Abnormalities of erythrocyte glycoconjugates

are identical in two families with congenital dyserythropoietic anemia type II with different chromosomal localizations of the disease gene We analyzed erythrocyte glycoconjugates in two families with congenital dyserythropoietic anemia type II (CDA-II): family 2 with the typical localiza-tion of the disease gene to chromosome 20q11.2 and family 1 in which this localization was exclud-ed. Despite the different genetics, the erythrocyte glycoconjugate abnormalities in the two families were identical suggesting a complex inheritance of CDA-II. We also found that erythrocyte anion exchanger 1 protein is decreased in CDA-II homozygotes and obligate carriers alike. Haematologica 2007; 92:427-2