Clinical Trial Results:
Multicenter, single-blind, adaptive dose finding study of single intravenous injections of BAY 1747846 with corresponding blinded read in adult participants with known or highly suspected CNS lesions referred for contrast-enhanced MRI of the CNS
Summary
|
|
EudraCT number |
2019-001560-30 |
Trial protocol |
DE BG |
Global end of trial date |
14 Dec 2022
|
Results information
|
|
Results version number |
v1(current) |
This version publication date |
25 Dec 2023
|
First version publication date |
25 Dec 2023
|
Other versions |
Trial Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
|
|||
Trial identification
|
|||
Sponsor protocol code |
BAY1747846/20241
|
||
Additional study identifiers
|
|||
ISRCTN number |
- | ||
US NCT number |
NCT04307186 | ||
WHO universal trial number (UTN) |
- | ||
Sponsors
|
|||
Sponsor organisation name |
Bayer AG
|
||
Sponsor organisation address |
Kaiser Wilhelm Allee, Leverkusen, Germany, D-51368
|
||
Public contact |
Therapeutic Area Head, Bayer AG, +49 30 300139003, clinical-trials-contact@bayer.com
|
||
Scientific contact |
Therapeutic Area Head, Bayer AG, +49 30 300139003, clinical-trials-contact@bayer.com
|
||
Paediatric regulatory details
|
|||
Is trial part of an agreed paediatric investigation plan (PIP) |
No
|
||
Does article 45 of REGULATION (EC) No 1901/2006 apply to this trial? |
No
|
||
Does article 46 of REGULATION (EC) No 1901/2006 apply to this trial? |
No
|
||
Results analysis stage
|
|||
Analysis stage |
Final
|
||
Date of interim/final analysis |
14 Dec 2022
|
||
Is this the analysis of the primary completion data? |
No
|
||
Global end of trial reached? |
Yes
|
||
Global end of trial date |
14 Dec 2022
|
||
Was the trial ended prematurely? |
No
|
||
General information about the trial
|
|||
Main objective of the trial |
To identify a dose of gadoquatrane for further development that has an overall diagnostic preference rate similar to that of the comparator gadobutrol at 5 min post injection.
|
||
Protection of trial subjects |
The conduct of this clinical study met all local legal and regulatory requirements. The study was conducted in accordance with ethical principles that have their origin in the Declaration of Helsinki and the International Council for Harmonization guideline E6: Good Clinical Practice. Before entering the study, the informed consent was read by and explained to all the subjects. Participating subjects signed informed consent form and could withdraw from the study at any time without any disadvantage and without having to provide a reason for this decision. Only investigators qualified by training and experience were selected as appropriate experts to investigate the study drug.
|
||
Background therapy |
- | ||
Evidence for comparator |
- | ||
Actual start date of recruitment |
18 Nov 2020
|
||
Long term follow-up planned |
No
|
||
Independent data monitoring committee (IDMC) involvement? |
No
|
||
Population of trial subjects
|
|||
Number of subjects enrolled per country |
|||
Country: Number of subjects enrolled |
Bulgaria: 9
|
||
Country: Number of subjects enrolled |
Germany: 13
|
||
Country: Number of subjects enrolled |
Japan: 22
|
||
Country: Number of subjects enrolled |
United States: 13
|
||
Worldwide total number of subjects |
57
|
||
EEA total number of subjects |
22
|
||
Number of subjects enrolled per age group |
|||
In utero |
0
|
||
Preterm newborn - gestational age < 37 wk |
0
|
||
Newborns (0-27 days) |
0
|
||
Infants and toddlers (28 days-23 months) |
0
|
||
Children (2-11 years) |
0
|
||
Adolescents (12-17 years) |
0
|
||
Adults (18-64 years) |
39
|
||
From 65 to 84 years |
16
|
||
85 years and over |
2
|
|
|||||||||||||||
Recruitment
|
|||||||||||||||
Recruitment details |
Study was conducted at 17 study centers in 4 countries between 18-Nov-2020 (first subject first visit) and 6-Sep-2022 (last subject last visit). | ||||||||||||||
Pre-assignment
|
|||||||||||||||
