Genetic and regulatory mechanism of susceptibility to high-hyperdiploid acute lymphoblastic leukaemia at 10p21.2.
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ICR Authors
Authors
Studd, JB
Vijayakrishnan, J
Yang, M
Migliorini, G
Paulsson, K
Houlston, RS
Vijayakrishnan, J
Yang, M
Migliorini, G
Paulsson, K
Houlston, RS
Document Type
Journal Article
Date
2017-03-03
Date Accepted
2017-01-17
Abstract
Despite high-hyperdiploid acute lymphoblastic leukaemia (HD-ALL) being the most common subgroup of paediatric ALL, its aetiology remains unknown. Genome-wide association studies have demonstrated association at 10q21.2. Here, we sought to determine how this region influences HD-ALL risk. We impute genotypes across the locus, finding the single nucleotide polymorphism rs7090445 highly associated with HD-ALL (P=1.54 × 10-38), and residing in a predicted enhancer element. We show this region physically interacts with the transcription start site of ARID5B, that alleles of rs7090445 have differential enhancer activity and influence RUNX3 binding. RUNX3 knock-down reduces ARID5B expression and rs7090445 enhancer activity. Individuals carrying the rs7090445-C risk allele also have reduced ARID5B expression. Finally, the rs7090445-C risk allele is preferentially retained in HD-ALL blasts consistent with inherited genetic variation contributing to arrest of normal lymphocyte development, facilitating leukaemic clonal expansion. These data provide evidence for a biological mechanism underlying hereditary risk of HD-ALL at 10q21.2.
Citation
Nature communications, 2017, 8 pp. 14616 - ?
Source Title
Publisher
NATURE PORTFOLIO
ISSN
2041-1723
eISSN
2041-1723
Collections
Research Team
Cancer Genomics