GATA1-Related X-Linked Cytopenia (MONDO_0100089) is x-Linked cytopenia characterized by anemia and/or thrombocytopenia. Additional features including platelet dysfunction, dyserythropoesis, mild beta-thalassemia, neutropenia, or congenital erythropoetic porphyria may be present. These GATA1 variants are germline as opposed to GATA1 variants seen in leukemia. Also known as: GATA1-Related Cytopenia.