Variants in ELL2 influencing immunoglobulin levels associate with multiple myeloma

Bhairavi Swaminathan, Gudmar Thorleifsson, Magnus Jöud, Mina Ali, Ellinor Johnsson, Ram Ajore, Patrick Sulem, Britt Marie Halvarsson, Gudmundur Eyjolfsson, Vilhelmina Haraldsdottir, Christina Hultman, Erik Ingelsson, Sigurdur Y. Kristinsson, Anna K. Kähler, Stig Lenhoff, Gisli Masson, Ulf Henrik Mellqvist, Robert Månsson, Sven Nelander, Isleifur OlafssonOlof Sigurdardottir, Hlif Steingrimsdóttir, Annette Vangsted, Ulla Vogel, Anders Waage, Hareth Nahi, Daniel F. Gudbjartsson, Thorunn Rafnar, Ingemar Turesson, Urban Gullberg, Kári Stefánsson, Markus Hansson, Unnur Thorsteinsdóttir*, Björn Nilsson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)

Abstract

Multiple myeloma (MM) is characterized by an uninhibited, clonal growth of plasma cells. While first-degree relatives of patients with MM show an increased risk of MM, the genetic basis of inherited MM susceptibility is incompletely understood. Here we report a genomewide association study in the Nordic region identifying a novel MM risk locus at ELL2 (rs56219066T; odds ratio (OR)=1.25; P=9.6×10-10). This gene encodes a stoichiometrically limiting component of the super-elongation complex that drives secretory-specific immunoglobulin mRNA production and transcriptional regulation in plasma cells.We find that the MM risk allele harbours a Thr298Ala missense variant in an ELL2 domain required for transcription elongation. Consistent with a hypomorphic effect, we find that the MM risk allele also associates with reduced levels of immunoglobulin A (IgA) and G (IgG) in healthy subjects (P=8.6×10-9 and P=6.4×10-3, respectively) and, potentially, with an increased risk of bacterial meningitis (OR=1.30; P=0.0024).

Original languageEnglish
Article number7213
JournalNature Communications
Volume6
DOIs
Publication statusPublished - 26 May 2015

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