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Updated: Aug 10, 2025

Characterizing Mutational Load and Clonal Composition of Human Blood
Published on: July 11, 2019
Adult Low-Hypodiploid Acute Lymphoblastic Leukemia Evolves from TP53-Mutated Clonal Hematopoiesis
Ryunosuke Saiki1,2, Seishi Ogawa1,2
1Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
Summary:
Low-hypodiploid acute lymphoblastic leukemia (LH-ALL) in both children and adults is characterized by biallelic TP53 alterations in virtually all cases. However, in contrast to a common germline origin of the TP53 mutations in pediatric cases, those in adult cases are mostly somatic and are derived from age-related clonal hematopoiesis (ARCH), highlighting the role of TP53-mutant ARCH in the development not only of myeloid leukemogenesis but also of LH-ALL in aged populations. See related article by Kim et al., p. 134 (4).
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