Children's Hospital Medical Center, Cincinnati
The main reason for this research study is to further understand how some red blood cells are formed incorrectly or they have an abnormal metabolism in a way that they break easier in the circulation or during their passage through the spleen. Participants and/or family members diagnosed with non-immune hemolytic anemia due to a genetic disorder, such as, hemoglobin disorder, erythrocyte membrane skeleton disorders (e.g. spherocytosis, elliptocytosis, or stomatocytosis) or hydration defect (e.g. xerocytosis, overhydrocytosis) or red blood cell (RBC) enzyme disorders, or with a congenital dyserythropoietic anemia (CDA) will be asked to participate.
The purpose of this study is to explore for known or yet unknown genetic mutations causative for non-immune hemolysis and/or anemia, in patients with hemoglobin disorders, membrane skeleton defects (a group of diseases including hereditary spherocytosis, hereditary elliptocytosis and pyropoikilocytosis, and hereditary stomatocytosis syndromes), RBC enzymopathies (most common of them being glucose-6-phosphate dehydrogenase (G6PD) and pyruvate kinase deficiency), and congenital dyserythropoietic anemias. The goal is to optimize genetic diagnosis for patients with non-immune congenital hemolytic…
Inclusion Criteria: 1. Patients who have been diagnosed, by medical history and review of the laboratory data obtained for clinical care, including CBC/reticulocyte count and review of the blood smear, with a hereditary hemolytic anemia, where the genetic etiology is challenging to be identified. 2. Parents and/or grandparents of children that have the above diagnosis. The parents and/or grandparents may or may not have non-immune hemolytic anemia (these will serve as positive or negative inherent controls) Exclusion: 1\) Patients with anemias known to be acquired and not associated with a…
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