Coronary Artery DiseasePhase 3GadaCAD 2NCT01890434
Gadobutrol / Gadavist-enhanced Cardiac Magnetic Resonance Imaging (CMRI) to Detect Coronary Artery Disease (CAD)
A Phase 3 study testing Gadobutrol (Gadavist, Gadovist, BAY86-4875) in people with Coronary Artery Disease, run by Bayer at 24 sites in 4 countries.
Trial summary
Subjects being evaluated for suspected or known Coronary artery Disease (CAD) based on signs and/or symptoms, will be invited to participate in the study. The duration for a subject in the study may range from 2 days to 4-6 weeks. One to four visits to the study doctor will be required. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Coronary Artery Disease
- What is being tested?
- Gadobutrol (Gadavist, Gadovist, BAY86-4875)
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 478 participants
- Where
- 24 sitesin 4 countries
- Study dates
- 26 Aug 2013to 10 Nov 2016
- Phase
- Phase 3
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Male or female subjects aged ≥18 years
- Subjects with suspected or known CAD based on signs and/or (typical or atypical) chest pain who have routine CA without intervention within plus/minus 4 weeks of gadobutrol-enhanced CMRI or subjects at low risk of CAD with / or scheduled to get a CTA for the purpose of exclusion of CAD within plus/minus 6 weeks of gadobutrol-enhanced CMRI
- Willingness to undergo unenhanced wall motion and gadobutrol-enhanced CMRI at stress/rest and gated single photon emission computed tomography (GSPECT, if GSPECT will be a study procedure)
- Women of childbearing potential (e.g. age < 60y, no history of surgical sterilization or hysterectomy): use of contraception and a negative pregnancy test
- Subjects who are scheduled for / have undergone routine GSPECT or undergo GSPECT as a study procedure at stress and at rest within ± 4 weeks of gadobutrol-enhanced CMRI
Who cannot join
- Suspected clinical instability or unpredictability of the clinical course during the study period
- Contraindication to the cardiac MRI examination (e.g. inability to hold breath; severe claustrophobia, metallic devices such as pace makers)
- History of severe allergic or anaphylactoid reaction to any allergen including drugs and contrast agents according to the investigator's assessment / judgment
- Estimated glomerular filtration rate (eGFR) value <30 mL/min/1.73 m^2 derived from a serum / blood creatinine result within 2 weeks prior to gadobutrol injection. Any subject on hemodialysis or peritoneal dialysis is excluded from enrollment.
- Acute renal insufficiency
- Coronary artery bypass grafting (CABG)
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- Acute myocardial infarction (< 14 days prior to inclusion), unstable angina / acute coronary syndrome, severe congestive heart failure
- Irregular heart rhythm
- Condition that precludes the safe administration of pharmacological stressor according to the respective approved label such as sinus node disease, 2nd or 3rd degree atrioventricular block, obstructive lung disease
Trial locations and contacts
24 sites in 4 countries.
24 sites in 4 countries
United States15 sites
Study site
Atlanta, Georgia, 30322
Study site
Bethesda, Maryland, 20814
Study site
Bethesda, Maryland, 20892
Study site
Boston, Massachusetts, 02114
Study site
Charleston, South Carolina, 29425
Study site
Charlottesville, Virginia, 22908
Study site
Chicago, Illinois, 60611-2908
Study site
Cleveland, Ohio, 44195
Study site
Columbus, Ohio, 43210
Study site
Durham, North Carolina, 27710
Study site
Houston, Texas, 77030
Study site
Los Angeles, California, 90048-0750
Study site
Philadelphia, Pennsylvania, 19104
Study site
St Louis, Missouri, 63110
Study site
Tucson, Arizona, 85724
Australia4 sites
Study site
Adelaide, South Australia, 5042
Study site
Chermside, 4032
Study site
North Adelaide, 5006
Study site
Perth, Western Australia, 6000
Canada3 sites
Study site
London, Ontario, N6A 5A5
Study site
Montreal, Quebec, H1T 1C8
Study site
Montreal, Quebec, H4A 3J1
About this study
Official title: Multicenter Open-label Study to Evaluate Efficacy of Gadobutrol-enhanced Cardiac Magnetic Resonance Imaging (CMRI) for Detection of Significant Coronary Artery Disease (CAD) in Subjects With Known or Suspected CAD by a Blinded Image Analysis
Subjects being evaluated for suspected or known Coronary artery Disease (CAD) based on signs and/or symptoms, will be invited to participate in the study. The duration for a subject in the study may range from 2 days to 4-6 weeks. One to four visits to the study doctor will be required.
The primary objective of this study is to demonstrate that sensitivity and specificity of gadobutrol-enhanced cardiac magnetic resonance imaging (CMRI) exceed pre-specified minimum performance thresholds of 60% and 55%, respectively, and to show superior sensitivity over unenhanced wall motion CMRI at vasodilator rest/stress for the detection of significant CAD. The CMR images acquired with a uniform imaging acquisition software will be evaluated either against the results from routine clinical Coronary Angiography (CA) or Computed Tomography Angiography (CTA), which are the standard of reference.
CMRI and CA/CTA images will be collected for an independent image review (blinded read).
- Conditions
- Coronary Artery Disease
- Being tested
- Gadobutrol (Gadavist, Gadovist, BAY86-4875)
- Keywords
- Myocardial Perfusion Imaging
- Medical subject headings
- Coronary Artery Disease
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Gadobutrol (Gadavist, Gadovist, BAY86-4875)Drug
Participants received gadobutrol at the total approved standard dose of 0.1 millimole per kilogram body weight (mmol/kg BW) in 2 separate bolus injections: 0.05 mmol/kg BW at peak pharmacologic stress and 0.05 mmol/kg BW at rest via a power injector.
| Study group | Role | What they receive |
|---|---|---|
| Gadobutrol 0.1 mmol/kg body weight | Experimental | Participants received gadobutrol at the total approved standard dose of 0.1 millimole per kilogram body weight (mmol/kg BW) in 2 separate bolus injections: 0.05 mmol/kg BW at peak pharmacologic stress and 0.05 mmol/kg BW at rest via a power injector. Receives: Drug: Gadobutrol (Gadavist, Gadovist, BAY86-4875) |
What is being measured
The primary outcome is the main question the study is designed to answer.
