You see a new patient who is a 2-month-old boy. He is seeing you because his brother has Hunter syndrome (an X-linked lysosomal storage disorder). On your exam he has no dysmorphic features and is...

You see a new patient who is a 2-month-old boy. He is seeing you because his brother has Hunter syndrome (an X-linked lysosomal storage disorder). On your exam he has no dysmorphic features and is exhibiting normal growth and development. His parents have multiple questions. Which of the following would be a correct statement to share with them?

A. Since Hunter syndrome is X-linked and he is not a female, he will not have it. B. Since he looks normal at this point, he probably does not have Hunter syndrome. C. Since he had newborn screening and that was normal, he could not have Hunter syndrome. D. Enzyme replacement therapy is now available for Hunter syndrome. Early confirmation of his status would be important. E. Lysosomal transplantation should be performed soon on this child.