<unk>  is the heritable hemolytic disorder, affecting 1 in 2,000 people of Northern European ancestry. According to Harrison's Principles of Internal Medicine, the frequency is at least 1 in 5,000 within the United States of America. While<unk>  is most commonly (though not exclusively) found in Northern European and Japanese families, an estimated 25% of cases are due to spontaneous mutations.
Hereditary spherocytosis
Glucose-6-phosphate dehydrogenase deficiency
Paroxysmal nocturnal hemoglobinuria
Paroxysmal cold hemoglobinuria
Hereditary elliptocytosis
Congenital hemolytic anemia
Mixed autoimmune hemolytic anemia
Alpha-thalassemia