PMID- 33610067 OWN - NLM STAT- MEDLINE DCOM- 20220131 LR - 20220131 IS - 1879-0593 (Electronic) IS - 1368-8375 (Linking) VI - 116 DP - 2021 May TI - Detection of deletions in 1q25, 1p36 and 1pTEL and chromosome 17 aneuploidy in oral epithelial dysplasia and oral squamous cell carcinoma by fluorescence in situ hybridization (FISH). PG - 105221 LID - S1368-8375(21)00044-0 [pii] LID - 10.1016/j.oraloncology.2021.105221 [doi] AB - OBJECTIVE: To identify chromosome deletions in 1q25, 1p36 and 1pTEL, and chromosome 17 ploidy status in oral epithelial dysplasia (OED) and oral squamous cell carcinoma (OSCC). MATERIAL AND METHODS: Samples from 57 OED and 63 OSCC were selected. FISH was performed using centromeric probes 17 and n LSIR 1p36/LSI 1q25 Dual Color Probe. RESULTS: In OED, deletions were found only in 1pTEL region (29.8%). In OSCC, there was a higher frequency of deletion in 1pTEL (79.4%), followed by 1p36 (73.0%), and 1q25 (20.6%). Advanced TNM clinical stages (III/IV) showed all the deletions studied; at early clinical stages (I/II) of OSCC, deletions were observed only in 1pTEL. The frequency of deletion in 1p36 was 17.0 times higher in OSCC at advanced clinical stages (PR: 17.00). The median number of cell nuclei with chromosome 17 aneuploidy was higher in OSCC than in OED (P < 0.001). Early clinical stages of OSCC showed lower median number nuclei with aneuploidy when compared to advanced tumors (P < 0.05). Tumors harboring deletions in 1p36, 1q25 and 1pTEL revealed higher median numbers of trisomic/polysomic nuclei when compared to lesions exhibiting no abnormalities in chromosome 1 (P < 0.05). CONCLUSION: A higher prevalence of chromosomal abnormalities was found in OSCC than in OED, while in OSCC, higher abnormalities were present in lesions with higher TNM staging. 1pTEL deletion and monosomy of chromosome 17 are possible markers for progression of OED to OSCC. 1p36 deletion and trisomy/polysomy of chromosome 17 could be markers of worse prognosis of OSCC. CI - Copyright (c) 2021 Elsevier Ltd. All rights reserved. FAU - Barem Rabenhorst, Silvia Helena AU - Barem Rabenhorst SH AD - Department of Pathology and Forensic Medicine, Molecular Genetics Laboratory (LABGEM), School of Medicine, Federal University of Ceara, Fortaleza, Brazil. FAU - Lima Verde Osterne, Rafael AU - Lima Verde Osterne R AD - Department of Pathology, University of Fortaleza / Universidade de Fortaleza, School of Medicine, Fortaleza, Brazil. Electronic address: rlimaverde@unifor.br. FAU - Weege Nonaka, Cassiano Francisco AU - Weege Nonaka CF AD - State University of Paraiba (UEPB), Campina Grande, Paraiba, Brazil. FAU - Montezuma Sales Rodrigues, Andre AU - Montezuma Sales Rodrigues A AD - University of Fortaleza / Universidade de Fortaleza, School of Dentistry, Fortaleza, Brazil. FAU - Luiz Maia Nogueira, Renato AU - Luiz Maia Nogueira R AD - Department of Dental Clinic, Discipline of Oral and Maxillofacial Surgery and Stomatology, Federal University of Ceara School of Dentistry, Fortaleza, Brazil. Oral and Maxillofacial Surgeon, Department of Oral and Maxillofacial Surgery, Memorial Batista Hospital, Fortaleza, Brazil. FAU - Mario Rodriguez Burbano, Rommel AU - Mario Rodriguez Burbano R AD - Research Center on Oncology, Institute of Health Sciences, Federal University of Para, Mundurucus Street, 66073-000 Belem, Para, Brazil. FAU - Barroso Cavalcante, Roberta AU - Barroso Cavalcante R AD - Department of Oral Pathology, University of Fortaleza / Universidade de Fortaleza, School of Dentistry, Fortaleza, Brazil. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210217 PL - England TA - Oral Oncol JT - Oral oncology JID - 9709118 SB - IM MH - Aneuploidy MH - *Chromosomes, Human, Pair 17 MH - Gene Deletion MH - Humans MH - Hyperplasia MH - In Situ Hybridization, Fluorescence MH - *Mouth Mucosa/pathology MH - *Mouth Neoplasms/genetics MH - *Squamous Cell Carcinoma of Head and Neck/genetics OTO - NOTNLM OT - Chromosome 1 OT - Chromosome 17 OT - Chromosome deletion OT - Mouth neoplasms OT - Squamous cell carcinoma EDAT- 2021/02/21 06:00 MHDA- 2022/02/01 06:00 CRDT- 2021/02/20 20:15 PHST- 2020/06/22 00:00 [retracted] PHST- 2021/01/07 00:00 [revised] PHST- 2021/02/02 00:00 [accepted] PHST- 2021/02/21 06:00 [pubmed] PHST- 2022/02/01 06:00 [medline] PHST- 2021/02/20 20:15 [entrez] AID - S1368-8375(21)00044-0 [pii] AID - 10.1016/j.oraloncology.2021.105221 [doi] PST - ppublish SO - Oral Oncol. 2021 May;116:105221. doi: 10.1016/j.oraloncology.2021.105221. Epub 2021 Feb 17.