Clinical Trial Results:
The Effect of a SGLT2 inhibitor on Glucose flux, Lipolysis and Exercise in type 2 Diabetes
Summary
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EudraCT number |
2016-004878-17 |
Trial protocol |
GB |
Global end of trial date |
08 Jan 2020
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Results information
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Results version number |
v1(current) |
This version publication date |
15 May 2021
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First version publication date |
15 May 2021
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Other versions |
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Summary report(s) |
Abstract |
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 |
0585
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Additional study identifiers
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ISRCTN number |
- | ||
US NCT number |
NCT04219124 | ||
WHO universal trial number (UTN) |
- | ||
Sponsors
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Sponsor organisation name |
University of Leicester
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Sponsor organisation address |
Research Governance Office, Academic Department, Leicester General Hospital, Leicester, United Kingdom, LE5 4PW
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Public contact |
Roselle Herring, Royal Surrey County Hospital, +44 (0) 7777621085, roselle.herring@nhs.net
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Scientific contact |
Roselle Herring, Royal Surrey County Hospital, +44 (0) 7777621085, roselle.herring@nhs.net
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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 |
Interim
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Date of interim/final analysis |
26 Apr 2021
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Is this the analysis of the primary completion data? |
Yes
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Primary completion date |
08 Jan 2020
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Global end of trial reached? |
Yes
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Global end of trial date |
08 Jan 2020
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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 |
To determine the differences in mean concentration of 3-hydroxybutyrate between 420-480 mins and the AUC of 3-hydroxybutyrate concentration time curve between 0-240 mins and 0-480 mins following 4 week treatment with dapagliflozin compared to placebo in Visit 4 and visit 6 where the IMP was given at 0 mins.
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Protection of trial subjects |
This was not an efficacy study. All safety assessments were standard.
The study personnel were all trained on managing safety information according to agreed procedures.
During the study adverse events were collected and documented at every visit, regardless of relationship to study medication. these events were coded using MedDRA (medical Dictionary for Regulatory Activities) dictionary version 18.1 September 2015 checked by the study physician. The following criteria were used to identify adverse events:
Any unfavourable or unintended sign or symptom
Any deterioration in laboratory data, vital signs or found on physical examination
All concomitant medications taken during the study were recorded.
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Background therapy |
Allowable concomitant diabetes therapy: Metformin | ||
Evidence for comparator |
The type of control group: as it was a cross-over trial the participants acted as their own controls. The placebo and Dapagliflozin tablets were indistinguishable and provided in similar containers. Rationale behind design: A randomised double-blind placebo controlled study design was chosen to study the effect of dapagliflozin against a placebo treatment where both the participant and the research group were blinded to the order of the treatment received. Known or potential problems with design or control groups chosen in relation to the study: Using a cross-over trial can mean that a carry-over effect occurs from the first period to the second period of the trial. This was minimised by using a double blinded approach and by the presence of a four-week washout period between the treatment arms. Statistical analyses were conducted to determine whether a period effect was present. In this eventuality, comparisons between treatments were made solely at datta from period one. | ||
Actual start date of recruitment |
20 Sep 2018
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Long term follow-up planned |
No
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Independent data monitoring committee (IDMC) involvement? |
No
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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 |
United Kingdom: 13
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Worldwide total number of subjects |
13
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EEA total number of subjects |
13
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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) |
6
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From 65 to 84 years |
7
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85 years and over |
0
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Recruitment
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Recruitment details |
recruitment: From Diabetes Clinics at Cedar centre, Royal Surrey County Hospital and additional locations: local GP practices, other healthcare settings including but not limited to outpatient clinics, retinal screening, podiatry, diabetes patient groups, University of Surrey staff. Recruitment was between September 2018 and January 2020. | |||||||||
Pre-assignment
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Screening details |
There were no washout or pre assignment periods for screening. Interested patients with type 2 diabetes inadequately controlled by metformin were interviewed on the phone to confirm the inclusion criteria, 13 patients were recruited 4 patients were withdrawn. | |||||||||
Period 1
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Period 1 title |
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 | |||||||||
Blinding implementation details |
This is a double blind cross study. Subjects were randomised into 2 groups. One group received a once daily oral tablet of dapagliflozin for 4 weeks followed by a 4 week washout then once daily oral tablet of placebo for 4 weeks. The other group received a once daily oral tablet of placebo for 4 weeks followed by a 4 week washout then once daily oral intake of tablet of dapagliflozin for 4 week. the placebo and dapagliflozin tablets were indistinguishable.
