Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) sudden infant death with dysgenesis of the testes syndrome ?
    ### Response:
    Sudden infant death with dysgenesis of the testes syndrome (SIDDT) is a rare condition that is fatal in the first year of life; its major features include abnormalities of the reproductive system in males, feeding difficulties, and breathing problems.  Infants with SIDDT who are genetically male, with one X chromosome and one Y chromosome in each cell, have underdeveloped or abnormal testes.
    