Clear cell renal cell carcinoma: a comparative study of histological and chromosomal characteristics between primary tumors and their corresponding metastases.
Details
Serval ID
serval:BIB_DB32FE29104E
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Clear cell renal cell carcinoma: a comparative study of histological and chromosomal characteristics between primary tumors and their corresponding metastases.
Journal
Virchows Archiv
ISSN
1432-2307 (Electronic)
ISSN-L
0945-6317
Publication state
Published
Issued date
07/2017
Peer-reviewed
Oui
Volume
471
Number
1
Pages
107-115
Language
english
Notes
Publication types: Comparative Study ; Journal Article
Publication Status: ppublish
Publication Status: ppublish
Abstract
Clear cell renal cell carcinoma (ccRCC) has a poor prognosis with a 50% risk of metastases. Little is known about the phenotypic and molecular profiles of metastases regarding their corresponding primary tumors. This study aimed to screen phenotypic and genotypic differences between metastases and their corresponding primary tumors. We selected four cases with available frozen material. The histological, immunohistochemical (VEGFA, CD31, SMA, Ki67, p53, PAR-3), FISH (VHL gene), next-generation sequencing (VHL and c-MET genes), multiplex ligation-dependent probe amplification, and array-(comparative genomic hybridization) CGH analyses were realized. Metastases were nodal, hepatic (synchronous), adrenal, and pulmonary (metachronous). High-grade tumor cells were significantly more frequent in metastases (p = 0.019). Metastases and high-grade zones of primary tumors shared similar characteristics compared to low-grade zones: a lower microscopic vascular density (43.5 vs 382.5 vessels/mm <sup>2</sup> ; p = 0.0027), a higher expression of VEGF (73 vs 10%, p = 0.045), Ki67 (37.6 vs 8.3%; p = 0.011), and p53 (54 vs 10.6%; p = 0.081), and a cytoplasmic and membranous PAR-3 staining. Metastases exhibited more chromosomal imbalances than primary tumors in total (18.75 ± 6.8; p = 0.044) with more genomic gains (13.5 ± 7; p = 0.013). The loss of chromosome 9 and gain of Xq were found in both primary tumors and metastases but gains of loci or chromosomes 2p, 3q, 5, 8q, 12, and 20 were only found in metastases. The VHL gene status was similar in each tumor couple. Although metastases and primary tumors share common histological features, this study highlights chromosomal differences specific to metastases which could be involved in ccRCC metastatic evolution.
Keywords
Aged, Carcinoma, Renal Cell/genetics, Carcinoma, Renal Cell/pathology, Comparative Genomic Hybridization, High-Throughput Nucleotide Sequencing, Humans, Immunohistochemistry, In Situ Hybridization, Fluorescence, Kidney Neoplasms/genetics, Kidney Neoplasms/pathology, Male, Middle Aged, Multiplex Polymerase Chain Reaction, Mutation, Neoplasm Metastasis/genetics, Neoplasm Metastasis/pathology, Oligonucleotide Array Sequence Analysis, Proto-Oncogene Proteins c-met/genetics, Von Hippel-Lindau Tumor Suppressor Protein/genetics, CGH, Chromosome, Clear cell renal cell carcinoma, Metastasis
Pubmed
Web of science
Create date
28/06/2022 7:25
Last modification date
11/11/2023 7:10