TY - JOUR TI - ERYTHROCYTOSIS DUE TO A COMBINATION OF THE HIGH OXYGEN AFFINITY HEMOGLOBIN VARIANT, Hb OLYMPIA [beta 20(B2)VAL -> MET] WITH beta- AND alpha-THALASSEMIA MUTATIONS: FIRST CASE IN THE LITERATURE AU - Kalotychou, Vassiliki AU - Tzanetea, Revekka AU - Konstantopoulos, Kostas AU - and Papassotiriou, Ioannis AU - Rombos, Ioannis JO - Hemoglobin: Interrnational Journal for Hemoglobin Research PY - 2010 VL - 34 TODO - 4 SP - 383-388 PB - Taylor and Francis Inc. SN - 0363-0269 TODO - 10.3109/03630269.2010.486331 TODO - Hb Olympia; Erythrocytosis; beta(0)-Thalassemia (beta(0)-thal); alpha(0)-Thalassemia (alpha(0)-thal) TODO - A 40-year-old Greek male was admitted to the hospital because of acute respiratory infection. The patient has been undergoing regular venesection for erythrocytosis for 20 years; he has also been taking oral anticoagulants for thrombosis for 15 years. The molecular defect for erythrocytosis was detected together with the rare Hb Olympia (HBB:c.61G>A) variant. This hemoglobin (Hb) variant was found in combination with two thalassemia-type globin gene defects, namely beta(0)-thalassemia (beta(0)-thal), HBB:c.118C>T and alpha(0)-thal (–(MED)). This combination of three molecular defects is the first such case reported in the literature. ER -