Screening details |
Of the 62 screened subjects 5 were screening failures, resulting in 57 subjects assigned to treatment who started with gadobutrol. | ||||||||||||||
Period 1
|
|||||||||||||||
Period 1 title |
Period 1 - Gadobutrol
|
||||||||||||||
Is this the baseline period? |
Yes | ||||||||||||||
Allocation method |
Non-randomised - controlled
|
||||||||||||||
Blinding used |
Single blind | ||||||||||||||
Roles blinded |
Subject | ||||||||||||||
Arms
|
|||||||||||||||
Arm title
|
Gadobutrol + Gadoquatrane | ||||||||||||||
Arm description |
Subjects received one intravenous (IV) injection of gadobutrol 0.1 millimole(s) gadolinium/kilogram body weight (mmol Gd/kg bw) during treatment Period 1 and one IV injection of gadoquatrane (BAY1747846) 0.04 mmol Gd/kg bw during treatment Period 2. | ||||||||||||||
Arm type |
Experimental | ||||||||||||||
Investigational medicinal product name |
Gadoquatrane
|
||||||||||||||
Investigational medicinal product code |
BAY1747846
|
||||||||||||||
Other name |
|||||||||||||||
Pharmaceutical forms |
Solution for injection
|
||||||||||||||
Routes of administration |
Intravenous use
|
||||||||||||||
Dosage and administration details |
Solution for IV injection, 0.04 mmol Gd/kg bw
|
||||||||||||||
Investigational medicinal product name |
Gadobutrol
|
||||||||||||||
Investigational medicinal product code |
|||||||||||||||
Other name |
Gadovist/Gadavist
|
||||||||||||||
Pharmaceutical forms |
Solution for injection
|
||||||||||||||
Routes of administration |
Intravenous use
|
||||||||||||||
Dosage and administration details |
Solution for IV injection, 0.1 mmol Gd/kg bw
|
||||||||||||||
|
|||||||||||||||
Period 2
|
|||||||||||||||
Period 2 title |
Washout 3-14 days
|
||||||||||||||
Is this the baseline period? |
No | ||||||||||||||
Allocation method |
Non-randomised - controlled
|
||||||||||||||
Blinding used |
Single blind | ||||||||||||||
Roles blinded |
Subject | ||||||||||||||
Arms
|
|||||||||||||||
Arm title
|
Gadobutrol + Gadoquatrane | ||||||||||||||
Arm description |
Subjects received one intravenous (IV) injection of gadobutrol 0.1 millimole(s) gadolinium/kilogram body weight (mmol Gd/kg bw) during treatment Period 1 and one IV injection of gadoquatrane (BAY1747846) 0.04 mmol Gd/kg bw during treatment Period 2. | ||||||||||||||
Arm type |
Experimental | ||||||||||||||
Investigational medicinal product name |
Gadobutrol
|
||||||||||||||
Investigational medicinal product code |
|||||||||||||||
Other name |
Gadovist/Gadavist
|
||||||||||||||
Pharmaceutical forms |
Solution for injection
|
||||||||||||||
Routes of administration |
Intravenous use
|
||||||||||||||
Dosage and administration details |
Solution for IV injection, 0.1 mmol Gd/kg bw
|
||||||||||||||
Investigational medicinal product name |
Gadoquatrane
|
||||||||||||||
Investigational medicinal product code |
BAY1747846
|
||||||||||||||
Other name |
|||||||||||||||
Pharmaceutical forms |
Solution for injection
|
||||||||||||||
Routes of administration |
Intravenous use
|
||||||||||||||
Dosage and administration details |
Solution for IV injection, 0.04 mmol Gd/kg bw
|
||||||||||||||
|
|||||||||||||||
Period 3
|
|||||||||||||||
Period 3 title |
Period 2 - Gadoquatrane
|
||||||||||||||
Is this the baseline period? |
No | ||||||||||||||
Allocation method |
Non-randomised - controlled
|
||||||||||||||
Blinding used |
Single blind | ||||||||||||||
Roles blinded |
Subject | ||||||||||||||
Arms
|
|||||||||||||||
Arm title
|
Gadobutrol + Gadoquatrane | ||||||||||||||
Arm description |
Subjects received one intravenous (IV) injection of gadobutrol 0.1 millimole(s) gadolinium/kilogram body weight (mmol Gd/kg bw) during treatment Period 1 and one IV injection of gadoquatrane (BAY1747846) 0.04 mmol Gd/kg bw during treatment Period 2. | ||||||||||||||
Arm type |
Experimental | ||||||||||||||
Investigational medicinal product name |
Gadobutrol
|
||||||||||||||
Investigational medicinal product code |
|||||||||||||||
