Assertion: narcolepsy | /r/HasProperty | linked to low levels of hypocretin
Facets:
value: in the brain
type: LOCATION
Source sentences:
text: The National Organization for Rare Disorders reports that type 1 narcolepsy has been linked to low levels of hypocretin in the brain, and that in some individuals, 80% to 90% of hypocretin-producing neurons in the hypothalamus may be lost.