Stem Cell Transplant for Inborn Errors of Metabolism

Inclusion Criteria: * Patients with adrenoleukodystrophy, metachromatic leukodystrophy, globoid cell leukodystrophy, Gaucher's disease, Fucosidosis, Wolman disease, Niemann-Pick disease and Batten disease (CLN3) who have a human leukocyte antigen (HLA)-identical or haplotype mismatched (at 1-3 antigens) related marrow, or umbilical cord blood donor. One or two umbilical cord blood (UCB) units may be used. * Patients with GM1 gangliosidosis, Tay Sachs disease or Sandhoff disease who have a HLA-identical or 1 antigen mismatched related or unrelated donor, or suitably matched umbilical cord blood unit(s). One or two UCB units may be used. * Patients with adrenoleukodystrophy must have magnetic resonance imaging (MRI) findings, neurological and neuropsychometric function consistent with the diagnosis, and for boys with parietal-occipital dysmyelination a performance intelligence quotient (IQ) ≥80. In cases, when the performance IQ is not ≥80, the protocol committee may recommend transplant if the patient's clinical condition and neuropsychometric status are deemed to be acceptable based upon consideration of such factors as age at onset of cerebral disease, magnitude of change in performance IQ and neurologic deficits. * Patients with arylsulfatase A deficiency (Metachromatic Leukodystrophy) must have either the presymptomatic late infantile, juvenile or adult form of the disease and must have acceptable neurological and neuropsychometric function. * Patients with galactocerebro…