Presence of a Myocardial Perfusion Defect Indicating Significant CAD Per Participant on Gadobutrol-enhanced CMRI - Primary Analysis of Sensitivity Based on Blinded Readers' Assessment
Blinded readers evaluated 6 myocardial regions based on regional perfusion score [RPS: 0=normal; 1=abnormal, reversible perfusion defect (stress); 2=abnormal, mixed perfusion defect (reversible and fixed/permanent components); 3=abnormal, fixed/permanent perfusion defect/scar (stress and rest)]. A myocardial region was rated to have a perfusion defect in case of a RPS of >=1 and was rated to have normal perfusion in case of a RPS of 0. Significant CAD was defined as quantitative coronary angiography (QCA) stenosis of >=50% for primary analysis, and was determined based on the presence of a myocardial perfusion defect on gadobutrol-enhanced cardiac magnetic resonance imaging (CMRI) verified by standard of reference (SoR, coronary angiography [CA] or computed tomography angiography [CTA, only if disease can be unequivocally rejected]). Sensitivity= true positive/ (true positive + false negative).
Measured: 0 to 30/40 min post-injection
Presence of a Myocardial Perfusion Defect Indicating Significant CAD Per Participant on Gadobutrol-enhanced CMRI - Additional Secondary Analysis of Sensitivity Based on Blinded Readers' Assessment
Blinded readers evaluated 6 myocardial regions based on regional perfusion score [RPS: 0=normal; 1=abnormal, reversible perfusion defect (stress); 2=abnormal, mixed perfusion defect (reversible and fixed/permanent components); 3=abnormal, fixed/permanent perfusion defect/scar (stress and rest)]. A myocardial region was rated to have a perfusion defect in case of a RPS of >=1 and was rated to have normal perfusion in case of a RPS of 0. Significant CAD was defined as QCA stenosis of >=70%, and was determined based on the presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI verified by SoR (CA or CTA [only if disease can be unequivocally rejected]). Sensitivity= true positive/ (true positive + false negative). This additional secondary analysis of sensitivity was retrospective analysis.
Measured: 0 to 30/40 min post-injection
Absence of Myocardial Perfusion Defect Excluding Significant CAD Per Participant on Gadobutrol-enhanced CMRI - Primary Analysis of Specificity Based on Blinded Readers' Assessment
Blinded readers evaluated 6 myocardial regions based on regional perfusion score [RPS: 0=normal; 1=abnormal, reversible perfusion defect (stress); 2=abnormal, mixed perfusion defect (reversible and fixed/permanent components); 3=abnormal, fixed/permanent perfusion defect/scar (stress and rest)]. A myocardial region was rated to have a perfusion defect in case of a RPS of >=1 and was rated to have normal perfusion in case of a RPS of 0. Significant CAD was defined as QCA stenosis of >=50% for primary analysis, and was determined based on the presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI verified by SoR (CA or CTA [only if disease can be unequivocally rejected]). Specificity= true negative/ (true negative + false positive).
Measured: 0 to 30/40 min post-injection
Absence of a Myocardial Perfusion Defect Excluding Significant CAD Per Participant on Gadobutrol-enhanced CMRI - Additional Secondary Analysis of Specificity Based on Blinded Readers' Assessment
Blinded readers evaluated 6 myocardial regions based on regional perfusion score [RPS: 0=normal; 1=abnormal, reversible perfusion defect (stress); 2=abnormal, mixed perfusion defect (reversible and fixed/permanent components); 3=abnormal, fixed/permanent perfusion defect/scar (stress and rest)]. A myocardial region was rated to have a perfusion defect in case of a RPS of >=1 and was rated to have normal perfusion in case of a RPS of 0. Significant CAD was defined as QCA stenosis of >=70%, and was determined based on the presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI verified by SoR (CA or CTA [only if disease can be unequivocally rejected]). Specificity= true negative/ (true negative + false positive). This additional secondary analysis of specificity was retrospective analysis.
Measured: 0 to 30/40 min post-injection
Presence of a Myocardial Perfusion Defect Indicating Significant CAD Per Participant on Gadobutrol-enhanced CMRI Versus Unenhanced Wall Motion CMRI Images - Primary Analysis of Sensitivity Comparison Based on the Blinded Readers' Assessment
Presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI versus the presence of wall motion abnormalities on unenhanced CMRI images (based on regional perfusion/regional wall motion score of the 6 myocardial regions) was calculated by blinded readers' assessment. Significant CAD was defined as QCA stenosis of >=50% for primary analysis, and was determined based on the presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI or the presence of wall motion abnormalities on unenhanced CMRI images verified by SoR (CA or CTA [only if disease can be unequivocally rejected]). Sensitivity= true positive/ (true positive + false negative).
Measured: 0 to 30/40 min post-injection
Presence of a Myocardial Perfusion Defect Indicating Significant CAD Per Participant on Gadobutrol-enhanced CMRI Versus Unenhanced Wall Motion CMRI Images - Additional Secondary Analysis of Sensitivity Comparison Based on the Blinded Readers' Assessment
Presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI versus the presence of wall motion abnormalities on unenhanced CMRI images (based on regional perfusion/regional wall motion score of the 6 myocardial regions) was calculated by blinded readers' assessment. Significant CAD was defined as QCA stenosis of >=70%, and was determined based on the presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI or the presence of wall motion abnormalities on unenhanced CMRI images verified by SoR (CA or CTA [only if disease can be unequivocally rejected]). Sensitivity= true positive/ (true positive + false negative). This additional secondary analysis of sensitivity was retrospective analysis.
