Hunter syndrome: Boy with rare condition amazes doctors after world-first gene therapy Oliver has an inherited condition called Hunter syndrome, which causes progressive damage to the body and brain.

#OliverChu has a rare, inherited condition called #Huntersyndrome or #MPSII which causes progressive damage to the body and brain. In the most severe cases, patients with the disease usually die before the age of 20, sometimes described as a type of childhood #dementia.
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