Adrenoleukodystrophy (ALD) is a peroxisomal disorder that commonly man
ifests as demyelination of the central nervous system (CNS). The isola
tion of the ALD gene by positional cloning has led to the identificati
on of a variety of mutations in the ALD gene. One hundred and ten muta
tions have been identified to date, of which approximately 50% are mis
sense mutations. While rapid DNA based diagnoses of ALD is now possibl
e, there appears to be no simple correlation between genotype and phen
otype. (C) 1997 Wiley-Liss, Inc.