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Prognostic significance of 1p36 locus deletion in adenoid cystic carcinoma of the salivary glands

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  • Petr Šteiner
  • Simon Andreasen
  • Petr Grossmann
  • Lukáš Hauer
  • Tomáš Vaněček
  • Markéta Miesbauerová
  • Thalita Santana
  • Katalin Kiss
  • David Slouka
  • Alena Skálová
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Adenoid cystic carcinoma (AdCC) of the salivary glands is characterized by MYB-NFIB or MYBL1-NFIB fusion, prolonged but relentlessly progressive clinical course with frequent recurrences, and development of distant metastasis resulting in high long-term mortality. Currently, no effective therapy is available for patients with advanced non-resectable and/or metastatic disease. Complicating the clinical management of this patient group is the lack of prognostic markers. The purpose of this study is to investigate the prognostic value of 1p36 loss in patients with AdCC. The presence of 1p36 deletion and gene fusions involving the MYB, NFIB, and MYBL1 genes in a cohort of 93 salivary gland AdCCs was studied using fluorescence in situ hybridization. These results were statistically correlated with clinical data and outcome. Deletion of 1p36 in AdCC was identified in 13 of 85 analyzable cases (15.29%). MYB-NFIB fusion was detected in 57/85 (67.1%), MYBL1-NFIB fusion in 12/85 (14.1%), MYB-X fusion in 4/85 (4.7%), MYBL1-X in 4/85 (4.7%), and NFIB-X in 2/85 (2.4%) of AdCC cases. None of the 1p36-deleted samples showed MYBL1 rearrangement. Statistical analysis demonstrated a significant correlation between 1p36 deletion and advanced tumor stage and solid histology (p = 0.0061 and 0.0007, respectively). Kaplan-Meier survival curves showed statistically significant correlations between 1p36 deletion and decreased overall survival, disease-specific survival, recurrence-free interval, and recurrence-free survival, all of which were maintained in multivariate analysis. We demonstrate that 1p36 deletion can serve as an indicator of unfavorable outcome of patients with salivary gland AdCC.

Original languageEnglish
JournalVirchows Archiv : an international journal of pathology
Volume473
Issue number4
Pages (from-to)471-480
Number of pages10
ISSN0945-6317
DOIs
Publication statusPublished - Oct 2018

    Research areas

  • Adolescent, Adult, Aged, Aged, 80 and over, Biomarkers, Tumor/genetics, Carcinoma, Adenoid Cystic/genetics, Chromosome Deletion, Chromosomes, Human, Pair 1, Disease Progression, Disease-Free Survival, Gene Fusion, Genetic Predisposition to Disease, Humans, Immunohistochemistry, In Situ Hybridization, Fluorescence, Kaplan-Meier Estimate, Male, Middle Aged, NFI Transcription Factors/genetics, Neoplasm Grading, Neoplasm Recurrence, Local, Neoplasm Staging, Oncogene Proteins, Fusion/genetics, Phenotype, Proportional Hazards Models, Proto-Oncogene Proteins/genetics, Risk Factors, Salivary Gland Neoplasms/genetics, Time Factors, Trans-Activators/genetics, Treatment Outcome, Young Adult

ID: 56701824