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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/ct2/show/NCT02189837
Registration number
NCT02189837
Ethics application status
Date submitted
8/07/2014
Date registered
15/07/2014
Date last updated
3/10/2018
Titles & IDs
Public title
Effects on Lipoprotein Metabolism From PCSK9 Inhibition Utilizing a Monoclonal Antibody
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Scientific title
Double-blind, Randomized, Placebo-controlled, Single Site Study to Evaluate the Effects of Evolocumab (AMG 145) Treatment, Alone and in Combination With Atorvastatin, on Lipoprotein Kinetics
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Secondary ID [1]
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FLOREY
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Secondary ID [2]
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20130194
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Universal Trial Number (UTN)
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Trial acronym
FLOREY
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Primary Hyperlipidemia and Mixed Dyslipidemia
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Condition category
Condition code
Cardiovascular
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Other cardiovascular diseases
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Blood
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Other blood disorders
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Metabolic and Endocrine
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Other metabolic disorders
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Other interventions - Evolocumab
Treatment: Drugs - Atorvastatin
Treatment: Drugs - Placebo to Evolocumab
Treatment: Drugs - Placebo to Atorvastatin
Placebo Comparator: Placebo - Participants received placebo subcutaneous injection once every 2 weeks on days 1, 15, 29 and 43 and placebo tablets once a day for up to 8 weeks.
Active Comparator: Atorvastatin - Participants received placebo subcutaneous injection once every 2 weeks on days 1, 15, 29 and 43 and 80 mg atorvastatin orally once a day for up to 8 weeks.
Experimental: Evolocumab - Participants received 420 mg evolocumab by subcutaneous injection once every 2 weeks on days 1, 15, 29 and 43 and placebo tablets once a day for up to 8 weeks.
Experimental: Evolocumab and Atorvastatin - Participants received 420 mg evolocumab by subcutaneous injection once every 2 weeks on days 1, 15, 29 and 43 and 80 mg atorvastatin orally once a day for up to 8 weeks.
Other interventions: Evolocumab
Administered by subcutaneous injection
Treatment: Drugs: Atorvastatin
Administered by mouth
Treatment: Drugs: Placebo to Evolocumab
Administered by subcutaneous injection
Treatment: Drugs: Placebo to Atorvastatin
Administered by mouth
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Intervention code [1]
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Other interventions
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Intervention code [2]
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Treatment: Drugs
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Percent Change From Baseline in Low-density Lipoprotein (LDL) Apolipoprotein B-100 Fractional Catabolic Rate (FCR)
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Assessment method [1]
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The fractional catabolic rate (the percentage of apolipoprotein B-100 in LDL which is replaced, transferred or lost per unit of time) was measured at Baseline and Day 50 over 5 consecutive days using the stable isotope tracer, D3-leucine. LDL particles were isolated from plasma by sequential ultracentrifugation, and isotopic enrichment was determined using gas chromatography-mass spectrometry. Mathematical modelling of the protein enrichment data was used to estimate protein catabolism.
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Timepoint [1]
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Baseline (5 days prior to Day 1) and Day 50; plasma samples for fasting lipids were obtained at 0, 5, 10, 20, 30, 40, and 60 min, as well as at 1.5, 2, 2.5, 3, 4, 5, 6, 8, and 10 hours, and 2, 3, 4 and 5 days after D3-leucine administration.
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Secondary outcome [1]
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Percent Change From Baseline in LDL-C at Day 50
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Assessment method [1]
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LDL-C was measured using ultrcentrifugation.
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Timepoint [1]
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Baseline and Day 50
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Secondary outcome [2]
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Percent Change From Baseline in LDL Apolipoprotein B-100 Production Rate (PR)
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Assessment method [2]
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The production rate of apolipoprotein B-100 in LDL was measured at Baseline and Day 50 over 5 consecutive days using the stable isotope tracer, D3-leucine. LDL particles were isolated from plasma by sequential ultracentrifugation and isotopic enrichment was determined using gas chromatography-mass spectrometry. Mathematical modelling of the protein enrichment data was used to estimate the production rate.
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Timepoint [2]
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Baseline and Day 50
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Secondary outcome [3]
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Percent Change From Baseline in Lipoprotein (a) Fractional Catabolic Rate (FCR)
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Assessment method [3]
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The fractional catabolic rate (the percentage of lipoprotein(a) (Lp[a]) which is replaced, transferred or lost per unit of time) was measured at Baseline and Day 50 over 5 consecutive days using the stable isotope tracer, D3-leucine. Lp(a) was isolated from plasma using an immunoprecipitation method employing immunomagnetic beads and polyacrylamide gel electrophoresis. Isotopic enrichment was determined using gas chromatography-mass spectrometry. Mathematical modelling of the protein enrichment data was used to estimate protein catabolism.
