Clonal hematopoiesis and bone marrow failure syndromes. 2021

Sergiu Pasca, and Lukasz P Gondek
Department of Oncology, Division of Hematological Malignancies, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, MD, USA.

Bone marrow failure syndromes (BMF) are a group of conditions characterized by inefficient hematopoiesis frequently associated with extra-hematopoietic phenotypes and variable risk of progression to myeloid malignancies. They can be acquired or inherited and mediated by either cell extrinsic factors or cell intrinsic impairment of hematopoietic stem cell (HSC) function. The pathophysiology includes immune-mediated attack (e.g., acquired BMFs) or germline defects in DNA damage repair machinery, telomeres maintenance or ribosomes biogenesis. (e.g., inherited BMF). Clonal hematopoiesis (CH) that frequently accompanies BMF may provide a mechanism of improved HSC fitness through the evasion of extracellular pressure or somatic reversion of germline defects. The mechanism for the CH selective advantage differs depending on the condition in which it occurs. However, this adaptation mechanism, particularly when involving putative oncogenes or tumor suppressors, may lead to increased risk of myeloid malignancies. Surveillance and early detection of leukemogenic clones may lead to timely implementation of curative therapies and improved survival.

UI MeSH Term Description Entries
D006410 Hematopoiesis The development and formation of various types of BLOOD CELLS. Hematopoiesis can take place in the BONE MARROW (medullary) or outside the bone marrow (HEMATOPOIESIS, EXTRAMEDULLARY). Hematopoiesis, Medullary,Haematopoiesis,Medullary Hematopoiesis
D006412 Hematopoietic Stem Cells Progenitor cells from which all blood cells derived. They are found primarily in the bone marrow and also in small numbers in the peripheral blood. Colony-Forming Units, Hematopoietic,Progenitor Cells, Hematopoietic,Stem Cells, Hematopoietic,Hematopoietic Progenitor Cells,Cell, Hematopoietic Progenitor,Cell, Hematopoietic Stem,Cells, Hematopoietic Progenitor,Cells, Hematopoietic Stem,Colony Forming Units, Hematopoietic,Colony-Forming Unit, Hematopoietic,Hematopoietic Colony-Forming Unit,Hematopoietic Colony-Forming Units,Hematopoietic Progenitor Cell,Hematopoietic Stem Cell,Progenitor Cell, Hematopoietic,Stem Cell, Hematopoietic,Unit, Hematopoietic Colony-Forming,Units, Hematopoietic Colony-Forming
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000080983 Bone Marrow Failure Disorders Inherited or acquired diseases characterized by insufficient and/or dysplastic blood cells. Bone Marrow Failure,Bone Marrow Failure Syndrome,Bone Marrow Failure Syndromes,Failure, Bone Marrow
D000082182 Clonal Hematopoiesis Expansion of blood cells arising from mutant HEMATOPOIETIC STEM CELLS often related to aging. Mutations on epigenetic regulator genes are common in clonal hematopoiesis and may be a risk factor for HEMATOLOGIC NEOPLASMS and other cardiovascular diseases. When variant allele fraction is at least 2% and is present in the absence of severe cytopenias it is referred to as clonal hematopoiesis of indeterminate potential (CHIP). ARCH Age-related Clonal Hematopoiesis,Age-related Clonal Hematopoiesis,CCUS Clonal Cytopenia of Undetermined Significance,CHIP Clonal Hematopoiesis of Indeterminate Potential,Clonal Cytopenia of Undetermined Significance,Clonal Hematopoiesis of Indeterminate Potential,ICUS Idiopathic Cytopenias of Undetermined Significance,Idiopathic Cytopenias of Undetermined Significance,ARCH Age related Clonal Hematopoiesis,Age related Clonal Hematopoiesis,Clonal Hematopoiesis, Age-related,Hematopoiesis, Age-related Clonal,Hematopoiesis, Clonal

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