Clinical Trial Results:
A Phase 3, Randomized, Double-blind, Placebo-controlled, Parallel-group Study to Evaluate the Efficacy and Safety of Ranolazine When Added to Glimepiride in Subjects with Type 2 Diabetes Mellitus
Summary
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EudraCT number |
2011-000997-77 |
Trial protocol |
HU CZ PL SK |
Global end of trial date |
28 Aug 2013
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Results information
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Results version number |
v1(current) |
This version publication date |
22 Mar 2016
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First version publication date |
05 Aug 2015
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Other versions |
Trial Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
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Trial identification
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Sponsor protocol code |
GS-US-259-0110
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Additional study identifiers
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ISRCTN number |
- | ||
US NCT number |
NCT01494987 | ||
WHO universal trial number (UTN) |
- | ||
Sponsors
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Sponsor organisation name |
Gilead Sciences
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Sponsor organisation address |
333 Lakeside Drive, Foster City, CA, United States, 94404
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Public contact |
Clinical Trial Mailbox, Gilead Sciences International Ltd
, ClinicalTrialDisclosures@gilead.com
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Scientific contact |
Clinical Trial Mailbox, Gilead Sciences International Ltd, ClinicalTrialDisclosures@gilead.com
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Paediatric regulatory details
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Is trial part of an agreed paediatric investigation plan (PIP) |
No
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Does article 45 of REGULATION (EC) No 1901/2006 apply to this trial? |
No
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Does article 46 of REGULATION (EC) No 1901/2006 apply to this trial? |
No
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Results analysis stage
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Analysis stage |
Final
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Date of interim/final analysis |
28 Aug 2013
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Is this the analysis of the primary completion data? |
No
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Global end of trial reached? |
Yes
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Global end of trial date |
28 Aug 2013
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Was the trial ended prematurely? |
No
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General information about the trial
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Main objective of the trial |
This was a randomized, double-blind, placebo-controlled, parallel-group, multi-center study to determine the effect of ranolazine when added to glimepiride on glycemic control in adults with type 2 diabetes mellitus (T2DM) who are inadequately controlled despite current treatment with stable sulfonylurea or metformin therapy in addition to diet and exercise.
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Protection of trial subjects |
The protocol and consent/assent forms were submitted by each investigator to a duly constituted Independent Ethics Committee (IEC) or Institutional Review Board (IRB) for review and approval before study initiation. All revisions to the consent/assent forms (if applicable) after initial IEC/IRB approval were submitted by the investigator to the IEC/IRB for review and approval before implementation in accordance with regulatory requirements.
This study was conducted in accordance with recognized international scientific and ethical standards, including but not limited to the International Conference on Harmonization guideline for Good Clinical Practice (ICH GCP) and the original principles embodied in the Declaration of Helsinki.
