ovalocytic anaemia BrE
ovalocytic anemia AmE
ovalocytosis

EL4: Southeast Asian ovalocytosis is associated with the Band 3 protein.

There is a 10% increase in Fy expression in Southeast Asian ovalocytosis erythocytes.

This is reduced in Southeast Asian ovalocytosis a disease of erythrocytes due to a mutation in band 3.

There are three major forms of hereditary elliptocytosis: common hereditary elliptocytosis, spherocytic elliptocytosis and southeast Asian ovalocytosis.

Southeast Asian ovalocytosis and spherocytic elliptocytosis are less common subtypes predominantly affecting those of south-east Asian and European ethnic groups, respectively.

Southeast Asian ovalocytosis is a form of hereditary elliptocytosis common in some communities in Malaysia and Papua New Guinea, as it confers some resistance to cerebral Falciparum Malaria.

Hereditary elliptocytosis, also known as ovalocytosis, is an inherited blood disorder in which an abnormally large number of the patient's erythrocytes (i.e. red blood cells) are elliptical rather than the typical biconcave disc shape.

There is also some evidence of bipotential stem cells, called hepatic oval cells or ovalocytes (not to be confused with oval red blood cells of ovalocytosis), which are thought to reside in the canals of Hering.

In most populations ovalocytosis is rare, but South-East Asian ovalocytosis (SAO) occurs in as many as 15% of the indigenous people of Malaysia and of Papua New Guinea.