Longitudinal follow-up of SWEDD subjects in the PRECEPT Study
Identifieur interne : 001736 ( Ncbi/Curation ); précédent : 001735; suivant : 001737Longitudinal follow-up of SWEDD subjects in the PRECEPT Study
Auteurs : Kenneth Marek ; John Seibyl ; Shirley Eberly ; David Oakes ; Ira Shoulson ; Anthony E. Lang ; Chris Hyson ; Danna JenningsSource :
- Neurology [ 0028-3878 ] ; 2014.
English descriptors
- KwdEn :
- Adult, Aged, Antiparkinson Agents (therapeutic use), Brain (diagnostic imaging), Brain (metabolism), Dopamine Plasma Membrane Transport Proteins (metabolism), Female, Follow-Up Studies, Humans, Levodopa (therapeutic use), Longitudinal Studies, Male, Middle Aged, Parkinson Disease (diagnostic imaging), Parkinson Disease (drug therapy), Parkinson Disease (metabolism), Radionuclide Imaging, Randomized Controlled Trials as Topic.
- MESH :
- chemical , metabolism : Dopamine Plasma Membrane Transport Proteins.
- chemical , therapeutic use : Antiparkinson Agents, Levodopa.
- diagnostic imaging : Brain, Parkinson Disease.
- drug therapy : Parkinson Disease.
- metabolism : Brain, Parkinson Disease.
- Adult, Aged, Female, Follow-Up Studies, Humans, Longitudinal Studies, Male, Middle Aged, Radionuclide Imaging, Randomized Controlled Trials as Topic.
Abstract
To compare the clinical and imaging characteristics of those PRECEPT (Parkinson Research Examination of CEP-1347 Trial) subjects with a scan without evidence of dopaminergic deficit (SWEDD) to those with dopamine transporter (DAT) deficit scans at study baseline and during a 22-month follow-up.
Baseline (n = 799) and 22-month follow-up (n = 701) [123I] β-CIT SPECT scans were acquired. The percent change in [123I] β-CIT striatal binding ratio, the percentage of subjects requiring dopaminergic therapy, the change in Unified Parkinson's Disease Rating Scale (UPDRS) score, and the PRECEPT Study investigators’ diagnosis at study termination were compared between SWEDD and DAT deficit subjects.
SWEDD subjects (n = 91) compared with DAT deficit subjects (n = 708) showed reduced UPDRS score at baseline (18.7 [SD 8.5] vs 25.5 [SD 10.5],
These results indicate that subjects identified as having a SWEDD, with DAT imaging within the normal range, have minimal evidence of clinical or imaging PD progression. These data strongly suggest that SWEDD subjects are unlikely to have idiopathic PD.
Url:
DOI: 10.1212/WNL.0000000000000424
PubMed: 24759846
PubMed Central: 4035714
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PMC:4035714Le document en format XML
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<author><name sortKey="Marek, Kenneth" sort="Marek, Kenneth" uniqKey="Marek K" first="Kenneth" last="Marek">Kenneth Marek</name>
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<author><name sortKey="Seibyl, John" sort="Seibyl, John" uniqKey="Seibyl J" first="John" last="Seibyl">John Seibyl</name>
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<author><name sortKey="Eberly, Shirley" sort="Eberly, Shirley" uniqKey="Eberly S" first="Shirley" last="Eberly">Shirley Eberly</name>
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<author><name sortKey="Oakes, David" sort="Oakes, David" uniqKey="Oakes D" first="David" last="Oakes">David Oakes</name>
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<author><name sortKey="Shoulson, Ira" sort="Shoulson, Ira" uniqKey="Shoulson I" first="Ira" last="Shoulson">Ira Shoulson</name>
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<author><name sortKey="Lang, Anthony E" sort="Lang, Anthony E" uniqKey="Lang A" first="Anthony E." last="Lang">Anthony E. Lang</name>
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<author><name sortKey="Hyson, Chris" sort="Hyson, Chris" uniqKey="Hyson C" first="Chris" last="Hyson">Chris Hyson</name>
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<author><name sortKey="Eberly, Shirley" sort="Eberly, Shirley" uniqKey="Eberly S" first="Shirley" last="Eberly">Shirley Eberly</name>
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<author><name sortKey="Oakes, David" sort="Oakes, David" uniqKey="Oakes D" first="David" last="Oakes">David Oakes</name>
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<author><name sortKey="Shoulson, Ira" sort="Shoulson, Ira" uniqKey="Shoulson I" first="Ira" last="Shoulson">Ira Shoulson</name>
