The purpose of this research study is to collect data on sickle cell disease participants from birth to end of life. With these data, researchers will better understand problems caused by sickle cell disease both in children and in adults.
1) To find out how many long-term survivors of leukemia have iron overload by using MRI testing. 2) To study how the number of red blood cell transfusions you received determines whether you have iron overload. 3) To explore how your age at the time of cancer therapy, the length of time from therapy, and gender affects whether you develop iron overload. 4) To find out if iron overload is causing problems with your organs.
