Relapsed/Refractory CD19+ Acute Lymphoblastic Leukemia and Lymphoma
This condition refers to a type of blood cancer where the body produces too many immature white blood cells (acute lymphoblastic leukemia) that do not function properly, and it can also involve aggressive lymphomas like diffuse large B cell lymphoma. It is termed 'relapsed' when the cancer returns after treatment and 'refractory' when it does not respond to treatment.