Tags: Disease.
Tay–Sachs disease (also known as GM2 gangliosidosis or hexosaminidase A deficiency ) is a rare autosomal recessive genetic disorder. In its most common variant (known as infantile Tay–Sachs disease) it causes a progressive deterioration of nerve cells and of mental and physical abilities that commences around six months of age and usually results in death by the age of four.