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Arms
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Are arms mutually exclusive |
No
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Arm title
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Dapagliflozin | |||||||||
Arm description |
Dapagliflozin or placebo are considered as investigational medical product (IMP). Metformin is not considered an investigational product but is an allowed antidiabetic medication to be taken concomitantly. Investigational product: Dapagliflozin 10 mg Dosage form and strength: Green, plain, diamond shaped, film coated 10 mg tablet Manufacturer: AstraZeneca Ltd Investigational product: Matching placebo for Dapagliflozin 10 mg. Dosage form and strength: Green, plain, diamond shaped, and film coated tablet Dapagliflozin and its matching placebo will be supplied in bottles. The tablets contain lactose, which may cause discomfort in lactose-intolerant individuals. | |||||||||
Arm type |
cross over | |||||||||
Investigational medicinal product name |
Dapagliflozin
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Investigational medicinal product code |
461432-26-8, Cayman Chemical
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Other name |
Farxiga
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Pharmaceutical forms |
Tablet
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Routes of administration |
Oral use
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Dosage and administration details |
Investigational product: Matching placebo for Dapagliflozin 10 mg. Dosage form and strength: Green, plain, diamond shaped, and film coated tablet
Dapagliflozin and its matching placebo will be supplied in bottles. The tablets contain lactose, which may cause discomfort in lactose-intolerant individuals.
Used once daily
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Investigational medicinal product name |
Comparator to Dapagliflozin
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Investigational medicinal product code |
PL1
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Other name |
Placebo
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Pharmaceutical forms |
Tablet
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Routes of administration |
Oral use
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Dosage and administration details |
Investigational product: Matching placebo for Dapagliflozin 10 mg. Dosage form and strength: Green, plain, diamond shaped, and film coated tablet
Dapagliflozin and its matching placebo will be supplied in bottles. The tablets contain lactose, which may cause discomfort in lactose-intolerant individuals.
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Arm title
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placebo | |||||||||
Arm description |
Dapagliflozin and placebo are considered as investigational medicinal product (IMP). Metformon is not considered an investigational medicinal product. Investigational product: Dapagliflozin 10 mg Dosage form and strength: Green, plain, diamond shaped, film coated 10 mg tablet Manufacturer: AstraZeneca Ltd Investigational product: Matching placebo for Dapagliflozin 10 mg. Dosage form and strength: Green, plain, diamond shaped, and film coated tablet Dapagliflozin and its matching placebo will be supplied in bottles. The tablets contain lactose, which may cause discomfort in lactose-intolerant individuals. | |||||||||
Arm type |
cross over | |||||||||
Investigational medicinal product name |
Comparator to Dapagliflozin
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Investigational medicinal product code |
PL1
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Other name |
Placebo
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Pharmaceutical forms |
Tablet
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Routes of administration |
Oral use
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Dosage and administration details |
Investigational product: Dapagliflozin 10 mg Dosage form and strength: Green, plain, diamond shaped, film coated 10 mg tablet
Manufacturer: AstraZeneca Ltd
Investigational product: Matching placebo for Dapagliflozin 10 mg. Dosage form and strength: Green, plain, diamond shaped, and film coated tablet
Dapagliflozin and its matching placebo will be supplied in bottles. The tablets contain lactose, which may cause discomfort in lactose-intolerant individuals.
