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Multicenter Study
. 2018 Dec 21;9(1):1.
doi: 10.1038/s41408-018-0162-8.

Genetic correlation between multiple myeloma and chronic lymphocytic leukaemia provides evidence for shared aetiology

Affiliations
Multicenter Study

Genetic correlation between multiple myeloma and chronic lymphocytic leukaemia provides evidence for shared aetiology

Molly Went et al. Blood Cancer J. .

Abstract

The clustering of different types of B-cell malignancies in families raises the possibility of shared aetiology. To examine this, we performed cross-trait linkage disequilibrium (LD)-score regression of multiple myeloma (MM) and chronic lymphocytic leukaemia (CLL) genome-wide association study (GWAS) data sets, totalling 11,734 cases and 29,468 controls. A significant genetic correlation between these two B-cell malignancies was shown (Rg = 0.4, P = 0.0046). Furthermore, four of the 45 known CLL risk loci were shown to associate with MM risk and five of the 23 known MM risk loci associate with CLL risk. By integrating eQTL, Hi-C and ChIP-seq data, we show that these pleiotropic risk loci are enriched for B-cell regulatory elements and implicate B-cell developmental genes. These data identify shared biological pathways influencing the development of CLL and, MM and further our understanding of the aetiological basis of these B-cell malignancies.

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Conflict of interest statement

The authors declare that they have no conflict of interest.

Figures

Fig. 1
Fig. 1
Schematic outlining the processing of data sets used in the genetic correlation
Fig. 2
Fig. 2. Overlap of loci in multiple myeloma and chronic lymphocytic leukaemia.
*correlated variants at 3q26.2 had been previously published as genome wide significant in each data set prior to this analysis

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