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Clonal hematopoiesis of indeterminate potential, or CHIP, is a common aging-related phenomenon in which hematopoietic stem cells (HSCs) or other early blood cell progenitors contribute to the formation of a genetically distinct subpopulation of blood cells. As the name suggests, this subpopulation in the blood is characterized by a shared unique mutation in the cells' DNA; it is thought that this subpopulation is "clonally" derived from a single founding cell and is therefore made of genetic "clones" of the founder. The establishment of a clonal population may occur when a stem or progenitor cell acquires one or more somatic mutations that give it a competitive advantage in hematopoiesis over the stem/progenitor cells without these mutations. Alternatively, clonal hematopoiesis may arise w

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  • Clonal hematopoiesis (en)
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  • Clonal hematopoiesis of indeterminate potential, or CHIP, is a common aging-related phenomenon in which hematopoietic stem cells (HSCs) or other early blood cell progenitors contribute to the formation of a genetically distinct subpopulation of blood cells. As the name suggests, this subpopulation in the blood is characterized by a shared unique mutation in the cells' DNA; it is thought that this subpopulation is "clonally" derived from a single founding cell and is therefore made of genetic "clones" of the founder. The establishment of a clonal population may occur when a stem or progenitor cell acquires one or more somatic mutations that give it a competitive advantage in hematopoiesis over the stem/progenitor cells without these mutations. Alternatively, clonal hematopoiesis may arise w (en)
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  • Clonal hematopoiesis of indeterminate potential, or CHIP, is a common aging-related phenomenon in which hematopoietic stem cells (HSCs) or other early blood cell progenitors contribute to the formation of a genetically distinct subpopulation of blood cells. As the name suggests, this subpopulation in the blood is characterized by a shared unique mutation in the cells' DNA; it is thought that this subpopulation is "clonally" derived from a single founding cell and is therefore made of genetic "clones" of the founder. The establishment of a clonal population may occur when a stem or progenitor cell acquires one or more somatic mutations that give it a competitive advantage in hematopoiesis over the stem/progenitor cells without these mutations. Alternatively, clonal hematopoiesis may arise without a driving mutation, through mechanisms such as neutral drift in the stem cell population. Clonal hematopoiesis may occur in people who are completely healthy but has also been found in people with hematologic diseases. The clonal population may vary in size depending on the person, where it can be less than 2% of the blood or, at the other end, can sometimes grow close to 100%. The incidence of clonal hematopoiesis has been found to rise dramatically with age. Recent studies have demonstrated that less than 1% of the population under age 40 but approximately 10-20% of the population over age 70 has observable clonal hematopoiesis. Having clonal hematopoiesis has been linked to a more than 10-fold increased risk of developing a blood cancer, though the overall likelihood is still low. Clonal hematopoiesis does not typically give rise to noticeable symptoms, but does lead to increased risk of cardiovascular disease. (en)
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