X-linked adrenoleukodystrophy phenotype is independent of ABCD2 genotype.

Abstract:

:Strikingly variable clinical phenotypes can be found in X-linked adrenoleukodystrophy (X-ALD) even with the same ABCD1 mutation. ABCD2 is the closest homolog to ABCD1. Since ABCD2 overexpression complements the loss of ABCD1 in vivo and in vitro, we have investigated the possible role of the ABCD2 gene locus as determinant of X-ALD phenotypes. Sequence and segregation analysis of the ABCD2 gene, in a large X-ALD family with different phenotypes disclosed that the identical ABCD2 alleles were inherited in brothers affected by mild (noncerebral) versus severe (childhood cerebral) X-ALD phenotypes. Moreover, two independent association studies of ABCD2 polymorphisms and clinical phenotypes showed an even allele distribution in different X-ALD phenotypes and controls. Based on these findings ABCD2 can be excluded as a major modifier locus for clinical diversity in X-ALD. These findings are of particular importance for the attempt of pharmacological induction of ABCD2 as a possible therapeutic approach in X-ALD.

authors

Maier EM,Mayerhofer PU,Asheuer M,Köhler W,Rothe M,Muntau AC,Roscher AA,Holzinger A,Aubourg P,Berger J

doi

10.1016/j.bbrc.2008.09.092

subject

Has Abstract

pub_date

2008-12-05 00:00:00

pages

176-80

issue

1

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(08)01872-X

journal_volume

377

pub_type

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