As Phase 3 clinical trials begin for Lenti-D as a treatment for patients with X-ALD, the drug also shows promise for treating a range of neurodegenerative diseases.
X‐linked adrenoleukodystrophy (X‐ALD) is a peroxisomal disorder resulting from a mutation in the human ATP-binding cassette, sub-family D, member 1 gene (ABCD1). The ABCD1 gene codes for the adrenoleukodystrophy protein (ALDP) needed for very-long-chain fatty acids (VLCFAs) to enter peroxisomes for degradation. When this process is disrupted, the VLCFAs accumulate in various tissues of the body, including the brain. VLCFA accumulation and demyelination of brain white matter lead to the severe neurological symptoms seen with X-ALD.