Genome-Wide Meta-Analysis Identifies Variants in DSCAM and PDLIM3 That Correlate with Efficacy Outcomes in Metastatic Renal Cell Carcinoma Patients Treated with Sunitinib

Meta H. M. Diekstra, Jesse J. Swen, Loes F. M. van der Zanden, Sita H. Vermeulen, Epie Boven, Ron H. J. Mathijssen, Koya Fukunaga, Taisei Mushiroda, Fumiya Hongo, Egbert Oosterwijk, Anne Cambon-Thomsen, Daniel Castellano, Achim Fritsch, Jesus Garcia Donas, Cristina Rodriguez-Antona, Rob Ruijtenbeek, Marius T. Radu, Tim Eisen, Kerstin Junker, Max RoesslerUlrich Jaehde, Tsuneharu Miki, Stefan Böhringer, Michiaki Kubo, Lambertus A. L. M. Kiemeney, Henk-Jan Guchelaar

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Abstract

Individual response to sunitinib in metastatic renal cell carcinoma (mRCC) patients is highly variable. Earlier, sunitinib outcome was related to single nucleotide polymorphisms (SNPs) in CYP3A5 and ABCB1. Our aim is to provide novel insights into biological mechanisms underlying sunitinib action. We included mRCC patients from the European EuroTARGET consortium (n = 550) and the RIKEN cohort in Japan (n = 204) which were analysed separately and in a meta-analysis of genome-wide association studies (GWAS). SNPs were tested for association with progression-free survival (PFS) and overall survival (OS) using Cox regression. Summary statistics were combined using a fixed effect meta-analysis. SNP rs28520013 in PDLIM3 and the correlated SNPs rs2205096 and rs111356738 both in DSCAM, showed genome-wide significance (p < 5 × 10 −8 ) with PFS and OS in the meta-analysis. The variant T-allele of rs28520013 associated with an inferior PFS of 5.1 months compared to 12.5 months in non-carriers (p = 4.02 × 10 −10, HR = 7.26). T-allele carriers of rs28520013 showed an inferior OS of 6.9 months versus 30.2 months in non-carriers (p = 1.62 × 10 −8, HR = 5.96). In this GWAS we identified novel genetic variants in PDLIM3 and DSCAM that impact PFS and OS in mRCC patients receiving sunitinib. The underlying link between the identified genes and the molecular mechanisms of sunitinib action needs to be elucidated.

Original languageEnglish
Article number2838
JournalCancers
Volume14
Issue number12
DOIs
Publication statusPublished - 1 Jun 2022

Keywords

  • clear cell renal cell carcinoma
  • genome wide association study
  • metastatic renal cell carcinoma
  • pharmacogenetics
  • single nucleotide polymorphism
  • sunitinib

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