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Timepoint [3]
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Baseline (5 days prior to Day 1) and Day 50; plasma samples for fasting lipids were obtained at 0, 5, 10, 20, 30, 40, and 60 min, as well as at 1.5, 2, 2.5, 3, 4, 5, 6, 8, and 10 hours, and 2, 3, 4 and 5 days after D3-leucine administration.
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Secondary outcome [4]
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Percent Change From Baseline in Lipoprotein(a) Production Rate (PR)
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Assessment method [4]
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The production rate of lipoprotein(a) was measured at Baseline and Day 50 over 5 consecutive days using the stable isotope tracer, D3-leucine. Lp(a) was isolated from plasma using an immunoprecipitation method employing immunomagnetic beads and polyacrylamide gel electrophoresis. Isotopic enrichment was determined using gas chromatography-mass spectrometry. Mathematical modelling of the protein enrichment data was used to estimate protein catabolism.
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Timepoint [4]
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Baseline and Day 50
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Eligibility
Key inclusion criteria
- Fasting LDL-C at screening = 100 mg/dL and = 190 mg/dL
- Fasting triglycerides = 150 mg/dL
- Body mass index (BMI) between 18.0 and 32.0 kg/m^2
- Framingham cardiac risk score 10% or less
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Minimum age
18
Years
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Maximum age
65
Years
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Sex
Males
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Can healthy volunteers participate?
Yes
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Key exclusion criteria
- Treatment with a lipid-regulating drug or over the counter supplement in the last 3
months prior to screening
- History of coronary heart disease (CHD) or CHD equivalent
- Uncontrolled hypertension
- Diabetes mellitus
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Randomised controlled trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Blinded (masking used)
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Who is / are masked / blinded?
The people receiving the treatment/s
The people administering the treatment/s
The people analysing the results/data
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Intervention assignment
Parallel
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Other design features
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Phase
Phase 3
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Completed
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
8/07/2014
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
5/03/2015
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Sample size
Target
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Accrual to date
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Final
89
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Recruitment in Australia
Recruitment state(s)
SA,WA
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Recruitment hospital [1]
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Research Site - Adelaide
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Recruitment hospital [2]
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Research Site - Nedlands
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Recruitment postcode(s) [1]
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5000 - Adelaide
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Recruitment postcode(s) [2]
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6009 - Nedlands
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Funding & Sponsors
Primary sponsor type
Commercial sector/Industry
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Name
Amgen
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Address
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Country
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Ethics approval
Ethics application status
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Summary
Brief summary
This is a randomized, double-blind, placebo-controlled trial to evaluate the effect of
evolocumab, atorvastatin, and combination therapy on lipoprotein kinetics.
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Trial website
https://clinicaltrials.gov/ct2/show/NCT02189837
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Trial related presentations / publications
Watts GF, Chan DC, Dent R, Somaratne R, Wasserman SM, Scott R, Burrows S, R Barrett PH. Factorial Effects of Evolocumab and Atorvastatin on Lipoprotein Metabolism. Circulation. 2017 Jan 24;135(4):338-351. doi: 10.1161/CIRCULATIONAHA.116.025080. Epub 2016 Dec 9.
Watts GF, Chan DC, Somaratne R, Wasserman SM, Scott R, Marcovina SM, Barrett PHR. Controlled study of the effect of proprotein convertase subtilisin-kexin type 9 inhibition with evolocumab on lipoprotein(a) particle kinetics. Eur Heart J. 2018 Jul 14;39(27):2577-2585. doi: 10.1093/eurheartj/ehy122. Erratum In: Eur Heart J. 2019 Jan 1;40(1):58.
Chan DC, Watts GF, Somaratne R, Wasserman SM, Scott R, Barrett PHR. Comparative Effects of PCSK9 (Proprotein Convertase Subtilisin/Kexin Type 9) Inhibition and Statins on Postprandial Triglyceride-Rich Lipoprotein Metabolism. Arterioscler Thromb Vasc Biol. 2018 Jul;38(7):1644-1655. doi: 10.1161/ATVBAHA.118.310882. Epub 2018 Jun 7.
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Public notes
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Contacts
Principal investigator
Name
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MD
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Address
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Amgen
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Country
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Phone
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Fax
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Email
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Contact person for public queries
Name
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Address
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Country
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Fax
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Email
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Contact person for scientific queries
Summary Results
For IPD and results data, please see
https://clinicaltrials.gov/ct2/show/NCT02189837
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