"Rare DiseaseSYNCI" . . "Rare Disorder"^^ . "C4873"^^ . "There are more than 5,000 rare disorders that, taken together, affect approximately 20 million Americans. One in every 12 individuals in this country has received a diagnosis of a rare disease."^^ . "Rare Disorder"^^ . . . "Rare_Disorder"^^ . "Rare DisorderPTNCI" . "Rare DiseasesSYNCI" . "Disease or Syndrome"^^ . "A non-malignant disease that affects fewer than 200,000 people in the United States.NCIfrom National Organization for Rare Disorders" . "C0678236"^^ .