R172 mutations in> 80% cases. We explored the potential of genome-wide DNA methylation
profiling to elucidate tumor biology and improve the diagnosis of sinonasal undifferentiated
carcinoma and its histologic mimics. Forty-two cases, including sinonasal undifferentiated,
large cell neuroendocrine, small cell neuroendocrine, and SMARCB1-deficient carcinomas
and olfactory neuroblastoma, were profiled by Illumina Infinium Methylation EPIC array …