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Title

Leukemia-associated somatic mutations drive distinct patterns of age-related clonal hemopoiesis

AuthorsMcKerrell, Thomas; Moreno, Thaidy; Varela, María J.; Vassiliou, George S.
Issue Date2015
PublisherCell Press
Elsevier
CitationCell Reports 10(8): 1239-1245 (2015)
AbstractClonal hemopoiesis driven by leukemia-associated gene mutations can occur without evidence of a blood disorder. To investigate this phenomenon, we interrogated 15 mutation hot spots in blood DNA from 4,219 individuals using ultra-deep sequencing. Using only the hot spots studied, we identified clonal hemopoiesis in 0.8% of individuals under 60, rising to 19.5% of those ≥90 years, thus predicting that clonal hemopoiesis is much more prevalent than previously realized. DNMT3A-R882 mutations were most common and, although their prevalence increased with age, were found in individuals as young as 25 years. By contrast, mutations affecting spliceosome genes SF3B1 and SRSF2, closely associated with the myelodysplastic syndromes, were identified only in those aged 70 years, with several individuals harboring more than one such mutation. This indicates that spliceosome gene mutations drive clonal expansion under selection pressures particular to the aging hemopoietic system and explains the high incidence of clonal disorders associated with these mutations in advanced old age.
DescriptionOpen Access funded by Wellcome Trust. Under a Creative Commons license.-- Understanding Society Scientific Group: et al.
Publisher version (URL)http://dx.doi.org/10.1016/j.celrep.2015.02.005
URIhttp://hdl.handle.net/10261/130587
DOIhttp://dx.doi.org/10.1016/j.celrep.2015.02.005
Identifiersdoi: 10.1016/j.celrep.2015.02.005
issn: 2211-1247
Appears in Collections:(IBBTEC) Artículos
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