PMID- 32275333 OWN - NLM STAT- MEDLINE DCOM- 20201023 LR - 20201023 IS - 1531-4995 (Electronic) IS - 0023-852X (Print) IS - 0023-852X (Linking) VI - 130 IP - 8 DP - 2020 Aug TI - High pATM is Associated With Poor Local Control in Supraglottic Cancer Treated With Radiotherapy. PG - 1954-1960 LID - 10.1002/lary.28641 [doi] AB - OBJECTIVES: Most early stage laryngeal squamous cell carcinomas (LSCC) are treated with radiotherapy. Discovery of new biomarkers are needed to improve prediction of outcome after radiotherapy and to identify potential targets for systemic targeted therapy. The ataxia telangiectasia mutated (ATM) gene plays a critical role in DNA damage response induced by ionizing radiation. METHODS: The prognostic value of immunohistochemical expression of pATM, pChk2, and p53 were investigated in 141 patients with T1-T2 LSCC curatively treated with external beam radiotherapy. Uni- and multivariable Cox regression analyses were performed to examine the relation between expression levels of markers and local control. RESULTS: Local control was significantly worse in cases with high levels of pATM (HR 2.14; 95% CI, 1.08-4.24; P = .03). No significant associations with local control were found for pChk2 and p53 expression. The association of high pATM expression with poor local control was only found for supraglottic LSCC (HR 10.9; 95% CI, 1.40-84.4; P = .02). CONCLUSION: Our findings suggest a potential role for ATM in response to radiotherapy in early stage supraglottic LSCC and imply ATM inhibition as a possibility to improve response to radiotherapy. LEVEL OF EVIDENCE: NA Laryngoscope, 130: 1954-1960, 2020. CI - (c) 2020 The Authors. The Laryngoscope published by Wiley Periodicals, Inc. on behalf of The American Laryngological, Rhinological and Otological Society, Inc. FAU - Bruine de Bruin, Leonie AU - Bruine de Bruin L AUID- ORCID: 0000-0003-1240-9236 AD - Department of Otorhinolaryngology/Head and Neck Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. FAU - Schuuring, Ed AU - Schuuring E AD - Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. FAU - de Bock, Geertruida H AU - de Bock GH AD - Department of Epidemiology and Statistics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. FAU - Slagter-Menkema, Lorian AU - Slagter-Menkema L AD - Department of Otorhinolaryngology/Head and Neck Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. AD - Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. FAU - Mastik, Mirjam F AU - Mastik MF AD - Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. FAU - Noordhuis, Maartje G AU - Noordhuis MG AD - Department of Otorhinolaryngology/Head and Neck Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. FAU - Langendijk, Johannes A AU - Langendijk JA AD - Department of Radiation Oncology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. FAU - Kluin, Philip M AU - Kluin PM AD - Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. FAU - van der Laan, Bernard F A M AU - van der Laan BFAM AUID- ORCID: 0000-0002-5016-2871 AD - Department of Otorhinolaryngology/Head and Neck Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. LA - eng PT - Journal Article DEP - 20200410 PL - United States TA - Laryngoscope JT - The Laryngoscope JID - 8607378 RN - 0 (Biomarkers, Tumor) RN - 0 (Tumor Suppressor Protein p53) RN - EC 2.7.1.11 (Checkpoint Kinase 2) RN - EC 2.7.11.1 (ATM protein, human) RN - EC 2.7.11.1 (Ataxia Telangiectasia Mutated Proteins) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Ataxia Telangiectasia Mutated Proteins/*genetics MH - Biomarkers, Tumor/*genetics MH - Carcinoma, Squamous Cell/*genetics/*pathology/*radiotherapy MH - Checkpoint Kinase 2/genetics MH - Female MH - Humans MH - Laryngeal Neoplasms/*pathology/*radiotherapy MH - Male MH - Middle Aged MH - Prognosis MH - Tumor Suppressor Protein p53/genetics PMC - PMC7384019 OTO - NOTNLM OT - Laryngeal squamous cell carcinoma OT - ataxia telangiectasia mutated (ATM) OT - local control OT - radiotherapy EDAT- 2020/04/11 06:00 MHDA- 2020/10/24 06:00 PMCR- 2020/07/27 CRDT- 2020/04/11 06:00 PHST- 2019/11/17 00:00 [received] PHST- 2020/02/09 00:00 [revised] PHST- 2020/03/02 00:00 [accepted] PHST- 2020/04/11 06:00 [pubmed] PHST- 2020/10/24 06:00 [medline] PHST- 2020/04/11 06:00 [entrez] PHST- 2020/07/27 00:00 [pmc-release] AID - LARY28641 [pii] AID - 10.1002/lary.28641 [doi] PST - ppublish SO - Laryngoscope. 2020 Aug;130(8):1954-1960. doi: 10.1002/lary.28641. Epub 2020 Apr 10.