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Title: Genetic predisposition to chronic lymphocytic leukemia is mediated by a BMF super-enhancer polymorphism
Author: Kandaswamy, Radhika
Sava, Georgina P.
Speedy, Helen E.
Beà Bobet, Sílvia M.
Martín-Subero, José Ignacio
Studd, James B.
Migliorini, Gabriele
Law, Philip J.
Puente, Xose S.
Martín García, David
Salaverria Frigola, Itziar
Gutiérrez-Abril, Jesús
López-Otin, Carlos
Catovsky, Daniel
Allan, James M.
Campo Güerri, Elias
Houlston, Richard S.
Keywords: Leucèmia limfocítica crònica
Cèl·lules B
Genètica humana
Factors de transcripció
Chronic lymphocytic leukemia
B cells
Human genetics
Transcription factors
Issue Date: 11-Nov-2016
Publisher: Elsevier
Abstract: Chronic lymphocytic leukemia (CLL) is an adult B cell malignancy. Genome-wide association studies show that variation at 15q15.1 influences CLL risk. We deciphered the causal variant at 15q15.1 and the mechanism by which it influences tumorigenesis. We imputed all possible genotypes across the locus and then mapped highly associated SNPs to areas of chromatin accessibility, evolutionary conservation, and transcription factor binding. SNP rs539846 C>A, the most highly associated variant (p = 1.42 × 10(-13), odds ratio = 1.35), localizes to a super-enhancer defined by extensive histone H3 lysine 27 acetylation in intron 3 of B cell lymphoma 2 (BCL2)-modifying factor (BMF). The rs539846-A risk allele alters a conserved RELA-binding motif, disrupts RELA binding, and is associated with decreased BMF expression in CLL. These findings are consistent with rs539846 influencing CLL susceptibility through differential RELA binding, with direct modulation of BMF expression impacting on anti-apoptotic BCL2, a hallmark of oncogenic dependency in CLL.
Note: Reproducció del document publicat a:
It is part of: Stem Cell Reports, 2016, vol. 16, num. 8, p. 2061-2067
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ISSN: 2213-6711
Appears in Collections:Articles publicats en revistes (Fonaments Clínics)
Articles publicats en revistes (IDIBAPS: Institut d'investigacions Biomèdiques August Pi i Sunyer)

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