Other name |
Gadovist/Gadavist
|
||||||||||||||
Pharmaceutical forms |
Solution for injection
|
||||||||||||||
Routes of administration |
Intravenous use
|
||||||||||||||
Dosage and administration details |
Solution for IV injection, 0.1 mmol Gd/kg bw
|
||||||||||||||
Investigational medicinal product name |
Gadoquatrane
|
||||||||||||||
Investigational medicinal product code |
BAY1747846
|
||||||||||||||
Other name |
|||||||||||||||
Pharmaceutical forms |
Solution for injection
|
||||||||||||||
Routes of administration |
Intravenous use
|
||||||||||||||
Dosage and administration details |
Solution for IV injection, 0.04 mmol Gd/kg bw
|
||||||||||||||
|
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Baseline characteristics reporting groups
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Gadobutrol + Gadoquatrane
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group description |
Subjects received one intravenous (IV) injection of gadobutrol 0.1 millimole(s) gadolinium/kilogram body weight (mmol Gd/kg bw) during treatment Period 1 and one IV injection of gadoquatrane (BAY1747846) 0.04 mmol Gd/kg bw during treatment Period 2. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
|||
End points reporting groups
|
|||
Reporting group title |
Gadobutrol + Gadoquatrane
|
||
Reporting group description |
Subjects received one intravenous (IV) injection of gadobutrol 0.1 millimole(s) gadolinium/kilogram body weight (mmol Gd/kg bw) during treatment Period 1 and one IV injection of gadoquatrane (BAY1747846) 0.04 mmol Gd/kg bw during treatment Period 2. | ||
Reporting group title |
Gadobutrol + Gadoquatrane
|
||
Reporting group description |
Subjects received one intravenous (IV) injection of gadobutrol 0.1 millimole(s) gadolinium/kilogram body weight (mmol Gd/kg bw) during treatment Period 1 and one IV injection of gadoquatrane (BAY1747846) 0.04 mmol Gd/kg bw during treatment Period 2. | ||
Reporting group title |
Gadobutrol + Gadoquatrane
|
||
Reporting group description |
Subjects received one intravenous (IV) injection of gadobutrol 0.1 millimole(s) gadolinium/kilogram body weight (mmol Gd/kg bw) during treatment Period 1 and one IV injection of gadoquatrane (BAY1747846) 0.04 mmol Gd/kg bw during treatment Period 2. | ||
Subject analysis set title |
Gadobutrol post-contrast
|
||
Subject analysis set type |
Sub-group analysis | ||
Subject analysis set description |
MR images were taken 5 min after receiving IV injection of gadobutrol.
|
||
Subject analysis set title |
Gadoquatrane post-contrast
|
||
Subject analysis set type |
Sub-group analysis | ||
Subject analysis set description |
MR images were taken 5 min after receiving IV injection of gadoquatrane.
|
||
Subject analysis set title |
Gadobutrol pre-contrast
|
||
Subject analysis set type |
Sub-group analysis | ||
Subject analysis set description |
MR images were taken before receiving IV injection of gadobutrol.
|
||
Subject analysis set title |
Gadobutrol combined pre- and post-contrast
|
||
Subject analysis set type |
Sub-group analysis | ||
Subject analysis set description |
Evaluation of the combined MR image sets taken before and 5 min after receiving IV injection of gadobutrol.
|
||
Subject analysis set title |
Gadoquatrane pre-contrast
|
||
Subject analysis set type |
Sub-group analysis | ||
Subject analysis set description |
MR images were taken before receiving IV injection of gadoquatrane.
|
||
Subject analysis set title |
Gadoquatrane combined pre- and post-contrast
|
||
Subject analysis set type |
Sub-group analysis | ||
Subject analysis set description |
Evaluation of the combined MR image sets taken before and 5 min after receiving IV injection of gadoquatrane.
|
||
Subject analysis set title |
Full analysis set (FAS)
|
||
Subject analysis set type |
Full analysis | ||
Subject analysis set description |
All subjects who have completed magnetic resonance (MR) image datasets that qualify for blinded read.
