Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) carnitine-acylcarnitine translocase deficiency ?
    ### Response:
    Carnitine-acylcarnitine translocase (CACT) deficiency is a condition that prevents the body from using certain fats for energy, particularly during periods without food (fasting). Signs and symptoms of this disorder usually begin soon after birth and may include breathing problems, seizures, and an irregular heartbeat (arrhythmia).
    