Measured: 0 to 30/40 min post-injection
Secondary outcomes (21)
Presence of a Myocardial Perfusion Defect Indicating Significant CAD Per Participant on Gadobutrol-enhanced CMRI - Secondary Analysis of Sensitivity Based on Investigator's Assessment
The investigator evaluated 6 myocardial regions based on regional perfusion score [RPS: 0=normal; 1=abnormal, reversible perfusion defect (stress); 2=abnormal, mixed perfusion defect (reversible and fixed/permanent components); 3=abnormal, fixed/permanent perfusion defect/scar (stress and rest)]. A myocardial region was rated to have a perfusion defect in case of a RPS of >=1 and was rated to have normal perfusion in case of a RPS of 0. Significant CAD was defined as QCA stenosis of >=50%, and was determined based on the presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI verified by SoR (CA or CTA [only if disease can be unequivocally rejected]). Sensitivity= true positive/ (true positive + false negative).
Measured: 0 to 30/40 min post-injection
Presence of a Myocardial Perfusion Defect Indicating Significant CAD Per Participant on Gadobutrol-enhanced CMRI - Additional Secondary Analysis of Sensitivity Based on Investigator's Assessment
The investigator evaluated 6 myocardial regions based on regional perfusion score [RPS: 0=normal; 1=abnormal, reversible perfusion defect (stress); 2=abnormal, mixed perfusion defect (reversible and fixed/permanent components); 3=abnormal, fixed/permanent perfusion defect/scar (stress and rest)]. A myocardial region was rated to have a perfusion defect in case of a RPS of >=1 and was rated to have normal perfusion in case of a RPS of 0. Significant CAD was defined as QCA stenosis of >=70%, and was determined based on the presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI verified by SoR (CA or CTA [only if disease can be unequivocally rejected]). Sensitivity= true positive/ (true positive + false negative). This additional secondary analysis of sensitivity was retrospective analysis.
Measured: 0 to 30/40 min post-injection
Absence of a Myocardial Perfusion Defect Excluding Significant CAD Per Participant on Gadobutrol-enhanced CMRI - Secondary Analysis of Specificity Based on Investigator's Assessment
The investigator evaluated 6 myocardial regions based on regional perfusion score [RPS: 0=normal; 1=abnormal, reversible perfusion defect (stress); 2=abnormal, mixed perfusion defect (reversible and fixed/permanent components); 3=abnormal, fixed/permanent perfusion defect/scar (stress and rest)]. A myocardial region was rated to have a perfusion defect in case of a RPS of >=1 and was rated to have normal perfusion in case of a RPS of 0. Significant CAD was defined as QCA stenosis of >=50%, and was determined based on the presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI verified by SoR (CA or CTA [only if disease can be unequivocally rejected]). Specificity= true negative/ (true negative + false positive).
Measured: 0 to 30/40 min post-injection
Absence of a Myocardial Perfusion Defect Excluding Significant CAD Per Participant on Gadobutrol-enhanced CMRI - Additional Secondary Analysis of Specificity Based on Investigator's Assessment
The investigator evaluated 6 myocardial regions based on regional perfusion score [RPS: 0=normal; 1=abnormal, reversible perfusion defect (stress); 2=abnormal, mixed perfusion defect (reversible and fixed/permanent components); 3=abnormal, fixed/permanent perfusion defect/scar (stress and rest)]. A myocardial region was rated to have a perfusion defect in case of a RPS of >=1 and was rated to have normal perfusion in case of a RPS of 0. Significant CAD was defined as QCA stenosis of >=70%, and was determined based on the presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI verified by SoR (CA or CTA [only if disease can be unequivocally rejected]). Specificity= true negative/ (true negative + false positive). This additional secondary analysis of specificity was retrospective analysis.
Measured: 0 to 30/40 min post-injection
Presence of a Myocardial Perfusion Defect Indicating Significant CAD Per Participant on Gadobutrol-enhanced CMRI Versus Unenhanced Wall Motion CMRI Images - Secondary Analysis of Sensitivity Comparison Based on the Investigator's Assessment
Presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI versus the presence of wall motion abnormalities on unenhanced CMRI images (based on regional perfusion/regional wall motion score of the 6 myocardial regions) was calculated by investigator's assessment. Significant CAD was defined as QCA stenosis of >=50%, and was determined based on the presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI or the presence of wall motion abnormalities on unenhanced CMRI images verified by SoR (CA or CTA [only if disease can be unequivocally rejected]). Sensitivity= true positive/ (true positive + false negative).
Measured: 0 to 30/40 min post-injection
Presence of a Myocardial Perfusion Defect Indicating Significant CAD Per Participant on Gadobutrol-enhanced CMRI and Unenhanced Wall Motion CMRI Images - Additional Secondary Analysis of Sensitivity Comparison Based on the Investigator's Assessment
Presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI versus the presence of wall motion abnormalities on unenhanced CMRI images (based on regional perfusion/regional wall motion score of the 6 myocardial regions) was calculated by investigator's assessment. Significant CAD was defined as QCA stenosis of >=70%, and was determined based on the presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI or the presence of wall motion abnormalities on unenhanced CMRI images verified by SoR (CA or CTA [only if disease can be unequivocally rejected]). Sensitivity= true positive/ (true positive + false negative). This additional secondary analysis of sensitivity was retrospective analysis.
