Independent association of PD-L1 expression with noninactivated VHL clear cell renal cell carcinoma-A finding with therapeutic potential.
Details
Serval ID
serval:BIB_9B7C88D6D513
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Independent association of PD-L1 expression with noninactivated VHL clear cell renal cell carcinoma-A finding with therapeutic potential.
Journal
International journal of cancer
ISSN
1097-0215 (Electronic)
ISSN-L
0020-7136
Publication state
Published
Issued date
01/01/2017
Peer-reviewed
Oui
Volume
140
Number
1
Pages
142-148
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Publication Status: ppublish
Abstract
Clear cell renal cell carcinoma (ccRCC) is an aggressive tumor that is characterized in most cases by inactivation of the tumor suppressor gene VHL. The VHL/HIF/VEGF pathway thus plays a major role in angiogenesis and is currently targeted by anti-angiogenic therapy. The emergence of resistance is leading to the use of targeted immunotherapy against immune checkpoint PD1/PDL1 that restores antitumor immune response. The correlation between VHL status and PD-L1 expression has been little investigated. In this study, we retrospectively reviewed 98 consecutive cases of ccRCC and correlated PD-L1 expression by immunohistochemistry (IHC) with clinical data (up to 10-year follow-up), pathological criteria, VEGF, PAR-3, CAIX and PD-1 expressions by IHC and complete VHL status (deletion, mutation and promoter hypermethylation). PD-L1 expression was observed in 69 ccRCC (70.4%) and the corresponding patients had a worse prognosis, with a median specific survival of 52 months (p = 0.03). PD-L1 expression was significantly associated with poor prognostic factors such as a higher ISUP nucleolar grade (p = 0.01), metastases at diagnosis (p = 0.01), a sarcomatoid component (p = 0.04), overexpression of VEGF (p = 0.006), and cytoplasmic PAR-3 expression (p = 0.01). PD-L1 expression was also associated with dense PD-1 expression (p = 0.007) and with ccRCC with 0 or 1 alteration(s) (non-inactivated VHL tumors; p = 0.007) that remained significant after multivariate analysis (p = 0.004 and p = 0.024, respectively). Interestingly, all wild-type VHL tumors (no VHL gene alteration, 11.2%) expressed PD-L1. In this study, we found PD-L1 expression to be associated with noninactivated VHL tumors and in particular wild-type VHL ccRCC, which may benefit from therapies inhibiting PD-L1/PD-1.
Keywords
Adult, Aged, Aged, 80 and over, B7-H1 Antigen/metabolism, Carcinoma, Renal Cell/genetics, Carcinoma, Renal Cell/metabolism, Carcinoma, Renal Cell/pathology, Female, Gene Expression Regulation, Neoplastic, Humans, Lung Neoplasms/genetics, Lung Neoplasms/metabolism, Lung Neoplasms/pathology, Male, Middle Aged, Multivariate Analysis, Prognosis, Retrospective Studies, Survival Analysis, Von Hippel-Lindau Tumor Suppressor Protein/genetics, PD-L1 expression, VHL status, clear cell renal cell carcinoma, clinical outcome
Pubmed
Web of science
Create date
28/06/2022 7:26
Last modification date
11/11/2023 7:10