Cihan University-Erbil Scientific Journal Special Issue No.2, July 2017 195 Incidence of B-cell Leukemia Among Kurdish People in Erbil City Tanya Salam Salih Biology Department - College of Science Cihan University – Erbil Erbil, Iraq tanyasalam@ymail.com Suhaila N.R. Darogha Biology Department - College of Education University of Salahaddin Erbil-Iraq suhailanza@gmail.com Abstract This study was carried out in Nanakaly hospital for blood disease in Erbil city, during November 2013 to November 2014. The study was designed to investigate the prevalence of different types of leukemia in Erbil Province in Kurdistan Region.138 cases were studied of different types of leukemia diagnosed by peripheral blood count, peripheral blood smear examination, bone marrow aspiration and immune-phenotyping by flow cytometery. The results showed that from 138 patients, 68 (49.28%) patients suffered with B-cell lineage disorders, while 44(31.88%) patients afflicted with myloid lineage disorders fllowed by 13(9.42%) patients affected with T-cell lineage disorders. The results showed that from 68 patients, 38 (55.88%) affected with acute lymphocytic leukemia (ALL) followed by 26 (38.24%) chronic lymphocytic leukemia (CLL), 3 (4.41%) and 1 (1.47%) of patients represent hairy cell leukemia (HCL) and Burkett’s lymphoma respectively. The result indicated obvious relation between age and B-cell leukemia, BALL was most frequent in children and B-CLL related to older age. Keywords: Epidemiology of leukemia; B-cell leukemia; risk factor, Erbil Introduction Cancer can be defined as a disease in which a cell of group of abnormal cells grow uncontrollably by upregulation of the normal rules of cell division and can invade nearby tissues [1]. Cancer is set to become a major cause of sickness, morbidity and mortality in the future decades in every region of the world [2]. Today, Cancer is the leading cause of death in economically developed-countries and the second leading cause of death in developing countries [3]. DOI: 10.24086/cuesj.si.2017.n2a18