.9%), oral antidiabetic drugs only (51.5%), oral antidiabetic drugs and insulin (36.7%) or insulin only (7.9%). The most common background antidiabetic drugs used at baseline and in the trial were metformin, sulfonylurea and insulin. Use of DPP-4 inhibitors and other GLP-1 receptor agonists was excluded by protocol and sodium-glucose cotransporter-2 (SGLT-2) inhibitors were either not approved or not widely available. At baseline, cardiovascular disease and risk factors were managed with; non-diuretic antihypertensives (92.4%), diuretics (41.8%), statin therapy (72.1%) and platelet aggregation inhibitors (66.8%). During the trial, investigators could modify anti-diabetic and cardiovascular medications to achieve local standard of care treatment targets with respect to blood glucose, lipid, and blood pressure, and manage patients recovering from an acute coronary syndrome or stroke event per local treatment guidelines.
For the primary analysis, a Cox proportional hazards model was used to test for non-inferiority against the prespecified risk margin of 1.3 for the hazard ratio of MACE and to test for superiority on MACE if non-inferiority was demonstrated. Type 1 error was controlled across multiple tests.
VICTOZA significantly reduced the occurrence of MACE. The estimated hazard ratio (95% CI) for time to first MACE was 0.87 (0.78, 0.97). Refer to Figure 5 and Table 13.
Vital status was available for 99.7% of subjects in the trial. A total of 828 deaths were recorded during the LEADER trial. A majority of the deaths in the trial were categorized as cardiovascular deaths and non-cardiovascular deaths were balanced between the treatment groups (3.5% in patients treated with VICTOZA and 3.6% in patients treated with placebo). The estimated hazard ratio of time to all-cause death for VICTOZA compared to placebo was 0.85 (0.74, 0.97).
Figure 5 Kaplan-Meier: Time to First Occurrence of a MACE in the LEADER Trial (Patients with Type 2 Diabetes Mellitus and Atherosclerotic CVD)
Table 13 Treatment Effect for the Primary Composite Endpoint, MACE, and its Components in the LEADER Trial (Patients with Type 2 Diabetes Mellitus and Atherosclerotic CVD)a
|
VICTOZA
N=4668 |
Placebo
N=4672 |
Hazard Ratio
(95% CI)b |
Composite of cardiovascular death, non-fatal myocardial infarction, non-fatal stroke (MACE)
(time to first occurrence) c |
608 (13.0%) |
694 (14.9%) |
0.87 (0.78; 0.97) |
| Non-fatal myocardial infarctiond |
281 (6.0%) |
317 (6.8%) |
0.88 (0.75;1.03) |
| Non-fatal stroked |
159 (3.4%) |
177 (3.8%) |
0.89 (0.72;1.11) |
| Cardiovascular deathd |
219 (4.7%) |
278 (6%) |
0.78 (0.66;0.93) |
a Full analysis set (all randomized patients)
b Cox-proportional hazards model with treatment as a factor
c p-value for superiority (2-sided) 0.011
d Number and percentage of first events |