RNA expression of DNA damage response genes in muscle-invasive bladder cancer: influence on outcome and response to adjuvant cisplatin-based chemotherapy
Background: Perioperative cisplatin-based chemotherapy (CBC) can improve the outcome of patients with muscle-invasive bladder cancer (MIBC), but it is still to be defined which patients benefit. Mutations in DNA damage response genes (DDRG) can predict the response to CBC. The value of DDRG expressi...
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| Main Authors: | , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
18 April 2021
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| In: |
International journal of molecular sciences
Year: 2021, Volume: 22, Issue: 8, Pages: 1-12 |
| ISSN: | 1422-0067 |
| DOI: | 10.3390/ijms22084188 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.3390/ijms22084188 Verlag, lizenzpflichtig, Volltext: https://www.mdpi.com/1422-0067/22/8/4188 
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| Author Notes: | Jonas Herrmann, Helena Schmidt, Katja Nitschke, Cleo-Aron Weis, Philipp Nuhn, Jost von Hardenberg, Maurice Stephan Michel, Philipp Erben, Thomas Stefan Worst |
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| 245 | 1 | 0 | |a RNA expression of DNA damage response genes in muscle-invasive bladder cancer |b influence on outcome and response to adjuvant cisplatin-based chemotherapy |c Jonas Herrmann, Helena Schmidt, Katja Nitschke, Cleo-Aron Weis, Philipp Nuhn, Jost von Hardenberg, Maurice Stephan Michel, Philipp Erben, Thomas Stefan Worst |
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| 520 | |a Background: Perioperative cisplatin-based chemotherapy (CBC) can improve the outcome of patients with muscle-invasive bladder cancer (MIBC), but it is still to be defined which patients benefit. Mutations in DNA damage response genes (DDRG) can predict the response to CBC. The value of DDRG expression as a marker of CBC treatment effect remains unclear. Material and methods: RNA expression of the nine key DDRG (BCL2, BRCA1, BRCA2, ERCC2, ERCC6, FOXM1, RAD50, RAD51, and RAD52) was assessed by qRT-PCR in a cohort of 61 MICB patients (median age 66 y, 48 males, 13 females) who underwent radical cystectomy in a tertiary care center. The results were validated in the The Cancer Genome Atlas (TCGA) cohort of MIBC (n = 383). Gene expression was correlated with disease-free survival (DFS) and overall survival (OS). Subgroup analyses were performed in patients who received adjuvant cisplatin-based chemotherapy (ACBC) (Mannheim n = 20 and TCGA n = 75). Results: Low expression of RAD52 was associated with low DFS in both the Mannheim and the TCGA cohorts (Mannheim: p = 0.039; TCGA: p = 0.017). This was especially apparent in subgroups treated with ACBC (Mannheim: p = 0.0059; TCGA: p = 0.012). Several other genes showed an influence on DFS in the Mannheim cohort (BRCA2, ERCC2, FOXM1) where low expression was associated with poor DFS (p < 0.05 for all). This finding was not fully supported by the data in the TCGA cohort, where high expression of FOXM1 and BRCA2 correlated with poor DFS. Conclusion: Low expression of RAD52 correlated with decreased DFS in the Mannheim and the TCGA cohort. This effect was especially pronounced in the subset of patients who received ACBC, making it a promising indicator for response to ACBC on the level of gene expression. | ||
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| 650 | 4 | |a <i>BRCA1</i> | |
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| 650 | 4 | |a DNA-damage response | |
| 650 | 4 | |a muscle-invasive bladder cancer | |
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