In this task, you will be given a sentence. You need to reconize the name of the disorder or disease. Disease is a disorder of structure or function in a human, animal, or plant, especially one that produces specific symptoms or that affects a specific location and is not simply a direct result of physical injury. Although there might be several correct answers, you need to write one of them.

 Mutations in the HEXA gene , encoding the alpha - subunit of beta - hexosaminidase A ( Hex A ) , that abolish Hex A enzyme activity cause Tay - Sachs disease ( TSD ) , the fatal infantile form of G ( M2 ) gangliosidosis , Type 1 .
TSD