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Clinical Chemistry and Laboratory Medicine (CCLM)

Published in Association with the European Federation of Clinical Chemistry and Laboratory Medicine (EFLM)

Editor-in-Chief: Plebani, Mario

Ed. by Gillery, Philippe / Greaves, Ronda / Lackner, Karl J. / Lippi, Giuseppe / Melichar, Bohuslav / Payne, Deborah A. / Schlattmann, Peter

IMPACT FACTOR 2018: 3.638

CiteScore 2018: 2.44

SCImago Journal Rank (SJR) 2018: 1.191
Source Normalized Impact per Paper (SNIP) 2018: 1.205

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Volume 38, Issue 9


Genotyping of CYP2D6 in Parkinsons's Disease

Mario Štefanovic / Elizabeta Topić / Ana Maria Ivanišević / Maja Relja / Marta Koršić
Published Online: 2005-06-01 | DOI: https://doi.org/10.1515/CCLM.2000.136


Parkinson's disease is characterized by progressive degradation of dopaminergic neurons. Cytochrome P450 CYP2D6 enzyme is one of the most investigated and highly polymorphic isoforms, which metabolizes many drugs and is also involved in the metabolism of dopamine. Using allele-specific multiplex PCR, we genotyped 186 subjects for CYP2D6 *3, *4, *6, *7, and *8 alleles in order to estimate allelic, genotype and predicted phenotype frequencies in the control and patient groups, and to investigate the possible statistical difference between Parkinson's disease patients (n=41) and healthy controls (n=145). Parkinson's disease patients were further divided into two subgroups according to Hoehn and Yahr staging of the disease (HY), i.e. groups with HY stage less than 2.5 (HY <2.5; n=27) and more than 2.5 (HY >2.5; n=14). A subgroup of Parkinson's disease patients exhibiting side effects such as “on-off” phenomenon and dyskinesia (both suggesting favorable response to therapy) were compared with a subgroup of patients showing no such response. The preliminary results of this study showed that only the prevalence of CYP2D6 *4 allele differed significantly between the PD patients and control group (20.7% vs. 11.0%; p=0.027; RR=2.1, 95%CI 1.113−3.994). In the HY >2.5 subgroup, the CYP2D6*4 allelic difference was even greater (25.0% vs. 11.0% in controls; p=0.062, RR=2.69, 95%CI 1.090−6.624). Genotype frequencies differed only in the HY >2.5 subgroup, however with a level of significance of p=0.095.

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Published Online: 2005-06-01

Published in Print: 2000-09-18

Citation Information: Clinical Chemistry and Laboratory Medicine, Volume 38, Issue 9, Pages 929–934, ISSN (Print) 1434-6621, DOI: https://doi.org/10.1515/CCLM.2000.136.

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