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Background therapy |
Glimepiride stabilization period (up to 8 weeks): participants not on stable glimepiride received glimepiride 2 mg once daily, and if tolerated the dose was increased on Day 8 (+ 2 days) to 4 mg once daily. Treatment period: participants received glimepiride 4 mg once daily for 24 weeks. Participants were required to maintain their diet and exercise regimen. | ||
Evidence for comparator |
- | ||
Actual start date of recruitment |
12 Jan 2012
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Long term follow-up planned |
No
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Independent data monitoring committee (IDMC) involvement? |
Yes
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Population of trial subjects
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Number of subjects enrolled per country |
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Country: Number of subjects enrolled |
Poland: 9
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Country: Number of subjects enrolled |
Slovakia: 3
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Country: Number of subjects enrolled |
Czech Republic: 1
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Country: Number of subjects enrolled |
Hungary: 10
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Country: Number of subjects enrolled |
Russian Federation: 203
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Country: Number of subjects enrolled |
Ukraine: 53
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Country: Number of subjects enrolled |
United States: 121
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Country: Number of subjects enrolled |
Romania: 20
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Country: Number of subjects enrolled |
South Africa: 7
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Country: Number of subjects enrolled |
Serbia: 4
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Worldwide total number of subjects |
431
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EEA total number of subjects |
43
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Number of subjects enrolled per age group |
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In utero |
0
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Preterm newborn - gestational age < 37 wk |
0
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Newborns (0-27 days) |
0
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Infants and toddlers (28 days-23 months) |
0
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Children (2-11 years) |
0
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Adolescents (12-17 years) |
0
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Adults (18-64 years) |
314
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From 65 to 84 years |
117
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85 years and over |
0
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Recruitment
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Recruitment details |
Participants were enrolled (during the Qualifying Period) at a total of 103 study sites in Asia, Europe, South Africa, and the United States. The first participant was screened on 12 January 2012. The last participant observation occurred on 28 August 2013. | |||||||||||||||||||||||||||||||||
Pre-assignment
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Screening details |
595 participants entered the qualifying period (355 required and completed the glimepiride stabilization period); 431 were randomized and treated (Safety Analysis Set). Of these, 14 were excluded due to major eligibility criteria protocol violation or had no baseline or ontreatment data; thus, 417 were included in the Full Analysis Set. | |||||||||||||||||||||||||||||||||
Period 1
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Period 1 title |
Overall study (overall period)
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Is this the baseline period? |
Yes | |||||||||||||||||||||||||||||||||
Allocation method |
Randomised - controlled
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Blinding used |
Double blind | |||||||||||||||||||||||||||||||||
Roles blinded |
Subject, Investigator, Monitor, Data analyst, Carer, Assessor | |||||||||||||||||||||||||||||||||
Arms
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Are arms mutually exclusive |
Yes
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Arm title
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Placebo+Glimepiride | |||||||||||||||||||||||||||||||||
Arm description |
Glimepiride stabilization period (up to 8 weeks): participants not on stable glimepiride at a dose of 4 mg once daily received glimepiride 2 mg once daily, and if tolerated the dose was increased on Day 8 (+ 2 days) to 4 mg once daily. Qualifying period: participants received placebo to match ranolazine twice daily in addition to glimepiride for 14 days (+ 2 days) and if ≥ 80% compliant and meeting eligibility criteria continued to the treatment period. Treatment period: participants were randomized to receive placebo to match ranolazine plus glimepiride 4 mg once daily for 24 weeks. Participants were required to maintain their diet and exercise regimen. | |||||||||||||||||||||||||||||||||
Arm type |
Placebo | |||||||||||||||||||||||||||||||||
Investigational medicinal product name |
Placebo to match ranolazine
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Tablet
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Routes of administration |
Oral use
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Dosage and administration details |
Placebo to match ranolazine tablet(s) for the duration of the study
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Investigational medicinal product name |
Glimepiride
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Tablet
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Routes of administration |
Oral use
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Dosage and administration details |
Glimepiride tablets (2 mg or 4 mg) administered orally once daily with the morning dose of study drug or placebo. The target dosing regimen for glimepiride is 4 mg once daily.
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Arm title
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Ranolazine+Glimepiride | |||||||||||||||||||||||||||||||||
Arm description |
Glimepiride stabilization period (up to 8 weeks): participants not on stable glimepiride at a dose of 4 mg once daily received glimepiride 2 mg once daily, and if tolerated the dose was increased on Day 8 (+ 2 days) to 4 mg once daily. Qualifying period: participants received placebo to match ranolazine twice daily in addition to glimepiride for 14 days (+ 2 days) and if ≥ 80% compliant and meeting eligibility criteria continued to the treatment period. Treatment period: participants were randomized to receive ranolazine (1 x 500 mg tablet) twice daily plus glimepiride 4 mg once daily on Days 1 through 7, followed by ranolazine 1000 mg (2 x 500 mg tablets) twice daily plus glimepiride 4 mg once daily from Day 8 (or by Day 16 if not well tolerated) through Week 24. Participants were required to maintain their diet and exercise regimen. | |||||||||||||||||||||||||||||||||
Arm type |
Experimental | |||||||||||||||||||||||||||||||||
Investigational medicinal product name |
Ranolazine
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Investigational medicinal product code |
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Other name |
Ranexa®
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Pharmaceutical forms |
Tablet
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Routes of administration |
Oral use
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Dosage and administration details |
Ranolazine tablet(s) (1 or 2 x 500 mg) administered orally twice daily
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Investigational medicinal product name |
Glimepiride
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Tablet
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Routes of administration |
Oral use
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Dosage and administration details |
Glimepiride tablets (2 mg or 4 mg) administered orally once daily with the morning dose of study drug or placebo. The target dosing regimen for glimepiride was 4 mg once daily.
