npj Genomic Medicine (Mar 2024)

Genome-wide association analyses of ovarian cancer patients undergoing primary debulking surgery identify candidate genes for residual disease

  • Dhanya Ramachandran,
  • Jonathan P. Tyrer,
  • Stefan Kommoss,
  • Anna DeFazio,
  • Marjorie J. Riggan,
  • AOCS Group,
  • Penelope M. Webb,
  • Peter A. Fasching,
  • Diether Lambrechts,
  • María J. García,
  • Cristina Rodríguez-Antona,
  • Marc T. Goodman,
  • Francesmary Modugno,
  • Kirsten B. Moysich,
  • Beth Y. Karlan,
  • Jenny Lester,
  • Susanne K. Kjaer,
  • Allan Jensen,
  • Estrid Høgdall,
  • Ellen L. Goode,
  • William A. Cliby,
  • Amanika Kumar,
  • Chen Wang,
  • Julie M. Cunningham,
  • Stacey J. Winham,
  • Alvaro N. Monteiro,
  • Joellen M. Schildkraut,
  • Daniel W. Cramer,
  • Kathryn L. Terry,
  • Linda Titus,
  • Line Bjorge,
  • Liv Cecilie Vestrheim Thomsen,
  • OPAL Study Group,
  • Tanja Pejovic,
  • Claus K. Høgdall,
  • Iain A. McNeish,
  • Taymaa May,
  • David G. Huntsman,
  • Jacobus Pfisterer,
  • Ulrich Canzler,
  • Tjoung-Won Park-Simon,
  • Willibald Schröder,
  • Antje Belau,
  • Lars Hanker,
  • Philipp Harter,
  • Jalid Sehouli,
  • Rainer Kimmig,
  • Nikolaus de Gregorio,
  • Barbara Schmalfeldt,
  • Klaus Baumann,
  • Felix Hilpert,
  • Alexander Burges,
  • Boris Winterhoff,
  • Peter Schürmann,
  • Lisa-Marie Speith,
  • Peter Hillemanns,
  • Andrew Berchuck,
  • Sharon E. Johnatty,
  • Susan J. Ramus,
  • Georgia Chenevix-Trench,
  • Paul D. P. Pharoah,
  • Thilo Dörk,
  • Florian Heitz

DOI
https://doi.org/10.1038/s41525-024-00395-y
Journal volume & issue
Vol. 9, no. 1
pp. 1 – 12

Abstract

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Abstract Survival from ovarian cancer depends on the resection status after primary surgery. We performed genome-wide association analyses for resection status of 7705 ovarian cancer patients, including 4954 with high-grade serous carcinoma (HGSOC), to identify variants associated with residual disease. The most significant association with resection status was observed for rs72845444, upstream of MGMT, in HGSOC (p = 3.9 × 10−8). In gene-based analyses, PPP2R5C was the most strongly associated gene in HGSOC after stage adjustment. In an independent set of 378 ovarian tumours from the AGO-OVAR 11 study, variants near MGMT and PPP2R5C correlated with methylation and transcript levels, and PPP2R5C mRNA levels predicted progression-free survival in patients with residual disease. MGMT encodes a DNA repair enzyme, and PPP2R5C encodes the B56γ subunit of the PP2A tumour suppressor. Our results link heritable variation at these two loci with resection status in HGSOC.