Cited by 157Bladder and Urothelial Cancer TreatmentsUrinary and Genital Oncology StudiesGenomic variations and chromosomal abnormalities

Amplification pattern of 12q13–q15 genes (MDM2, CDK4, GLI) in urinary bladder cancer

Simon, Ronald, Struckmann, Kirsten, Schraml, Peter, Wagner, Urs, Forster, Thomas, Moch, Holger, Fijan, André, Bruderer, James +4 more·2002·Oncogene

Abstract

The chromosomal region 12q13-q15 is recurrently amplified in bladder cancer. Putative target genes located in this region include MDM2, CDK4, and GLI. To evaluate the involvement of these genes in bladder cancer, we screened a tissue microarray (TMA) containing 2317 samples by fluorescence in situ hybridization (FISH). Amplification was found for MDM2 in 5.1%, for CDK4 in 1.1%, and for GLI in 0.4% of interpretable tumors. Among tumors having amplification of at least one of these 12q13-q15 genes, 76.6% had amplification of MDM2 alone and 6.4% had amplification of CDK4 alone. Coamplifications were seen of MDM2 and CDK4 in 10.6%, and of CDK4 and GLI in 6.4%. Neither coamplifications of all three genes nor isolated GLI amplifications were found. These data suggest a prominent role of MDM2 as a 12q13-q15 amplification target in bladder cancer. However, independent CDK4 amplifications do also occur suggesting either two non-overlapping amplification sites or else a minimal overlapping region between MDM2 and CDK4 perhaps containing another yet unknown oncogene. The frequency of amplification increased significantly from stage pTa to pT1-4 (P<0.04) and from low to high grade (P<0.005). These data are consistent with a high level of genetic instability in invasively growing and high-grade bladder tumors.

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Crossref · 10.1038/sj.onc.1205304

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Authors
Simon, R., Struckmann, K., Schraml, P., Wagner, U., Forster, T., Moch, H., Fijan, A., Bruderer, J., Wilber, K., Mihatsch, M. J., Gasser, T., & Sauter, G.
Affiliations
  • University of Basel (CH)
  • Kantonsspital Baselland (CH)
Corresponding author
Sauter, Guido
Venue
Oncogene
Published
2002-04-11
Volume
21
Issue
16
Pages
2476-2483
ISSN
  • 0950-9232 (ISSN-L)
  • 1476-5594
OpenAlex
W2140911476
Cited by
157
References
37
Citations by year
2026: 3 · 2025: 4 · 2024: 2 · 2023: 5 · 2022: 4 · 2021: 3 · 2020: 1 · 2019: 1 · 2018: 1 · 2017: 5 · 2016: 4 · 2015: 4 · 2014: 9 · 2013: 10 · 2012: 10
FWCI
12.07
Type
journal article
Language
en
Open access
closed
Locations
  • Oncogene (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Surgery › Bladder and Urothelial Cancer Treatments
  • Health Sciences › Medicine › Surgery › Urinary and Genital Oncology Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomic variations and chromosomal abnormalities
Keywords
bladder cancer, MDM2, CDK4, GLI, gene amplification, co-amplification, tumor stage, tumor grade, genomic instability, oncogenes
MeSH terms
Zinc Finger Protein GLI1, Urinary Bladder Neoplasms, Chromosomes, Human, Pair 12, Gene Amplification, Humans, Nuclear Proteins, Prognosis, Proto-Oncogene Proteins, RNA, Neoplasm, Transcription Factors, Oncogene Proteins, Trans-Activators, Survival Analysis, Cyclin-Dependent Kinases, Oligonucleotide Array Sequence Analysis, Cyclin-Dependent Kinase 4, Proto-Oncogene Proteins c-mdm2

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