|
||
Subject analysis set title |
Safety analysis set (SAF)
|
||
Subject analysis set type |
Safety analysis | ||
Subject analysis set description |
All subjects who received any dose of study intervention
|
|
|||||||||||||||||||||||||||
End point title |
Overall diagnostic preference [1] | ||||||||||||||||||||||||||
End point description |
Overall diagnostic preference using a matched pairs approach was evaluated by 3 blinded readers using an ordinal 5-point scale (greatly prefer gadoquatrane, prefer gadoquatrane, no preference, prefer gadobutrol, greatly prefer gadobutrol). Percentage of participants and the respective Wald confidence intervals (CI) for image preference were reported for each of the 3 readers based on the 3-point preference scale (1=greatly prefer/prefer gadoquatrane, 0=no preference, -1=greatly prefer/prefer gadobutrol). If 2 or 3 readers reach the same conclusion on the recommended action (e.g. no dose adjustment needed), then this will be the recommended action taken.
|
||||||||||||||||||||||||||
End point type |
Primary
|
||||||||||||||||||||||||||
End point timeframe |
At 5 minute post each injection
|
||||||||||||||||||||||||||
Notes [1] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point. Justification: Statistical analyses were provided as an attachment |
|||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||
Attachments |
Untitled (Filename: 20241_Statistical Analyses_Primary.pdf) |
||||||||||||||||||||||||||
Notes [2] - FAS |
|||||||||||||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||||||||||
End point title |
Sum of lesion visualization parameters on post-contrast images | ||||||||||||||||||||||||
End point description |
The 3 lesion visualization parameters (border delineation/degree of contrast enhancement/internal morphology) were combined by adding them up for each participant and each blinded reader, leading to only one variable on an ordinal 11-point scale (the higher values represent a better lesion visualization). Average reader was the mean of the 3 blinded readers averages of the scores per participant. Lesion border delineation: measured on a 4-point scale (1=None [no/unclear delineation of the lesion boundaries] to 4=Excellent [clear and complete delineation]). Degree of lesion contrast enhancement: measured on a 4-point scale (1=No [lesion is not enhanced] to 4=Excellent [lesion is clearly and brightly enhanced]). Lesion internal morphology: measured on a 3-point scale (1=Poor [structure and internal morphology of the lesion is poorly visible] to 3=Good [structure and internal morphology of the lesion is sufficiently visible]).
|
||||||||||||||||||||||||
End point type |
Secondary
|
||||||||||||||||||||||||
End point timeframe |
At 5 minute post each injection
|
||||||||||||||||||||||||
|
|||||||||||||||||||||||||
Notes [3] - FAS [4] - FAS |
|||||||||||||||||||||||||
Statistical analysis title |
Average reader | ||||||||||||||||||||||||
Statistical analysis description |
The non-inferiority of gadoquatrane versus gadobutrol was evaluated using CIs based on the t-distribution. A non-inferiority margin of 1 was used, i.e. meaning that a 95% two-sided CI for the mean difference gadoquatrane minus gadobutrol score must exclude the value -1. Number of subjects in this analysis is 49.
|
||||||||||||||||||||||||
Comparison groups |
Gadoquatrane post-contrast v Gadobutrol post-contrast
|
||||||||||||||||||||||||
Number of subjects included in analysis |
100
|
||||||||||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||||||||||
Analysis type |
non-inferiority | ||||||||||||||||||||||||
P-value |
< 0.0001 [5] | ||||||||||||||||||||||||
Method |
t-test, 1-sided | ||||||||||||||||||||||||
Parameter type |
Mean difference (final values) | ||||||||||||||||||||||||
Point estimate |
-0.05
|
||||||||||||||||||||||||
Confidence interval |
|||||||||||||||||||||||||
level |
95% | ||||||||||||||||||||||||
sides |
2-sided
|
||||||||||||||||||||||||
lower limit |
-0.24 | ||||||||||||||||||||||||
upper limit |
0.13 | ||||||||||||||||||||||||
Notes [5] - P-Value was calculated. Non-inferiority was achieved with a one-sided p-value lower than 0.025. |
|
|||||||||||||||||||||||||||||||||||||||||
End point title |
Lesion visualization parameter border delineation on pre-contrast and combined pre- and post-contrast images | ||||||||||||||||||||||||||||||||||||||||
End point description |
Lesion border delineation: up to 5 of the largest lesions were selected and scored using a 4-point scale (1=None [no/unclear delineation of the lesion boundaries] to 4=Excellent [clear and complete delineation]; the higher values represent a better lesion border delineation). Average reader was the mean of the 3 blinded readers averages of the scores per participant.