Measured: 0 to 30/40 min post-injection
Presence of a Myocardial Perfusion Defect Indicating Significant CAD Per Participant on Gadobutrol-enhanced CMRI Versus GSPECT - Secondary Analysis of Sensitivity Comparison Based on Majority Blinded Reader's and Investigator's Assessment
Presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI versus GSPECT (based on RPS of the 6 myocardial regions) was calculated by majority blinded reader (BR) and investigator's assessment. Significant CAD was defined as QCA stenosis of >=50%, and was determined based on the presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI or GSPECT verified by SoR (CA or CTA [only if disease can be unequivocally rejected]). Sensitivity= true positive/ (true positive + false negative). Blinded reading of the gadobutrol-enhanced CMRI images and GSPECT images was performed by different readers.
Measured: 0 to 30/40 min post-injection
Presence of a Myocardial Perfusion Defect Indicating Significant CAD Per Participant on Gadobutrol-enhanced CMRI and GSPECT - Additional Secondary Analysis of Sensitivity Based on Majority Blinded Reader's and Investigator's Assessment
Presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI versus GSPECT (based on RPS of the 6 myocardial regions) was calculated by majority blinded reader and investigator's assessment. Significant CAD was defined as QCA stenosis of >=70%, and was determined based on the presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI or GSPECT verified by SoR (CA or CTA [only if disease can be unequivocally rejected]). Sensitivity= true positive/ (true positive + false negative). This additional secondary analysis of sensitivity was retrospective analysis. Blinded reading of the gadobutrol-enhanced CMRI images and GSPECT images was performed by different readers.
Measured: 0 to 30/40 min post-injection
Absence of a Myocardial Perfusion Defect Excluding Significant CAD Per Participant on Gadobutrol-enhanced CMRI Versus GSPECT -- Secondary Analysis of Specificity Comparison Based on Majority Blinded Reader's and Investigator's Assessment
Absence of a myocardial perfusion defect on gadobutrol-enhanced CMRI versus GSPECT (based on RPS of the 6 myocardial regions) was calculated by majority blinded reader and investigator's assessment. Significant CAD was defined as QCA stenosis of >=50%, and was determined based on the presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI or GSPECT verified by SoR (CA or CTA [only if disease can be unequivocally rejected]). Specificity= true negative/(true negative + false positive). Blinded reading of the gadobutrol-enhanced CMRI images and GSPECT images was performed by different readers.
Measured: 0 to 30/40 min post-injection
Absence of a Myocardial Perfusion Defect Excluding Significant CAD Per Participant on Gadobutrol-enhanced CMRI and GSPECT - Additional Secondary Analysis of Specificity Based on Majority Blinded Reader's and Investigator's Assessment
Absence of a myocardial perfusion defect on gadobutrol-enhanced CMRI versus GSPECT (based on RPS of the 6 myocardial regions) was calculated by majority blinded reader and investigator's assessment. Significant CAD was defined as QCA stenosis of >=70%, and was determined based on the presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI or GSPECT verified by SoR (CA or CTA [only if disease can be unequivocally rejected]). Specificity= true negative/(true negative + false positive). This additional secondary analysis of specificity was retrospective analysis. Blinded reading of the gadobutrol-enhanced CMRI images and GSPECT images was performed by different readers.
Measured: 0 to 30/40 min post-injection
Localization of a Myocardial Perfusion Defect to Each Coronary Territory on Gadobutrol-enhanced CMRI - Secondary Analysis of Sensitivity Based on Blinded Readers' and Investigator's Assessment
Sensitivity was calculated coronary territory based, a coronary territory (left anterior descending artery [LAD] / non-LAD / right coronary artery [RCA] / left circumflex artery [LCX]) was rated positive for significant CAD (significant CAD defined as QCA stenosis of>=50%), if >=1 myocardial region within the same coronary territory showed a myocardial perfusion defect with a RPS of >=1. A coronary territory (LAD / non-LAD) was rated negative for significant CAD, if no myocardial region within the respective coronary territory showed a myocardial perfusion defect (RPS 0). Sensitivity was displayed for all 3 blinded readers, majority blinded reader and the investigator.
Measured: 0 to 30/40 min post-injection
Localization of a Myocardial Perfusion Defect to LAD and Non-LAD Territory on GSPECT - Secondary Analysis of Sensitivity Based on Blinded Readers' and Investigator's Assessment
Sensitivity was calculated coronary territory based, a coronary territory (LAD / non-LAD) was rated positive for significant CAD (significant CAD defined as QCA stenosis of >=50%), if >=1 myocardial region within the same coronary territory showed a myocardial perfusion defect with a RPS of >=1. A coronary territory (LAD / non-LAD) was rated negative for significant CAD, if no myocardial region within the respective coronary territory showed a myocardial perfusion defect (RPS 0). Sensitivity was displayed for all 3 blinded readers, majority blinded reader and the investigator. Blinded reading of the gadobutrol-enhanced CMRI images and GSPECT images was performed by different readers.
Measured: 0 to 30/40 min post-injection
Localization of a Myocardial Perfusion Defect to Each Coronary Territory on Gadobutrol-enhanced CMRI - Additional Secondary Analysis of Sensitivity Based on Blinded Readers' and Investigator's Assessment
Sensitivity was calculated coronary territory based, a coronary territory (LAD / non-LAD / RCA / LCX) was rated positive for significant CAD (significant CAD defined as QCA stenosis of >=70%), if >=1 myocardial region within the same coronary territory showed a myocardial perfusion defect with a RPS of >=1. A coronary territory (LAD / non-LAD) was rated negative for significant CAD, if no myocardial region within the respective coronary territory showed a myocardial perfusion defect (RPS 0). Sensitivity was displayed for all 3 blinded readers and the investigator. This additional secondary analysis of sensitivity was retrospective analysis.
