What happens at the end of metachromatic leukodystrophy?

Loss of function: This is a very rare disease, inherited when both parents are usually carriers. Because of the deficient enzyme, arylsulfatase a, patients suffer from a gradual destruction of myelin sheath, the protective covering of nerves. At the end, loss of muscle function, seizures, possibly coma, and mental illness (in older people) prevail. Unfortunately, no cure, though therapies may improve life quality.