Timing the initiation of multiple myeloma

Even H. Rustad, Venkata Yellapantula, Daniel Leongamornlert, Niccolò Bolli, Guy Ledergor, Ferran Nadeu, Nicos Angelopoulos, Kevin J. Dawson, Thomas J. Mitchell, Robert J. Osborne, Bachisio Ziccheddu, Cristiana Carniti, Vittorio Montefusco, Paolo Corradini, Kenneth C. Anderson, Philippe Moreau, Elli Papaemmanuil, Ludmil B. Alexandrov, Xose S. Puente, Elias CampoReiner Siebert, Herve Avet-Loiseau, Ola Landgren, Nikhil Munshi, Peter J. Campbell, Francesco Maura

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

The evolution and progression of multiple myeloma and its precursors over time is poorly understood. Here, we investigate the landscape and timing of mutational processes shaping multiple myeloma evolution in a large cohort of 89 whole genomes and 973 exomes. We identify eight processes, including a mutational signature caused by exposure to melphalan. Reconstructing the chronological activity of each mutational signature, we estimate that the initial transformation of a germinal center B-cell usually occurred during the first 2nd-3rd decades of life. We define four main patterns of activation-induced deaminase (AID) and apolipoprotein B mRNA editing catalytic polypeptide-like (APOBEC) mutagenesis over time, including a subset of patients with evidence of prolonged AID activity during the pre-malignant phase, indicating antigen-responsiveness and germinal center reentry. Our findings provide a framework to study the etiology of multiple myeloma and explore strategies for prevention and early detection.

Original languageEnglish (US)
Article number1917
JournalNature communications
Volume11
Issue number1
DOIs
StatePublished - Dec 1 2020
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

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