1. Base of tongue cancer—is it tongue cancer located at the base of the tongue, or is it a type of lingual tonsil cancer? The perspective from a genomic analysis
- Author
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K.Y. Choi, K. Kim, D.J. Lee, J.H. Kim, Young Soo Rho, and I.S. Park
- Subjects
Male ,0301 basic medicine ,Pathology ,medicine.medical_specialty ,Tonsillar Neoplasms ,Gene Expression ,03 medical and health sciences ,0302 clinical medicine ,Germline mutation ,stomatognathic system ,Tongue ,Humans ,Medicine ,Tonsil cancer ,Prospective cohort study ,Survival analysis ,Retrospective Studies ,business.industry ,Retrospective cohort study ,Genomics ,Middle Aged ,respiratory system ,medicine.disease ,Survival Analysis ,Tongue Neoplasms ,Lingual tonsils ,stomatognathic diseases ,030104 developmental biology ,medicine.anatomical_structure ,Otorhinolaryngology ,030220 oncology & carcinogenesis ,Tonsil ,Mutation ,Female ,Surgery ,Oral Surgery ,business - Abstract
The aim of this study was to determine whether base of tongue (BOT) cancer is tongue cancer located at the base of the tongue or lingual tonsil cancer originating from tonsil tissue. This was a retrospective study using data from The Cancer Genome Atlas (TCGA). The genomic patterns of three primary cancers (BOT, oral tongue, and tonsil) were compared to determine their similarities and differences. Gene expression data (n=193; 26 BOT, 125 oral tongue, and 42 tonsil cases), copy number alteration data (n=142; 19 BOT, 96 oral tongue, and 27 tonsil cases), and somatic mutation data (n=187; 25 BOT, 122 oral tongue, and 40 tonsil cases) were analyzed using the t-test, heatmap analysis, and OncoPrint, respectively. Clinical information for the three tumour groups was included in the analyses. When using multiplatform analysis, BOT cancer showed nearly the same genomic pattern as tonsil cancer, but not oral tongue cancer. The χ2 test and survival analysis revealed that BOT cancer had the same clinical and survival patterns as tonsil cancer. In conclusion, BOT cancer showed a genomic pattern similar to that of tonsil cancer, but different to that of oral tongue cancer. Further prospective studies are warranted before the results of this study can be applied in a clinical setting.
- Published
- 2018
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