Evaluate the Efficacy and Safety of Once Daily Administration of Atrasentan Tablets (Low and High) Compared to Placebo in Reducing Residual Albuminuria in Type 2 Diabetic Patients With Nephropathy Who Are Treated With the Maximum Tolerated Labeled Dose of a Renin Angiotensin System (RAS) Inhibitor
RADAR
RADAR: Reducing Residual Albuminuria in Subjects With Diabetes and Nephropathy With AtRasentan - A Phase 2b, Prospective, Randomized, Double-Blind, Placebo-Controlled Trial to Evaluate Safety and Efficacy
1 other identifier
interventional
149
4 countries
72
Brief Summary
Prospective, Randomized, Double-Blind, Placebo-Controlled Multicenter Study. The objective of the study is to evaluate the efficacy and safety of once daily administration of atrasentan tablets (low dose and high dose) compared to placebo in reducing residual albuminuria in Type 2 diabetic patients with nephropathy who are treated with the maximum tolerated labeled dose of a Renin Angiotensin System (RAS) inhibitor. If the patient is already receiving a maximum tolerated labeled daily dose of RAS inhibitor and a diuretic, he/she will complete 4 weeks of the Run-in Period on a dose that has not been adjusted. If the patient is currently not receiving a maximum labeled daily dose of a RAS inhibitor then the dose will be titrated up to the maximum tolerated labeled dose over the course of 4 to 8 weeks during the Run-in Period. It is expected that subjects not receiving a diuretic will have a diuretic added or titrated during this period to maximize RAS inhibition. Following titration to the maximum tolerated labeled dose, the patient will complete an additional 4 weeks of Run-In Period on an unchanged doses of RAS inhibitor and diuretics, unless medically contraindicated. The randomization will be stratified based on country where subjects are enrolled into the study, and the Week -1 Urinary Albumin to Creatinine Ratio (UACR) levels (\< or = 1000 mg/g \[113 mg/mmol\], or \> 1000 mg/g \[113 mg/mmol\]). Within each stratum, subjects will be randomly assigned in a 1:2:2 ratio to one of the following blinded treatment groups: Group A - Placebo once daily (QD) Group B - low dose atrasentan QD Group C - high dose atrasentan QD After the 12 weeks of study drug treatment, subjects will be followed up to 30 days.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_2
Started Apr 2011
Shorter than P25 for phase_2
72 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
Study Start
First participant enrolled
April 1, 2011
CompletedFirst Submitted
Initial submission to the registry
April 19, 2011
CompletedFirst Posted
Study publicly available on registry
May 20, 2011
CompletedPrimary Completion
Last participant's last visit for primary outcome
August 1, 2012
CompletedStudy Completion
Last participant's last visit for all outcomes
August 1, 2012
CompletedAugust 28, 2013
August 1, 2013
1.3 years
April 19, 2011
August 20, 2013
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Change from baseline to Week 12 in Urinary Albumin to Creatinine Ratio (UACR)
Every two weeks for 12 weeks
Secondary Outcomes (3)
Differences in change from baseline to each post baseline measure for estimated glomerular filtration rate (eGFR)
Every two weeks for 12 weeks
Differences in change from baseline to each post baseline measure for EQ-5D Index Score
Once a month for 3 months
Differences in change from baseline to each post baseline measure for each of the Kidney Disease Quality of Life (KDQOL) Kidney Disease Targeted Scales
Once a month for 3 months
Study Arms (3)
Group A - Placebo QD
PLACEBO COMPARATORGroup B - Low dose Atrasentan QD
ACTIVE COMPARATORGroup C - High dose Atrasentan QD
ACTIVE COMPARATORInterventions
Subjects will take two tablets daily of either low dose Atrasentan QD or high dose Atrasentan QD for 12 weeks during the treatment period.
Subjects will take two tablets daily of placebo QD for 12 weeks during the treatment period.
Eligibility Criteria
You may qualify if:
- Patient is \> or = 18 years old.
- Patient has Type 2 diabetes and has been treated with at least one anti hyperglycemic medication within the 12 months prior to the Screening Period.
- Patient is currently receiving an angiotensin converting enzyme inhibitor (ACEi) or Angiotensin II receptor blocker (ARB) (Renin Angiotensin System (RAS) inhibitor).