Measured: 0 to 30/40 min post-injection
Localization of a Myocardial Perfusion Defect to Each Coronary Territory on Gadobutrol-enhanced CMRI - Secondary Analysis of Specificity Based on Blinded Readers' and Investigator's Assessment
Specificity was calculated coronary territory based, a coronary territory (LAD / non-LAD / RCA / LCX) was rated positive for significant CAD (significant CAD defined as QCA stenosis of >=50%), if >=1 myocardial region within the same coronary territory showed a myocardial perfusion defect with a RPS of >=1. A coronary territory (LAD / non-LAD) was rated negative for significant CAD, if no myocardial region within the respective coronary territory showed a myocardial perfusion defect (RPS 0). Specificity was displayed for all 3 blinded readers and the investigator.
Measured: 0 to 30/40 min post-injection
Localization of a Myocardial Perfusion Defect to LAD and Non-LAD Territory on GSPECT - Secondary Analysis of Specificity Based on Blinded Readers' and Investigator's Assessment
Specificity was calculated coronary territory based, a coronary territory (LAD / non-LAD) was rated positive for significant CAD (significant CAD defined as QCA stenosis of >=50%), if >=1 myocardial region within the same coronary territory showed a myocardial perfusion defect with a RPS of >=1. A coronary territory (LAD / non-LAD) was rated negative for significant CAD, if no myocardial region within the respective coronary territory showed a myocardial perfusion defect (RPS 0). Specificity was displayed for all 3 blinded readers, majority blinded reader and the investigator. Blinded reading of the gadobutrol-enhanced CMRI images and GSPECT images was performed by different readers.
Measured: 0 to 30/40 min post-injection
Localization of a Myocardial Perfusion Defect to Each Coronary Territory on Gadobutrol-enhanced CMRI - Additional Secondary Analysis of Specificity Based on Blinded Readers' and Investigator's Assessment
Specificity was calculated coronary territory based, a coronary territory (LAD / non-LAD / RCA / LCX) was rated positive for significant CAD (significant CAD defined as QCA stenosis of >=70%), if >=1 myocardial region within the same coronary territory showed a myocardial perfusion defect with a RPS of >=1. A coronary territory (LAD / non-LAD) was rated negative for significant CAD, if no myocardial region within the respective coronary territory showed a myocardial perfusion defect (RPS 0). Specificity was displayed for all 3 blinded readers and the investigator. This additional secondary analysis of specificity was retrospective analysis.
Measured: 0 to 30/40 min post-injection
Detection of Myocardial Perfusion Defect(s) on Gadobutrol-enhanced CMRI in Participants With Significant LMS Stenosis - Based on Blinded Readers' and Investigator's Assessment
Number of participants with myocardial perfusion defects on gadobutrol-enhanced CMRI was calculated in participants with significant left main stem (LMS) stenosis and the myocardial perfusion defect pattern was described. If >=1 myocardial region showed a myocardial perfusion defect with a RPS of >=1, participants will be rated positive for significant CAD (significant CAD defined as QCA stenosis of >=50%).
Measured: 0 to 30/40 min post-injection
Presence of a Myocardial Perfusion Defect Indicating Significant CAD in Participants With Single or Multi-vessel Disease Evaluated on Gadobutrol-enhanced CMRI - Secondary Analysis of Sensitivity Based on Blinded Readers' and Investigator's Assessment
Sensitivity was calculated for detection of myocardial perfusion defects on gadobutrol-enhanced CMRI in participants with single and multi-vessel diseases. If >=1 myocardial region showed a myocardial perfusion defect with a RPS of >=1, participants will be rated positive for significant CAD (significant CAD defined as QCA stenosis of >=50%). Sensitivity= true positive/ (true positive + false negative).
Measured: 0 to 30/40 min post-injection
Presence of a Myocardial Perfusion Defect Indicating Significant CAD in Participants With Single-vessel Disease Evaluated on Gadobutrol-enhanced CMRI and GSPECT - Additional Secondary Analysis of Sensitivity by Majority Blinded Reader and Investigator
Sensitivity was calculated for detection of myocardial perfusion defects on gadobutrol-enhanced CMRI and GSPECT in participants with single-vessel diseases. If >=1 myocardial region showed a myocardial perfusion defect with a RPS of >=1, participants will be rated positive for significant CAD (significant CAD defined as QCA stenosis of >=70%). Sensitivity= true positive/ (true positive + false negative). This additional secondary analysis of sensitivity was retrospective analysis. Blinded reading of the gadobutrol-enhanced CMRI images and GSPECT images was performed by different readers.
Measured: 0 to 30/40 min post-injection
Presence of a Myocardial Perfusion Defect Indicating Significant CAD in Participants With Multi-vessel Disease Evaluated on Gadobutrol-enhanced CMRI and GSPECT - Additional Secondary Analysis of Sensitivity by Majority Blinded Reader and Investigator
Sensitivity was calculated for detection of myocardial perfusion defects on gadobutrol-enhanced CMRI and GSPECT in participants with single-vessel diseases. If >=1 myocardial region showed a myocardial perfusion defect with a RPS of >=1, participants will be rated positive for significant CAD (significant CAD defined as QCA stenosis of >=70%). Sensitivity= true positive/ (true positive + false negative). This additional secondary analysis of sensitivity was retrospective analysis. Blinded reading of the gadobutrol-enhanced CMRI images and GSPECT images was performed by different readers.
Measured: 0 to 30/40 min post-injection
Number of Participants by Their Lowest Confidence in Diagnosis Obtained on Gadobutrol-enhanced CMRI and Unenhanced Wall Motion CMRI - Based on Blinded Readers' and Investigator's Assessment
Score for confidence in diagnosis (not confident, somewhat confident, and confident) was described descriptively for each of the 6 myocardial regions. The frequency over the worst confidence in diagnosis obtained within a participant was displayed. All these analyses were done separately for gadobutrol-enhanced CMRI and unenhanced wall motion CMRI.
