Table.
Abbreviations: ASA = arylsulfatase A; GMFC-MLD = Gross Motor Function Classification system for MLD; MLD = metachromatic leukodystrophy; NA = not available; NCV = nerve conduction velocity.
Patients 12 and 18 are siblings.
Nerve conduction velocity of median nerve in ms (normal 45–55 ms).
Units for ASA activity: nmol/h/mg (normal 20–110 nmol/h/mg).
Homozygous genotypes.
The most common mutation for late-infantile MLD.
In combination with rs743616.
The protein is probably not generated due to nonsense-mediated mRNA decay.