Genetic and regulatory mechanism of susceptibility to high-hyperdiploid acute lymphoblastic leukaemia at 10p21.2.
James B StuddJayaram VijayakrishnanMinjun YangGabriele MiglioriniKajsa PaulssonRichard S HoulstonPublished in: Nature communications (2017)
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.
Keyphrases
- transcription factor
- binding protein
- poor prognosis
- liver failure
- respiratory failure
- genome wide association
- emergency department
- intensive care unit
- dna binding
- drug induced
- genome wide
- electronic health record
- cell proliferation
- clinical trial
- peripheral blood
- study protocol
- genome wide association study
- double blind