|
||||||||||||||||||||||||||||||||||||||||
End point type |
Secondary
|
||||||||||||||||||||||||||||||||||||||||
End point timeframe |
At pre-injection and 5 minute post each injection
|
||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||
Notes [6] - FAS [7] - FAS [8] - FAS [9] - FAS |
|||||||||||||||||||||||||||||||||||||||||
Statistical analysis title |
Average Reader - gadoquatrane | ||||||||||||||||||||||||||||||||||||||||
Statistical analysis description |
95% two-sided CIs based on a t-distribution for the difference of combined pre- and post-contrast minus pre-contrast scores. Parameter estimate was the descriptive comparison of the result following gadobutrol with the result following gadoquatrane. Number of subjects in this analysis is 39.
|
||||||||||||||||||||||||||||||||||||||||
Comparison groups |
Gadoquatrane combined pre- and post-contrast v Gadoquatrane pre-contrast
|
||||||||||||||||||||||||||||||||||||||||
Number of subjects included in analysis |
100
|
||||||||||||||||||||||||||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||||||||||||||||||||||||||
Analysis type |
other | ||||||||||||||||||||||||||||||||||||||||
Method |
|||||||||||||||||||||||||||||||||||||||||
Parameter type |
Mean difference (final values) | ||||||||||||||||||||||||||||||||||||||||
Point estimate |
1.1
|
||||||||||||||||||||||||||||||||||||||||
Confidence interval |
|||||||||||||||||||||||||||||||||||||||||
level |
95% | ||||||||||||||||||||||||||||||||||||||||
sides |
2-sided
|
||||||||||||||||||||||||||||||||||||||||
lower limit |
0.94 | ||||||||||||||||||||||||||||||||||||||||
upper limit |
1.25 | ||||||||||||||||||||||||||||||||||||||||
Statistical analysis title |
Average Reader - gadobutrol | ||||||||||||||||||||||||||||||||||||||||
Statistical analysis description |
95% two-sided CIs based on a t-distribution for the difference of combined pre- and post-contrast minus pre-contrast scores. Parameter estimate was the descriptive comparison of the result following gadobutrol with the result following gadoquatrane. Number of subjects in this analysis is 39.
|
||||||||||||||||||||||||||||||||||||||||
Comparison groups |
Gadobutrol combined pre- and post-contrast v Gadobutrol pre-contrast
|
||||||||||||||||||||||||||||||||||||||||
Number of subjects included in analysis |
100
|
||||||||||||||||||||||||||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||||||||||||||||||||||||||
Analysis type |
other | ||||||||||||||||||||||||||||||||||||||||
Method |
|||||||||||||||||||||||||||||||||||||||||
Parameter type |
Mean difference (final values) | ||||||||||||||||||||||||||||||||||||||||
Point estimate |
1.2
|
||||||||||||||||||||||||||||||||||||||||
Confidence interval |
|||||||||||||||||||||||||||||||||||||||||
level |
95% | ||||||||||||||||||||||||||||||||||||||||
sides |
2-sided
|
||||||||||||||||||||||||||||||||||||||||
lower limit |
1.06 | ||||||||||||||||||||||||||||||||||||||||
upper limit |
1.34 |
|
|||||||||||||||||||||||||||||||||||||||||
End point title |
Lesion visualization parameter contrast enhancement on pre-contrast and combined pre- and post-contrast images | ||||||||||||||||||||||||||||||||||||||||
End point description |
Degree of lesion contrast enhancement: up to the 5 largest lesions were selected and scored using a 4-point scale (1=No [lesion is not enhanced] to 4=Excellent [lesion is clearly and brightly enhanced]; the higher values represent a better degree of lesion contrast enhancement). Average reader was the mean of the 3 blinded readers averages of the scores per participant.
|
||||||||||||||||||||||||||||||||||||||||
End point type |
Secondary
|
||||||||||||||||||||||||||||||||||||||||
End point timeframe |
At pre-injection and 5 minute post each injection
|
||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||
Notes [10] - FAS [11] - FAS [12] - FAS [13] - FAS |
|||||||||||||||||||||||||||||||||||||||||
Statistical analysis title |
Average Reader - gadoquatrane | ||||||||||||||||||||||||||||||||||||||||
Statistical analysis description |
95% two-sided CIs based on a t-distribution for the difference of combined pre- and post-contrast minus pre-contrast scores. Parameter estimate was the descriptive comparison of the result following gadobutrol with the result following gadoquatrane. Number of subjects in this analysis is 39.
