Alpha‐synuclein and familial Parkinson's disease
Identifieur interne : 000B69 ( Main/Exploration ); précédent : 000B68; suivant : 000B70Alpha‐synuclein and familial Parkinson's disease
Auteurs : Nathan Pankratz [États-Unis] ; William C. Nichols [États-Unis] ; Veronika E. Elsaesser [États-Unis] ; Michael W. Pauciulo [États-Unis] ; Diane K. Marek [États-Unis] ; Cheryl A. Halter [États-Unis] ; Joanne Wojcieszek [États-Unis] ; Alice Rudolph [États-Unis] ; Ronald F. Pfeiffer [États-Unis] ; Tatiana Foroud [États-Unis]Source :
- Movement Disorders [ 0885-3185 ] ; 2009-06-15.
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Abstract
Whole gene duplications and triplications of alpha‐synuclein (SNCA) can cause Parkinson's disease (PD), and variation in the promoter region (Rep1) and 3' region of SNCA has been reported to increase disease susceptibility. Within our cohort, one affected individual from each of 92 multiplex PD families showing the greatest evidence of linkage to the region around SNCA was screened for dosage alterations and sequence changes; no dosage or non‐synonymous sequence changes were found. In addition, 737 individuals (from 450 multiplex PD families) that met strict diagnostic criteria for PD and did not harbor a known causative mutation, as well as 359 neurologically normal controls, were genotyped for the Rep1 polymorphism and four SNPs in the 3′ region of SNCA. The four SNPs were in high LD (r2 > 0.95) and were analyzed as a haplotype. The effects of the Rep1 genotype and the 3′ haplotype were evaluated using regression models employing only one individual per family. Cases had a 3% higher frequency of the Rep1 263 bp allele compared with controls (OR = 1.54; empirical P‐value = 0.02). There was an inverse linear relationship between the number of 263 bp alleles and age of onset (empirical P‐value = 0.0004). The 3′ haplotype was also associated with disease (OR = 1.29; empirical P‐value = 0.01), but not age of onset (P = 0.40). These data suggest that dosage and sequence changes are a rare cause of PD, but variation in the promoter and 3′ region of SNCA convey an increased risk for PD. © 2009 Movement Disorder Society
Url:
DOI: 10.1002/mds.22524
Affiliations:
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Within our cohort, one affected individual from each of 92 multiplex PD families showing the greatest evidence of linkage to the region around SNCA was screened for dosage alterations and sequence changes; no dosage or non‐synonymous sequence changes were found. In addition, 737 individuals (from 450 multiplex PD families) that met strict diagnostic criteria for PD and did not harbor a known causative mutation, as well as 359 neurologically normal controls, were genotyped for the Rep1 polymorphism and four SNPs in the 3′ region of SNCA. The four SNPs were in high LD (r2 > 0.95) and were analyzed as a haplotype. The effects of the Rep1 genotype and the 3′ haplotype were evaluated using regression models employing only one individual per family. Cases had a 3% higher frequency of the Rep1 263 bp allele compared with controls (OR = 1.54; empirical P‐value = 0.02). There was an inverse linear relationship between the number of 263 bp alleles and age of onset (empirical P‐value = 0.0004). The 3′ haplotype was also associated with disease (OR = 1.29; empirical P‐value = 0.01), but not age of onset (P = 0.40). These data suggest that dosage and sequence changes are a rare cause of PD, but variation in the promoter and 3′ region of SNCA convey an increased risk for PD. © 2009 Movement Disorder Society</div></front></TEI><affiliations><list><country><li>États-Unis</li></country><region><li>Indiana</li><li>Ohio</li><li>Tennessee</li><li>État de New York</li></region></list><tree><country name="États-Unis"><region name="Indiana"><name sortKey="Pankratz, Nathan" sort="Pankratz, Nathan" uniqKey="Pankratz N" first="Nathan" last="Pankratz">Nathan Pankratz</name></region><name sortKey="Elsaesser, Veronika E" sort="Elsaesser, Veronika E" uniqKey="Elsaesser V" first="Veronika E." last="Elsaesser">Veronika E. Elsaesser</name><name sortKey="Foroud, Tatiana" sort="Foroud, Tatiana" uniqKey="Foroud T" first="Tatiana" last="Foroud">Tatiana Foroud</name><name sortKey="Halter, Cheryl A" sort="Halter, Cheryl A" uniqKey="Halter C" first="Cheryl A." last="Halter">Cheryl A. Halter</name><name sortKey="Marek, Diane K" sort="Marek, Diane K" uniqKey="Marek D" first="Diane K." last="Marek">Diane K. Marek</name><name sortKey="Nichols, William C" sort="Nichols, William C" uniqKey="Nichols W" first="William C." last="Nichols">William C. Nichols</name><name sortKey="Nichols, William C" sort="Nichols, William C" uniqKey="Nichols W" first="William C." last="Nichols">William C. Nichols</name><name sortKey="Pauciulo, Michael W" sort="Pauciulo, Michael W" uniqKey="Pauciulo M" first="Michael W." last="Pauciulo">Michael W. Pauciulo</name><name sortKey="Pfeiffer, Ronald F" sort="Pfeiffer, Ronald F" uniqKey="Pfeiffer R" first="Ronald F." last="Pfeiffer">Ronald F. Pfeiffer</name><name sortKey="Rudolph, Alice" sort="Rudolph, Alice" uniqKey="Rudolph A" first="Alice" last="Rudolph">Alice Rudolph</name><name sortKey="Wojcieszek, Joanne" sort="Wojcieszek, Joanne" uniqKey="Wojcieszek J" first="Joanne" last="Wojcieszek">Joanne Wojcieszek</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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