Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) 2-hydroxyglutaric aciduria ?
    ### Response:
    2-hydroxyglutaric aciduria is a condition that causes progressive damage to the brain. The major types of this disorder are called D-2-hydroxyglutaric aciduria (D-2-HGA), L-2-hydroxyglutaric aciduria (L-2-HGA), and combined D,L-2-hydroxyglutaric aciduria (D,L-2-HGA).
    