ICD-11 definition : Any condition caused by deficient catabolism of the GM2 ganglioside substrate due
to genetic mutation. These conditions are characterized by progressive neurodegeneration
and developmental delay.;
ICD-11 synonym : deficiency of beta-n-acetylhexosaminidase isoenzymes; GM sub 2 /sub gangliosidosis;
ICD-11 inclusion : severe hexosaminidase a deficiency; GM 2 gangliosidosis NOS;
Any condition caused by deficient catabolism of the GM2 ganglioside substrate due
to genetic mutation. These conditions are characterized by progressive neurodegeneration
and developmental delay.