High Frequency of RPL22 Mutations in Microsatellite-Unstable Colorectal and Endometrial Tumors

Ana M. Monteira Ferreira, Iina Tuominen, Krista van Dijk-Bos, Bahram Sanjabi, Tineke van der Sluis, Ate G. van der Zee, Harry Hollema, Monika Zazula, Rolf H. Sijmons, Lauri A. Aaltonen, Helga Westers, Robert M. W. Hofstra*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

29 Citations (Scopus)

Abstract

Ribosomal Protein L22 (RPL22) encodes a protein that is a component of the 60S subunit of the ribosome. Variants in this gene have recently been linked to cancer development. Mutations in an A8 repeat in exon 2 were found in a recent study in 52% of microsatellite-unstable endometrial tumors. These tumors are particularly prone to mutations in repeats due to mismatch repair deficiency. We screened this coding repeat in our collection of microsatellite-unstable endometrial tumors (EC) and colorectal tumors (CRC). We found 50% mutation frequency for EC and 77% mutation frequency for CRC. These results confirm the previous study on the involvement of RPL22 in EC and, more importantly, reports for the first time such high mutation frequency in this gene in colorectal cancer. Furthermore, considering the high mutation frequency found, our data point toward an important role for RPL22 in microsatellite instability carcinogenesis.

Original languageEnglish
Pages (from-to)1442-1445
Number of pages4
JournalHuman Mutation
Volume35
Issue number12
DOIs
Publication statusPublished - Dec-2014

Keywords

  • RPL22
  • endometrial cancer
  • colorectal cancer
  • microsatellite instability
  • target gene
  • RIBOSOMAL-PROTEIN L22
  • DOWN-REGULATION
  • CANCER
  • GENES
  • INSTABILITY
  • CELLS
  • BUFFALOS

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