The origin of post-transplant clonal hematopoiesis can be traced to prenatal development.

Clonal hematopoiesis (CH), a prevalent and premalignant state in the elderly, can occur in young individuals under selective pressures such as hematopoietic cell transplantation (HCT). However, the origin of CH and mutational processes underlying CH driver mutations in young individuals remain unclear. Here, we used genome-wide somatic mutation profiles to retrospectively trace the origin of DNMT3A-mutant CH in three individuals, 14-41 years after childhood HCT.

Type: Whole Genome Sequencing
Archiver: European Genome-Phenome Archive (EGA)

1 Dataset 1 Publication

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Dataset ID	Description	Technology	Samples
EGAD50000001347	This dataset contains BAM files of whole-genome sequencing data of single human HSPCs after colony expansion, for three individuals who harbor a DNMT3A mutant clonal hematopoiesis clone in their blood system after hematopoietic cell transplantation. 29 samples are present in this dataset; 10 samples for LTHIT005, 10 samples for LTHIT131, and 9 samples for LTHIT069. In the sample name, samples are annotated for being DNMT3A wildtype (wt) or mutant (mut), except for LTHIT069 (wt samples: F13, H4, K2, L16, N12, mut samples: C8, E10, L9, N5). Whole-genome sequencing was performed after standard Illumina WGS library preparation and sequenced on a Novaseq 6000 using 150 bp paired-end sequencing. The sequencing depth is 15x genome coverage, or 50Gbases per sample.	Illumina NovaSeq 6000	29

Publications	Citations
Posttransplantation clonal dynamics of hematopoietic stem cells carrying prenatal and early-life <i>DNMT3A</i> mutations. Derks LLM, Müskens KF, van Roosmalen MJ, de Graaf AO, Epskamp N, Trabut L, Hagelaar R, Jansen JH, Lindemans CA, van Bergen MGJM, van Boxtel R, Belderbos ME. Hemasphere 9: 2025 e70262	0