Used once daily
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Investigational medicinal product name |
Dapagliflozin
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Investigational medicinal product code |
461432-26-8, Cayman Chemical
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Other name |
Farxiga
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Pharmaceutical forms |
Tablet
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Routes of administration |
Oral use
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Dosage and administration details |
Investigational product: Dapagliflozin 10 mg Dosage form and strength: Green, plain, diamond shaped, film coated 10 mg tablet
Manufacturer: AstraZeneca Ltd
Investigational product: Matching placebo for Dapagliflozin 10 mg. Dosage form and strength: Green, plain, diamond shaped, and film coated tablet
Dapagliflozin and its matching placebo will be supplied in bottles. The tablets contain lactose, which may cause discomfort in lactose-intolerant individuals.
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Baseline characteristics reporting groups [1]
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Reporting group title |
Overall period
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Reporting group description |
Participants with type 2 diabetes completed both arm of the trial in the cross over study. Four participants were withdrawn from from the study, two participants while receiving dapagliflozin and two participants while receiving placebo. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Notes [1] - The number of subjects reported to be in the baseline period is not equal to the worldwide number of subjects enrolled in the trial. It is expected that these numbers will be the same. Justification: Justification- Baseline characteristics reported here are for those participants who completed the study that is n=9. |
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End points reporting groups
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Reporting group title |
Dapagliflozin
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Reporting group description |
Dapagliflozin or placebo are considered as investigational medical product (IMP). Metformin is not considered an investigational product but is an allowed antidiabetic medication to be taken concomitantly. Investigational product: Dapagliflozin 10 mg Dosage form and strength: Green, plain, diamond shaped, film coated 10 mg tablet Manufacturer: AstraZeneca Ltd Investigational product: Matching placebo for Dapagliflozin 10 mg. Dosage form and strength: Green, plain, diamond shaped, and film coated tablet Dapagliflozin and its matching placebo will be supplied in bottles. The tablets contain lactose, which may cause discomfort in lactose-intolerant individuals. | ||
Reporting group title |
placebo
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Reporting group description |
Dapagliflozin and placebo are considered as investigational medicinal product (IMP). Metformon is not considered an investigational medicinal product. Investigational product: Dapagliflozin 10 mg Dosage form and strength: Green, plain, diamond shaped, film coated 10 mg tablet Manufacturer: AstraZeneca Ltd Investigational product: Matching placebo for Dapagliflozin 10 mg. Dosage form and strength: Green, plain, diamond shaped, and film coated tablet Dapagliflozin and its matching placebo will be supplied in bottles. The tablets contain lactose, which may cause discomfort in lactose-intolerant individuals. |
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End point title |
Plasma concentration of 3-hydroxybutyrate Mean (420-480 min) | ||||||||||||
End point description |
Mean plasma concentration of 3-hydroxybutyrate measured at (420-480 min) following 4 weeks treatment with either dapagliflozin or Placebo (Visit 4 or Visit 6, depending on the randomisation) dapagliflozin was administered at 0 min.
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End point type |
Primary
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End point timeframe |
4 week once daily oral intake of dapagliflozin or Placebo tablets, blood samples obtained at 4 weeks (Visit 4 or Visit 6).
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Attachments |
BOHB concentration after a fat meal at 0min. |
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Statistical analysis title |
Superiority testing | ||||||||||||
Statistical analysis description |
This was a double blind cross-over study. BOHB concentration mean value for 420-480min was statistically analysed as the response variable in a general linear mixed model (using PROC Mixed procedure in SAS software), with treatment, period, treatment by period interaction, as fixed effects, and the baseline BOHB concentration as a covariate. The subject will be the random effects in the model. The denominator degrees of freedom will be adjusted using Kenward-Roger approximations.