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Baseline characteristics reporting groups
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Reporting group title |
Placebo+Glimepiride
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Reporting group description |
Glimepiride stabilization period (up to 8 weeks): participants not on stable glimepiride at a dose of 4 mg once daily received glimepiride 2 mg once daily, and if tolerated the dose was increased on Day 8 (+ 2 days) to 4 mg once daily. Qualifying period: participants received placebo to match ranolazine twice daily in addition to glimepiride for 14 days (+ 2 days) and if ≥ 80% compliant and meeting eligibility criteria continued to the treatment period. Treatment period: participants were randomized to receive placebo to match ranolazine plus glimepiride 4 mg once daily for 24 weeks. Participants were required to maintain their diet and exercise regimen. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Ranolazine+Glimepiride
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Reporting group description |
Glimepiride stabilization period (up to 8 weeks): participants not on stable glimepiride at a dose of 4 mg once daily received glimepiride 2 mg once daily, and if tolerated the dose was increased on Day 8 (+ 2 days) to 4 mg once daily. Qualifying period: participants received placebo to match ranolazine twice daily in addition to glimepiride for 14 days (+ 2 days) and if ≥ 80% compliant and meeting eligibility criteria continued to the treatment period. Treatment period: participants were randomized to receive ranolazine (1 x 500 mg tablet) twice daily plus glimepiride 4 mg once daily on Days 1 through 7, followed by ranolazine 1000 mg (2 x 500 mg tablets) twice daily plus glimepiride 4 mg once daily from Day 8 (or by Day 16 if not well tolerated) through Week 24. Participants were required to maintain their diet and exercise regimen. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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End points reporting groups
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Reporting group title |
Placebo+Glimepiride
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Reporting group description |
Glimepiride stabilization period (up to 8 weeks): participants not on stable glimepiride at a dose of 4 mg once daily received glimepiride 2 mg once daily, and if tolerated the dose was increased on Day 8 (+ 2 days) to 4 mg once daily. Qualifying period: participants received placebo to match ranolazine twice daily in addition to glimepiride for 14 days (+ 2 days) and if ≥ 80% compliant and meeting eligibility criteria continued to the treatment period. Treatment period: participants were randomized to receive placebo to match ranolazine plus glimepiride 4 mg once daily for 24 weeks. Participants were required to maintain their diet and exercise regimen. | ||
Reporting group title |
Ranolazine+Glimepiride
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Reporting group description |
Glimepiride stabilization period (up to 8 weeks): participants not on stable glimepiride at a dose of 4 mg once daily received glimepiride 2 mg once daily, and if tolerated the dose was increased on Day 8 (+ 2 days) to 4 mg once daily. Qualifying period: participants received placebo to match ranolazine twice daily in addition to glimepiride for 14 days (+ 2 days) and if ≥ 80% compliant and meeting eligibility criteria continued to the treatment period. Treatment period: participants were randomized to receive ranolazine (1 x 500 mg tablet) twice daily plus glimepiride 4 mg once daily on Days 1 through 7, followed by ranolazine 1000 mg (2 x 500 mg tablets) twice daily plus glimepiride 4 mg once daily from Day 8 (or by Day 16 if not well tolerated) through Week 24. Participants were required to maintain their diet and exercise regimen. | ||
Subject analysis set title |
Placebo+Glimepiride FAS
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Subject analysis set type |
Full analysis | ||
Subject analysis set description |
Placebo+Glimepiride Full Analysis Set (FAS): randomized participants who received ≥ 1 dose of study treatment with a baseline and at least one postbaseline measurement of HbA1c, excluding participants with major eligibility violations and analyzed based on randomized treatment, regardless of actual treatment received.
