Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Opitz G/BBB syndrome ?
    ### Response:
    How is Opitz G/BBB syndrome diagnosed? The diagnosis of Opitz G/BBB syndrome is usually based on clinical findings. In order to differentiate the X-linked form from 22q11.2 deletion syndrome (the autosomal dominant form), the pattern of inheritance within the family may be assessed.
    