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<author><name sortKey="Lang, Anthony E" sort="Lang, Anthony E" uniqKey="Lang A" first="Anthony E." last="Lang">Anthony E. Lang</name>
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<author><name sortKey="Hyson, Chris" sort="Hyson, Chris" uniqKey="Hyson C" first="Chris" last="Hyson">Chris Hyson</name>
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<author><name sortKey="Jennings, Danna" sort="Jennings, Danna" uniqKey="Jennings D" first="Danna" last="Jennings">Danna Jennings</name>
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<series><title level="j">Neurology</title>
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<term>Brain (diagnostic imaging)</term>
<term>Brain (metabolism)</term>
<term>Dopamine Plasma Membrane Transport Proteins (metabolism)</term>
<term>Female</term>
<term>Follow-Up Studies</term>
<term>Humans</term>
<term>Levodopa (therapeutic use)</term>
<term>Longitudinal Studies</term>
<term>Male</term>
<term>Middle Aged</term>
<term>Parkinson Disease (diagnostic imaging)</term>
<term>Parkinson Disease (drug therapy)</term>
<term>Parkinson Disease (metabolism)</term>
<term>Radionuclide Imaging</term>
<term>Randomized Controlled Trials as Topic</term>
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<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Dopamine Plasma Membrane Transport Proteins</term>
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<term>Levodopa</term>
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<keywords scheme="MESH" qualifier="diagnostic imaging" xml:lang="en"><term>Brain</term>
<term>Parkinson Disease</term>
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<keywords scheme="MESH" qualifier="drug therapy" xml:lang="en"><term>Parkinson Disease</term>
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<keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Brain</term>
<term>Parkinson Disease</term>
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<keywords scheme="MESH" xml:lang="en"><term>Adult</term>
<term>Aged</term>
<term>Female</term>
<term>Follow-Up Studies</term>
<term>Humans</term>
<term>Longitudinal Studies</term>
<term>Male</term>
<term>Middle Aged</term>
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<front><div type="abstract" xml:lang="en"><sec><title>Objective:</title>
<p>To compare the clinical and imaging characteristics of those PRECEPT (Parkinson Research Examination of CEP-1347 Trial) subjects with a scan without evidence of dopaminergic deficit (SWEDD) to those with dopamine transporter (DAT) deficit scans at study baseline and during a 22-month follow-up.</p>
</sec>
<sec><title>Methods:</title>
<p>Baseline (n = 799) and 22-month follow-up (n = 701) [<sup>123</sup>
I] β-CIT SPECT scans were acquired. The percent change in [<sup>123</sup>
I] β-CIT striatal binding ratio, the percentage of subjects requiring dopaminergic therapy, the change in Unified Parkinson's Disease Rating Scale (UPDRS) score, and the PRECEPT Study investigators’ diagnosis at study termination were compared between SWEDD and DAT deficit subjects.</p>
</sec>
<sec><title>Results:</title>
<p>SWEDD subjects (n = 91) compared with DAT deficit subjects (n = 708) showed reduced UPDRS score at baseline (18.7 [SD 8.5] vs 25.5 [SD 10.5], <italic>p</italic>
< 0.05) and minimal change in both [<sup>123</sup>
I] β-CIT striatal binding ratio (−0.2% [SD 12.2] vs −8.5% [SD 11.9], <italic>p</italic>
< 0.0001) and UPDRS score (0.5 [SD 6.9] vs 10.5 [SD 8.9], <italic>p</italic>
< 0.0001) at follow-up assessments. At PRECEPT termination, the diagnosis by study investigators was changed from Parkinson disease (PD) to other disorders not associated with DAT deficit in 44% (95% confidence interval 34.2, 54.7) of SWEDD subjects compared with 3.6% (95% confidence interval 2.3, 5.1) of DAT deficit subjects.</p>
</sec>
<sec><title>Conclusion:</title>
<p>These results indicate that subjects identified as having a SWEDD, with DAT imaging within the normal range, have minimal evidence of clinical or imaging PD progression. These data strongly suggest that SWEDD subjects are unlikely to have idiopathic PD.</p>
</sec>
</div>
</front>
</TEI>
</record>
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