Chronic Myeloid Leukemia CML Overview Causes Risks Symptoms Diagnosis Phases amp Treatments

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Chronic Myeloid Leukemia (CML) Overview, Causes, Risks Factors, Symptoms, Diagnosis, Phases, Treatments • 00:00 - Leukemia Overview • 00:53 - CML Overview • 01:33 - Causes of CML • 02:21- Who is at Risk • 02:41- Symptoms • 03:04- Diagnosis • 03:30- Phases • 04:30- Treatments • -- • Leukemia is a term for cancers of the blood cells. Leukemia starts in blood-forming tissues such as the bone marrow. Your bone marrow makes the cells which will develop into white blood cells, red blood cells, and platelets. Each type of cell has a different job: • White blood cells help your body fight infection • Red blood cells deliver oxygen from your lungs to your tissues and organs • Platelets help form clots to stop bleeding • When you have leukemia, your bone marrow makes large numbers of abnormal cells. This problem most often happens with white blood cells. These abnormal cells build up in your bone marrow and blood. They crowd out the healthy blood cells and make it hard for your cells and blood to do their work. • What is chronic myeloid leukemia (CML)? • Chronic myeloid leukemia (CML) is a type of chronic leukemia. Chronic means that the leukemia usually gets worse slowly. In CML, the bone marrow makes abnormal granulocytes (a type of white blood cell). These abnormal cells are also called blasts. When the abnormal cells crowd out the healthy cells, it can lead to infection, anemia, and easy bleeding. The abnormal cells can also spread outside the blood to other parts of the body. • CML usually occurs in adults during or after middle age. It is rare in children. • What causes chronic myeloid leukemia (CML)? • Most people with CML have a genetic change called the Philadelphia chromosome. It's called that because researchers in Philadelphia discovered it. People normally have 23 pairs of chromosomes in each cell. These chromosomes contain your DNA (genetic material). In CML, part of the DNA from one chromosome moves to another chromosome. It combines with some DNA there, which creates a new gene called BCR-ABL. This gene causes your bone marrow to make an abnormal protein. This protein allows the leukemia cells to grow out of control. • The Philadelphia chromosome isn't passed from parent to child. It happens during your lifetime. The cause is unknown. • Who is at risk for chronic myeloid leukemia (CML)? • It is hard to predict who will get CML. There are a few factors that could raise your risk: • Age - your risk goes up as you get older • Gender - CML is slightly more common in men • Exposure to high-dose radiation • What are the symptoms of chronic myeloid leukemia (CML)? • Sometimes CML does not cause symptoms. If you do have symptoms, they can include: • Feeling very tired • Weight loss for no known reason • Drenching night sweats • Fever • Pain or a feeling of fullness below the ribs on the left side • How is chronic myeloid leukemia (CML) diagnosed? • Your health care provider may use many tools to diagnose CML: • A physical exam • A medical history • Blood tests • Bone marrow tests • Genetic tests • If you are diagnosed with CML, you may have additional tests such as imaging tests to see whether the cancer has spread. • What are the phases of chronic myeloid leukemia (CML)? • CML has three phases. The phases are based on how much the CML has grown or spread: • Chronic phase, where less than 10% of cells in the blood and bone marrow are blast cells (leukemia cells). Most people are diagnosed in this phase, and many do not have symptoms. Standard treatment usually helps in this phase. • Accelerated phase, 10% to 19% of the cells in the blood and bone marrow are blast cells. In this phase, people often have symptoms and standard treatment may not be as effective as in the chronic phase. • Blastic phase, where 20% or more of the cells in the blood or bone marrow are blast cells. The blast cells have spread to other tissues and organs. If you have tiredness, fever, and an enlarged spleen during the blastic phase, it is called a blast crisis. This phase is harder to treat. • What are the treatments for chronic myeloid leukemia (CML)? • There are several different treatments for CML: • Targeted therapy • Chemotherapy • Immunotherapy • High-dose chemotherapy with stem cell transplant • Donor lymphocyte infusion (DLI). DLI is a treatment that may be used after a stem cell transplant. It involves giving you an infusion (into your bloodstream) of healthy lymphocytes from the stem cell transplant donor. Lymphocytes are a type of white blood cell. These donor lymphocytes may kill the remaining cancer cells. • Surgery to remove the spleen (splenectomy) • Which treatments you get will depend on which phase you are in, your age, your overall health, and other factors. When the signs and symptoms of CML are reduced or have disappeared, it is called remission. The CML may come back after remission, and you may need more treatment. • NIH: National Cancer Institute

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