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Cell-free DNA genomic and fragmentomic features for early outcome prediction in large B cell lymphoma

  • Steven Wang
  • , Parisa Mapar
  • , Norbert Moldovan
  • , Ymke van der Pol
  • , Aram Safrastyan
  • , Erik van Werkhoven
  • , Normastuti Adhini Tantyo
  • , Bart Snieder
  • , André F Do Brito Valente
  • , A Vera de Jonge
  • , Avinash Dinmohamed
  • , Esther E E Drees
  • , Margaretha G M Roemer
  • , Bauke Ylstra
  • , Clara P W Klerk
  • , Leonie Strobbe
  • , Yorick Sandberg
  • , Rinske S Boersma
  • , Harry Koene
  • , Hans Pruijt
  • Koen de Heer, Rozemarijn van Rijn, Yavuz M Bilgin, Eva de Jongh, Marcel Nijland, Marjolein van der Poel, Ad Koster, Laurens Nieuwenhuizen, Rob Fijnheer, Aart Beeker, Rogier Mous, Vibeke K J Vergote, Joost S P Vermaat, D Michiel Pegtel, Martine E D Chamuleau, Florent Mouliere*
*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

Curative-intent immunochemotherapy fails in ∼30% of patients with large B cell lymphoma (LBCL), yet no validated molecular tool enables early identification of high-risk individuals to guide treatment intensification. Using shallow whole-genome sequencing (sWGS) of plasma cell-free DNA from 190 LBCL patients, we develop and validate the ACT score (aberrations, composition of fragments, and terminal motif analyses), a composite classifier integrating genomic and fragmentomic features from a single post-cycle-1 sample. ACT-positive patients have worse 2-year outcomes versus ACT-negative patients: time-to-progression 29% vs. 83% (hazard ratio [HR]: 4.4, 95% confidence interval [CI]: 1.9-10.0; p = 1.5 × 10-4) and overall survival 47% vs. 93% (HR: 8.7, 95% CI: 3.0-25.4; p = 1.8 × 10-6). The ACT score is independently prognostic of the International Prognostic Index, and their combination identifies the highest risk patients. Unlike mutation-based approaches, this assay requires neither tumor tissue, germline control, nor a baseline plasma sample. Built on open-source tools and sWGS, the ACT score offers a feasible, scalable strategy for early risk stratification in aggressive LBCL.

Original languageEnglish
Article number103006
JournalCell reports. Medicine
Volume7
Issue number9
Early online date24 Aug 2026
DOIs
Publication statusPublished - 15 Sept 2026

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