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Comparison groups |
Dapagliflozin v placebo
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Number of subjects included in analysis |
18
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Analysis specification |
Pre-specified
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Analysis type |
superiority [1] | ||||||||||||
P-value |
= 0.015 [2] | ||||||||||||
Method |
Mixed models analysis | ||||||||||||
Parameter type |
Mean difference (final values) | ||||||||||||
Point estimate |
0.234
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Confidence interval |
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level |
95% | ||||||||||||
sides |
2-sided
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lower limit |
0.052 | ||||||||||||
upper limit |
0.415 | ||||||||||||
Variability estimate |
Standard error of the mean
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Dispersion value |
0.084
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Notes [1] - This was a double blind cross-over study. BOHB concentration mean value for 420-480min was statistically analysed as the response variable in a general linear mixed model (using PROC Mixed procedure in SAS software), with treatment, period, treatment by period interaction, as fixed effects, and the baseline BOHB concentration as a covariate. The subject will be the random effects in the model. The denominator degrees of freedom will be adjusted using Kenward-Roger approximations. [2] - significant at p <0.05 |
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End point title |
the AUC of 3-hydroxybutyrate concentration time curve between 0-240 mins | ||||||||||||
End point description |
Area under the curve for 3-hydroxybutyrate concentration (mmol/L *min) for period 0-240 mins, after an intake of 30 ml of olive oil containing 200 mg U labelled 13C Palmitic acid at 0 min, at the end of 4 weeks treatment with either dapagliflozin or placebo (visits V4 or V6, depending on randomisation). Dapagliflozin or Placebo was was taken orally at 0 min.
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End point type |
Primary
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End point timeframe |
4 week once daily oral in take of dapagliflozin or placebo, blood samples obtained at 4 weeks
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Statistical analysis title |
Superiority testing | ||||||||||||
Statistical analysis description |
This was a double blind cross-over study. BOHB concentration AUC 0-240 min was statistically analysed as the response variable in a general linear mixed model (using PROC Mixed procedure in SAS software), with treatment, period, treatment by period interaction, as fixed effects, and the baseline BOHB concentration as a covariate. The subject will be the random effects in the model. The denominator degrees of freedom will be adjusted using Kenward-Roger approximations.
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Comparison groups |
Dapagliflozin v placebo
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Number of subjects included in analysis |
18
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Analysis specification |
Pre-specified
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Analysis type |
superiority [3] | ||||||||||||
P-value |
= 0.081 [4] | ||||||||||||
Method |
Mixed models analysis | ||||||||||||
Parameter type |
Mean difference (final values) | ||||||||||||
Point estimate |
8.98
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Confidence interval |
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level |
95% | ||||||||||||
sides |
2-sided
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lower limit |
-2.518 | ||||||||||||
upper limit |
36.003 | ||||||||||||
Variability estimate |
Standard error of the mean
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Notes [3] - This was a double blind cross-over study. BOHB concentration AUC 0-240 min was statistically analysed as the response variable in a general linear mixed model (using PROC Mixed procedure in SAS software), with treatment, period, treatment by period interaction, as fixed effects, and the baseline BOHB concentration as a covariate. The subject will be the random effects in the model. The denominator degrees of freedom will be adjusted using Kenward-Roger approximations. [4] - not significant |
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End point title |
Plasma concentration of 3-hydroxybutyrate AUC(0-480 min) | ||||||||||||
End point description |
Area under the curve for 3-hydroxybutyrate concentration (mmol/L *min) for period 0-480 mins, after an intake of 30 ml of olive oil containing 200 mg U labelled 13C Palmitic acid at 0 min, at the end of 4 weeks treatment with either dapagliflozin or placebo (visits V4 or V6, depending on randomisation). Dapagliflozin or Placebo was was taken orally at 0 min.
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End point type |
Primary
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End point timeframe |
4 week once daily oral intake of dapagliflozin or Placebo tablets, blood samples obtained at 4 weeks (Visit 4 or Visit 6).
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Statistical analysis title |
Superiority testing | ||||||||||||
Statistical analysis description |
This was a double blind cross-over study. BOHB concentration AUC 0-480 min was statistically analysed as the response variable in a general linear mixed model (using PROC Mixed procedure in SAS software), with treatment, period, treatment by period interaction, as fixed effects, and the baseline BOHB concentration as a covariate. The subject will be the random effects in the model. The denominator degrees of freedom will be adjusted using Kenward-Roger approximations.
