LOCALIZATION OF FRIEDREICH ATAXIA PHENOTYPE WITH SELECTIVE VITAMIN-E-DEFICIENCY TO CHROMOSOME-8Q BY HOMOZYGOSITY MAPPING

被引：170

作者：

BENHAMIDA, C

DOERFLINGER, N

BELAL, S

LINDER, C

REUTENAUER, L

DIB, C

GYAPAY, G

VIGNAL, A

LEPASLIER, D

COHEN, D

PANDOLFO, M

MOKINI, V

NOVELLI, G

HENTATI, F

BENHAMIDA, M

MANDEL, JL

KOENIG, M

机构：

[1] INST NATL NEUROL, NEUROBIOL MOLEC & NEUROPATHOL LAB, RABTA, TUNISIA

[2] FAC MED STRASBOURG, GENET MOLEC LAB,CNRS,U 184,INSERM, STRASBOURG, FRANCE

[3] CTR HOSP REG & UNIV STRASBOURG, STRASBOURG, FRANCE

[4] GENETHON, EVRY, FRANCE

[5] CTR ETUD POLYMORPHISME HUMAIN, PARIS, FRANCE

[6] IST NEUROCHIRURG C BESTA, I-20133 MILAN, ITALY

[7] UNIV TIRANA, DEPT PEDIAT, Tirana, ALBANIA

[8] UNIV CATTOLICA SACRO CUORE, CHAIR HUMAN GENET, I-00168 ROME, ITALY

来源：

NATURE GENETICS | 1993年 / 5卷 / 02期

关键词：

D O I：

10.1038/ng1093-195

中图分类号：

Q3 [遗传学];

学科分类号：

071007 ; 090102 ;

摘要：

Friedreich ataxia and ataxia with selective vitamin E deficiency (AVED) share very similar clinical phenotypes. We have mapped the AVED locus to proximal 8q with only three large consanguinous Tunisian families, representing to our knowledge the first use of homozygosity mapping for primary linkage analysis. Subsequently, three additional families showed linkage with the same markers. A maximum lod score of 17.9 was obtained at theta = 0 for the haplotype D8S260-D8S510, consisting of the two closest markers. With only 6 families, the AVED locus is therefore mapped precisely as illustrated by the lod-1 confidence interval of 2.4 cM on either side of D8S260-D8S510. Isolation of a yeast artificial chromosome contig >800 kilobases (kb) showed that D8S260 and D8S510 are less than 400 kb apart.

引用

页码：195 / 200

页数：6

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