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Trial registered on ANZCTR
Registration number
ACTRN12610000145000
Ethics application status
Approved
Date submitted
9/02/2010
Date registered
12/02/2010
Date last updated
11/07/2012
Type of registration
Retrospectively registered
Titles & IDs
Public title
Red Cell Life Span (RBC) in Chronic Kidney Disease (CKD)
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Scientific title
Red Blood Cell (RBC) Survival in Patients with Chronic Kidney Disease (CKD) and on Dialysis
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Secondary ID [1]
1399
0
none
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Chronic Kidney Disease
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Red blood cell life span
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Condition category
Condition code
Renal and Urogenital
256933
256933
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0
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Kidney disease
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Blood
256934
256934
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0
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Anaemia
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Intervention/exposure
Study type
Observational
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Patient registry
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Target follow-up duration
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Target follow-up type
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Description of intervention(s) / exposure
This study is designed to investigate red blood cell survival in patients with moderate CKD, on haemodialysis and on peritoneal dialysis in comparison with controls. RBC survival will be measured by means of labelling with radioactive chromium, whereby a sample of RBCs of a cross-section of ages is tagged and the disappearance of radioactivity is followed over a period of 4 weeks time.
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Intervention code [1]
255991
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Not applicable
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Comparator / control treatment
Red blood cell survival in patients with CKD will be compared with the red blood cell survival of healthy controls.
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Control group
Active
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Outcomes
Primary outcome [1]
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red blood cell survival in patients with moderate CKD, on haemodialysis and on peritoneal dialysis in comparison with controls. Red blood cell life span will be measured by labelling a sample of RBCs with radioactive chromium and then disappearance of radioactivity is followed over time.
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Assessment method [1]
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Timepoint [1]
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The baseline (equivalent to 100% of systemically administered radioactivity) sample (10ml) will be collected after 10-30 minutes. Subsequent samples will be collected every 3-4 days till day 24 and the final sample will be collected on day 32.
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Secondary outcome [1]
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Nil
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Assessment method [1]
263230
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Timepoint [1]
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Nil
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Eligibility
Key inclusion criteria
Patients of at least 18 years of age and on dialysis at least for 2 months haemodialysis (HD) and peritoneal dialysis (PD) will be invited to participate in this study, stable subjects with moderate CKD (stage III, defined as a glomerular filtration rate (GFR) (30-59 ml/min), subjects with diabetes mellitus with normal renal function and healthy controls
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Minimum age
18
Years
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Maximum age
No limit
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Sex
Both males and females
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Can healthy volunteers participate?
Yes
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Key exclusion criteria
HD and PD patients not on erythropoietin and/or iron supplement therapy. Haemoglobin concentrations not within the recommended target range (Hb: 110-130 g/l). Evidence of recent blood loss and or recent blood transfusion. Intercurrent inflammatory illness or drugs which may influence bone marrow function. Solid organ maligancy. Unstable glycaemic control. Pregnancy. Women of child bearing potential will be advised to practise ab acceptable form of contraception for the duration of the study.
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Study design
Purpose
Natural history
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Duration
Longitudinal
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Selection
Defined population
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Timing
Prospective
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Statistical methods / analysis
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Recruitment
Recruitment status
Recruiting
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Date of first participant enrolment
Anticipated
1/10/2009
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Actual
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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
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Sample size
Target
56
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Accrual to date
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Final
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Recruitment outside Australia
Country [1]
2473
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New Zealand
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State/province [1]
2473
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Funding & Sponsors
Funding source category [1]
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University
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Name [1]
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Otago Medical Research Foundation
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Address [1]
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PO Box 1245 Dunedin 9010
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Country [1]
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New Zealand
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Primary sponsor type
University
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Name
University of Otago
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Address
Great King Street PO Box 913 Dunedin 9010
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Country
New Zealand
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Secondary sponsor category [1]
255808
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Hospital
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Name [1]
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Dunedin Hospital
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Address [1]
255808
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Great King Street Private Bag Dunedin 9010
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Country [1]
255808
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New Zealand
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
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Lower South Regional Ethics Committee
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Ethics committee address [1]
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PO Box 5849 Dunedin 9010
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Ethics committee country [1]
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New Zealand
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Date submitted for ethics approval [1]
258544
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Approval date [1]
258544
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07/09/2009
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Ethics approval number [1]
258544
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Summary
Brief summary
Anaemia associated with chronic kidney disease (CKD) is believed to be caused by erythropoietin deficiency and decreased red blood cell (RBC) survival. The toxic uremic environment and mechanical damage caused by dialysis is thought to account for the reduced red cell life span. However the clinical evidence for this is minimal. To date no accurate data on RBC survival in CKD is available. We propose to undertake a study to investigate red blood cell survival in patients with moderate CKD, on haemodialysis and on peritoneal dialysis in comparison with controls. RBC survival will be measured by means of labelling with radioactive chromium. As almost half the patients with CKD are diabetic, glycaemic control remains an important aspect of their management. Therefore RBC survival will influence the accuracy of markers of glycaemic control, like HbA1c.
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Trial website
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Trial related presentations / publications
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Public notes
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Contacts
Principal investigator
Name
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Address
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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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Dr Frederiek Vos
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Address
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Medical & Surgical Sciences
Dunedin School of Medicine
University of Otago
PO Box 913 Dunedin 9010
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Country
14067
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New Zealand
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Phone
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+64 3 4740999
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Fax
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+64 3 4747641
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Email
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[email protected]
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Contact person for scientific queries
Name
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Dr Frederiek Vos
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Address
4995
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Medical & Surgical Sciences
Dunedin School of Medicine
University of Otago
PO Box 913 Dunedin 9010
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Country
4995
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New Zealand
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Phone
4995
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+64 3 4740999
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Fax
4995
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+64 3 4747641
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Email
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[email protected]
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No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Documents added manually
No documents have been uploaded by study researchers.
Documents added automatically
No additional documents have been identified.
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