Measured: 0 to 30/40 min post-injection
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted1 Jul 2013 (estimated)
- Study start26 Aug 2013
- Primary completion6 Aug 2016
- Study completion10 Nov 2016
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for Coronary Artery DiseaseStudies of the same condition, open and under way.
- More trials run by BayerThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 3
- Primary purpose
- Diagnosis
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 478 participants (actual)
Sponsor and investigators
- Lead sponsor
- Bayer
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Bayer Study Director, Study director, Bayer
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01890434
- Sponsor's protocol ID
- 15962
- Other IDs
- 2013-000066-11
- Acronym
- GadaCAD 2
- Status last verified
- Jul 2019
- First submitted
- 27 Jun 2013
- Last updated
- 31 Jul 2019
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 31 Jul 2019. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Multicenter Open-label Study to Evaluate Efficacy of Gadobutrol-enhanced Cardiac Magnetic Resonance Imaging (CMRI) for Detection of Significant Coronary Artery Disease (CAD) in Subjects With Known or Suspected CAD by a Blinded Image Analysis
- ClinicalTrials.gov ID
- NCT01890434
- Acronym / sponsor ID
- GadaCAD 2 / 15962
- Conditions
- Coronary Artery Disease
- Keywords
- Myocardial Perfusion Imaging
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 478 participants (actual)
- Lead sponsor
- BayerIndustry (pharma, biotech, devices)
- Study start
- 26 Aug 2013 (actual)
- Primary completion
- 6 Aug 2016 (actual)
- Study completion
- 10 Nov 2016 (actual)
- First posted
- 1 Jul 2013 (estimated)
- Results
- Posted 16 May 2018
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Subjects being evaluated for suspected or known Coronary artery Disease (CAD) based on signs and/or symptoms, will be invited to participate in the study. The duration for a subject in the study may range from 2 days to 4-6 weeks. One to four visits to the study doctor will be required.
The primary objective of this study is to demonstrate that sensitivity and specificity of gadobutrol-enhanced cardiac magnetic resonance imaging (CMRI) exceed pre-specified minimum performance thresholds of 60% and 55%, respectively, and to show superior sensitivity over unenhanced wall motion CMRI at vasodilator rest/stress for the detection of significant CAD. The CMR images acquired with a uniform imaging acquisition software will be evaluated either against the results from routine clinical Coronary Angiography (CA) or Computed Tomography Angiography (CTA), which are the standard of reference.
CMRI and CA/CTA images will be collected for an independent image review (blinded read).
Study design
- Primary purpose
- Diagnosis
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Gadobutrol 0.1 mmol/kg body weight | Experimental | Drug: Gadobutrol (Gadavist, Gadovist, BAY86-4875)Participants received gadobutrol at the total approved standard dose of 0.1 millimole per kilogram body weight (mmol/kg BW) in 2 separate bolus injections: 0.05 mmol/kg BW at peak pharmacologic stress and 0.05 mmol/kg BW at rest via a power injector. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (5 listed)
- Male or female subjects aged ≥18 years
- Subjects with suspected or known CAD based on signs and/or (typical or atypical) chest pain who have routine CA without intervention within plus/minus 4 weeks of gadobutrol-enhanced CMRI or subjects at low risk of CAD with / or scheduled to get a CTA for the purpose of exclusion of CAD within plus/minus 6 weeks of gadobutrol-enhanced CMRI
- Willingness to undergo unenhanced wall motion and gadobutrol-enhanced CMRI at stress/rest and gated single photon emission computed tomography (GSPECT, if GSPECT will be a study procedure)
- Women of childbearing potential (e.g. age < 60y, no history of surgical sterilization or hysterectomy): use of contraception and a negative pregnancy test
- Subjects who are scheduled for / have undergone routine GSPECT or undergo GSPECT as a study procedure at stress and at rest within ± 4 weeks of gadobutrol-enhanced CMRI
Key exclusion criteria (9 listed)
- Suspected clinical instability or unpredictability of the clinical course during the study period
- Contraindication to the cardiac MRI examination (e.g. inability to hold breath; severe claustrophobia, metallic devices such as pace makers)
- History of severe allergic or anaphylactoid reaction to any allergen including drugs and contrast agents according to the investigator's assessment / judgment
- Estimated glomerular filtration rate (eGFR) value <30 mL/min/1.73 m^2 derived from a serum / blood creatinine result within 2 weeks prior to gadobutrol injection. Any subject on hemodialysis or peritoneal dialysis is excluded from enrollment.
- Acute renal insufficiency
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Gadobutrol (Gadavist, Gadovist, BAY86-4875)Participants received gadobutrol at the total approved standard dose of 0.1 millimole per kilogram body weight (mmol/kg BW) in 2 separate bolus injections: 0.05 mmol/kg BW at peak pharmacologic stress and 0.05 mmol/kg BW at rest via a power injector. | Drug | Gadobutrol 0.1 mmol/kg body weight |
Primary outcome
Presence of a Myocardial Perfusion Defect Indicating Significant CAD Per Participant on Gadobutrol-enhanced CMRI - Primary Analysis of Sensitivity Based on Blinded Readers' Assessment
Time frame: 0 to 30/40 min post-injection
Blinded readers evaluated 6 myocardial regions based on regional perfusion score [RPS: 0=normal; 1=abnormal, reversible perfusion defect (stress); 2=abnormal, mixed perfusion defect (reversible and fixed/permanent components); 3=abnormal, fixed/permanent perfusion defect/scar (stress and rest)]. A myocardial region was rated to have a perfusion defect in case of a RPS of >=1 and was rated to have normal perfusion in case of a RPS of 0. Significant CAD was defined as quantitative coronary angiography (QCA) stenosis of >=50% for primary analysis, and was determined based on the presence of a myocardial perfusion defect on gadobutrol-enhanced cardiac magnetic resonance imaging (CMRI) verified by standard of reference (SoR, coronary angiography [CA] or computed tomography angiography [CTA, only if disease can be unequivocally rejected]). Sensitivity= true positive/ (true positive + false negative).
