TY  - JOUR
A1  - Holstege, Henne
A1  - Pfeiffer, Wayne
A1  - Sie, Daoud
A1  - Hulsman, Marc
A1  - Nicholas, Thomas J.
A1  - Lee, Clarence C.
A1  - Ross, Tristen
A1  - Lin, Jue
A1  - Miller, Mark A.
A1  - Ylstra, Bauke
A1  - Meijers-Heijboer, Hanne
A1  - Brugman, Martijn H.
A1  - Staal, Frank J.T.
A1  - Holstege, Gert
A1  - Reinders, Marcel J.T.
A1  - Harkins, Timothy T.
A1  - Levy, Samuel
A1  - Sistermans, Erik A.
T1  - Somatic mutations found in the healthy blood compartment of a 115-yr-old woman demonstrate oligoclonal hematopoiesis
Y1  - 2014/05/01 
JF  - Genome Research 
JO  - Genome Research 
SP  - 733 
EP  - 742 
DO  - 10.1101/gr.162131.113 
VL  - 24 
IS  - 5 
UR  - http://genome.cshlp.org/content/24/5/733.abstract 
N2  - The somatic mutation burden in healthy white blood cells (WBCs) is not well known. Based on deep whole-genome sequencing, we estimate that approximately 450 somatic mutations accumulated in the nonrepetitive genome within the healthy blood compartment of a 115-yr-old woman. The detected mutations appear to have been harmless passenger mutations: They were enriched in noncoding, AT-rich regions that are not evolutionarily conserved, and they were depleted for genomic elements where mutations might have favorable or adverse effects on cellular fitness, such as regions with actively transcribed genes. The distribution of variant allele frequencies of these mutations suggests that the majority of the peripheral white blood cells were offspring of two related hematopoietic stem cell (HSC) clones. Moreover, telomere lengths of the WBCs were significantly shorter than telomere lengths from other tissues. Together, this suggests that the finite lifespan of HSCs, rather than somatic mutation effects, may lead to hematopoietic clonal evolution at extreme ages. 
ER  -