PMID- 28249643 OWN - NLM STAT- MEDLINE DCOM- 20180326 LR - 20180530 IS - 1879-0593 (Electronic) IS - 1368-8375 (Linking) VI - 66 DP - 2017 Mar TI - Chromosome instability in tumor resection margins of primary OSCC is a predictor of local recurrence. PG - 14-21 LID - S1368-8375(16)30276-7 [pii] LID - 10.1016/j.oraloncology.2016.12.029 [doi] AB - BACKGROUND: The local recurrence rate in oral squamous cell cancer (OSCC) hardly decreases. This is partly due to the presence of (pre)malignant cells in the remaining tissue after resection, that may lead to the development of a new tumor in time. Detection of histologically (pre)malignant cells in the tumor resection margins should predict these patients at risk for recurrence, however this appears to be difficult in routine practice. Purpose of this study was to apply easy-to-use molecular tests for more accurate detection of (pre)malignant cells in histopathologically tumor-free margins, to improve diagnosis of patients at risk. METHODS: 42 patients with firstly diagnosed, radically resected primary OSCC with histopathologically confirmed tumor-free resection margins (treated between 1994 and 2003) were included. Inclusion criteria comprised of follow-up ⩾5years, and radical surgery without postoperative treatment. Formalin-fixed paraffine-embedded tissue sections of 42 tumors, 290 resection margins, and 11 recurrences were subjected to fluorescence in situ hybridization (FISH) to examine chromosome 1 and 7 copy number variations (CNV), and to p53 immunohistochemistry (IHC). RESULTS: 11 out of the 42 patients developed a local recurrence within 5years. FISH analysis showed that nine of eleven recurrences exhibited CI in at least one of the resection margins (p=0.008). P53 overexpression and routine histopathologic classification were not correlated with recurrent disease. The presence of CI in the resection margins revealed a significantly worse progression-free survival (log-rank p=0.012). CONCLUSIONS: CI in the resection margins of OSCC can reliably identify patients at risk for developing a local recurrence. CI - Copyright (c) 2016 Elsevier Ltd. All rights reserved. FAU - Pierssens, Damiana D C G AU - Pierssens DDCG AD - Department of Oral and Craniomaxillofacial Surgery, GROW-School for Oncology and Developmental Biology, Maastricht University Medical Centre, Maastricht, The Netherlands. Electronic address: damiana.pierssens@mumc.nl. FAU - Borgemeester, Maarten C AU - Borgemeester MC AD - Department of Otorhinolaryngology, Head & Neck Surgery, GROW-School for Oncology and Developmental Biology, Maastricht University Medical Centre, Maastricht, The Netherlands. FAU - van der Heijden, Stijn J H AU - van der Heijden SJH AD - Department of Otorhinolaryngology, Head & Neck Surgery, GROW-School for Oncology and Developmental Biology, Maastricht University Medical Centre, Maastricht, The Netherlands. FAU - Peutz-Kootstra, Carine J AU - Peutz-Kootstra CJ AD - Department of Pathology, GROW-School for Oncology and Developmental Biology, Maastricht University Medical Centre, Maastricht, The Netherlands. FAU - Ruland, Andrea M AU - Ruland AM AD - Department of Pathology, GROW-School for Oncology and Developmental Biology, Maastricht University Medical Centre, Maastricht, The Netherlands. FAU - Haesevoets, Annick M AU - Haesevoets AM AD - Department of Pathology, GROW-School for Oncology and Developmental Biology, Maastricht University Medical Centre, Maastricht, The Netherlands. FAU - Kessler, Peter A W H AU - Kessler PAWH AD - Department of Oral and Craniomaxillofacial Surgery, GROW-School for Oncology and Developmental Biology, Maastricht University Medical Centre, Maastricht, The Netherlands. FAU - Kremer, Bernd AU - Kremer B AD - Department of Otorhinolaryngology, Head & Neck Surgery, GROW-School for Oncology and Developmental Biology, Maastricht University Medical Centre, Maastricht, The Netherlands. FAU - Speel, Ernst-Jan M AU - Speel EM AD - Department of Pathology, GROW-School for Oncology and Developmental Biology, Maastricht University Medical Centre, Maastricht, The Netherlands. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20170106 PL - England TA - Oral Oncol JT - Oral oncology JID - 9709118 SB - IM MH - Carcinoma, Squamous Cell/*genetics/pathology/surgery MH - *Chromosomal Instability MH - Chromosomes, Human, Pair 1 MH - Chromosomes, Human, Pair 7 MH - Female MH - Humans MH - In Situ Hybridization, Fluorescence MH - Male MH - Middle Aged MH - Mouth Neoplasms/*genetics/pathology/surgery MH - *Neoplasm Recurrence, Local OTO - NOTNLM OT - Aneuploidy OT - Chromosomal instability OT - Copy number variation OT - FISH OT - Oral squamous cell carcinoma OT - Recurrence OT - Resection margins OT - p53 EDAT- 2017/03/03 06:00 MHDA- 2018/03/27 06:00 CRDT- 2017/03/03 06:00 PHST- 2016/09/25 00:00 [received] PHST- 2016/12/08 00:00 [revised] PHST- 2016/12/28 00:00 [accepted] PHST- 2017/03/03 06:00 [entrez] PHST- 2017/03/03 06:00 [pubmed] PHST- 2018/03/27 06:00 [medline] AID - S1368-8375(16)30276-7 [pii] AID - 10.1016/j.oraloncology.2016.12.029 [doi] PST - ppublish SO - Oral Oncol. 2017 Mar;66:14-21. doi: 10.1016/j.oraloncology.2016.12.029. Epub 2017 Jan 6.