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Journal Article
Review
Leukemic stem cells and advances in hematopoietic stem cell transplantation for acute myeloid leukemia: a narrative review of clinical trials.
OBJECTIVE: The purpose of this literature review is to summarize and provide a brief overview of our current understanding of acute myeloid leukemia (AML) and the role of stem cell transplantation (SCT) in its management.
BACKGROUND: AML is a malignant hematological disorder that is characterized by the uncontrolled proliferation of myeloid blood cells. This disease has been associated with various risk factors such as ionizing radiation, cigarette smoke, pesticides/herbicides, and chemotherapy. SCT remains the most beneficial treatment for medically fit AML patients due to superior survival outcomes.
METHODS: A thorough search was conducted on PubMed, Scopus, ClinicalTrials.gov, Embase and Web of Science using related keywords. Current articles on the uses of stem cell therapy in AML patients were selected.
CONCLUSIONS: Long term exposure to ionizing radiation and other harmful substances such as benzene, cigarette smoke and chemotherapeutic drugs plays an important role in AML carcinogenesis. Mutations in certain genes (e.g., ASXL1 , RUNX1 , KIT , TP53 , BCR-ABL1 ) seem to accelerate the process as they affect normal cellular proliferation and cell death. These events may give rise to a small subpopulation of leukemic stem cells (LSC) which continuously sustain tumor development and growth. Patients who are deemed to be medically "fit" should receive an allogenic hematopoietic stem cell transplantation (allo-HSCT) due to improved overall survival (OS) (~50%) and decreased relapsed risk (32% vs. 59%). Several studies have revealed that the medically "unfit" may benefit from more conventional agents such as azacytidine, decitabine, venetoclax or sorafenib.
BACKGROUND: AML is a malignant hematological disorder that is characterized by the uncontrolled proliferation of myeloid blood cells. This disease has been associated with various risk factors such as ionizing radiation, cigarette smoke, pesticides/herbicides, and chemotherapy. SCT remains the most beneficial treatment for medically fit AML patients due to superior survival outcomes.
METHODS: A thorough search was conducted on PubMed, Scopus, ClinicalTrials.gov, Embase and Web of Science using related keywords. Current articles on the uses of stem cell therapy in AML patients were selected.
CONCLUSIONS: Long term exposure to ionizing radiation and other harmful substances such as benzene, cigarette smoke and chemotherapeutic drugs plays an important role in AML carcinogenesis. Mutations in certain genes (e.g., ASXL1 , RUNX1 , KIT , TP53 , BCR-ABL1 ) seem to accelerate the process as they affect normal cellular proliferation and cell death. These events may give rise to a small subpopulation of leukemic stem cells (LSC) which continuously sustain tumor development and growth. Patients who are deemed to be medically "fit" should receive an allogenic hematopoietic stem cell transplantation (allo-HSCT) due to improved overall survival (OS) (~50%) and decreased relapsed risk (32% vs. 59%). Several studies have revealed that the medically "unfit" may benefit from more conventional agents such as azacytidine, decitabine, venetoclax or sorafenib.
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