Nature Communications (Aug 2024)

Deciphering the genetics and mechanisms of predisposition to multiple myeloma

  • Molly Went,
  • Laura Duran-Lozano,
  • Gisli H. Halldorsson,
  • Andrea Gunnell,
  • Nerea Ugidos-Damboriena,
  • Philip Law,
  • Ludvig Ekdahl,
  • Amit Sud,
  • Gudmar Thorleifsson,
  • Malte Thodberg,
  • Thorunn Olafsdottir,
  • Antton Lamarca-Arrizabalaga,
  • Caterina Cafaro,
  • Abhishek Niroula,
  • Ram Ajore,
  • Aitzkoa Lopez de Lapuente Portilla,
  • Zain Ali,
  • Maroulio Pertesi,
  • Hartmut Goldschmidt,
  • Lilja Stefansdottir,
  • Sigurdur Y. Kristinsson,
  • Simon N. Stacey,
  • Thorvardur J. Love,
  • Saemundur Rognvaldsson,
  • Roman Hajek,
  • Pavel Vodicka,
  • Ulrika Pettersson-Kymmer,
  • Florentin Späth,
  • Carolina Schinke,
  • Frits Van Rhee,
  • Patrick Sulem,
  • Egil Ferkingstad,
  • Grimur Hjorleifsson Eldjarn,
  • Ulf-Henrik Mellqvist,
  • Ingileif Jonsdottir,
  • Gareth Morgan,
  • Pieter Sonneveld,
  • Anders Waage,
  • Niels Weinhold,
  • Hauke Thomsen,
  • Asta Försti,
  • Markus Hansson,
  • Annette Juul-Vangsted,
  • Unnur Thorsteinsdottir,
  • Kari Hemminki,
  • Martin Kaiser,
  • Thorunn Rafnar,
  • Kari Stefansson,
  • Richard Houlston,
  • Björn Nilsson

DOI
https://doi.org/10.1038/s41467-024-50932-7
Journal volume & issue
Vol. 15, no. 1
pp. 1 – 15

Abstract

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Abstract Multiple myeloma (MM) is an incurable malignancy of plasma cells. Epidemiological studies indicate a substantial heritable component, but the underlying mechanisms remain unclear. Here, in a genome-wide association study totaling 10,906 cases and 366,221 controls, we identify 35 MM risk loci, 12 of which are novel. Through functional fine-mapping and Mendelian randomization, we uncover two causal mechanisms for inherited MM risk: longer telomeres; and elevated levels of B-cell maturation antigen (BCMA) and interleukin-5 receptor alpha (IL5RA) in plasma. The largest increase in BCMA and IL5RA levels is mediated by the risk variant rs34562254-A at TNFRSF13B. While individuals with loss-of-function variants in TNFRSF13B develop B-cell immunodeficiency, rs34562254-A exerts a gain-of-function effect, increasing MM risk through amplified B-cell responses. Our results represent an analysis of genetic MM predisposition, highlighting causal mechanisms contributing to MM development.