No additional prognostic value for MRE11 in squamous cell carcinomas of the anus treated with chemo-radiotherapy.

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No additional prognostic value for MRE11 in squamous cell carcinomas of the anus treated with chemo-radiotherapy.

Br J Cancer. 2017 Jun 22;:

Authors: Walker AK, Kartsonaki C, Collantes E, Nicholson J, Gilbert DC, Kiltie AE

Abstract
BACKGROUND: The majority of anal cancers (84-95%) are driven by infection with human papillomavirus (HPV). HPV-positive tumours show significantly better responses to chemo-radiotherapy when compared with HPV-negative tumours. HPV infection is linked to alterations in DNA damage response proteins, including MRE11. MRE11 is a potential predictive biomarker for response to radiotherapy in muscle-invasive bladder cancer and may hold predictive power in other cancers.
METHODS: Using a previously reported cohort, we evaluated the levels of MRE11 in anal cancer and assessed its predictive value in this disease.
RESULTS: We found no association between the level of MRE11 and relapse-free survival following chemo-radiotherapy.
CONCLUSIONS: MRE11 has no predictive value in the analysis of relapse-free survival after chemo-radiotherapy in anal cancer and does not add to the prognostic value of p16 and tumour-infiltrating lymphocyte scores. Further investigation into the role of DNA repair proteins in anal cancer is required.British Journal of Cancer advance online publication: 22 June 2017; doi:10.1038/bjc.2017.188 www.bjcancer.com.

PMID: 28641314 [PubMed - as supplied by publisher]

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