Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) methylmalonic acidemia with homocystinuria ?
    ### Response:
    Methylmalonic acidemia with homocystinuria is an inherited disorder in which the body is unable to properly process protein building blocks (amino acids), certain fats (lipids), and a waxy fat-like substance called cholesterol. Individuals with this disorder have a combination of features from two separate conditions, methylmalonic acidemia and homocystinuria.
    