Screening Study to Identify Pediatric Patients With Hunter Syndrome Who Demonstrate Evidence of Central Nervous System (CNS) Involvement and Who Are Currently Receiving Treatment With Elaprase®

If the patient is found to be eligible after completion of a telephone interview, he will undergo further testing to assess his neurodevelopmental status using a standardized battery of neurobehavioral testing.

If the patient is found to be eligible after completion of a telephone interview, he will undergo further testing to evaluate his visual and auditory function.