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Genome-wide cell-free DNA fragmentation in patients with cancer

Publikation: Bidrag til tidsskriftLetterForskningpeer review

DOI

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  • Stephen Cristiano
  • Alessandro Leal
  • Jillian Phallen
  • Jacob Fiksel
  • Vilmos Adleff
  • Daniel C Bruhm
  • Sarah Østrup Jensen
  • Jamie E Medina
  • Carolyn Hruban
  • James R White
  • Doreen N Palsgrove
  • Noushin Niknafs
  • Valsamo Anagnostou
  • Patrick Forde
  • Jarushka Naidoo
  • Kristen Marrone
  • Julie Brahmer
  • Brian D Woodward
  • Hatim Husain
  • Karlijn L van Rooijen
  • Mai-Britt Worm Ørntoft
  • Anders Husted Madsen
  • Cornelis J H van de Velde
  • Marcel Verheij
  • Annemieke Cats
  • Cornelis J A Punt
  • Geraldine R Vink
  • Nicole C T van Grieken
  • Miriam Koopman
  • Remond J A Fijneman
  • Julia S Johansen
  • Hans Jørgen Nielsen
  • Gerrit A Meijer
  • Claus Lindbjerg Andersen
  • Robert B Scharpf
  • Victor E Velculescu
Vis graf over relationer

Cell-free DNA in the blood provides a non-invasive diagnostic avenue for patients with cancer1. However, characteristics of the origins and molecular features of cell-free DNA are poorly understood. Here we developed an approach to evaluate fragmentation patterns of cell-free DNA across the genome, and found that profiles of healthy individuals reflected nucleosomal patterns of white blood cells, whereas patients with cancer had altered fragmentation profiles. We used this method to analyse the fragmentation profiles of 236 patients with breast, colorectal, lung, ovarian, pancreatic, gastric or bile duct cancer and 245 healthy individuals. A machine learning model that incorporated genome-wide fragmentation features had sensitivities of detection ranging from 57% to more than 99% among the seven cancer types at 98% specificity, with an overall area under the curve value of 0.94. Fragmentation profiles could be used to identify the tissue of origin of the cancers to a limited number of sites in 75% of cases. Combining our approach with mutation-based cell-free DNA analyses detected 91% of patients with cancer. The results of these analyses highlight important properties of cell-free DNA and provide a proof-of-principle approach for the screening, early detection and monitoring of human cancer.

OriginalsprogEngelsk
TidsskriftNature
Vol/bind570
Udgave nummer7761
Sider (fra-til)385-389
Antal sider5
ISSN0028-0836
DOI
StatusUdgivet - jun. 2019

ID: 57307227