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#3805 Transcriptomic analyses of multifocal ileal neuroendocrine tumors

Introduction: Small intestinal neuroendocrine tumors are mostly located in the distal ileum with a high incidence of multiple synchronous primary tumors. To date, loss of heterozygosity (LOH) at chr18 has been the most frequent genomic event identified, occurring in ~60% of tumors. Recently, we showed that synchronous primary tumors from the same ileal NET patient display distinct somatic mutational profiles, including distinct patterns of chr18 LOH, suggesting these tumors originate independently. Thus, new mechanistic insights into multifocal ileal NETs are urgently needed.

Conference:

Presenting Author:

Authors: Mäkinen N, Zhang Z, Munn S, Kasai Y, Kim G,

Keywords: Multifocal ileal NETs, RNA-sequencing, Gene expression,