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Subject analysis set title |
Ranolazine+Glimepiride FAS
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Subject analysis set type |
Full analysis | ||
Subject analysis set description |
Ranolazine+Glimepiride Full Analysis Set: randomized participants who received ≥ 1 dose of study treatment with a baseline and at least one postbaseline measurement of HbA1c, excluding participants with major eligibility violations and analyzed based on randomized treatment, regardless of actual treatment received.
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Subject analysis set title |
Placebo+Glimepiride MMTT FAS
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Subject analysis set type |
Sub-group analysis | ||
Subject analysis set description |
Placebo+Glimepiride Mixed Meal Tolerance Test (MMTT) Full Analysis Set: randomized participants who received at least one dose of study treatment with a baseline and at least one postbaseline measurement of serum glucose at T=120 minutes during the MMTT, administered under fasting conditions, excluding participants with major eligibility protocol violations, analyzed based on the randomized treatment regardless of actual treatment received.
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Subject analysis set title |
Ranolazine+Glimepiride MMTT FAS
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Subject analysis set type |
Sub-group analysis | ||
Subject analysis set description |
Ranolazine+Glimepiride MMTT Full Analysis Set: randomized participants who received at least one dose of study treatment with a baseline and at least one postbaseline measurement of serum glucose at T=120 minutes during the MMTT, administered under fasting conditions, excluding participants with major eligibility protocol violations, analyzed based on the randomized treatment regardless of actual treatment received.
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End point title |
Change From Baseline in Percent Glycosylated Hemoglobin (HbA1c) at Week 24 | ||||||||||||||||||
End point description |
The average (mean) change from baseline in HbA1c at Week 24 was analyzed. Participants in the Full Analysis Set with available data were analyzed.
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End point type |
Primary
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End point timeframe |
Baseline; Week 24
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Statistical analysis title |
Placebo vs Ranolazine: Change in Percent HbA1c | ||||||||||||||||||
Statistical analysis description |
Assuming a common standard deviation of 1.2%, an effective sample size of 400 would provide at least 90% power to detect a statistically significant treatment difference of -0.5% (ranolazine vs. placebo) for the reduction of HbA1c from baseline at Week 24 based on a 2-sided alpha of 0.05 and 1:1 randomization.
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Comparison groups |
Placebo+Glimepiride FAS v Ranolazine+Glimepiride FAS
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Number of subjects included in analysis |
372
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Analysis specification |
Pre-specified
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Analysis type |
other [1] | ||||||||||||||||||
P-value |
< 0.001 [2] | ||||||||||||||||||
Method |
Mixed Effects Model Analysis | ||||||||||||||||||
Parameter type |
difference in least squares mean (LSM) | ||||||||||||||||||
Point estimate |
-0.51
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Confidence interval |
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level |
95% | ||||||||||||||||||
sides |
2-sided
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lower limit |
-0.71 | ||||||||||||||||||
upper limit |
-0.32 | ||||||||||||||||||
Notes [1] - The primary analysis of the change from Baseline in HbA1c at Week 24 was performed using a mixed models repeated measures (MMRM) approach which accounts for correlations among observations within a subject, allows for baseline adjustment, and uses all available data. Effects include baseline HbA1c value, prior anti-hyperglycemic therapy, treatment group, visit week, and treatment group by visit week interaction term. [2] - P-value is from a mixed-effect model including terms for baseline HbA1c value, prior antihyperglycemia therapy, treatment group, visit week, and treatment by visit week interaction. Unstructured covariance matrix was used. |
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End point title |
Change From Baseline in Incremental Change of 2-hour Postprandial Serum Glucose at Week 24 | ||||||||||||
End point description |
The average (mean) change from baseline in incremental change of 2-hour postprandial serum glucose at Week 24 was analyzed. Participants in the Mixed Meal Tolerance Test (MMTT) Full Analysis Set with available data were analyzed.