- For entry in the Run-in Period the patient must satisfy the following criteria based on the Screening laboratory values:
- Estimated glomerular filtration rate (eGFR) ≥ 30 and ≤ 75 mL/min/1.73m2 by Epidemiology Collaboration (EPI) formula
- Urinary Albumin to Creatinine Ratio (UACR) \> or = 300 and \< or = 3500 mg/g as determined by the geometric mean of the two morning void urine specimens obtained at the Screening visit (UACR \> or = 34 mg/mmol and \< or = 396 mg/mmol)
- Serum albumin \> or = 3.0 g/dL (30 g/L) - B-type Natriuretic Peptide (BNP) \< or = 200 pg/mL (57.8 pmol/L) \* Negative serum pregnancy test for female patients
- Systolic Blood Pressure (SBP) \> or = 110 mmHg and \< or = 180 mmHg
- Glucosylated hemoglobin A1c (HbA1c) \< or = 12%
- For entry in the Treatment Period the patient must satisfy the following criteria based on the last visit of the Run-in Period laboratory values:
- Renin Angiotensin System (RAS) inhibitor at maximum tolerated labeled dose for the previous 4 weeks with no adjustments of dose
- Diuretic at any dose unless medically contraindicated (with the exception of loop diuretics \> or = 120 mg QD of furosemide or \> or = 3.0 mg QD of bumetanide or \> or = 150 mg QD of ethacrynic acid or \> or = 60 mg QD of torasemide)
- Urinary Albumin to Creatinine Ratio (UACR) \> or = 200 and \< or = 3500 mg/g as determined by the median of the three morning void urine specimens obtained prior to the Week -1 visit (UACR \> or = 23 mg/mmol and \< or = 396 mg/mmol)
- Systolic blood pressure (SBP) \> or = 110 mmHg and \< or = 160 mmHg
- Serum Potassium \< or = 5.5 mEq/L (5.5 mmol/L)
- +1 more criteria
You may not qualify if:
- Patient has a history of moderate or severe edema, facial edema unrelated to trauma, or a history of myxedema in the prior 6 months to Screening.
- Patient is receiving loop diuretics \> or = 120 mg QD of furosemide or \> or = 3.0 mg QD of bumetanide or \> or = 150 mg QD of ethacrynic acid or \> or = 60 mg QD of torasemide.
- Patient has a history of pulmonary edema.
- Patient has a history of pulmonary hypertension, or any lung diseases requiring oxygen therapy (i.e., chronic obstructive pulmonary disease, emphysema, pulmonary fibrosis).
- Patient has a history of orthostatic hypotension within the past 6 months as defined by the presence of a supine-to-standing blood pressure decrease \> or = 20 mmHg systolic or \> or = 10 mmHg diastolic within 3 minutes of standing.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (72)
Site Reference ID/Investigator# 46345
Pell City, Alabama, 35128, United States
Site Reference ID/Investigator# 46035
Tempe, Arizona, 85284, United States
Site Reference ID/Investigator# 46016
Azusa, California, 91702, United States
Site Reference ID/Investigator# 45992
Chula Vista, California, 91910, United States
Site Reference ID/Investigator# 46000
La Mesa, California, 91942, United States
Site Reference ID/Investigator# 46038
Lincoln, California, 95648, United States
Site Reference ID/Investigator# 45994
Long Beach, California, 90806, United States
Site Reference ID/Investigator# 45998
Los Angeles, California, 90022, United States
Site Reference ID/Investigator# 47584
Los Gatos, California, 95032, United States
Site Reference ID/Investigator# 64465
National City, California, 91950, United States
Site Reference ID/Investigator# 65862
Orange, California, 92868, United States
Site Reference ID/Investigator# 46019
Riverside, California, 92505, United States
Site Reference ID/Investigator# 46110
Salinas, California, 93901, United States
Site Reference ID/Investigator# 46017
Yuba City, California, 95991, United States
Site Reference ID/Investigator# 46662
Westminster, Colorado, 80031, United States
Site Reference ID/Investigator# 46033
Coral Gables, Florida, 33134, United States
Site Reference ID/Investigator# 45989
Hialeah, Florida, 33012, United States
Site Reference ID/Investigator# 46667
Lauderdale Lakes, Florida, 33313, United States
Site Reference ID/Investigator# 46123
Miami, Florida, 33135, United States
Site Reference ID/Investigator# 46115
Ocala, Florida, 34471, United States
Site Reference ID/Investigator# 46664
Pembroke Pines, Florida, 33027, United States
Site Reference ID/Investigator# 46031
Pembroke Pines, Florida, 33028, United States
Site Reference ID/Investigator# 46040
Pembroke Pines, Florida, 33028, United States
Site Reference ID/Investigator# 46122
Port Charlotte, Florida, 33952, United States
Site Reference ID/Investigator# 46015
West Palm Beach, Florida, 33401, United States
Site Reference ID/Investigator# 50482
Jonesboro, Georgia, 30236, United States
Site Reference ID/Investigator# 46034
