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Childhood leukemia is the most common childhood cancer, accounting for 29% of cancers in children aged 0–14 in 2018. [1] There are multiple forms of leukemia that occur in children, the most common being acute lymphoblastic leukemia (ALL) followed by acute myeloid leukemia (AML). [2]
The underlying pathophysiology of acute myeloid leukemia consist of maturational arrest of the bone marrow cell during the early stages of development. A myeloblast is an immature precursor cell that will change into a monocyte, healthy white blood cell. In AML, Myeloblast do not mature but grow and multiply with regulation.
Acute monocytic leukemia (AMoL, or AML-M5) [2] is a type of acute myeloid leukemia. In AML-M5 >80% of the leukemic cells are of monocytic lineage. [3] This cancer is characterized by a dominance of monocytes in the bone marrow. There is an overproduction of monocytes that the body does not need in the periphery.
Acute myeloid leukemia (AML) is a cancer of the myeloid line of blood cells, characterized by the rapid growth of abnormal cells that build up in the bone marrow and blood and interfere with normal blood cell production. [1] Symptoms may include feeling tired, shortness of breath, easy bruising and bleeding, and increased risk of infection. [1]
While most cases of ALL occur in children, 80% of deaths from ALL occur in adults. [17] Chronic lymphocytic leukemia (CLL) most often affects adults over the age of 55. It sometimes occurs in younger adults, but it almost never affects children. Two-thirds of affected people are men. The five-year survival rate is 85%. [18]
BAL is hard to treat. Usually the chemotherapy is chosen according to the morphology of the blast (ALL or AML). A blood-forming stem-cell transplantation is highly recommended. About 5% of acute leukaemia cases are BAL. BAL can occur in all ages of people but occurs more in adults than in children. [5]
This is the most common type of cancer during childhood, and acute lymphoblastic leukemia (ALL) is most common in children. ALL usually develops in children between the ages of 1 and 10 (it could occur at any age). This type of cancer is more prevalent in males and white people. [13] Signs & Symptoms:
Acute myeloid leukemia is a very heterogeneous disease, composed of a variety of translocations and mutations. However, one tenth of all acute myeloid leukemia cases diagnosed have the AML1-ETO fusion oncoprotein due to the t(8;21) translocation. AML1 or RUNX1 is a DNA-binding transcription factor located at the 21q22.
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