|
||||||||||||||||||||||||||||||||||||||||
Comparison groups |
Gadoquatrane combined pre- and post-contrast v Gadoquatrane pre-contrast
|
||||||||||||||||||||||||||||||||||||||||
Number of subjects included in analysis |
100
|
||||||||||||||||||||||||||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||||||||||||||||||||||||||
Analysis type |
other | ||||||||||||||||||||||||||||||||||||||||
Method |
|||||||||||||||||||||||||||||||||||||||||
Parameter type |
Mean difference (final values) | ||||||||||||||||||||||||||||||||||||||||
Point estimate |
2.06
|
||||||||||||||||||||||||||||||||||||||||
Confidence interval |
|||||||||||||||||||||||||||||||||||||||||
level |
95% | ||||||||||||||||||||||||||||||||||||||||
sides |
2-sided
|
||||||||||||||||||||||||||||||||||||||||
lower limit |
1.86 | ||||||||||||||||||||||||||||||||||||||||
upper limit |
2.25 | ||||||||||||||||||||||||||||||||||||||||
Statistical analysis title |
Average Reader - gadobutrol | ||||||||||||||||||||||||||||||||||||||||
Statistical analysis description |
95% two-sided CIs based on a t-distribution for the difference of combined pre- and post-contrast minus pre-contrast scores. Parameter estimate was the descriptive comparison of the result following gadobutrol with the result following gadoquatrane. Number of subjects in this analysis is 39.
|
||||||||||||||||||||||||||||||||||||||||
Comparison groups |
Gadobutrol combined pre- and post-contrast v Gadobutrol pre-contrast
|
||||||||||||||||||||||||||||||||||||||||
Number of subjects included in analysis |
100
|
||||||||||||||||||||||||||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||||||||||||||||||||||||||
Analysis type |
other | ||||||||||||||||||||||||||||||||||||||||
Method |
|||||||||||||||||||||||||||||||||||||||||
Parameter type |
Mean difference (final values) | ||||||||||||||||||||||||||||||||||||||||
Point estimate |
2.07
|
||||||||||||||||||||||||||||||||||||||||
Confidence interval |
|||||||||||||||||||||||||||||||||||||||||
level |
95% | ||||||||||||||||||||||||||||||||||||||||
sides |
2-sided
|
||||||||||||||||||||||||||||||||||||||||
lower limit |
1.87 | ||||||||||||||||||||||||||||||||||||||||
upper limit |
2.28 |
|
|||||||||||||||||||||||||||||||||||||||||
End point title |
Lesion visualization parameter internal morphology on pre-contrast and combined pre- and post-contrast images | ||||||||||||||||||||||||||||||||||||||||
End point description |
Lesion internal morphology: up to 5 of the largest lesions were selected and scored using a 3-point scale (1=Poor [structure and internal morphology of the lesion is poorly visible] to 3=Good [structure and internal morphology of the lesion is sufficiently visible]; the higher values represent a better lesion internal morphology). Average reader was the mean of the 3 blinded readers averages of the scores per participant.
|
||||||||||||||||||||||||||||||||||||||||
End point type |
Secondary
|
||||||||||||||||||||||||||||||||||||||||
End point timeframe |
At pre-injection and 5 minute post each injection
|
||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||
Notes [14] - FAS [15] - FAS [16] - FAS [17] - FAS |
|||||||||||||||||||||||||||||||||||||||||
Statistical analysis title |
Average Reader - gadoquatrane | ||||||||||||||||||||||||||||||||||||||||
Statistical analysis description |
95% two-sided CIs based on a t-distribution for the difference of combined pre- and post-contrast minus pre-contrast scores. Parameter estimate was the descriptive comparison of the result following gadobutrol with the result following gadoquatrane. Number of subjects in this analysis is 39.