Presence of a Myocardial Perfusion Defect Indicating Significant CAD Per Participant on Gadobutrol-enhanced CMRI - Additional Secondary Analysis of Sensitivity Based on Blinded Readers' Assessment
Time frame: 0 to 30/40 min post-injection
Blinded readers evaluated 6 myocardial regions based on regional perfusion score [RPS: 0=normal; 1=abnormal, reversible perfusion defect (stress); 2=abnormal, mixed perfusion defect (reversible and fixed/permanent components); 3=abnormal, fixed/permanent perfusion defect/scar (stress and rest)]. A myocardial region was rated to have a perfusion defect in case of a RPS of >=1 and was rated to have normal perfusion in case of a RPS of 0. Significant CAD was defined as QCA stenosis of >=70%, and was determined based on the presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI verified by SoR (CA or CTA [only if disease can be unequivocally rejected]). Sensitivity= true positive/ (true positive + false negative). This additional secondary analysis of sensitivity was retrospective analysis.
Absence of Myocardial Perfusion Defect Excluding Significant CAD Per Participant on Gadobutrol-enhanced CMRI - Primary Analysis of Specificity Based on Blinded Readers' Assessment
Time frame: 0 to 30/40 min post-injection
Blinded readers evaluated 6 myocardial regions based on regional perfusion score [RPS: 0=normal; 1=abnormal, reversible perfusion defect (stress); 2=abnormal, mixed perfusion defect (reversible and fixed/permanent components); 3=abnormal, fixed/permanent perfusion defect/scar (stress and rest)]. A myocardial region was rated to have a perfusion defect in case of a RPS of >=1 and was rated to have normal perfusion in case of a RPS of 0. Significant CAD was defined as QCA stenosis of >=50% for primary analysis, and was determined based on the presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI verified by SoR (CA or CTA [only if disease can be unequivocally rejected]). Specificity= true negative/ (true negative + false positive).
Absence of a Myocardial Perfusion Defect Excluding Significant CAD Per Participant on Gadobutrol-enhanced CMRI - Additional Secondary Analysis of Specificity Based on Blinded Readers' Assessment
Time frame: 0 to 30/40 min post-injection
Blinded readers evaluated 6 myocardial regions based on regional perfusion score [RPS: 0=normal; 1=abnormal, reversible perfusion defect (stress); 2=abnormal, mixed perfusion defect (reversible and fixed/permanent components); 3=abnormal, fixed/permanent perfusion defect/scar (stress and rest)]. A myocardial region was rated to have a perfusion defect in case of a RPS of >=1 and was rated to have normal perfusion in case of a RPS of 0. Significant CAD was defined as QCA stenosis of >=70%, and was determined based on the presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI verified by SoR (CA or CTA [only if disease can be unequivocally rejected]). Specificity= true negative/ (true negative + false positive). This additional secondary analysis of specificity was retrospective analysis.
Presence of a Myocardial Perfusion Defect Indicating Significant CAD Per Participant on Gadobutrol-enhanced CMRI Versus Unenhanced Wall Motion CMRI Images - Primary Analysis of Sensitivity Comparison Based on the Blinded Readers' Assessment
Time frame: 0 to 30/40 min post-injection
Presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI versus the presence of wall motion abnormalities on unenhanced CMRI images (based on regional perfusion/regional wall motion score of the 6 myocardial regions) was calculated by blinded readers' assessment. Significant CAD was defined as QCA stenosis of >=50% for primary analysis, and was determined based on the presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI or the presence of wall motion abnormalities on unenhanced CMRI images verified by SoR (CA or CTA [only if disease can be unequivocally rejected]). Sensitivity= true positive/ (true positive + false negative).
Presence of a Myocardial Perfusion Defect Indicating Significant CAD Per Participant on Gadobutrol-enhanced CMRI Versus Unenhanced Wall Motion CMRI Images - Additional Secondary Analysis of Sensitivity Comparison Based on the Blinded Readers' Assessment
Time frame: 0 to 30/40 min post-injection
Presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI versus the presence of wall motion abnormalities on unenhanced CMRI images (based on regional perfusion/regional wall motion score of the 6 myocardial regions) was calculated by blinded readers' assessment. Significant CAD was defined as QCA stenosis of >=70%, and was determined based on the presence of a myocardial perfusion defect on gadobutrol-enhanced CMRI or the presence of wall motion abnormalities on unenhanced CMRI images verified by SoR (CA or CTA [only if disease can be unequivocally rejected]). Sensitivity= true positive/ (true positive + false negative). This additional secondary analysis of sensitivity was retrospective analysis.
