- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00005327
Prevention of Cerebral Infarction in Sickle Cell Anemia - Comprehensive Sickle Cell Center
Study Overview
Status
Detailed Description
BACKGROUND:
Cerebral infarction is a major contributor to childhood morbidity and mortality in sickle cell anemia (SCA)
DESIGN NARRATIVE:
The investigators tested the hypotheses that young children with SCA experienced a variable period of asymptomatic progressive central nervous system (CNS) vasculopathy prior to cerebral infarction; that pre-infarct CNS vasculopathy could be identified by non-invasive imaging techniques:MRI, magnetic resonance angiography (MRA), and transcranial Doppler (TCD); and that therapeutic intervention at this stage of the disease could significantly reduce the subsequent occurrence of cerebral infarction. MRI, MRA, TCD, and standardized neurologic and psychometric examinations were performed yearly in a cohort of homozygous Hb SS children enrolled at 2-4 years of age. Subjects without MRI evidence of cerebral infarction who had significant cerebral vasculopathy (cerebral arterial stenosis on MRA and/or elevated blood flow velocity on TCD) were randomized to receive either no therapy or chronic transfusion therapy, in order to determine the risk of subsequent cerebral infarction in untreated subjects with these abnormalities, and the extent to which transfusion therapy could significantly reduce the risk. Subjects with evidence of prior cerebral infarction on MRI, whether symptomatic or asymptomatic, were randomized to receive either chronic transfusion therapy alone ('standard therapy') or chronic transfusion therapy plus ticlopidine, in order to determine whether ticlopidine could significantly increase the efficacy of standard therapy in preventing recurrent cerebral infarction in SCA. Subjects with prior cerebral infarction were also offered the option of bone marrow transplantation if an HLA-identical non-SS sibling donor was available.
Study Type
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Study Plan
How is the study designed?
Collaborators and Investigators
Collaborators
Investigators
- Darleen Powars, University of Southern California
Publications and helpful links
General Publications
- Powars DR, Conti PS, Wong WY, Groncy P, Hyman C, Smith E, Ewing N, Keenan RN, Zee CS, Harold Y, Hiti AL, Teng EL, Chan LS. Cerebral vasculopathy in sickle cell anemia: diagnostic contribution of positron emission tomography. Blood. 1999 Jan 1;93(1):71-9.
- Powars DR. Management of cerebral vasculopathy in children with sickle cell anaemia. Br J Haematol. 2000 Mar;108(4):666-78. doi: 10.1046/j.1365-2141.2000.01912.x. No abstract available.
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 4117
- P60HL048484 (U.S. NIH Grant/Contract)
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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