As used in this Act, unless the context requires otherwise:
"Chairperson" means the Chairperson of the Rare Disease Commission.
"Commission" means the Rare Disease Commission.
"Rare disease" means a disease that affects less than 200,000 people in the United States.
"Relative" means a spouse, parent, parent-in-law, sibling, sibling-in-law, child, child-in-law, grandparent, aunt, or uncle.
"Vice-Chairperson" means the Vice-Chairperson of the Rare Disease Commission.
410 ILCS 445/5