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End point type |
Secondary
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End point timeframe |
Baseline; Week 24
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No statistical analyses for this end point |
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End point title |
Change From Baseline in Fasting Serum Glucose at Week 24 | ||||||||||||
End point description |
The average (mean) change from baseline in fasting serum glucose at Week 24 was analyzed. Participants in the Full Analysis Set with available data were analyzed.
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End point type |
Secondary
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End point timeframe |
Baseline; Week 24
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No statistical analyses for this end point |
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End point title |
Change From Baseline in 2-hour Postprandial Serum Glucose at Week 24 | ||||||||||||
End point description |
The average (mean) change from baseline in 2-hour postprandial serum glucose at Week 24 was analyzed. Participants in the MMTT Full Analysis Set with available data were analyzed.
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End point type |
Secondary
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End point timeframe |
Baseline; Week 24
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No statistical analyses for this end point |
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Adverse events information
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Timeframe for reporting adverse events |
Up to 24 weeks plus 30 days
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Assessment type |
Systematic | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary used for adverse event reporting
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Dictionary name |
MedDRA | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary version |
16.0
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Reporting groups
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Reporting group title |
Placebo+Glimepiride
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Reporting group description |
Glimepiride stabilization period (up to 8 weeks): participants not on stable glimepiride at a dose of 4 mg once daily received glimepiride 2 mg once daily, and if tolerated the dose was increased on Day 8 (+ 2 days) to 4 mg once daily. Qualifying period: participants received placebo to match ranolazine twice daily in addition to glimepiride for 14 days (+ 2 days) and if ≥ 80% compliant and meeting eligibility criteria continued to the treatment period. Treatment period: participants were randomized to receive placebo to match ranolazine plus glimepiride 4 mg once daily for 24 weeks. Participants were required to maintain their diet and exercise regimen. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Ranolazine+Glimepiride
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Reporting group description |
Glimepiride stabilization period (up to 8 weeks): participants not on stable glimepiride at a dose of 4 mg once daily received glimepiride 2 mg once daily, and if tolerated the dose was increased on Day 8 (+ 2 days) to 4 mg once daily. Qualifying period: participants received placebo to match ranolazine twice daily in addition to glimepiride for 14 days (+ 2 days) and if ≥ 80% compliant and meeting eligibility criteria continued to the treatment period. Treatment period: participants were randomized to receive ranolazine (1 x 500 mg tablet) twice daily plus glimepiride 4 mg once daily on Days 1 through 7, followed by ranolazine 1000 mg (2 x 500 mg tablets) twice daily plus glimepiride 4 mg once daily from Day 8 (or by Day 16 if not well tolerated) through Week 24. Participants were required to maintain their diet and exercise regimen. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Frequency threshold for reporting non-serious adverse events: 5% | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Substantial protocol amendments (globally) |
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Were there any global substantial amendments to the protocol? Yes | |||
Date |
Amendment |
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09 May 2012 |
Secondary efficacy endpoints were revised as follows: specified that the change from baseline in PPG through Week 24 was the incremental change of 2-hour PPG; and added the change from baseline in 2-hour PPG at Week 24 to the endpoint of change from baseline in FSG at Week 24. |
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07 Sep 2012 |
The exclusion criterion regarding participants undergoing dialysis treatments was modified to additionally exclude participants with severe renal impairment. |
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Interruptions (globally) |
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Were there any global interruptions to the trial? No | |||
Limitations and caveats |
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Limitations of the trial such as small numbers of subjects analysed or technical problems leading to unreliable data. | |||
None reported |