Comprehensive genomic analysis reveals the prognostic role of LRRK2 copy-number variations in human malignancies

Gianluca Lopez, Giulia Lazzeri, Alessandra Rappa, Giuseppe Isimbaldi, Fulvia Milena Cribiù, Elena Guerini-Rocco, Stefano Ferrero, Valentina Vaira, Alessio Di Fonzo

Research output: Contribution to journalArticlepeer-review

Abstract

Genetic alterations of leucine-rich repeat kinase 2 (LRRK2), one of the most important contributors to familial Parkinson’s disease (PD), have been hypothesized to play a role in cancer development due to demographical and preclinical data. Here, we sought to define the prevalence and prognostic significance of LRRK2 somatic mutations across all types of human malignancies by querying the publicly available online genomic database cBioPortal. Ninety-six different studies with 14,041 cases were included in the analysis, and 761/14,041 (5.4%) showed genetic alterations in LRRK2. Among these, 585 (76.9%) were point mutations, indels or fusions, 168 (22.1%) were copy number variations (CNVs), and 8 (1.0%) showed both types of alterations. One case showed the somatic mutation R1441C. A significant difference in terms of overall survival (OS) was noted between cases harboring somatic LRRK2 whole deletions, amplifications, and CNV-unaltered cases (median OS: 20.09, 57.40, and 106.57 months, respectively; p = 0.0008). These results suggest that both LRRK2 amplifications and whole gene deletions could play a role in cancer development, paving the way for future research in terms of potential treatment with LRRK2 small molecule inhibitors for LRRK2-amplified cases.

Original languageEnglish
Article number846
Pages (from-to)1-15
Number of pages15
JournalGenes
Volume11
Issue number8
DOIs
Publication statusPublished - Aug 2020

Keywords

  • Cancer
  • CNV
  • LRRK2
  • Mutations
  • Prognostic

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

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