21 secondary outcomes
Presence of a Myocardial Perfusion Defect Indicating Significant CAD Per Participant on Gadobutrol-enhanced CMRI - Secondary Analysis of Sensitivity Based on Investigator's Assessment
Time frame: 0 to 30/40 min post-injection
Presence of a Myocardial Perfusion Defect Indicating Significant CAD Per Participant on Gadobutrol-enhanced CMRI - Additional Secondary Analysis of Sensitivity Based on Investigator's Assessment
Time frame: 0 to 30/40 min post-injection
Absence of a Myocardial Perfusion Defect Excluding Significant CAD Per Participant on Gadobutrol-enhanced CMRI - Secondary Analysis of Specificity Based on Investigator's Assessment
Time frame: 0 to 30/40 min post-injection
Absence of a Myocardial Perfusion Defect Excluding Significant CAD Per Participant on Gadobutrol-enhanced CMRI - Additional Secondary Analysis of Specificity Based on Investigator's Assessment
Time frame: 0 to 30/40 min post-injection
Presence of a Myocardial Perfusion Defect Indicating Significant CAD Per Participant on Gadobutrol-enhanced CMRI Versus Unenhanced Wall Motion CMRI Images - Secondary Analysis of Sensitivity Comparison Based on the Investigator's Assessment
Time frame: 0 to 30/40 min post-injection
Presence of a Myocardial Perfusion Defect Indicating Significant CAD Per Participant on Gadobutrol-enhanced CMRI and Unenhanced Wall Motion CMRI Images - Additional Secondary Analysis of Sensitivity Comparison Based on the Investigator's Assessment
Time frame: 0 to 30/40 min post-injection
Presence of a Myocardial Perfusion Defect Indicating Significant CAD Per Participant on Gadobutrol-enhanced CMRI Versus GSPECT - Secondary Analysis of Sensitivity Comparison Based on Majority Blinded Reader's and Investigator's Assessment
Time frame: 0 to 30/40 min post-injection
Presence of a Myocardial Perfusion Defect Indicating Significant CAD Per Participant on Gadobutrol-enhanced CMRI and GSPECT - Additional Secondary Analysis of Sensitivity Based on Majority Blinded Reader's and Investigator's Assessment
Time frame: 0 to 30/40 min post-injection
Absence of a Myocardial Perfusion Defect Excluding Significant CAD Per Participant on Gadobutrol-enhanced CMRI Versus GSPECT -- Secondary Analysis of Specificity Comparison Based on Majority Blinded Reader's and Investigator's Assessment
Time frame: 0 to 30/40 min post-injection
Absence of a Myocardial Perfusion Defect Excluding Significant CAD Per Participant on Gadobutrol-enhanced CMRI and GSPECT - Additional Secondary Analysis of Specificity Based on Majority Blinded Reader's and Investigator's Assessment
Time frame: 0 to 30/40 min post-injection
Localization of a Myocardial Perfusion Defect to Each Coronary Territory on Gadobutrol-enhanced CMRI - Secondary Analysis of Sensitivity Based on Blinded Readers' and Investigator's Assessment
Time frame: 0 to 30/40 min post-injection
Localization of a Myocardial Perfusion Defect to LAD and Non-LAD Territory on GSPECT - Secondary Analysis of Sensitivity Based on Blinded Readers' and Investigator's Assessment
Time frame: 0 to 30/40 min post-injection
Localization of a Myocardial Perfusion Defect to Each Coronary Territory on Gadobutrol-enhanced CMRI - Additional Secondary Analysis of Sensitivity Based on Blinded Readers' and Investigator's Assessment
Time frame: 0 to 30/40 min post-injection
Localization of a Myocardial Perfusion Defect to Each Coronary Territory on Gadobutrol-enhanced CMRI - Secondary Analysis of Specificity Based on Blinded Readers' and Investigator's Assessment
Time frame: 0 to 30/40 min post-injection
Localization of a Myocardial Perfusion Defect to LAD and Non-LAD Territory on GSPECT - Secondary Analysis of Specificity Based on Blinded Readers' and Investigator's Assessment
Time frame: 0 to 30/40 min post-injection
Localization of a Myocardial Perfusion Defect to Each Coronary Territory on Gadobutrol-enhanced CMRI - Additional Secondary Analysis of Specificity Based on Blinded Readers' and Investigator's Assessment
Time frame: 0 to 30/40 min post-injection
Detection of Myocardial Perfusion Defect(s) on Gadobutrol-enhanced CMRI in Participants With Significant LMS Stenosis - Based on Blinded Readers' and Investigator's Assessment
Time frame: 0 to 30/40 min post-injection
Presence of a Myocardial Perfusion Defect Indicating Significant CAD in Participants With Single or Multi-vessel Disease Evaluated on Gadobutrol-enhanced CMRI - Secondary Analysis of Sensitivity Based on Blinded Readers' and Investigator's Assessment
Time frame: 0 to 30/40 min post-injection
Presence of a Myocardial Perfusion Defect Indicating Significant CAD in Participants With Single-vessel Disease Evaluated on Gadobutrol-enhanced CMRI and GSPECT - Additional Secondary Analysis of Sensitivity by Majority Blinded Reader and Investigator
Time frame: 0 to 30/40 min post-injection
Presence of a Myocardial Perfusion Defect Indicating Significant CAD in Participants With Multi-vessel Disease Evaluated on Gadobutrol-enhanced CMRI and GSPECT - Additional Secondary Analysis of Sensitivity by Majority Blinded Reader and Investigator
Time frame: 0 to 30/40 min post-injection
Number of Participants by Their Lowest Confidence in Diagnosis Obtained on Gadobutrol-enhanced CMRI and Unenhanced Wall Motion CMRI - Based on Blinded Readers' and Investigator's Assessment
Time frame: 0 to 30/40 min post-injection
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 31 Jul 2019.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Bayer Study Director study director
Bayer
24 sites in 4 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing Gadobutrol (Gadavist, Gadovist, BAY86-4875) in people with Coronary Artery Disease, run by Bayer at 24 sites in 4 countries.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 31 Jul 2019. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 24 sites in United States, Australia, Canada, Singapore. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 16 May 2018). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Presence of a Myocardial Perfusion Defect Indicating Significant CAD Per Participant on Gadobutrol-enhanced CMRI - Primary Analysis of Sensitivity Based on Blinded Readers' Assessment (time frame: 0 to 30/40 min post-injection). The study lists 6 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 31 Jul 2019.