Adrenoleukodystrophy (ALD) is an X-linked genetic condition caused by mutations in an ATP-binding cassette gene (ABCD1) that encodes an ABC transporter, which is involved in transporting very long chain fatty acids (VLCFs) to the peroxisome for degradation [1–6]. This evidence concerns the gene ABCG2 and X-linked adrenoleukodystrophy.