Accelerated phase CML: the second phase of CML; leukemic cells grow more quickly and symptoms such as poor appetite, fever, and weight loss may occur
Anemia: see Red blood cells
BCR-ABL: an abnormal protein that causes out-of-control production of CML cells
Blast cells: immature white blood cells found in abnormally large numbers in CML patients
Blast phase CML: the final and most serious phase of CML; symptoms become more severe and are more difficult to treat
Bone marrow: the soft tissue inside bones that produces blood cells
Chromosome: a part of a cell that contains genes, the basic units that carry hereditary information. An individual chromosome can contain hundreds or thousands of genes
Chronic myeloid leukemia (CML): a slow-developing cancer of the blood in which the body produces uncontrolled numbers of abnormal blood cells
Chronic phase CML: the first phase of CML; it can last for months or years; most people are diagnosed with CML during this phase
Complete cytogenetic response (CCyR): when cells carrying the Philadelphia chromosome are undetectable
Confirmed CCyR (cCCyR): when cells carrying the Philadelphia chromosome are undetectable based on 2 consecutive measurements that are taken at least 28 days apart
Hematologic test: test that can detect the number of white blood cells, red blood cells, and platelets in the blood
Intolerance: when a person is unable to tolerate side effects caused by medication
Leukemia: several acute (progresses quickly) or chronic (takes a longer time to progress) diseases of the blood and bone marrow; characterized by an abnormal increase in blood cells
Major cytogenetic response (MCyR): when the percentage of cells carrying the Philadelphia chromosome is 0% to 35% (this combines both complete [0%] and partial [1% to 34%] responses)
Major molecular response (MMR): when testing reveals that the extent of the BCR-ABL found in the patient's blood is very small.
Musculoskeletal: referring to the muscles, tendons, ligaments, joints, or bones.
Neutropenia: see White blood cells
Philadelphia chromosome (or Ph chromosome): the chromosome abnormality that causes CML; pieces from 2 different chromosomes break off and fuse together to create this new abnormal chromosome
Platelets: blood cells that help stop bleeding. When platelet levels are lower than normal, it is called thrombocytopenia
Red blood cells: blood cells that carry oxygen to all parts of the body. When red blood cell levels are lower than normal, it is called anemia
Resistance: when cells are able to survive and grow, even when they are exposed to drugs that would normally kill them or limit their growth
Side effects: the undesired negative effects of a drug
Signs: abnormalities in the body that others can see
Symptoms: a signal of illness or disease in the body that you can feel or notice, but others may not easily see
Thrombocytopenia: see Platelets
White blood cells: blood cells that help fight infections. When the level of a certain type of white blood cell is lower than normal, it is called neutropenia