|
||||||||||||||||||||||||||||||||||||||||
Comparison groups |
Gadoquatrane combined pre- and post-contrast v Gadoquatrane pre-contrast
|
||||||||||||||||||||||||||||||||||||||||
Number of subjects included in analysis |
100
|
||||||||||||||||||||||||||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||||||||||||||||||||||||||
Analysis type |
other | ||||||||||||||||||||||||||||||||||||||||
Method |
|||||||||||||||||||||||||||||||||||||||||
Parameter type |
Mean difference (final values) | ||||||||||||||||||||||||||||||||||||||||
Point estimate |
1.19
|
||||||||||||||||||||||||||||||||||||||||
Confidence interval |
|||||||||||||||||||||||||||||||||||||||||
level |
95% | ||||||||||||||||||||||||||||||||||||||||
sides |
2-sided
|
||||||||||||||||||||||||||||||||||||||||
lower limit |
1.05 | ||||||||||||||||||||||||||||||||||||||||
upper limit |
1.32 | ||||||||||||||||||||||||||||||||||||||||
Statistical analysis title |
Average Reader - gadobutrol | ||||||||||||||||||||||||||||||||||||||||
Statistical analysis description |
95% two-sided CIs based on a t-distribution for the difference of combined pre- and post-contrast minus pre-contrast scores. Parameter estimate was the descriptive comparison of the result following gadobutrol with the result following gadoquatrane. Number of subjects in this analysis is 39.
|
||||||||||||||||||||||||||||||||||||||||
Comparison groups |
Gadobutrol combined pre- and post-contrast v Gadobutrol pre-contrast
|
||||||||||||||||||||||||||||||||||||||||
Number of subjects included in analysis |
100
|
||||||||||||||||||||||||||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||||||||||||||||||||||||||
Analysis type |
other | ||||||||||||||||||||||||||||||||||||||||
Method |
|||||||||||||||||||||||||||||||||||||||||
Parameter type |
Mean difference (final values) | ||||||||||||||||||||||||||||||||||||||||
Point estimate |
1.27
|
||||||||||||||||||||||||||||||||||||||||
Confidence interval |
|||||||||||||||||||||||||||||||||||||||||
level |
95% | ||||||||||||||||||||||||||||||||||||||||
sides |
2-sided
|
||||||||||||||||||||||||||||||||||||||||
lower limit |
1.11 | ||||||||||||||||||||||||||||||||||||||||
upper limit |
1.43 |
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
End point title |
Number of lesions on pre-contrast and combined pre- and post-contrast images | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
End point description |
The 3 blinded readers recorded the total number of lesions for each pre-contrast and combined pre- and post-contrast magnetic resonance image set separately. The numbers of subjects by number of detected lesions were reported. For Reader 2, the number of subjects analyzed for each reporting groups are: 48, 49, 49, 49.
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
End point type |
Secondary
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
End point timeframe |
At pre-injection and 5 minute post injection
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Notes [18] - FAS [19] - FAS [20] - FAS [21] - FAS |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
No statistical analyses for this end point |
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Adverse events information
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Timeframe for reporting adverse events |
Adverse events tables: up to the 24 h ± 4 h follow-up time point following Gadobutrol or Gadoquatrane injection. Adverse event reporting for the deaths (all causes): after signing informed consent up to the last contact per participant, up to 36 days.
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Assessment type |
Non-systematic | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary used for adverse event reporting
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary name |
MedDRA | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary version |
25.1
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting groups
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Gadoquatrane
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group description |
Subjects received one intravenous (IV) injection of gadoquatrane (BAY1747846) 0.04 millimole(s) gadolinium/kilogram body weight (mmol Gd/kg bw) during treatment Period 2. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Gadobutrol
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group description |
Subjects received one IV injection of gadobutrol 0.1 mmol Gd/kg bw during treatment Period 1. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Frequency threshold for reporting non-serious adverse events: 0% | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
|||
Substantial protocol amendments (globally) |
|||
Were there any global substantial amendments to the protocol? Yes | |||
Date |
Amendment |
||
29 Jul 2021 |
Incorporated an interim analysis to facilitate the planning of future phases of development. Furthermore the inclusion criterion pertaining to eGFR at baseline was clarified and two exclusion criteria were adapted. |
||
06 Jan 2022 |
To fulfill the FDA request to add secondary endpoints to the study (lesion visualization parameters and number of lesions). |
||
Interruptions (globally) |
|||
Were there any global interruptions to the trial? No | |||
Limitations and caveats |
|||
Limitations of the trial such as small numbers of subjects analysed or technical problems leading to unreliable data. | |||
None reported |