Meridian, Idaho, 83642, United States
Site Reference ID/Investigator# 46666
Chicago, Illinois, 60616, United States
Site Reference ID/Investigator# 45996
Evergreen Park, Illinois, 60805, United States
Site Reference ID/Investigator# 46002
Gurnee, Illinois, 60031, United States
Site Reference ID/Investigator# 46111
Shreveport, Louisiana, 71101, United States
Site Reference ID/Investigator# 46030
Oxon Hill, Maryland, 20745, United States
Site Reference ID/Investigator# 45991
Rockville, Maryland, 20852, United States
Site Reference ID/Investigator# 46025
Novi, Michigan, 48374, United States
Site Reference ID/Investigator# 46023
Brooklyn Center, Minnesota, 55430, United States
Site Reference ID/Investigator# 46062
Farmington, Missouri, 63640, United States
Site Reference ID/Investigator# 48942
Omaha, Nebraska, 68131-3403, United States
Site Reference ID/Investigator# 46349
Omaha, Nebraska, 68131, United States
Site Reference ID/Investigator# 46116
Las Vegas, Nevada, 89106, United States
Site Reference ID/Investigator# 50483
Albany, New York, 12206, United States
Site Reference ID/Investigator# 68328
New Hyde Park, New York, 11042, United States
Site Reference ID/Investigator# 65863
Asheville, North Carolina, 28801, United States
Site Reference ID/Investigator# 50529
Greensboro, North Carolina, 27408, United States
Site Reference ID/Investigator# 46129
Greenville, North Carolina, 27834, United States
Site Reference ID/Investigator# 46022
Morehead City, North Carolina, 28557, United States
Site Reference ID/Investigator# 46224
Doylestown, Pennsylvania, 18901, United States
Site Reference ID/Investigator# 46028
Orangeburg, South Carolina, 29118, United States
Site Reference ID/Investigator# 46702
Orangeburg, South Carolina, 29118, United States
Site Reference ID/Investigator# 46024
Greenville, Texas, 75402, United States
Site Reference ID/Investigator# 46228
Houston, Texas, 77004, United States
Site Reference ID/Investigator# 47068
Houston, Texas, 77004, United States
Site Reference ID/Investigator# 64464
Houston, Texas, 77054, United States
Site Reference ID/Investigator# 64483
Mission, Texas, 78572, United States
Site Reference ID/Investigator# 46348
San Antonio, Texas, 78215, United States
Site Reference ID/Investigator# 46063
San Antonio, Texas, 78229-4801, United States
Site Reference ID/Investigator# 68486
San Antonio, Texas, 78229, United States
Site Reference ID/Investigator# 46669
Bennington, Vermont, 05201, United States
Site Reference ID/Investigator# 46026
Alexandria, Virginia, 22304, United States
Site Reference ID/Investigator# 46027
Fairfax, Virginia, 22030, United States
Site Reference ID/Investigator# 67762
Kitchener, N2H 5Z8, Canada
Site Reference ID/Investigator# 50526
Sarnia, N7T 4X3, Canada
Site Reference ID/Investigator# 50525
Thornhill, L4J 8L7, Canada
Site Reference ID/Investigator# 47067
Caguas, 00725, Puerto Rico
Site Reference ID/Investigator# 50522
ManatÃ, 00674, Puerto Rico
Site Reference ID/Investigator# 46352
Ponce, 00717-1322, Puerto Rico
Site Reference ID/Investigator# 46351
Ponce, 00717-2075, Puerto Rico
Site Reference ID/Investigator# 46133
Ponce, 00717, Puerto Rico
Site Reference ID/Investigator# 46131
Rio Piedras, 00935, Puerto Rico
Site Reference ID/Investigator# 46132
San Juan, 00918, Puerto Rico
Site Reference ID/Investigator# 46230
Santurce, 00909-2244, Puerto Rico
Site Reference ID/Investigator# 51566
Taichung, 40447, Taiwan
Site Reference ID/Investigator# 51567
Taichung, 40705, Taiwan
Related Publications (2)
Smeijer JD, Kohan DE, Rossing P, Correa-Rotter R, Liew A, Tang SCW, de Zeeuw D, Gansevoort RT, Ju W, Lambers Heerspink HJ. Insulin resistance, kidney outcomes and effects of the endothelin receptor antagonist atrasentan in patients with type 2 diabetes and chronic kidney disease. Cardiovasc Diabetol. 2023 Sep 16;22(1):251. doi: 10.1186/s12933-023-01964-8.
PMID: 37716952DERIVEDLin CW, Mostafa NM, L Andress D, J Brennan J, Klein CE, Awni WM. Relationship Between Atrasentan Concentrations and Urinary Albumin to Creatinine Ratio in Western and Japanese Patients With Diabetic Nephropathy. Clin Ther. 2018 Feb;40(2):242-251. doi: 10.1016/j.clinthera.2017.07.011. Epub 2017 Jul 27.
PMID: 28756065DERIVED
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Officials
- STUDY DIRECTOR
Blai Coll, MD
AbbVie
Study Design
- Study Type
- interventional
- Phase
- phase 2
- Allocation
- RANDOMIZED
- Masking
- QUADRUPLE
- Who Masked
- PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
April 19, 2011
First Posted
May 20, 2011
Study Start
April 1, 2011
Primary Completion
August 1, 2012
Study Completion
August 1, 2012
Last Updated
August 28, 2013
Record last verified: 2013-08