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Comparison groups |
Dapagliflozin v placebo
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Number of subjects included in analysis |
18
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Analysis specification |
Pre-specified
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Analysis type |
superiority [5] | ||||||||||||
P-value |
= 0.012 [6] | ||||||||||||
Method |
Mixed models analysis | ||||||||||||
Parameter type |
Mean difference (final values) | ||||||||||||
Point estimate |
57.68
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Confidence interval |
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level |
95% | ||||||||||||
sides |
2-sided
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lower limit |
14.95 | ||||||||||||
upper limit |
100.41 | ||||||||||||
Variability estimate |
Standard error of the mean
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Dispersion value |
19.92
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Notes [5] - This was a double blind cross-over study. BOHB concentration AUC 0-480 min was statistically analysed as the response variable in a general linear mixed model (using PROC Mixed procedure in SAS software), with treatment, period, treatment by period interaction, as fixed effects, and the baseline BOHB concentration as a covariate. The subject will be the random effects in the model. The denominator degrees of freedom will be adjusted using Kenward-Roger approximations. [6] - Significant at p<0.05 |
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Adverse events information
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Timeframe for reporting adverse events |
This includes events from the first trial activity after the subject has signed the informed consent and until post treatment follow
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Adverse event reporting additional description |
The following criteria were used to identify adverse events: Any unfavourable or unintended sign or symptom, any deterioration in laboratory data, vital signs or found physical examination.
All concomitant medications taken during the study were recorded.
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Assessment type |
Non-systematic | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary used for adverse event reporting
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Dictionary name |
MedDRA | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary version |
18.1
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Reporting groups
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Reporting group title |
Dapaglifolozin
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Reporting group description |
Investigational product: Dapagliflozin 10 mg Dosage form and strength: Green, plain, diamond shaped, film coated 10 mg tablet Manufacturer: AstraZeneca Ltd Investigational product: Matching placebo for Dapagliflozin 10 mg. Dosage form and strength: Green, plain, diamond shaped, and film coated tablet Dapagliflozin and its matching placebo will be supplied in bottles. The tablets contain lactose, which may cause discomfort in lactose-intolerant individuals. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
placebo
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Reporting group description |
Investigational product: Dapagliflozin 10 mg Dosage form and strength: Green, plain, diamond shaped, film coated 10 mg tablet Manufacturer: AstraZeneca Ltd Investigational product: Matching placebo for Dapagliflozin 10 mg. Dosage form and strength: Green, plain, diamond shaped, and film coated tablet Dapagliflozin and its matching placebo will be supplied in bottles. The tablets contain lactose, which may cause discomfort in lactose-intolerant individuals. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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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29 Jun 2017 |
1- Change of site for Final QP release and randomisation
2- updating of the protocol to reflect the source data will be entered into workbooks and then entered into CRFs. |
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19 Dec 2017 |
- Change of isotope and definition of primary and secondary end point
- due to the National shortage of IV palmidornate the study methodology had to be changed. This has resulted in a change in the statistical analysis. |
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01 Jun 2018 |
Notification to MHRA and HRA- We have been informed Renascience, the company which was providing the randomised, paired, kit numbers bottles containing 28 tablets of either placebo or active and shipping to Royal Surrey County Hospital research pharmacy for dispensing is restructuring. Renascience clinical trials service was also organising the randomisation and proving emergency randomisation codes. As a result of restructuring, Renaclinical Ltd has been created, MHRA authorisations held by Renascience have been realigned via a change of ownership process.
MIA (IMP) 44696 has been transferred to Renaclinical as MIA(IMP)49160.
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31 Oct 2018 |
1- Owing to difficulties in recruitment we would like to broaden our recruitment to allow us to approach patients in additional locations.
2- requesting permission to analyse blood taken during the metabolic study day for additional biomarkers of heart failure.
3- Extension of the study to 31/08/2019 as the green light was only received in August 2018. |
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25 Sep 2019 |
Extension of the study until 31/04/2020. owing to early recruitment difficulties and 4 people withdrawn from the study, some patients have been enrolled late and will be unable to complete the second arm of the study until December 2019. This will not incur any additional cost but means the lab analysis is delayed until early next year. |
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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. | |||
1- Urinary ketone excretion was not measured. 2- We were unable to recruit the whole quota for the patient group. This may have an impact on the level of significance on the metabolomics findings carried out on visit 4 and V6. |