A new congenital dyserythropoietic anaemia.

A new dominantly inherited dyserythropoietic anaemia is described. In the bone marrow, many of the nonspecific morphological characteristics described in congenital dyserythropoietic anaemias were seen; however, dysmorphic cells were rare. The acidified serum test was positive with one out of 17 sera tested; the negative sera included two that had haemolysed HEMPAS erythrocytes in the acid Ham test. Anti-i-agglutination was negative. No aberrations of red cell membrane protein glycosylation were observed. Serum cholesterol was low. Bilirubin conjugation was deficient but icterus was resolved by treatment with phenobarbital.